Introduction to Utility Connections
CIBSE East Midlands – February 2016
1
Introduction to
Utility
Connections
• Considerations
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Timing
Service Design
Planning (GT Process)
Meter Selection
Installation Pipework
Completion / Commissioning
Energy Assets PLC
Summary
2
New Building Requiring Gas –
Football Stadium
Outlet pipe
Meter
Inlet pipe
Meter outlet valve
ECV
3
Disconnection of Supply –
Football Stadium
Outlet pipe
Meter
Inlet pipe
Meter outlet valve
ECV
4
Upgrade – Factory Extension
Extension
Existing Factory
Medium
Pressure
Service
Medium
Pressure
Main
•
A Governor Unit reduces the
pressure from pressure regime to
another; in this case from up to 2bar
down to up to 75mbar.
•
They can be a separate item – such
as this one – or can be as part of the
meter installations.
•
Separate Governor units are normally
owned by the Gas Transporter
MP / LP
Network
District
Governor
Low
Pressure
Main
FM176 Point:
The FM176 provides
the pressure tier that
is available in the
Parent Main.
Only used to
establish the pressure
tier within a main for
quotation purposes.
Not accepted with
GT2 submissions
GT1 Point:
The GT1
provides the
pressure and
capacity
available at
the ECV
Meter in
External
Kiosk
Medium
Pressure
Service
Medium
Pressure
Main
Service Design
In order to design a new service or capacity
change, the designer must obtain minimum
information:
From the Customer:
•
Site and customer details
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The required load
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The required metering pressure
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Where the meter is to be located
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How the meter is to be housed
From the Network:
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The source pressure of the parent main or the
existing service
•
This can be obtained in the form of the GT1 or the
FM176
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The capacity of the parent main
•
This can be obtained by the FM137 or from the GT
specific documentation called NP/14
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NP/14 allows for designers to produce basic and
accurate service designs from standard parameters
without having to apply to the Network in advance
GT/1 - Overview
GT1 is the Management
procedure for requesting gas
service pipe pressure
& capacity information from Gas
Transporters
The latest version of this was
produced and agreed by the
Gas Transporters in April 2013
ENA /GDN/PM/GT/1 states:
• The Gas Safety (Management) Regulations 1996, Regulation 6(8)
places a duty on a person conveying gas in a Network to “where he
is requested to do so by a person proposing to carry out work in
relation to a gas fitting, provide him with information about the
operating pressures of the gas at the outlet of a service pipe”
• Whilst this regulation is applicable to persons undertaking work
downstream of the emergency control valve (ECV), which
terminates the end of a gas supply pipe, for example when
intending to install a gas supply meter installation, there are other
categories of work such as work on service pipes when the
provision of information about the operating pressure of gas is also
important
GT/1 – When required
The GT1 applications
can be used to:
GT1 would be completed
for the following:
• Check if the service
is Live or Dead?
• Meter capacity increase
• Check the service capacity?
• Available service pressures
• New meter installation that needs a site specific GT/2
• New meter installation (covered by a generic GT/2) where the
service pressure/capacity have NOT been reliably determined by
other means (Possibly at time of installation)
• New meter installation where customer unsure if service pipe is
Live or Dead.
• Meter downgrade that needs a site specific GT/2
• Meter relocation that needs a site specific GT/2
• Like for Like exchange that needs a site specific GT/2
GT/1 - Timescales
Timescales for GT1
• On receipt of the Fully
completed GT1
documentation then the
Network operators
• Endeavour to return in the
following timescales:-
GT1 request
Timescale
Pressure tier only no site visit
D + 5 working days
Pressure tier only site visit required
D + 8 working days
Pressure and capacity request
D + 10 working days
GT/1
Should the site require an outlet pressure greater
than the Design Minimum Pressure of the network
(gained from the GT1)
•
An Ancillary Pressure Agreement (APA) must
be negotiated between the Gas Shipper and
the GT
•
The site will be required to follow the GT/2
process
GT/2 - Introduction
Where a meter installation is or is intended to
be connected to a network operated by a GT,
‘Authorisation’ applies to any activity associated with the:• Setting & sealing meter regulators (Section 3)
• Setting & sealing any associated pressure control
protection devices (Section 3)
• Installing a meter by-pass. (Section 4)
“The Gas Safety (Management)
Regulations 1996 place a duty on a GT to
ensure that gas is at a suitable pressure
to ensure the safe operation of any
appliance that a consumer could
reasonably expect to operate”
GT/2 - Overview
• The current version of ENA
/GDN/PM/GT/2 was
introduced in April 2013 and
revised in January 2014.
