088 – Norwegian Oil and Gas
Recommended Guidelines for a
Common Model for Work Permits (WP)
Translated version
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 2
PREFACE
These guidelines are recommended by the Norwegian Oil and Gas Association’s
(Norwegian Oil and Gas’s) HSE Managers Forum and by the Norwegian Oil and Gas
Association’s Operations Committee. They have also been approved by the director
general.
The working group has consisted of members from:
Statoil, Total, Shell, ExxonMobil, ConocoPhillips, Talisman, Lederne, LO and SAFE.
The responsible manager at the Norwegian Oil and Gas Association is the risk
management manager, who can be contacted by telephoning the association’s
switchboard on +47 51 84 65 00.
These guidelines have been prepared with the participation of a broad range of
interested parties within the Norwegian petroleum industry, and are owned by the
Norwegian petroleum industry, represented by the Norwegian Oil and Gas
Association. The association is also responsible for the administration of these
guidelines.
Norwegian Oil and Gas Association
Vassbotnen 1, 4313 Sandnes
P.O. Box 8065
4068 Stavanger
Norway
Tel.: + 47 51 84 65 00
Fax: + 47 51 84 65 01
Website: www.norskoljeoggass.no
E-mail: [email protected]
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 3
CONTENTS
1 INTRODUCTION .................................................................................................................................................. 5
1.1 Purpose ............................................................................................................................................................... 5
1.2 Terminology ...................................................................................................................................................... 5
1.2.1 Work that requires a level 1 work permit......................................................................................... 7
1.2.2 Work that requires a level 2 work permit...................................................................................... 10
1.2.3 Identifying the need for a Safe Job Analysis (SJA)....................................................................... 10
1.2.4 Work that does not require a work permit ................................................................................... 11
1.2.5 Organisation and roles relating to work permits ........................................................................ 11
1.2.6 Special terms associated with hot work ......................................................................................... 12
1.3 Definitions and abbreviations................................................................................................................. 13
1.4 References ....................................................................................................................................................... 13
1.5 Publication and follow-up ........................................................................................................................ 13
2 CHANGES MADE TO THE GUIDELINES .................................................................................................. 14
2.1 Summary.......................................................................................................................................................... 14
3 WORK PERMITS – BASIC PRINCIPLES AND REQUIREMENTS ..................................................... 15
3.1 The purpose of using work permits ..................................................................................................... 15
3.2 Functional requirements of the work permit system ................................................................... 15
3.3 Fundamental principles............................................................................................................................. 16
3.3.1 Internal control ......................................................................................................................................... 16
3.3.2 Area/operational responsibility ........................................................................................................ 16
3.3.3 Executing responsibility ........................................................................................................................ 17
3.3.4 Coordination of work permits and simultaneous activities ................................................... 17
3.4 Planning and preparation requirements............................................................................................ 17
3.4.1 Application process ................................................................................................................................. 17
3.4.2 Validity, completion of the form and changes to work permits ............................................ 18
3.4.3 Application period, duration and extension.................................................................................. 18
3.4.4 Restrictions to the scope of a work permit .................................................................................... 18
3.4.5 Restrictions regarding the execution of a work permit ........................................................... 19
3.4.6 Preparing the work permit; planning of operational and safety preparations .............. 19
3.5 Approval requirements ............................................................................................................................. 19
3.6 Preparation and control requirements prior to starting the work ......................................... 20
3.6.1 Preparations prior to starting the work ......................................................................................... 20
3.6.2 Control and clearance of the work at the work site and in the Central Control Room
(CCR) ......................................................................................................................................................................... 20
3.6.3 Isolation of safety systems and isolation/locking of electrical equipment ...................... 21
3.7 Requirements during the execution of the work ............................................................................ 21
3.7.1 Starting the work ...................................................................................................................................... 21
3.7.2 Overview and control during the work ........................................................................................... 21
3.7.3 Cancellation or suspension of a work permit ............................................................................... 21
3.8 Requirements upon completion of the work.................................................................................... 22
3.8.1 Final control of the work and reactivation of safety systems ................................................ 22
3.8.2 Level 2 work permit over several days ........................................................................................... 23
3.9 Transfer of experience, learning and improvement ...................................................................... 23
3.10 Requirements regarding the training of personnel .................................................................... 23
4 WORK PROCESS FOR PLANNING AND EXECUTION OF WORK PERMITS ............................... 24
5 STANDARD SAFETY REQUIREMENTS FOR LEVEL 1 WORK PERMITS ..................................... 27
5.1 Introduction ................................................................................................................................................... 27
5.2 Matrices covering standard safety requirements for work permits....................................... 27
5.2.1 Hot work class A ....................................................................................................................................... 28
5.2.2 Hot work class B ....................................................................................................................................... 29
5.2.3 Entry into confined spaces ................................................................................................................... 30
5.2.4 Isolation of safety system ...................................................................................................................... 32
5.2.5 Work on hydrocarbon system............................................................................................................. 33
5.2.6 Pressure testing ........................................................................................................................................ 34
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 4
5.2.7 Work over sea ............................................................................................................................................ 35
5.2.8 Work with radioactive substances .................................................................................................... 36
5.2.9 Work with dangerous substances ..................................................................................................... 38
5.2.10 Work with explosives........................................................................................................................... 39
5.2.11 Fire, entry and safety (FES) guards ................................................................................................ 40
5.2.12 Duties of the fire guard ........................................................................................................................ 41
5.2.13 Duties of the safety guard during entry into confined spaces ............................................. 42
5.2.14 Duties of the safety guard during work over sea ...................................................................... 43
APPENDIX A: GUIDELINES FOR COMPLETION AND USE OF THE WORK PERMIT FORMS . 44
A.1 Introduction ................................................................................................................................................... 44
A.2 Planning the work ....................................................................................................................................... 44
A.3 Approval of the work permit .................................................................................................................. 48
A.4 Preparation of equipment and facility prior to starting the work .......................................... 49
A.4.1 General ......................................................................................................................................................... 49
A.5 Execution of the work ................................................................................................................................ 49
A.6 Completion and reactivation................................................................................................................... 50
A.6.1 General ......................................................................................................................................................... 50
A.6.2 Level 2 work permit over several days ........................................................................................... 50
A.7 Signing ............................................................................................................................................................. 50
APPENDIX B: WORK PERMIT (WP) FORMS ............................................................................................. 51
B.1 Administration of the work permit forms ......................................................................................... 51
B.2 Use of the form .............................................................................................................................................. 51
B.3 WP Level 1 form ........................................................................................................................................... 52
B.4 WP level 2 form ............................................................................................................................................ 54
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 5
1 INTRODUCTION
1.1 Purpose
The purpose of this common model is to establish common practices for the use of
work permits on fixed and floating production installations on the Norwegian
continental shelf.
The common model for work permits covers all activities that require a work permit
on such installations, including work in drilling areas.
The safe management and execution of work depends upon the establishment of
safety barriers, so that accidents, injuries and damage can be prevented. Such barriers
are implemented through an interaction between three main elements:
• The work permit system
• The organisation, which represents competence, personal responsibility, roles
and authority
• Operational safety procedures
This model covers the work permit system, including standard role descriptions
relating to work permits. The individual installations may have different
organisational models, but these must take the described roles into account in order
to ensure that the work permit system fulfils its intended functions.
The document also covers standard safety requirements for selected work operations.
The individual operating companies may also have special procedures that provide
stricter requirements for individual operations.
This document is a translation of the original Norwegian document.
1.2 Terminology
Safe Job Analysis (SJA)
A safe job analysis (SJA) is a systematic and stepwise review of all risk factors,
undertaken prior to a specific work task or operation so that steps can be taken to
eliminate or control the identified risk factors during the preparation and execution of
the work.
Risk factor
The term ‘risk factor’ refers to all aspects that may directly or indirectly influence the
risk of losses, injuries to personnel, or damage to the environment or financial assets.
Identified risk
‘Identified risk’ refers to a description of the risk associated with the work to be
carried out. What hazards may be generated by the work? What types of accidents
may occur and what is the worst that could happen? What forms of energy are in the
immediate vicinity, and what risks might these represent?
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
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No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 6
Mitigated risk
‘Mitigated risk’ means that measures have been implemented in order to reduce the
identified risk to an acceptable level. Who shall carry out these measures must also be
clarified.
Work order (WO) – defining a need for work
Generally, many tasks on the installations are registered and generated through work
orders (WOs). WOs often form the basis for work permits. Based on the work
described in the work order, one or more work permits may be associated with the
WO. A WO is a description of one or more work activities or tasks, and has no
limitations with regards to scope or type of work activity.
Work permit (WP)
A work permit (WP) provides written authorisation to carry out defined work at a
specific location on an installation under certain conditions and in a safe manner. It
provides permission for the work to be started once approval has been given, when a
specific set of operational and safety requirements has been fulfilled, and when this is
accepted, documented and approved.
The WP is an operational safety barrier against undesirable incidents. The WP system
ensures that normal safety barriers are not taken out of service or disabled without
compensating measures being put in place. In addition, the WP system sets
requirements regarding the operational and safety preparations that must be carried
out as a prerequisite for clearing the work for execution.
The WP system also ensures that simultaneous activities on the installation are
assessed and coordinated in order to avoid unintended consequences and the
escalation of undesirable incidents.
It is the duty of everyone involved in the planning, approval and execution of work to
evaluate the need for a WP for the work in question.
Work permit levels 1 and 2
WPs are divided into two levels based on risk assessments and the need for
coordination and clearance.
WP level 1 is required for activities with higher risk and for work that requires
coordination and clearance at installation level. This includes activities such as hot
work, entry into confined spaces and the shutdown of safety systems, etc. See also
chapter 1.2.1.
WP level 2 is used for all other types of work which, due to risk, require coordination
and clearance within a specific area or system, ref. chapter1.2.2. The need for a safe
job analysis shall always be considered at both WP levels, ref. chapter 1.2.3.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 7
Classification of work within the WP system
WP
Level 1
Higher
risk
Medium
risk
Lower risk
WP
Level 2
Need for
SJA
shall be
evaluated
Work that does not
require a WP
1.2.1 Work that requires a level 1 work permit
Hot work class A
Work with equipment and tools that constitute an effective ignition source and which
when used in a normal manner may ignite an explosive atmosphere and/or solid
materials or liquids, i.e. high energy is given off in the form of sparks, an open flame or
electric arc, and/or the tool/equipment has a surface temperature that exceeds the
ignition temperature for the exposed medium.
