Control of Hazardous Energy
(Lockout/Tagout) 29 CFR 1910.147
What Is Lockout/Tagout?
 Referred to as LOTO
 Blocks flow of energy from power source
to the equipment
 Provides means of warning (tag)
Regulatory Requirements
 29 CFR 1910.147–Control of Hazardous Energy
 Covers operators and service personnel
 Requires training of employees
Types of Lockout Devices
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Locks
Blocks
Chains
Multilock hasps
Wheel valve covers
Ball valve covers
Requirements For
Lockout/Tagout Devices
They must be:
 Durable
 Standardized
 Substantial
 Identifiable
Energy Sources
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Electricity
Hydraulic
Pneumatic
Steam
Thermal
Chemical
Gravity
Typical Equipment
Requiring LOTO
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Presses
Saws
Conveyors
Pumps
Production
Equipment
 Trash
Compactors
 Ovens
When Must LOTO Be Used?
When servicing or maintaining equipment where:
 Hazardous energy exists
 Unexpected start-up could occur
 Either of these could harm an employee
LOTO Shall Be Used When:
 Employees are required to remove or
bypass a safety device
 Employees are required to place any part
of their body in harm’s way
 Employees are exposed to hazardous
energy
LOTO Exceptions
 Work where hazardous energy does
not exist
 Activities performed during routine
production processes
 Work on cord-controlled devices
 Hot tap operations where shutdown
is not feasible
Typical LOTO Procedures
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Performing a shutdown
Isolating equipment
Applying and removing lockout devices
Safely releasing stored energy
Affected Employees
Employees who
 Operate
 Work around
 Occasionally adjust equipment that is
subject to LOTO
Authorized Employee
 Maintains equipment
 Services equipment
 Is trained to use LOTO
Company Responsibilities
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Ensure de-energization of equipment
Ensure employee awareness
Provide appropriate levels of training
Review program effectiveness
Maintain and revise program
Administer appropriate disciplinary actions
Maintenance Responsibilities
 Lockout/Tagout prior
to service or repair
 Remove or cut locks
off isolation devices
 Ensure proper training
of authorized employees
Affected Employee
Responsibilities
 Notify maintenance, etc., when equipment
needs repair or adjustment
 Leave all LOTO devices in place
 Verify equipment is safe to operate
following LOTO
 Follow all safety rules while operating the
equipment
Authorized Employee
Responsibilities
 Repair or service equipment as needed
 Ensure that all energy sources are locked
out
 Test equipment to verify residual energy is
dissipated
 Place a “Danger—Do Not Operate” tag on
equipment
Authorized Employee
Responsibilities (cont.)
 Obtain assistance
when necessary
 Remove locks and/or
tags following LOTO
 Coordinate
multi-shift repair
Training Requirements
 Authorized employees—initially and at
least annually
 Affected employees—at least initially
 Authorized and affected—whenever
changes are made to jobs or procedures
 Authorized and affected—when program
deficiencies are noted
How to Perform LOTO Safely
 Follow company safety procedures for LOTO
 Refer to procedures on how to lockout specific
equipment
 Keep everyone informed when equipment is
repaired or serviced
 Stay alert
 Use common sense
Quiz
1. The LOTO standard is designed to block the
flow of energy to a piece of equipment. True or False
2. Types of LOTO devices include _______, _______,
and _______.
3. It is not required that a company have written
procedures for proper lockout/tagout.
True or False
4. An authorized employee is one who _________ or
_________ the equipment.
5. If a safety device is removed from a piece of
equipment, LOTO is not required.
True or False
Quiz (cont.)
6. Typical energy sources found on equipment include:
_______, _______, and _______.
7. Affected employees are those who operate or work
around a piece of equipment.
True or False
8. As long as an employee has had training on LOTO,
the employer or company has no additional
responsibilities under 1910.147.
True or False
9. Training for authorized employees must be conducted
_________ and at least _________.
10. Locks should always stay on the equipment during a
shift change.
True or False
Quiz Answers
1. True. It should block the flow of energy and provide
a means of warning.
2. Types of LOTO devices include locks, blocks, chains,
hasps, wheel valve covers and ball valve covers.
3. False. If lockout is required, a company must have a
written program and procedures.
4. An authorized employee is one who services or
maintains the equipment.
5. False. LOTO is required when a safety device is
removed, an employee is in harms way or when
employees are exposed to hazardous energy.
Quiz Answers (cont.)
6. Typical energy sources include: electricity, hydraulics,
pneumatics, steam, thermal, chemical and gravity.
7. True. Affected employees are those who operate or work
around the equipment.
8. False. Training is just one of the responsibilities of a
company.
9. Training for authorized employees must be conducted
initially and at least annually.
10. False. Locks should be removed during shift change and
the shift coming on duty should place their locks on the
equipment.