Downstream of the ECV outside of the direct control of the
GT (Managed by Meter Asset Manager and Consumer)
• This is the governing process
that ensures that all the parts
of the gas supply network
outside of the direct control of
the network will work and
operate safely
Pre ECV in direct
Control of the GT
Service
Meter
Outlet
Appliance
GT/2 Set & Seal Timescales
GT2 Type
Process
Timescale
C4A
OAMI signoff
D + 5 working days
Total Time
10 working
days
C4A
Network Approval /
Rejection
D + 5 working days
C4B
OAMI signoff
D + 5 working days
C4B warrant
Customer sign off
Customer
dependant
C4B and
warrant
Network Approval /
Rejection
D + 5 working days
Minimum
10 working
days
GT/2 – Meter by-pass
“meter by-passes shall only be provided
where the Gas Supplier has deemed it
necessary in order to avoid the risk of
personal injury (including animal welfare),
death or damage to property arising from a
fault on the meter or the metering
equipment”
A by-pass should only be considered for the
following types of premises:
• Hospitals or hospice.
• Institutionalised accommodation (e.g. homes for the
elderly, schools, and prisons).
• Large or complex plant supporting continuous
processes (e.g. agricultural, baking processes)
• And at meter installations connected to:
Note:
The Network
also have to
approve the bypass
application as well
as the Gas
supplier, should
one refuse then the
application would
be declined
• Exceptionally complex pipe work and gas consuming
plant.
• Multi-occupied premises (e.g. a single meter
installation serving a block of flats)
Meter
Selection
Guidance
Meter Selection Guidance
Common Meter Types
1.
Positive Displacement Meters
–
Diaphragm meters
–
Rotary (RPD) meters
•
Both work by a chamber filling with a set quantity of gas. The expulsion of the gas turns
the dials.
2.
Volumetric Meters
–
Turbines
•
Measure the unrestricted flow of gas through the meter. The flow of gas turns the dials
Other types of meters, such as Ultrasonic, do exist and can be selected depending on load,
pressure and application
Meter Selection Guidance
Selection of the meter depends on a few key factors
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Maximum hourly load
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Type of load
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Gas compression (i.e boosters, etc)
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Can the meter record the minimum and maximum loads
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Inlet and outlet pressure
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Available space
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Security of supply
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Installation Pipework - Overview
•
Pipework downstream of the meter connecting the appliances
• These can be categorised as :-
– Underground pipework (MDPE and Steel)
– Above ground pipework (Welded Steel)
– Pressure reduction and gas boosting
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Underground Pipework
•
Typically most meter installations are located on the boundary, in order to connect meter to building /
appliances pipework is generally run underground and may be constructed from either polyethylene
(MDPE / HDPE) or welded steel depending upon the pressure requirements, ground conditions, and
site requirements.
All installation pipework must be :-
•
Designed by competent persons in accordance with the appropriate standard
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Constructed to an appropriate standard (IGEM/UP/2 Edition 3)
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Installed by competent operatives and accredited organisations
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Tested and commissioned to an appropriate standard (IGEM/UP/1 Edition 2)
Recognition by the end user / operator that the completed installation must be maintained and
inspected in compliance with mandatory legislation (GSIUR and DESEAR).
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MDPE to Steel Transition
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MDPE
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Above Ground Pipework
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Where the pipework runs above ground or enters the building this must be constructed using a suitable
material examples of which are steel, stainless steel or other forms of metallic pipework such as
copper.
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The design of these types of installations need to integrate with the building structure
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Meet all legislative requirements
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Be designed, constructed and installed by competent persons and organisations
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Be tested, commissioned (and documented) in accordance with industrial standards
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Safely operated in accordance with current Health and Safety legislation.
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Steel Pipework
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Steel Pipework
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Pressure Reduction & Gas Boosting
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Constraints of the local gas networks may determine the need for either increased pressure or
decreased pressure at the appliances, this can be overcome by :-
•
Where the meter is supplied from MP network, it may be prudent to design the installation pipework
downstream of the meter to operate at an elevated pressure (>21 mbar). The benefits of this can
include reduced pipe diameter in congested site applications. If the appliance then requires a lower
pressure to operate local pressure reduction facilities can be installed to ensure the appliance can
safely operate, examples of this are pressure regulators, over pressure cut off devices, and safety shut
off valves.