Typical ignition sources include:
• Welding
• Hot tapping of pipes and containers under pressure
• Ordinary grinding/cutting discs
• Heat shrinking with an open flame
• Preheating using an open flame
• Annealing
• Burning
Hot work class B in classified areas
Work with equipment that constitutes a potential ignition source and that in the event
of a fault or malfunction may constitute an effective ignition source which may ignite
an explosive atmosphere, i.e. equipment that does not have a sufficient surface
temperature and/or does not give off sparks, an open flame or electric arc, or in any
other way release sufficient energy to ignite an explosive atmosphere or flammable
liquid during normal use, but which when used incorrectly or in the event of a fault or
malfunction may constitute an effective ignition source.
Typical ignition sources include:
• Heat shrinking with an electrical heat gun
• Sandblasting/needle picking
• Electrical isolation testing (megger testing)
• Soldering equipment
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
•
•
Page: 8
All electrical or battery-operated equipment/apparatus/instruments that are
not Ex-protected in accordance with the classification of the areas in which
they will be used
Rotating steel brushes
Entry into confined spaces
Complete or partial entry into confined spaces or areas that are not normally naturally
or mechanically ventilated, such as tanks, pipes, chain lockers and exhaust ducts.
Isolation of safety system
 Covers work that involves the isolation, testing and bypassing of safety
systems. Safety systems include but are not limited to:
 Emergency shutdown systems
 Fire-fighting systems
 Blowdown system
 Detection systems
 Alarm systems
 Emergency power and non-interruptible power supplies
 Evacuation systems and equipment
For a detailed listing of safety systems, refer to the regulations for the specific
installation.
Work on hydrocarbon systems
Work on piping systems, tanks and associated components that may pose a risk of the
release of produced oil/gas/condensate.
Other work on hydrocarbon systems may be carried out with a WP level 2.
Work activities that are defined as regular routines covered by existing specific work
procedures may be carried out with a WP level 2.
Pressure testing
Testing of newly installed or modified tanks / piping systems / Xmas trees in
accordance with an approved pressure testing procedure and testing above working
pressure and/or design pressure.
Work over sea
‘Work over sea’ refers to work that takes place outside permanent railings where
there is a risk of a personnel falling into the sea. The use of rope access (RA) is not
defined as work over sea when it is performed in accordance with “NS 9600 (SOFT
Standard); Arbeid i tau (Rope access techniques)”. Ref. section “Other activities /
critical operations requiring WP level 1”.
Work in a hydraulic basket in a “moon pool” and on approved scaffolding is not
defined as work over sea when extra barriers such as the following are used:
 Fall arrest equipment
 Man-riding belt
 Net


Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
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
Scaffolding with extra high railings, erected in accordance with class 3 and
certified as class 2. The scaffolding shall be re-certified once a week and
following any external influences such as inclement weather and strong winds
Work with dangerous substances
Work operations involving substances/products classified as chemical substances and
mixtures that may be hazardous to health or the environment, or pose a risk of fire or
explosion.
Examples of work with dangerous substances:
Fire/explosion hazard: Handling/use of flammable chemicals where the volume
and/or proximity to ignition sources poses a higher risk of ignition.
Environmental hazard: Work that poses an increased risk of discharges of chemicals
to sea, where the volume that shall be used exceeds 1 m3.
Health hazard: Heating of materials that are surface-treated and which may result in
the thermal decomposition of, for example, paint. Work on pipe systems, tanks and
associated components that may pose a risk of the release of chemical products.
Grinding, sandblasting or cutting of structures or work that generates dust or
dangerous substances pollution that is harmful to health and to which other personnel
may be exposed.
Work with radioactive substances
Work with radioactive substances/isotopes, including work on systems with
radioactive scale deposits.
Well operations/interventions
Well operations/interventions. This includes such operations as:
 Wireline operations/production logging
 Perforation/well flow over side burner
 Well stimulation
 Coiled tubing or snubbing operations
 Setting plug in or removal of Xmas tree
Work with explosives
Preparation, arming and control of explosives.
Critical lifting operations
Critical lifting operations are operations that may require special safety precautions
or special attention and communication when taking interfaces with adjacent
activities into account. Such operations may include but are not limited to:





Lifting above critical areas / process equipment / well equipment
Transportation of personnel using lifting devices, unless another approval
scheme has been established by the management
Tandem lifts where the weight of the load exceeds the maximum lifting
capacity of one of the lifting devices
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(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
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Overload testing of lifting devices with an SWL exceeding 10 tonnes
 Lifting of special loads such as structures, mobile cranes, etc.
 Heavy lifts not considered to be normal routine operations
 Subsea operations that involve the use of an offshore crane
Other activities / critical operations requiring WP level 1
The operating companies may define other operations or critical activities that
require a WP level 1. Examples of such activities include:
 Personnel diving
 Use of ROV under or in the immediate vicinity of the platform
 Moving of derrick
 Work on live electrical equipment
 Use of rope access, ref. NS-9600 (SOFT Standard)
 Painting works involving spray guns
1.2.2 Work that requires a level 2 work permit
A WP level 2 is used for work that, due to risk, requires coordination and clearance
within a specific area or system.
A WP level 2 normally includes, but is not limited to:
• Mechanical work
• Work on electrical equipment
• Work on automation, data and telecommunications systems
• Erection of scaffolding
• Painting works using brushes and rollers, regardless of hazard category
• Insulation works
1.2.3 Identifying the need for a Safe Job Analysis (SJA)
The need for a Safe Job Analysis (SJA) should be assessed in all phases of the work,
from the planning stage all the way through to actual execution. It is a duty of
everyone involved in the planning, approval and execution of work tasks and WPs to
assess the need for an SJA, ref. Norwegian Oil and Gas Guidelines 090.
An SJA is required when risk factors are present or may arise, and when these factors
are not sufficiently identified and controlled through relevant existing procedures or
an approved WP.
Typical factors that should be considered when assessing the need for an SJA:
• Is the work described in procedures or routines, or does it require deviations
from these?
• Are all risk factors identified and controlled through the WP?
• Has this type of work previously been prone to incidents/accidents?
• Is the work considered risky or complex, or does it involve several disciplines
or departments?
• Are new types of equipment or methods that are not covered by existing
procedures or routines to be used?
• Do the involved personnel have experience with the relevant work or
operation?
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
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No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 11
1.2.4 Work that does not require a work permit
There are several work activities that may be carried out without a WP. This mainly
applies to normal routine production, drilling, logistics or maritime operations, where
the work is carried out within the scope of applicable operational procedures and
requirements.
It also applies to work activities with lower risk, and where coordination and
clearance (ref. 3.5) and an SJA are not required.
The individual operating company defines the specific limitations for work that may
be carried out without a WP. Examples of such activities include:





Work in workshops, provided the workshop is approved for the specific type of
work
General work / domestic chores in the living quarters
Inspection activities that can be performed without physical intervention into
the inspected equipment
Cleaning and tidying that do not involve the use of equipment or chemicals
that require a WP
Use of chemicals with a lower risk and without the need for coordination
1.2.5 Organisation and roles relating to work permits
Each installation has its own organisational description with associated functions and
job titles. Through the use of standard roles in the handling of WPs, the model
described in this document has been rendered independent of such organisational
descriptions and job titles. The organisation of the individual installations is therefore
not addressed here, but it is presumed that the roles defined below are actually taken
into account and incorporated within the individual organisation.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 12
The following roles have been defined in association with the handling of WPs:
Role
Definition
Applicant
The person who plans the work and applies for a WP on behalf of those
who will carry out the work.
Approver/Area/ The management function responsible for the area or system that the
Operations
work will affect, and who will therefore be involved in and approve the
Supervisor
work. If the area and operational responsibility is divided between two
different positions, both must take part in the execution of this role.
HSE Function
An HSE function that checks the quality of the WP application during
planning and approval.
Overall Approver The most senior manager on the facility, who has the overall
/ Platform
responsibility for ensuring that the work is carried out in accordance
Manager
with the WP system, including responsibility for the coordination of
simultaneous operations and activities.
Area Technician The skilled worker who has the operational responsibility for a specific
system and/or area. If the role is divided between two positions, both
must participate in the execution of this role.
Executing
The skilled worker who carries out the physical and specific work
Skilled Worker
covered by the WP.
CCR Technician
A control room function that has a role in the shutdown of safety
functions and the monitoring, control and clearance of WPs
from the location that is defined as the central control room in this
context.
Other position
Other functions that shall be involved in the handling of WPs in
accordance with the requirements of the individual operating
company.
1.2.6 Special terms associated with hot work
Classified area
An area defined as zone 0, zone 1 or zone 2 in accordance with the area classification
plan for the individual installation.
Unclassified area
An area defined as unclassified in accordance with the area classification plan for the
individual installation.
Approved workshop
An unclassified area defined as a workshop and approved for this purpose in
accordance with the guidelines of the individual operating company.
Normal operation
All production states following the introduction of hydrocarbons to the plant.
Production shutdown with depressurised process plant
A state where all production on the installation has been shut down. Barriers against
wells and in/outgoing hydrocarbon pipelines have been established. Process systems
have been depressurised.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 13
1.3 Definitions and abbreviations
WP
WO
CCR
SJA
LSA
RA
ROV
Work Permit
Work Order
Central Control Room
Safe Job Analysis
Low Specific Activity (radioactive scale)
Rope Access
Remote Operated Vehicle
1.4 References
The Petroleum Regulations, Section 30 of the Activities Regulations.
1.5 Publication and follow-up
This document is issued and maintained by the Norwegian Oil and Gas Association
(Norwegian Oil and Gas). Further development in the form of transfer of experience,
learning and improvement will be handled by a dedicated group of representatives
from operating and contracting companies. Appropriate mechanisms will be
implemented in order to ensure the efficient handling of feedback and proposals from
users.
