NATIONAL PRECAST CONCRETE ASSOCIATION
Control of Hazardous Energy
Lockout/Tagout
29 CFR 1910.147
Compliance Training Presentation
NPCA Safety, Health and Environmental Committee
DISCLAIMER
As a committee of a national organization, the Safety, Health &
Environmental Committee of NPCA must reference federal
standards.
However, users of this information are informed that state and local
agencies may have more stringent standards than those cited here.
It is the users responsibility to ensure that the federal standards
referenced herein are applicable in their locale.
If more stringent standards apply locally, you must adhere to those
local requirements.
PURPOSE
• The purpose of this guide is to establish requirements
and procedures to prevent the unintended release of
energy.
• This applies to electrical energy, potential energy,
gravity, hydraulics, pneumatics, etc.
• When present this energy could cause a circuit to
energize, or a machine / machine part to move or fall,
causing injury to an employee.
DEFINITIONS
• Affected Employee – An employee whose job
requires him/her to operate equipment or work in an
area where lockout / tagout is performed.
• Authorized Employee – A person who services or
performs maintenance on equipment that requires
lockout / tagout.
• Energy Isolation Device – A mechanical device that
physically prevents the transmission or release of
energy.
DEFINITIONS
• Lockout – The placement of a device, such as a keyed
lock, or other energy isolation device to prevent the
operation of the equipment until the device is removed.
• Lockout Device – A device that utilizes a positive
means such as a lock to hold an energy isolating
device in the safe position and prevent the energizing
of the machine or equipment.
DEFINITIONS
• Servicing and/or Maintenance – Workplace activities
where the employee may be exposed to the
unexpected energizing or startup of the equipment or
released hazardous energy.
• Tagout – The placement of a tag, in conjunction with a
lockout device, to indicate the owner of the lockout
device.
• Tagout Device – A prominent warning device, such as
a tag and a means of attachment, which can be
securely fastened to the energy isolating device, to
indicate that the equipment may not be operated until
the device is removed.
EXEMPTIONS
• Minor tool changes and adjustments
• Servicing or maintenance of equipment during normal
production if:
o The safeguards are effective in preventing worker
exposure to hazards that could be created.
• Work on cord and plug connected electrical equipment
if the equipment is unplugged and the authorized
employee is in control of the plug.
GENERAL REQUIREMENTS
Locks and Tags
• Make locks and tags available to all
authorized employees.
• Each authorized employee must use his
or her own lock/tag. They are to keep the
key with them while performing the work.
• Each lock must have only one key. Locks
with a master key are not permitted.
• Only the authorized user removes the lock
they installed.
GENERAL REQUIREMENTS
Written Procedures
• The energy control procedures contain the instructions
for the means to control the hazardous energy.
• Specific steps should be included.
• Pictures of disconnect equipment or shut off devices
are helpful.
• Explain how to test the machine to determine if the
lockout is effective in controlling the hazard.
GENERAL REQUIREMENTS
Procedures are not required when all of the following
exist:
o The machine has no stored or residual energy
o The machine has a single energy source
o The lockout of the single source will completely deenergize the equipment
o The machine is isolated and locked out from that
source during serving or maintenance
GENERAL REQUIREMENTS
Procedures are not required when all of the following
exist:
o The lock out device is under the exclusive control of
the authorized user
o No other hazards for employees are created
o No accidents involving the release of hazardous
energy have occurred on this machine or equipment
GENERIC PROCEDURE FOR LOTO
• Only authorized employees perform
LOTO
• All affected employees are notified of
LOTO
• Identify the powers source(s) for the
equipment
• Perform normal shutdown on the
equipment
• De-energize the power source
GENERIC PROCEDURE FOR LOTO
• Place lockout and tagout devices on
the power source
• Test the equipment for potential
energy
• Return all controls to the neutral of
off position
• Maintenance or servicing can now
be performed
REMOVAL OF LOTO
•
•
•
•
Make sure all tools are stored
Verify that the switches are in the neutral or off position
All guards must be in place
Personnel must be clear of the equipment
• Each authorized person shall remove only his or her own
lockout and/or tagout device
• Return to energy isolating device to its on position
TRAINING
Authorized Employees
• Instructed in the recognition of applicable hazardous
energy sources
• Instructed in the procedures for lockout / tagout
• Instructed in the proper procedures for deenergizing an energy control device
• Instructed in the use of the locks and tags
• Instructed in the procedures for restoring energy
TRAINING
Affected Employees
• Instructed in the purpose of lockout / tagout
• Instructed to refrain from attempting to start or reenergize any machine or equipment that is locked
out or tagged out
Other Employees
• All employees will be instructed to stay clear of
equipment or machines that are locked out or
tagged out.
TRAINING
Authorized and Affected Employees need to be
retrained when:
• There is a change in job assignment
• There is a change in machines, equipment, or
processes that present a new hazard
• There is a change in the energy control procedures
• Periodic inspections reveal that there are deviations
in the energy control procedures
• The employer believes that there are deviations
from, or inadequacies in, the employee’s knowledge
or use of the energy control procedures
TRAINING
The objective of retraining is:
o To introduce new or revised control methods and
procedures as necessary, and
o To reestablish employee proficiency.
• Initial training and retraining needs to be certified by
the employer.
• The certification needs to contain the instructor, date of
training and content of the training, as well as the
employee’s name.
MONITORING & ENFORCEMENT
• The use of the energy control procedures must be
periodically monitored.
• Management will be responsible for the implementation
and enforcement of this policy.
• Failure to follow this energy control policy will result in
disciplinary action.
• Disciplinary action may lead to employee’s termination
of employment.
MONITORING & ENFORCEMENT
Failing to enforce
these procedures
could lead to
disaster!
ANNUAL REVIEW & INSPECTION
• The hazardous control policy must be reviewed annually.
This review will include:
o An inspection of the written procedures;
o A review that the procedures are being followed.
• The management, quality and safety personnel will
ensure that this review and inspection is performed.
• A lockout / tagout inspection checklist will be used to
document this inspection
• Procedures will be updated as necessary
• Employees re-trained as necessary
ANNUAL REVIEW & INSPECTION
• The annual review and inspection will
be documented. The following shall
be recorded:
o The date of the review
o The procedure(s) or equipment being reviewed
o The employees performing the procedure if
applicable
o The name of the employee performing the
inspection
• The annual review and inspection must be performed
by an authorized employee other than the one being
reviewed.
ADDITIONAL RESOURCES
• 29 CFR 1910.147 Control of Hazardous
Energy (Lockout/Tagout)
• 29 CFR 1910.333 Selection and Use of Work
Practices
• The NPCA Safety Manual
• www.osha.gov
DISCLAIMER
This publication is designed to provide accurate and authoritative information
in regard to the subject matter covered; however, National Precast Concrete
Association acts as mediator without approving, disapproving, or
guaranteeing the validity or accuracy of any data, claim or opinion appearing
herein.
Information is provided and disseminated with the understanding that
National Precast Concrete Association is not engaged in rendering
engineering, legal, or any other professional services.
If engineering, legal, or other professional assistance is required, the
services of a competent professional should be obtained.
National Precast Concrete Association does not assume and hereby
disclaims liability to any person for any loss or damage caused by errors or
omissions in the material contained herein, regardless of whether such errors
result from negligence, accident, or any other cause whatsoever.