•
Where the pressure source is from an LP network, and a higher pressure is required at the appliance,
this can be achieved by utilising a gas booster or compressor
•
Both of these need to :-
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Be designed, constructed and installed by competent persons and organisations
•
Be tested, commissioned (and documented) in accordance with industrial standards
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Safely operated in accordance with current Health and Safety legislation.
•
Meet all legislative and GT requirements
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PRS
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Gas Booster
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Siteworks Timescales
Meter only
Service & Meter
Quotes
Quotes
Standard jobs
2 days
Standard jobs
3-5 days
Non standard
10 days
Upgrades
25 days
Non standard
25 days
Delivery
Delivery
Standard jobs
2-5 days
Standard jobs
25-30 days
Upgrades
2-5 days
Upgrades
25-30 days
Non standard
4-6 weeks
Non standard
30-40 days
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Business Overview
Largest and fast growing independent MAM and AMR provider operating in I&C
gas supply sector
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Founded in 2005
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Acquired by Macquarie Bank in 2009
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Listed on London Stock Exchange in 2012
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Asset portfolio of c.415k assets owned and managed
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Acquisition Of Bglobal Metering in 2014
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a leading provider of MOP DC/DA services to I&C electricity supply sector
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SAGas acquisition further extends service offering to include downstream
installations
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Blyth Utilities acquisition provides direct access to the residential market with
direct labour as well as commercial connections, for gas, electricity and water.
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Based in Livingston Scotland with operational hubs in Sheffield and Blidworth
with the electricity services centre in Darwen Lancashire
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Approximately 280 employees including 80 direct labour
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Our Business
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What Siteworks Do We Do ?
• Gas and Electricity
• New service connection
• Service alteration
• Meter installation
• Meter relocation
• Meter removal
• Supply disconnection
• Meter housing maintenance
• Technical consultation
• Works upstream and downstream of the meter
• Complex solutions such as boosters, governors, compressors.
• Compliance Surveys
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A Fully Integrated Offer
• Infrastructure projects for mains and service pipes (siteworks)
• Metering
• Multi Utility AMR
• Data management and analytics
• Downstream network design and installation
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Siteworks – what we offer
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Commercial and technical evaluation
Network liaison
99.3% RFT design approval level
Site survey
• Network of regional contractors
• 4-6 week average delivery
• Field based engineers
Design
Metering
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•
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Direct Labour
Meter Asset Management
Out of hours emergency response
Supplier interaction
Nationwide Stores
Embedded smart metering product
Project
Management
Outlet
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Direct labour
Complex engineering solutions
Welding/fabrication shop
Site compliance audits
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Our USP’s
• Quick quote turnaround
• End to end process
• Tailored solution around customers
specific requirements
• Bespoke meter module design and in house
construction, installation and commissioning
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One stop shop for gas and
electricity connections
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Reduced completion timescales
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Industry approved expertise
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Mitigation of risk
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Competitive pricing
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Compliance in Health & Safety
and regulation
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Licence to Operate/Accreditations
• MAMCoP
Ofgem registered MAM
• GIRS
Siteworks design and
project management
• ASPCoP
ESTA registered AMR provider
• ISO9001: 2008
Quality management system
• ISO14001
Enviromental management standard
• OHSAS18001
Health & Safety management system
• ATEX
intrinsic safety of EAL AMR unit
• Gas Safe Register
engineering competence of DLO
operatives
• OAMI
Ofgem Approved Meter Installer
• ELEXON
Ofgem approved supplier
• MOCOPA
Registered Meter Operator
Energy Assets
can proudly state
that we currently
have zero major
non-conformities
across the above
11 LTO’s and
accreditations
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Key Points
of Contact
(help and support)
Design Team
[email protected]
01506 405 499
All general enquiries
Richard Collinson
[email protected]
07837 231991
Design Manager
Guy Simmons
[email protected]
07823 886818
Development Director
Richard Atkinson
[email protected]
07823 886818
Group Sales Director
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Pirbright Institute Project – Video Clip
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Concluding
Remarks