Exceptions should be handled in accordance with the guidelines of the individual
operating company. Such exceptions should also be considered as input for the
revision and updating of this document.
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No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 14
2 CHANGES MADE TO THE GUIDELINES
2.1 Summary
The following changes have been made in revision 3:
1.2.1 Use of rope access (RA) is no longer defined as work over sea when carried out
in accordance with NS 9600. A rescue plan shall be attached to the WP. Added
examples of extra barriers. Spray painting is now classified as WP level 1.
1.2.2 Painting works using brushes and rollers are still classified as level 2.
3.4.3 Emphasised that a WP may only be approved for a period of 14 days and
feature a maximum of seven clearances.
3.8.2 See 3.4.3.
5.2.3 Breathing air must be in accordance with NS-EN 12021 and SfS
recommendation 09N/2003.
5.2.4 Added detection system and PA system, as well as testing of emergency
generator.
5.2.5 Definition of hydrocarbon system more precisely explained.
5.2.7 Reference to 5.2.14.
5.2.8 Corrected text in paragraph 2 from ‘under’ to ‘over’.
5.2.12 Clarified requirements for safety guard.
The following changes have been made in revision 4:
The new template that was created in connection with the name change from OLF to
Norwegian Oil and Gas has been applied to the guidelines. As a consequence, the
chapter divisions and references to chapters have been changed.
In addition, a new appendix, Appendix 1, has been added in order to illustrate how to
ensure and maintain focus on operational safety in connection with individual
activities.
The following changes have been made in revision 5:
No significant policy-related changes have been made. Corrections have been made to
a number of points to ensure compliance with new equipment and the procedures and
routines that apply on the continental shelf. The section on dangerous substances has
been changed and clarifies that work with dangerous substances may be exempt from
a WP in certain cases (e.g. in the event of small volumes – use of adhesives and spray
cans).
The guidelines have been adapted for use on larger facilities/onshore facilities
through more generic role descriptions (approver and overall approver).
The WP level 1 and 2 forms have also been updated. The biggest change here is that
risk shall be identified and the form shall be signed to confirm that the identified risk
is understood and mitigated. In addition, everyone who participates in the execution
of the work shall sign the WP form. A description of identified and mitigated risk has
been added in chapter 1.2.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 15
3 WORK PERMITS – BASIC PRINCIPLES AND REQUIREMENTS
3.1 The purpose of using work permits
The main objective of the WP system is to ensure that all risk factors associated with a
work operation are taken into consideration in the planning, approval, preparation,
execution and completion of the work. The WP forms a basis for:




Preventing undesirable incidents and controlling risk
Documenting safety measures and the appropriate approvals
Communicating information about work activities to all affected personnel
Handling and controlling interfaces between activities on the installation
3.2 Functional requirements of the work permit system
The WP system shall ensure that the following functions are performed:
 Clarify which types of work require a WP
 Ensure that such work is approved in accordance with the terms of
responsibility and regulatory provisions that apply on the individual
installation
 Clearly identify the work to be carried out, the risk involved, restrictions
relating to the execution of the work and the time interval during which the
work may be carried out
 Specify the necessary safety measures and precautions, including isolation
from potential hazards such as hazardous substances or energy sources
 Provide information to the person responsible for an installation or area and
others that may be affected by the work
 Maintain a documented overview, control and management of the work at all
times
 Internal control
 Rules regarding interruptions to the work before it is concluded
 Coordination of simultaneous activities
 Formal handover and exchange of information when a WP is issued for a
period of longer than one shift, or when there is a change of personnel who
have signed the WP during the execution of the work
 Formal hand back following completion of the work to ensure that the part of
the plant affected by the work is in a safe condition and ready for
reinstatement, and that proper cleaning and tidying have been carried out at
the work site.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
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No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 16
3.3 Fundamental principles
3.3.1 Internal control
The WP system is based on the principles of internal control. This means that several
independent parties are involved in the approval, control, coordination and
management of activities.
The WP system’s principles for the control of work activities and risk are based on the
requirement that one group holds the area/operational responsibility and another
group is responsible for the execution of the work. In principle, this means that during
the operational and safety preparations, prior to starting the work and during its
execution and completion, there are two independent parties. Both groups or parties
have specific duties and responsibilities during the WP process.
One party is defined as the “owner” and is the approver/ area/operations responsible
for the equipment and facility. The other party is defined as the “supplier” and is
responsible for the execution of the required work to be carried out on the equipment
or facility. In this way, the WP can be considered a contract between two different
parties.
In small organisations, where the approver/area/operational responsibility (“owner”)
and executing responsibility (“supplier”) are handled by the same group, efforts must
still be made to actively fulfil the relevant roles associated with clearing WPs for
execution so that the intention of internal control is fulfilled.
3.3.2 Area/operational responsibility
The person responsible for the area/operations must have knowledge of the
system/facility and competence relating to the operation of relevant systems and
areas. The most important duties and expectations of the area/operations responsible
are as follows:
 Maintain a complete overview of and control over barriers, systems and areas
in operation and ongoing work activities
 Administer the required isolation of energy sources, mechanical or electrical
 Undertake safety preparations relating to the system or area in operation prior
to starting the work
 Ensure that it is safe to execute the planned work at the work site prior to
starting the work. Carry out thorough checks at the work site together with the
executing skilled worker. Risks shall be identified and mitigated
 Reactivate systems and remove isolations when the work is completed and
verify that it is safe to return the equipment to normal operation
 Maintain control of interfacing activities associated with systems and areas in
operation
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3.3.3 Executing responsibility
The parties executing the work must have the professional competence required to
carry out the work. The most important duties and expectations of the executing
workers are as follows:






Have the necessary professional competence to carry out the specific work
Undertake safety preparations associated with the work task
Ensure that all necessary work preparations are carried out and that the
appropriate tools are available at the work site
In cooperation with the persons responsible for the area/operations, ensure
that risks are identified and mitigated so that it is safe to carry out the planned
work at the work site
Carry out the work in accordance with the requirements given in the WP
and relevant procedures
Keep the work site in a clean and tidy state during execution of the work, and
leave the work site clean and tidy when the work is completed
3.3.4 Coordination of work permits and simultaneous activities
The management shall ensure that there are routines in place on board the installation
which ensure that simultaneous activities and interfaces are coordinated, and that any
incidents caused by an operation do not escalate due to other simultaneous
operations. WPs must be coordinated at a daily coordination meeting on the
installation.
The approver/area/operations supervisor or area technician may assume
responsibility for the coordination and handling of interfaces for WP level 2 in
accordance with the guidelines of the individual operating company.
3.4 Planning and preparation requirements
3.4.1 Application process
Preparation of the work permit
The unit responsible for the execution of the work prepares the WP.
Administrative handling
The individual installation shall have an administrative process which ensures that all
necessary quality requirements relating to the administration of WPs are fulfilled.
The importance of dialogue and cooperation during the planning stage
Management shall ensure that the local application process ensures the necessary
contact and dialogue between the applicant and approver/ area/operations
responsible during the planning phase of the work. This may include activities such as
joint reviews of the work and assessments at the planned work site when this is
considered necessary due to the nature of the work.
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3.4.2 Validity, completion of the form and changes to work permits
Agreement between work description and work permit
The work described in the WP must be in accordance with the WO or any other
existing job package / work description associated with the work.
Completeness/accuracy
The WP is not valid unless the form is correctly and completely filled out and features
all the required approvals.
Changes to the work permit must not be made
A completed and approved WP must not be changed. If changes are required, the WP
must be reprocessed. Exemptions to this apply in cases where a need for stricter
operational or safety preparations is identified.
3.4.3 Application period, duration and extension
Application period
A WP application shall be made for planned work tasks to be carried out during the
coming night shift and subsequent day shift.
Duration
A WP has a normal validity of up to 12 hours and expires at the end of the day or night
shift.
Concerning the duration of WP level 2
The operating company may implement a scheme that allows a WP level 2 to be
approved for a period of up to 14 days and a maximum of seven (7) shifts. This saves
having to print out and approve a new original each day. However, it is emphasised
that beyond this the same requirements apply regarding maintaining an overview,
control, clearance and completion of the work on a daily basis. If the company chooses
to implement such a scheme, the WP level 2 form in Appendix B4 is used.
Extension
A WP may be extended for up to a maximum of 4 hours if the work is continued with
the same crew.
Long-term isolation of safety systems
An overview and control of safety systems that are isolated/deactivated over longer
periods shall be maintained in accordance with the routines of the individual
operating company.
3.4.4 Restrictions to the scope of a work permit
If there is more than one activity/operation included on a WP, it must be ensured that
there are no misunderstandings regarding which parts of the work have been cleared
for execution.
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3.4.5 Restrictions regarding the execution of a work permit
Work that may involve risk of the release of hydrocarbons
Work that may result in the release of hydrocarbons is not permitted until all WPs for
hot work class A and entry permits for areas that may be exposed have been
suspended. The suspension of permits for hot work class B shall be considered in each
individual instance.
Restrictions due to simultaneous activities / simultaneous drilling and
production
The individual installation will have special procedures regulating simultaneous
activities.
3.4.6 Preparing the work permit; planning of operational and safety
preparations
The applicant
The applicant shall prepare the work description, identify risks and suggest the
necessary operational and safety preparations/measures required for the work the WP
is being applied for.
Approver/area/operations supervisor
The approver/area/operations supervisor shall review the proposed measures and
specify other required measures if necessary.
Cooperation and dialogue during the planning stage
A close dialogue between the applicant and the approver/area/operations supervisor
will often be necessary during the planning stage. Both parties have a responsibility to
consider the need for a joint review and assessment at the planned work site as a part
of the planning process.
Use of safe job analysis (SJA)
Whether the work requires an SJA should be assessed throughout all stages of the work,
from the planning stage until the work is carried actually out. It is a duty of everyone
involved in the planning, approval and execution of WPs to consider the need for an SJA.
3.5 Approval requirements
WP Level 1
 A WP level 1 must be approved by the
approver/area/operations supervisor,
checked/quality-assured by an HSE
function on the installation if such a
function exists, and approved by the
overall approver / platform manager.
 All level 1 WPs shall be discussed at the
installation’s daily meeting for the
coordination of WPs and simultaneous
activities.
WP Level 2
 As a minimum, WP level 2 should be
approved by the
approver/area/operations
supervisor.

The approver/area/operations
supervisor must ensure that
interfaces to other areas, activities
and work operations are considered
as a part of the approval.
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3.6 Preparation and control requirements prior to starting the work
3.6.1 Preparations prior to starting the work
Area technician
Prior to clearing the work for execution, the area technician must ensure that the
necessary operational and safety preparations, including the identification of risks and
measures, have been completed as required by the WP and in accordance with
applicable procedures.
Executing skilled worker
The executing skilled worker shall carry out the required operational and safety
preparations and take the identified risks into consideration in accordance with the
WP and applicable procedure(s) for the relevant activity.
3.6.2 Control and clearance of the work at the work site and in the Central
Control Room (CCR)
The work process for the WP must include controls prior to commencement of the
work in order to ensure that:
•
The work site is safe
•
The necessary deactivations and isolations of energy sources have been
carried out
•
The work does not represent a safety conflict in relation to any other work
that is planned or currently ongoing
•
Those affected by the work have been informed of any possible impact on
their own work activities
•
Appropriate communication and coordination meetings are held and
important decisions are documented
Executing skilled worker
The executing skilled worker shall undertake the control tasks described above, and
by signing the WP confirms that instructions regarding operational and safety
preparations and identified risks have been understood and have been / will be
carried out / taken into consideration.
Area technician
The area technician shall check that the WP form has been properly filled out and
features the necessary approval signatures, and assess whether the work may be
started, taking into account other activities that are in progress in the area. By signing
the WP, the area technician confirms that the work site has been cleared in accordance
with instructions and identified risks.
CCR technician
The CCR technician shall assess whether the work may be allowed to start, taking into
consideration other activities currently in progress on the installation. The CCR
technician confirms that the work has been cleared by the CCR by signing the WP or
via another documented scheme.
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The responsibility for maintaining an overview, control and clearance of WP level 2 may
be delegated to the approver/area/operations supervisor or area technician in
accordance with guidelines issued by the individual operating company.
3.6.3 Isolation of safety systems and isolation/locking of electrical
equipment
The isolation of safety systems and isolation/locking of electrical equipment shall be
registered on the WP form or other isolation document used within the operating
company.
3.7 Requirements during the execution of the work
3.7.1 Starting the work
The work may start when the necessary approvals have been given and the work site
has been checked and cleared. An approved WP must be kept at the work site and shall
be reviewed by involved personnel prior to starting the work.
3.7.2 Overview and control during the work
CCR
An overview of ongoing work that requires a WP level 1 must be kept in the CCR or the
location at which this function is carried out in the context of WPs. The
responsibility for maintaining an overview of WP level 2 may be delegated to the
approver/area/operations supervisor or area technician.
Planned and ongoing activities, as well as any extended WPs, shall be reviewed during
handovers at shift changes.
Area technician
The skilled worker responsible for the plant and area(s) shall ensure the necessary
control during the work, when the work is stopped or suspended, and upon
continuation of the work.
Planned and ongoing activities, as well as any extended WPs, shall be reviewed during
handovers at shift changes.
Executing skilled worker
The executing skilled worker must contact the area technician regarding stopping and
resuming the work.
3.7.3 Cancellation or suspension of a work permit
A WP may be cancelled or suspended at any time, depending on the situation on the
installation or at the work site. The work shall be stopped if:
•
•
An emergency alarm sounds on the installation
The preconditions and requirements that form the basis for the WP are no
longer fulfilled
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Revision no: 5
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•
Page: 22
A hazardous situation arises or operational conditions necessitate stopping the
work
The work may be resumed when permission to do so is given over the PA system by
the CCR, or continuation of the work is cleared by the area technician.
The WP is rendered invalid if:
• The work has not been started within an hour of being cleared for execution
and a gas test being carried out, when a gas test is required prior to starting the
work
• If the scope of the work has changed and is no longer in accordance with the
description in the WP
3.8 Requirements upon completion of the work
3.8.1 Final control of the work and reactivation of safety systems
Executing skilled worker
The executing skilled worker shall undertake a final control at the work site when the
work has been completed. By signing the WP, the executing skilled worker confirms
that the work has been completed and that the work site is clean, tidy and secure.
Area technician
The area technician shall carry out a final control at the work site when the work has
been completed in order to ensure that:
• The work has been completed in a satisfactory manner
• All isolations and disconnections have been removed, and that any safety
systems disconnected locally by the area technician prior to or during the work
are reconnected, and that this is noted on the WP
• The work site and systems have been returned to operation and reactivated in a
safe condition and that the work site has been cleaned up
The area technician shall undertake a final inspection together with the executing
skilled worker. By signing the WP, both the area technician and executing skilled
worker confirm that the work site is accepted, and indicate whether tags/locks have
been removed and whether the equipment is ready for operation.
CCR technician
When the area technician and the executing skilled worker have completed the final
section of the WP, the CCR technician shall reactivate any deactivated safety functions
where relevant and register this on the WP form. By signing the WP, or using another
documented scheme, the CCR technician confirms that the work has been cleared by
the CCR.
The responsibility for maintaining an overview, control and clearance of WP level 2 may
be delegated to the approver/area/operations supervisor or area technician in
accordance with the guidelines of the individual operating company.
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3.8.2 Level 2 work permit over several days
The operating company may decide that a WP level 2 may be approved with a duration
of up to 14 days and a maximum of seven (7) clearances. If this scheme is used, the WP
level 2 form in Appendix B4 applies. The signature table in the WP level 2 form is used
for the daily clearance/completion of the work. The signature table provides space to
clear/complete the same WP over several days, so that it is not necessary to issue and
approve a new WP for each day. It is emphasised that beyond this, the same
procedures apply as for a WP level 2 with a duration of one shift.
3.9 Transfer of experience, learning and improvement
Management is responsible for establishing routines that enable the transfer of
experience, learning and improvement. This includes periodic verification of how the
WP system is practised on the installation.
WPs are filed in accordance with the individual operating company’s guidelines.
3.10 Requirements regarding the training of personnel
Management is responsible for ensuring that all personnel who issue or use WPs
receive the necessary training in WP handling, the application of the WP procedure,
and the operational safety procedures associated with operations. This includes
completion of the Working Together for Safety (SfS) WP interactive e-learning course,
the training of safety guards (fire, entry and work over sea), and training in the use of
gas detectors and other safety and emergency equipment.
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4 WORK PROCESS FOR PLANNING AND EXECUTION OF WORK PERMITS
WPs are planned and executed in accordance with the main steps shown in the flow
diagram below.
Planning of the work permit
Approval of the WP
Operation and safety preparation
Work permit (WP)
Execution of the work
Completion and reinstatement
Experience transfer and learning
A detailed workflow with roles and cross-references to the relevant part of the WP
form is shown on the following pages.
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Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
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Date revised: 22.06.2015
Page: 27
5 STANDARD SAFETY REQUIREMENTS FOR LEVEL 1 WORK PERMITS
5.1 Introduction
The objective of this section is to assist in establishing a standard practice for
operational and safety preparations for WP level 1. The developed matrices represent
a compilation and systematisation of the requirements that are commonly practised in
the industry today, and aim to represent good operational practice. The individual
operating companies may set stricter requirements if necessary.
5.2 Matrices covering standard safety requirements for work permits
The matrices have been compiled to provide a concise overview of:
•
•
Prerequisites and limitations that apply to the execution of a given type of
work
Required necessary operational and safety preparations
The intention is that the matrices shall be used as checklists for different types of WPs,
and thereby support the introduction of a common model for WPs on the continental
shelf.
If several types of work are involved on the same WP, all the relevant matrices should
be taken into consideration.
Checklists are also included for fire, entry and safety guards, covering:
• Duties of the fire guard
• Duties of the safety guard during entry into confined spaces
• Duties of the safety guard during work over sea
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5.2.1 Hot work class A
Work with equipment and tools that constitute an effective ignition source and which when used in a normal manner may ignite
an explosive atmosphere and/or solid materials or liquids, i.e. high energy is given off in the form of sparks, an open flame or
electric arc, and/or the tool/equipment has a surface temperature that exceeds the ignition temperature for the exposed medium.
Typical ignition sources include:
- Welding
- Hot tapping of piping/vessels under pressure
- Ordinary grinding/cutting discs
- Heat shrinking with open flame - Preheating using an open flame
- Annealing
- Burning
Preconditions and limitations
Requires WP Level 1
WP not
Limitations for hot work class A depend on the production status, as well as the
required
Unclassified Approved
classification of the area in which the work shall take place.
Classified
area
Comments
area
workshop
a) All hot work class A requires a separate advance assessment in accordance with the
guidelines of the individual operating company.
b) Additional limitations associated with drilling and well operations will apply in
accordance with the procedures for simultaneous drilling and production given by the
individual operating company.
c) Not permitted during rundown/start-up of process systems when there is a risk of
hydrocarbon release.
d) Guidelines for the use of habitats are given by the individual operating company.
Yes
Is hot work A allowed – without habitat?
No
Yes (a)
Normal operation:
Is hot work A allowed – with habitat?
Yes
N/A
N/A
(a)(b)(c)(d)
Production shutdown:
Is hot work A allowed – without habitat?
Yes (a)(b)(c) Yes (a)
Yes
depressurised process plant
Is hot work A allowed – with habitat?
Yes
N/A
N/A
(a)(b)(c)(d)
Operational and safety preparations by area technician
1. An SJA must always be carried out prior to the work.
x
x
x
2. The equipment must be taken out of operation, depressurised, drained/emptied,
cleaned/rendered gas-free/made inert.
3. The equipment must be isolated/blinded from other parts of the plant.
x
x
4. Prevent release of oil/gas in the area. Undertake thorough evaluations of potential
x
x
leakage sources in the surrounding area.
x
x
5. Inspection of the work site: The area technician shall inspect the work site prior to
and during the work.
6. Gas measurement prior to the work.
x
x
7. All safety systems in the area/adjacent areas shall be operative/compensating
x
x
x
measures shall be implemented.
Operational and safety preparations by executing skilled worker
1. An SJA shall always be carried out prior to the work.
x
2. Gas measurement at the work site: Continuous gas measurement so that the work can x
x
be stopped and the equipment secured if gas is detected.
3. Verify mechanical isolation.
x
x
x
x
x
4. Fire extinguisher/fire prevention measures: Including shielding against sparks with
fire blankets, inspection at the rear side of the work site or behind walls in cavities,
removal or covering of flammable materials, removal of oil spills, gas bottle valves to
be closed during interruptions/work stoppages, electrical earthing of equipment.
Portable fire extinguisher/fire extinguishing equipment available at the work site.
5. Welding equipment safely located and earthed.
x
x
x
6. Continuous guard/radio communication in accordance with 5.2.11 Duties of the fire
x
x
guard.
7. Drains/outlets in the area plugged/covered.
x
x
8. Barriers/warning signage.
x
x
9. Coordination with CCR/area technician.
x
x
10. Procedures/checklists for the operation read and understood by involved personnel.
x
x
x
11. Special personal protective equipment for the operation noted on the WP in
x
x
x
accordance with the relevant work.
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5.2.2 Hot work class B
Page: 29
Requires WP Level 1 in
classified areas
Work that constitutes a potential ignition source and which is not defined as hot work class A.
Typical ignition sources include:
•
Heat shrinking with an electrical heat gun
•
Sandblasting, needle picking
•
Electrical hand tools
•
Electrical isolation testing (megger testing)
•
Soldering equipment
•
All electrical or battery-operated equipment/apparatus/instruments that are not Ex-protected in accordance
with the classification of the areas in which they will be used
•
Rotating steel brushes
Preconditions and limitations
Limitations associated with drilling and well operations will apply in accordance with the procedures for simultaneous
drilling and production given by the individual operating company.
Comments
In unclassified areas this type of work may be performed with a WP level 2.
Operational and safety preparations by area technician
1. Prevent release of oil/gas in the area. Undertake thorough assessment of potential leakage sources in the surrounding
area.
2. Inspection of the work site: The area technician shall inspect the work site prior to and during the work.
3. Gas measurement prior to starting the work (in classified areas).
4. All safety systems in the area/adjacent areas must be operative/compensating measures implemented.
Operational and safety preparations by executing skilled worker
1. Gas measurement at the work site: Continuous gas measurement (in classified areas) so that the work can be stopped
if gas is detected.
2. Fire extinguisher/fire prevention measures: Use a suitable fire extinguisher. Consider whether removal or covering of
flammable materials is necessary with regard to the work equipment to be used.
3. Procedures/checklist for the operation read and understood by involved personnel.
4. Special personal protective equipment for the operation must be noted on the WP in accordance with the relevant
work.
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5.2.3 Entry into confined spaces
Page: 30
Requires WP Level 1
Complete or partial entry into confined spaces or areas that are not normally naturally or mechanically ventilated, such as
tanks, pipes, chain lockers and exhaust ducts.
Preconditions and limitations
1. All pipelines connected to the container must be isolated using a spade blind. In special cases, other means of isolation
may be accepted provided that the barrier is kept under continual control during all phases of the work. If such an
alternative isolation method is used, it shall be specified in the individual operating company’s work procedures.
2. The container/confined space must not be entered until the area technician has ensured that it is safe to do so and has
given clearance to start the work.
3. A WP for entry is only valid for entry into the space and a visual inspection. A separate WP must be used for any other
work to be carried out.
4. Documentation covering a minimum of the following shall be available:
 Isolations/valve and blind lists
 Marked-up drawings
This documentation must be linked to the WP and stored in accordance with the guidelines of the individual operating
company.
Breathing air equipment must be in accordance with NS-EN 12021 and the Labour Inspection Authority’s regulations
regarding action and limit values and the Manufacturer Regulations (Produsentforskriften).
order
no. 441,and
ref. safety
SfS Recommendation
09N/2003.
Operational
preparations by
area technician
1. An SJA shall always be carried out prior to the work.
2. The equipment shall be depressurised, drained/emptied, cleaned/rendered free of gas.
3. Equipment shall be isolated and blinded from other parts of the plant, including electrical and mechanical isolation.
4. Equipment shall be vented. Extra ventilation shall be used as required.
5. Measures against radioactive radiation: If radioactive scale deposits are suspected inside containers or pipes, the
work must not proceed until the radiation levels have been measured. Permanently installed radioactive sources must
be closed/shielded.
6. Inspection of the work site: The area technician shall inspect the work site prior to and during the work. The time
interval for new gas tests must be specified on the WP.
7. Other: If iron sulphide is expected, the tank/container should be cleaned with water. Iron sulphide deposits should be
kept moist and removed.
8. Gas measurement:
 Gas measurements including an oxygen test and other relevant industrial hygiene measurements must be
performed prior to entry.
 Results of the measurements shall be noted on the WP.
 If the work has not started within one hour of clearance for entry being given, new gas tests shall be performed
and a new clearance obtained.
 The concentration of flammable or toxic substances shall be reduced to a level that is not harmful to personnel
when entry takes place without the use of protective respiratory equipment.
 The oxygen level must be 20.9%.
Operational and safety preparations by executing skilled worker
1. An SJA shall always be carried out prior to the work.
2. Gas measurements at the work site: Continuous gas/oxygen measurement so that the work can be stopped if gas/lack
of oxygen is detected.
3. Verify mechanical isolation.
4. Electrical isolation/locking as necessary.
5. Continuous guard/radio communication in accordance with 5.2.12 Duties of the safety guard.
6. Barriers/warning signage.
7. Chemical datasheet or action card read and available.
8. Procedures/checklists for the operation read and understood by involved personnel.
9. Special personal protective equipment for the operation must be noted on the WP in accordance with the relevant
work. See also 5.2.12. Duties of the safety guard.
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10. Other requirements /preparations prior to entry:
 All lamps/lighting used inside the container shall be of an explosion proof type when entering an atmosphere that
may contain hydrocarbons.
 All equipment used for the ventilation of containers must be explosion-proof, preferably pneumatically-operated.
 Use of electricity is not permitted in tanks in which an explosive atmosphere may be present. If electrical
lighting/equipment is used (after the tank/container has been cleaned and there is no risk of explosion) a
suitable earth fault protection relay must be used.
 Escape routes must be identified and known to involved personnel.
 Gas bottles must not be brought inside tanks/containers. Gas hoses must be removed from the tank/container
and the bottle valves closed whenever the work is stopped.
 Special caution must be exercised when entering tanks/spaces that have been rendered inert.
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5.2.4 Isolation of safety system
Page: 32
Requires WP Level 1
Work that involves the isolation, testing and bypassing of safety systems. Safety systems include but are not limited to:
 Emergency shutdown systems
 Fire-fighting systems
 Blowdown system
 Detection systems
 Alarm systems
 Emergency power and non-interruptible power supplies
 Evacuation systems and equipment
 PA systems
For a detailed overview of safety systems, refer to the provisions for the specific installation.
Preconditions and limitations
1.
2.
3.
4.
The isolation of safety system functions shall always be assessed on the basis of the consequences and risks
associated with the isolated function. Isolation shall always be considered with regard to other activities on the
installation, including drilling and well operations, hot work and other work on safety systems. Compensating
measures shall be implemented.
The person responsible for areas/systems affected by the isolation of safety systems must be informed of the work
in advance. If the isolation affects more than one installation, the relevant installations must be contacted for
coordination.
Work to be undertaken while the safety system is disconnected must be planned with the smallest scope and
shortest duration possible.
An up-to-date overview of isolated safety systems on the installation must be available at all times.
Comments
1. Routine testing as a part of the preventive maintenance of fire and gas detection systems, emergency shutdown
systems and PA systems, and the testing of emergency generators, is not regarded as isolation of a safety system
when performed in accordance with an established programme where dedicated personnel are present at the
specific location at the facility and in the CCR. Such work may be performed with a WP level 2.
2. Brief isolation of fire and gas system detectors during routine draining/bleed off performed by the area
technician may be carried out without a WP.
3. Brief isolation of single devices in the process shutdown system, performed by the CCR technician in the event of
special operational needs such as the start-up/run down of systems, draining of level switches, etc., may be
performed without a WP.
Operational and safety preparations by area technician
1. Safety tags/locking.
2. Isolation of safety system: Compensating measures must be implemented so that sufficient barriers are in place at
all times. Examples of such compensating measures include use of a safety guard in the area, placing additional firefighting equipment in the area, installing additional detection equipment, the use of additional communications
equipment, the use of alternative evacuation/rescue equipment, etc. Isolation and reactivation must be logged in
accordance with the guidelines of the individual operating company.
in the individual
operating
companies.
Operational
and safety
preparations
by executing skilled worker
1. Continuous guard/radio communication must be considered as a compensating measure.
2. Barriers/warning signage to be considered in each individual instance.
3. Coordination with CCR/area technician.
4. Procedures/checklists for the operation read and understood by involved personnel.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.5 Work on hydrocarbon system
Page: 33
Requires WP Level 1
Work on piping system, tanks and associated components that pose a risk of the release of produced oil/gas/condensate.
Other work on hydrocarbon systems may be carried out with a WP level 2.
Routine work with existing procedures may be carried out with a WP level 2.
Preconditions and limitations
Documentation that covers a minimum of the following shall be available:
 Isolation/valve and blind lists
 Marked-up drawings
This documentation must be linked to the WP and be stored in accordance with the individual operating company’s
guidelines.
Operational and safety preparations by area technician
1. Depressurisation of the equipment.
2. Draining/emptying if piping system/equipment is to be opened.
3. Cleaning/removal of gas to be assessed with regard to the work to be carried out.
4. The equipment must be isolated/blinded from other parts of the plant in accordance with the individual operating
company’s guidelines if the piping system/equipment is to be opened.
5. Safety tags/locking.
6. Other: Checks for possible leaks must be performed and the affected equipment must be checked for H2S and benzene
where these are likely to be present.
Operational and safety preparations by executing skilled worker
1. Verify mechanical isolation.
2. Consider electrical isolation/locking.
3. Coordination with CCR/area technician to be assessed with regard to the work to be performed.
4. Chemical datasheet or action card read and available.
5. Procedures/checklists for the operation read and understood by involved personnel.
6. Special personal protective equipment for the operation must be noted on the WP in accordance with the relevant
work.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.6 Pressure testing
Page: 34
Requires WP Level 1
Testing of newly installed or modified tanks/piping/Xmas trees in accordance with an approved pressure testing
procedure and testing above working pressure and/or design pressure.
Preconditions and limitations
1. Executing personnel must have knowledge of the equipment to be tested (design conditions, pressure rating, etc.)
and the equipment to be used during testing.
2. A test procedure for the relevant job must be available, and include a work description covering isolations/valve
and blind lists and marked-up drawings.
3. A liquid test medium (water) shall normally be used. If any other test medium is used as an exception, this must
be clearly stated on the WP.
Operational and safety preparations by area technician
1. Isolation/blinding.
2. Safety tags/locking.
Operational and safety preparations by executing skilled worker
1. Verify mechanical isolation.
2. Continuous guard/radio communication.
3. Implement barriers/warning signage.
4. Coordinate with CCR/area technician.
5. PA announcement prior to and upon completion of the work.
6. Procedures/checklists for the operation read and understood by involved personnel.
7. Other requirements/preparations: Equipment used for pressure testing must be calibrated, approved and
certified. Alternative escape routes must be established if normal escape routes are blocked.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.7 Work over sea
Page: 35
Requires WP
Level 1
Work over sea refers to work that takes place outside permanent railings where there is a risk of a person/persons
falling into the sea.
The use of rope access (RA) is not defined as work over sea when it is performed in accordance with “NS 9600 (SOFT
Standard); Arbeid I tau (Rope access techniques)”. Ref. section “Other activities/critical operations requiring WP Level
1”.
Work in a hydraulic basket in a “moon pool” and on approved scaffolding is not defined as work over sea when extra
barriers are used.
Example of extra barriers include:
 Fall arrest equipment
 Man-riding belt
 Net
 Scaffolding with extra high railings, erected in accordance with class 3 and certified as class 2. The
scaffolding shall be re-certified once a week and following any effects of external influences such as
inclement weather and strong winds
Preconditions and limitations
1. Wind: 30 knots measured at 10 m above sea level.
2. Waves: Max. wave height of 5 m (equivalent to 3 m significant wave height).
Emergency response: Establish MOB response.
Lighting/visibility: The work must only take place if there is sufficient lighting and visibility for the work and the
rescue of personnel.
3. Roll/movement. The work must not take place if the roll or heave of a floating vessel poses a risk to involved
personnel.
4. Diving operations: In the event of diving close to the work site, the person responsible for the operation on board
the diving vessel shall decide whether work over sea may be permitted.
Comments:
a. Stricter limitations may apply on the individual installation due to possible launches, crane limitations, etc.
b. For floating production installations with drilling activities, work over sea may be governed by special working
procedures for the specific installation.
Operational and safety preparations by area technician
1. Other: Avoid effluent/overflow from operational systems when personnel are working below cellar deck.
Operational and safety preparations by executing skilled worker
1. Continuous guard/radio communication in accordance with 5.2.14 “Duties of the safety guard during work over
sea”.
2. Procedures/checklists for the operation read and understood by involved personnel.
3. Special personal protective equipment for the operation: Life buoy with line and light must be readily available.
Personal protective equipment shall adapted to the work situation and may include a life vest/jacket, safety harness
with integrated buoyancy aid, safety line and rescue belt.
4. Other requirements/preparations: The need for measures to prevent dropped objects falling to lower levels or onto
vessels must be assessed.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 36
Requires WP Level 1
5.2.8 Work with radioactive substances
Work with radioactive substances/isotopes including work on systems with radioactive scale deposits (LSA).
Preconditions and limitations
Regulations issued by the Norwegian Radiation Protection
Low radiation activities
Use of
Authority (Statens Strålevern) must be complied with when
radioactive Instrumentation Low Specific
working with/using radioactive sources. The matrix below only
with radioactive
isotope
Activity
includes the requirements that directly relate to WPs.
sources
deposits (LSA)
1.
2.
3.
4.
5.
Only authorised personnel may perform work involving
radioactive substances and a radiation protection supervisor
must be present at the installation.
LSA contaminated equipment and materials are classified as
radioactive if the radiation activity exceeds
10Bq/g of 226Ra or the dose rate on the outer surface is over
double the background radiation in the area.
Personnel who are to assist during radiography works or with
LSA materials must have received information and training
regarding radiation hazards and relevant protection.
x
x
x
x
x
The dose rate (Geiger counter) for exposed personnel must be x
measured prior to starting the work.
The emergency response plan for radiation protection must be x
known and understood and emergency equipment must be
available.
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Operational and safety preparations by area technician
1. During LSA activities the area technician’s operational and
safety preparations will most often be associated with
requirements regarding entry into confined spaces or work on
hydrocarbon systems.
2.
3.
Measures against radioactive radiation.
Other: Radioactive radiation may affect instruments that are
based on radioactive measurements. The impact on process
equipment with such instruments must therefore be evaluated
when using radioactive isotopes.
Operational and safety preparations by executing skilled
worker
1. Barriers/warning signage/PA announcement: Areas where the
radiation level may exceed 7.5 micro Sv/hour are defined as
hazardous areas that must be monitored, cordoned off and
marked with signage that declares a radiation hazard. Other
work activities are prohibited in such areas. PA announcement
prior to starting and upon completion of the work.
2. Coordination with CCR/area technician.
3. Procedures/checklist for the operation read and understood by
involved personnel.
4. Special personal protective equipment for the operation:
Protective equipment shall be used in order to prevent skin
contact with LSA materials or the inhalation of dust. Personnel
working with isotopes must carry a personal dosimeter. This
also applies when working with LSA if the exposure exceeds
7.5 micro Sv/h.
x
x
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.
Other requirements/preparations: LSA materials must be kept
moist in order to prevent the inhalation of dust. Openings on
LSA contaminated equipment shall be covered or wrapped in
plastic. Personnel who handle LSA materials must pay special
attention to personal hygiene and thoroughly wash their hands
prior to consuming food/beverages.
LSA = Low Specific Activity radioactive scale
Page: 37
x
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.9 Work with dangerous substances
Page: 38
Requires WP Level 1
Work operations involving chemical products classified as chemical substances and mixtures that may be
hazardous to health or the environment, or pose a risk of fire or explosion.
Examples of work with dangerous substances:
Fire/explosion hazard: Handling/use of flammable chemicals where the volume and/or proximity to ignition
sources poses a higher risk of ignition.
Environmental hazard: Work that poses an increased risk of discharges of chemicals to sea, where the volume that
shall be used exceeds 1 m3.
Health hazard: Heating of materials that are surface-treated and which may result in the thermal decomposition of,
for example, paint. Work on pipe systems, tanks and associated components that may pose a risk of the release of
chemical products. Grinding, sandblasting or cutting of structures or work that generates dust or hazardous
chemical pollution that is harmful to health and to which other personnel may be exposed.
A WP level 2 is required in the event of:
- Painting works involving the use of brushes and rollers, regardless of the hazard category.
- Work on piping systems, tanks and associated components that do not entail a risk of the release of dangerous
substances, or which have a lower risk.
Exemption from WP: The individual operating company may decide that work operations or tasks in which
chemicals are handled may be carried out without the use of a WP, ref. chapter 1.2.6. Such activities may include:
- Normal operating activities within production, drilling, logistics, maritime operations or hotel management if
relevant procedures, safety datasheets and executed risk assessments with suggested barriers have been read
and understood by the executing personnel.
- Handling of chemicals in closed systems (pipes/hoses) with drip-free connections that prevent spills during
connection and disconnection.
- The use of small volumes of red or black chemicals (e.g. tubes of adhesive or sprays) where the work
description forms part of the risk assessment.
Preconditions and limitations
1. Chemicals shall be labelled in accordance with regulations and approved for use on the installation in
accordance with the guidelines issued by the individual operating company.
2. Safety datasheets shall be available.
Operational and safety preparations by area technician
1. Depressurisation of equipment if piping system/equipment is to be opened.
2. Draining/emptying if piping system/equipment is to be opened.
3. Cleaning/removal of chemical vapours must be considered with regard to the specific work to be carried out.
4. Isolation/blinding of equipment from other parts of the plant in accordance with guidelines issued by the
individual operating company if the piping system/equipment is to be opened.
5. Safety tags/locking.
6. Other: Check for leaks. Safety datasheet or action card must be reviewed prior to starting the work.
Operational and safety preparations by executing skilled worker
1. Verify mechanical isolation if pipe system/equipment is to be opened.
2. Barriers/warning signage: The area must be cordoned off if there is a risk that other personnel may be exposed.
3. Safety datasheet or action card must be available and reviewed by executing personnel prior to starting the
work.
4. Procedures/checklists for the operation read and understood by involved personnel.
5. Special personal protective equipment for the operation: Protective equipment shall be used in accordance with
the safety datasheet or action card. Safety equipment such as an emergency shower and eyewash station shall
be available.
6. Other requirements/preparations: Products shall be stored and used correctly in accordance with the safety
provisions outlined in the safety datasheet.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.10
Work with explosives
Page: 39
Requires WP Level 1
Preparation, arming and control of explosives.
Preconditions and limitations
1. Only authorised personnel may carry out this type of work.
Operational and safety preparations by area technician
Operational and safety preparations by executing skilled worker
1. Barriers/warning signage: The area must be cordoned off and marked with warning signage.
2. PA announcement prior to starting the work.
3. Procedures/checklists for the operation read and understood by involved personnel.
4. Other requirements/preparations: In the event of well operations involving the use of explosives, the perforation and
safety procedures must be described in the relevant programme. Radios must be secured if radio silence is required.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 40
5.2.11 Fire, entry and safety (FES) guards
The following prerequisites are used for the selection of personnel to act as FES guards:
-
FES guards shall not be connected to rescue efforts.
Personnel who hold valid basic safety and emergency response training for the continental
shelf have the necessary general competence.
Personnel who have completed basic training for onshore facilities (two day course) hold the
necessary general competence.
It must be ensured that no conflict arises between the work tasks of FES guards and other
work or rescue activities and/or physical work.
It is recommended that FES guards are equipped with a vest that renders their role visible.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.12
Page: 41
Duties of the fire guard
The fire guard must:
Have received necessary training in accordance with company guidelines.
Be identified/marked so that it is clearly visible who holds the guard function.
Have participated in any SJA that has been performed/have reviewed the SJA.
Have located the nearest manual fire call point/telephone.
Have agreed a stop signal with executing skilled workers.
Have established radio communication with the CCR if required by the WP.
Have an intact dry chemical fire extinguisher at the work site and other firefighting equipment as required
by the WP.
Have located the nearest fire hydrant/hose reel and checked that it is functioning.
Have located the release button for the relevant sprinkler system.
Ensure that the involved personnel are familiar with the escape routes.
Have checked and placed a portable gas detector at the work site.
Know where the electrical power supply to welding/electrical equipment can be switched off.
Ensure that the area is tidy and cleared of flammable materials, including behind and beneath the work site
and inside cavities.
Ensure that the necessary equipment is covered with fire blankets.
Ensure that drains have been plugged/covered.
Ensure that gas bottles have been secured.
Ensure that hoses/cables are in good condition and suspended in a safe position.
Ensure that fire blankets or the equivalent will prevent the spread of sparks.
Not take an active part in the work and always be present when hot work is underway.
Monitor the work situation and surroundings so that the work can be stopped should a situation that
necessitates this arise.
Stop the work if the portable gas detector’s alarm sounds.
Switch off electrical equipment/close gas bottles.
Inform the area technician if safety systems have been isolated so that these can be reinstated.
Be present at the work site during heat treatment until the temperature has cooled to 200 degrees Celsius.
Ensure that no ignition sources that may ignite a fire at a later stage are left at the work site.
Alert fellow workers and sound the fire alarm. Inform the CCR.
Undertake immediate rescue efforts if such efforts can be made without risk to self or others.
Shut off equipment/electrical power supply.
Start fire-fighting/extinguishing efforts.
Remove gas bottles from the area.
Alert fellow workers and stop the work.
Shut off equipment/electrical power supply and secure the work site.
Muster according to the station bill.
OK
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.13
Page: 42
Duties of the safety guard during entry into confined spaces
The safety guard must:
Have received necessary training in accordance with company guidelines.
Be identified/marked so that it is clearly visible who holds the guard function.
Have participated when the SJA was performed / have reviewed the SJA.
Communication/
Have located the nearest manual fire call point/telephone.
warning
Have established radio communication with the CCR and visual or radio contact
with the personnel performing the entry job.
Have agreed a stop signal with executing personnel.
Emergency response Have equipment for the rescue of personnel available at the work site, such as a
/ preparations
safety line, rescue harness, explosion-proof flashlight, breathing apparatus with
buddy mask and other rescue equipment as specified in the WP.
Be capable of using/operating the rescue materials/equipment.
Check and be able to use breathing equipment used for rescue.
Ensure that involved personnel are familiar with the escape routes.
During the work
Not take active part in the work and always be present when entry work is
underway.
Be located near the entrance to the tank/container/space, keep watch and monitor
the number of personnel who enter.
Monitor the work situation and surroundings so that the work can be stopped
should a situation that necessitates this arise.
Stop the work if the portable gas detector sounds an alarm.
In the event of
Secure equipment/the work site.
interruptions to /
Inform the area technician if safety systems have been isolated so that these can be
completion of the
reactivated.
work
Actions in the event Alert fellow workers and sound the alarm. Inform the CCR.
of undesirable
Undertake immediate rescue efforts if such efforts can be made without risk to self
incidents during
or others.
entry into confined
Secure equipment/the work site.
spaces
Alert fellow workers and stop the work.
Other alarm
situations
Secure equipment/the work site.
Muster according to the station bill.
General
OK
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
5.2.14
General
Page: 43
Duties of the safety guard during work over sea
The safety guard must:
Have received necessary training in accordance with company guidelines.
Be identified/marked so that it is clearly visible who holds the guard function.
Have participated in any SJA that has been performed/have reviewed the SJA.
Communication /
warning
Have located the nearest manual fire call point/telephone.
Have established radio communication with the CCR/radio room/MOB function
and the work site.
Agree upon the communication routine with the involved parties, including the
exchange of information at start-up, upon completion, and in the event of
interruptions to the work.
Communication channels shall be checked prior to starting the work.
Emergency response Ensure that the MOB function is informed and operational prior to starting the
work.
/ preparations
Ensure that involved personnel are familiar with the escape routes.
Become familiar with the weather limitations for work over sea and the prevailing
weather conditions.
During the work
Not take active part in the work and always be present when work over sea is
underway.
Remain on the permanent deck of the installation and have an unobscured view of
the executing personnel.
Maintain an overview of the number of personnel involved in the work, keep watch
and sound the alarm should personnel fall overboard.
Monitor changes in weather conditions/visibility and light, and stop the work if the
preconditions and limitations for the work are exceeded.
Monitor the work situation and surroundings so that the work can be stopped
should a situation that necessitates this arise.
Interruptions /
Secure equipment/the work site.
breaks / completion Inform the area technician if safety systems have been isolated so that they can be
of the work
reactivated.
Adhere to the agreed communication routine.
Monitor personnel until everyone has reported back to a safe location on the
permanent platform deck.
Actions in the event Alert fellow workers and the CCR/MOB function and sound the alarm.
of “man over board” Throw out a life buoy.
Maintain visual contact with the person.
Secure equipment/the work site.
Other alarm
Alert fellow workers and stop the work.
situations
Secure equipment/the work site.
Muster according to the station bill.
Monitor personnel until everyone has reported back to a safe location on the
permanent platform deck.
OK
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 44
APPENDIX A: GUIDELINES FOR COMPLETION AND USE OF THE WORK
PERMIT FORMS
A.1 Introduction
These guidelines have been written to assist the user in the completion and use of the
WP forms.
A.2 Planning the work
The applicant first selects the correct form, depending on whether the application is
for a WP level 1 or WP level 2, and checks the relevant box(es) to indicate the type(s)
of work involved.
Section 1, top section
Logo field
Field for WP no. / bar
code
Field for activity / work
operation
Identification of level and type of operation/work
Space for company logo
Space for WP number and bar code to be
printed/written
Check the box to indicate the type of activity (does not
apply for level 2)
The applicant then completes the fields in the form that identify the work to be
carried out and the person applying for the WP.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Section 1
Applicant name
Discipline
Phone
Work description
Identified risks
Equipment/tools
Installation
Location/module
Deck
Tag/line no.
Zone
Attachment
SAFE JOB ANALYSIS NO:
REQUIRES APPROVAL FROM
ELECTRICAL DEPARTMENT
WORK ORDER NO.:
OPERATION NO.:
ISOLATION NO.:
Day/Night/Ongoing work
Date
From Hr
To Hr
Extension to hr:
Page: 45
Identification of the work and the person who is applying
for the permit
Name of the applicant in block capitals.
Name of the discipline/department that is applying for the
WP/will carry out the work.
Internal telephone number on the installation where the
applicant can be reached.
Description of the work.
A description of the risks associated with the work to be
carried out. What hazards may be generated by the work?
What types of accidents may occur and what is the worst that
could happen? What forms of energy are in the immediate
vicinity, and what risks might these represent? Measures must
be implemented in order to mitigate the identified risk.
Short description of tools and equipment that will be used, so
that it is possible to identify the required operational and
safety preparations based on this and the work description.
Name of the installation where the work will take place.
Name of the area/module where the work will take place.
Name of the deck where the work will take place.
Identification of tag/line number to be worked on.
State the area classification of the area where the work will
take place.
Reference to attachments such as P&ID, ISO drawings or
similar.
Check the box if an SJA is required. Fill in the SJA number if
applicable.
For companies that have a work process where an electrical
department is involved in the approval of WPs. Checking this
box implies that an approval from the electrical department is
required in accordance with company guidelines. Usually, the
approver/area/operations supervisor checks this box. (When
this requirement is specified, the responsible person in the
electrical department signs part 3 of the form under “Other
position” to provide his/her approval).
Fill in the WO number, if relevant.
If relevant, enter the operation number given in the WO or
work description.
If relevant, enter the number of the associated isolation
document used in the operating company (e.g. isolation
certificate, valve and blinding package or similar).
Check the box for day, night shift or if the work is ongoing.
(Ongoing work means that the WP is a continuation of work
that has been carried out during the previous shift).
Date applied for, when the work will take place.
Planned time when the work will start.
Planned time when the work will be stopped.
Field for approval to extend the WP for up to 4 hours.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 46
The applicant also completes section 2 with the operational and safety preparations
that he/she recommends based on his/her knowledge of the work and the facility. In
the planning stage of the work the relevant measures under “Required” are checked.
Section 2 – A
Depressurisation
Draining/emptying
Cleaning/hydrocarbon removal
Isolation by single valve / double
block and bleed
Blinding/isolation plan
Safety tags/locks
Venting / extra ventilation
Prevent release of oil and gas in the
area
Measures against radioactive
radiation
Coordinate with other activities
Operations and safety preparations – Performed by area
technician
When depressurisation is necessary.
When the equipment needs to be drained or emptied.
When there is a need for cleaning of the equipment or
hydrocarbon removal.
When there is need for isolation by single valve or double block
and bleed.
When it is necessary to blind off the equipment from other parts
of the plant or a more extensive isolation plan is required
(isolation certificate, valve and blind package etc. in accordance
with usual practice in the operating company).
When safety tags or locking of the equipment to be worked on is
required, including driving gear.
When ventilation/airing out or extra ventilation is required.
When special precautions are required to prevent the release of
oil and gas in the area, e.g. avoid taking samples.
When measures against radioactive radiation are required
(radioactive deposits, radioactive instruments, use of isotopes).
Check the box here when there is a need for special coordination
with other activities.
Inspection of the area every ... hours When regular inspections by the area technician are required.
State the necessary inspection interval.
Other
Space for specification of other requirements.
GAS MEASUREMENTS PRIOR
Check the box for the specific type of gas measurement required
TO/DURING THE WORK
and, where relevant, the time interval between each
measurement that the area technician or other function shall
adhere to. The executing skilled worker must have a separate
portable gas detector for continual gas measurement at the
work site, and there is a separate checkbox for this in part 2B of
the form.
ISOLATION OF SAFETY SYSTEM
Check the box to specify whether the isolation of the safety
system is to be performed locally or by the CCR. Also state which
system(s) will be involved, what location on the installation will
be affected and the necessary compensating measures.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Part 2 – B
Portable gas detector no. at the work
site
Verify mechanical isolation
Electrical isolation or locks
Fire extinguisher or fire prevention
measures
Welding equipment safely located and
earthed
Continuous guard / radio
communication
Page: 47
Operational and safety preparations – Performed by
executing skilled worker
When continuous gas measurements are required. Note the
identification number for the instrument on the form. The type of
gas that shall be measured must be in accordance with that
specified in part 2A under GAS MEASUREMENTS.
When mechanical isolation shall be verified by the executing
skilled worker.
When electrical isolation or locking is required. For detailed
isolation routines, refer to the individual operating company’s
procedures. There is also a line where the tag number of the
equipment to be isolated can be stated.
When measures to prevent fire are required. The measures must
be suited to the actual work to be performed and be in
accordance with procedures/checklists.
When using electrical welding equipment.
When a safety guard is required during hot work, entry to
confined spaces, work over sea and/or it is a requirement that
the executing skilled worker must be able to be contacted via
radio.
Drains blocked or covered
When blocking or covering drains is required during hot work.
Barriers or warning signs
When barriers and/or safety signage is required at the work site.
Coordinate with CCR/area technician
When special coordination is required between the executing
skilled worker and CCR and/or area technician.
Follow requirements for work over sea During work over sea or at height there may be requirements
or work at height
relating to the emergency response should personnel fall
overboard, requirements relating to weather limitations, the use
of special personal protective equipment, etc. The measures must
be in accordance with the specific work and correspond to
applicable procedures/checklists.
Safety datasheet or action card read
When required, safety datasheets or action cards should be read
and available
and available in connection with the use of dangerous
substances.
Procedure or checklist for the
Checking this box indicates that there are procedures or
operation read and understood
checklists for the specific operation that should be read and
understood by involved personnel. There is a space to enter the
relevant procedure or checklist number.
Control of temporary lifting equipment Checking this box indicates that documentation exists which
certifies that the temporary lifting equipment is approved for use
and that the user of the equipment has the required competence
in accordance with the requirements given in relevant
regulations.
Follow requirements for entry into
Check this box to include requirements for entry into confined
confined spaces
spaces. The measures must be appropriate to the specific work
and in accordance with procedures/checklists.
Special personal protective equipment Check here when special personal protective equipment beyond
for the operation
that which is standard is required. The actual type of equipment
shall be noted on the WP form.
Measures to avoid occupational
When there is a need to prevent occupational illnesses. This may
illnesses
for example be the use of lifting equipment to avoid unnecessary
strain, remembering time limitations when working in noisy
areas, facilitating variation in the work to avoid physical wear
and tear, etc. Specific measures shall be noted in the allocated
space.
Other requirements/preparations
Space to specify other requirements and/or preparations. If a
need to implement stricter operational and safety preparations is
identified, additions may be made during any stage of the work,
including during planning, after a pre-job discussion or during
the execution of the work. Field 8 may be used if there is not
enough space in field 2B.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 48
The approver/area/operations supervisor reviews the WP application prepared by
the applicant. He/she checks that the necessary operational and safety preparations
have been specified in accordance with the above guidelines. If necessary, he/she may
enter additional measures beyond those specified by the applicant. He/she may also
delete items by drawing a line through the relevant item on the form and adding
his/her initials, so that it is clear who made the change. It is emphasised that a close
dialogue between the applicant and approver/area/operations supervisor is
necessary during the planning stage in order to ensure a mutual understanding of the
required measures.
A.3 Approval of the work permit
The approver/area/operations supervisor gives his/her approval by signing the
relevant section of the form. If the area and operational responsibility is divided
between two parties, both will sign on their respective side of the dotted line, so that
approval is granted by both parties.
WP level 2 may be approved by the approver/area/operations supervisor.
WP level 1 requires additional processing as described below.
For companies that have a work process where an electrical department is involved in
the approval of WPs, the “Other Position” field may be used by the responsible person
in the electrical department.
The HSE function checks and quality assures the WP application completed by the
applicant and the approver/area/operations supervisor. The HSE function may add
requirements or remarks to the WP through a dialogue with the applicant and the
approver/area/operations supervisor if necessary.
The overall approver/platform manager assesses the WP application against other
simultaneous activities and provides his/her approval by signing in the allocated field.
Part 3
Authorisation/approval
Approver/area/operations
supervisor
Other position
HSE function
Overall approver/platform
manager
Remarks/requirements
Explanation
Signature from approver/area/operations
supervisor
Signature from other position when relevant.
For companies that have a work process
where an electrical department is involved in
the approval of WPs, the relevant individual
shall sign here
Signature from the HSE function (signature
for quality assurance)
Signature from the overall approver/platform
manager
Space for any remarks/preconditions given
during the approval phase. These will often be
linked to simultaneous activities/other WPs in
the same area.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 49
A.4 Preparation of equipment and facility prior to starting the work
A.4.1 General
The area technician checks that the WP has been correctly completed and has the
required approval signatures, and evaluates whether the work can be started taking
into account other ongoing activities in the area. He/she performs his/her operational
and safety preparations and enters his/her initials in the relevant field in section 2A
when the measures have been completed.
When safety systems are isolated locally, the area technician signs the relevant field in
section 4A of the form. If the isolation is to take place at a later stage of the work, this
is noted as a remark.
Gas measurements and industrial hygiene measurements are performed if required.
For entry into confined spaces, the gas measurements are logged in section 4B of the
form, together with the time and individual’s initials. The relevant space in the table is
used to specify another type of gas than those specified, such as benzene.
The area technician provides his/her clearance by signing the “Work site cleared in
accordance with requirements” field. The time is also noted on the form.
The executing skilled worker carries out his/her operational and safety
preparations and enters his/her initials in the relevant field in section 2B when the
measures have been completed. If there are measures that will be executed at a later
stage in the work, such as a PA announcement, the signature expresses that the
executing skilled worker is aware of the requirement and that he/she will ensure that
it is carried out at the relevant point in time.
Prior to starting the work, the executing skilled worker enters his/her name in block
letters in the “Precautions understood and are/will be fulfilled” field.
CCR Technician
For the isolation of safety systems, the CCR technician signs section 5A of the form to
signify that the system(s) have been isolated as required. If the isolation is to take
place at a later stage of the work, this is noted as a remark.
When the work is cleared for start-up, the CCR technician signs the “The work is
cleared with CCR” field in section 5A of the form. He/she also notes the time.
If the responsibility for maintaining an overview of and clearing level 2 work is
delegated to the approver/area/operations supervisor or area technician, the CCR
does not sign/keep a copy of the WP at this stage.
A.4.2 Work permit level 2 over several days
If the prepared application covers a WP level 2 that has been approved for several
days, the signature table in part 5 of the form is used from the second time that the
work is cleared for execution.
A.5 Execution of the work
General
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 50
The executing skilled worker is now ready to start the work. He/she shall keep the
original WP available at the work site.
The area technician follows up the WP in accordance with the given requirements.
Extension
If it becomes necessary to extend the WP, the relevant field in section 1 is used. Space
has been provided to note the time at which the extension expires and for relevant
signatures.
For a WP level 2 approved for several days, the signature table is also used for the
approval of extensions.
A.6 Completion and reactivation
A.6.1 General
The executing skilled worker completes section 6B when the work has been
completed. The relevant boxes are checked to indicate whether the work site has
been cleaned and cleared (including the source separation of waste) and whether the
work has been completed. The executing skilled worker then signs the form.
The area technician specifies whether locks/tags have been removed and whether
the equipment is ready for operation in section 6A. Any locally isolated safety systems
are reactivated and a confirming signature is provided in section 4. Finally, the area
technician notes the time and signs in section 6A.
The CCR technician reactivates isolated safety systems and confirms that this has
been done by signing section 6A.
If the responsibility for maintaining an overview of and clearing level 2 work is
delegated to the approver/area/operations supervisor or area technician, the CCR
does not sign/keep a copy of the WP at this stage.
A.6.2 Level 2 work permit over several days
The signature table in section 5 of the level 2 form is used when temporarily
terminating a WP level 2 that applies for several days. Section 6 of the form is then used
when the work is finally completed.
A.7 Signing
General
The entire work team signs in this field in order to ensure that everyone is familiar
with the details of the WP – particularly those relating to the identified measures to
mitigate risk.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page: 51
APPENDIX B: WORK PERMIT (WP) FORMS
B.1 Administration of the work permit forms
It is an adopted principle that the individual operating companies shall not make
changes to the standard WP forms, however the following rules apply:
•
•
•
•
•
•
The companies shall use their own logo in the specified logo field of the
forms.
The companies may specify the use/distribution of WP copies in the
specified field. The original form shall always be kept at the work site.
Fields that are not used may be marked “not used” or be crossed out on the
printed forms or forms generated from an IT system.
Further changes shall not be made to the forms.
Forms that shall be manually filled out and completed shall be identical to
those found in the attached original PDF file.
WP forms that are completed and printed using an IT system shall be
printed with black text on white paper.
B.2 Use of the form
All companies shall use the dedicated form for WP level 1 or 2 as provided in
Appendices B3 and B4.
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
B.3 WP Level 1 form
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No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
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Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
B.4 WP level 2 form
Page 1
Page: 54
Norwegian Oil and Gas Recommended Guidelines for a Common Model for Work Permits
(WP)
No.: 088
Established: 05.11.2003
Revision no: 5
Date revised: 22.06.2015
Page 2
Page: 55