1. technology and computing
2. consumer electronics
3. tv and video equipment

083: Testing – Pre-Operational
and Startup
Facilitator duties for this
session:
Review pre-op testing
procedures, startup
procedures, or a key vendor’s
installation manual. Be
prepared to ask and answer
questions.
What this Safety Talk
covers:
The procedures to follow for
safely energising equipment for
the first time.
Reference Material:
For further information refer to:
ƒ
Relevant State Legislation
ƒ
Company Policy Statement
ƒ
Company Work Method
Statement
ƒ
Employee Guide to Safety
Safety checklist
Review the installation manual and verify that all steps have been completed and
checked. For example, are the proper protective earths in place?
Have you removed any shunts or straps used for shipping? Are the required
safety switches installed?
Visually check all terminations to verify they have been properly torqued and
marked. Loose connections may arc when the circuit is energised.
An arc can cause personal injury on its own, but may also serve as an ignition
source in a hazardous location for ignitables present in a non-hazardous location.
Verify that the equipment is clean and free of construction debris. Dirt, metal
shavings and other foreign materials can provide an electrical path for phase-tophase and phase-to-earth faults.
Account for all tools. If tools are missing, find them before energising the
equipment. In one case, for example, a spanner that was apparently left in a
switchboard caused millions of dollars in lost revenue and thousands of dollars in
damaged equipment when the switchboard exploded when it was energised.
During the forensic investigation, the electrician who worked on the equipment
was not able to produce one of his spanners.
Verify all safety barriers, shields, covers and doors are in place and properly
secured. Remember, a panel cover may be the only thing between you and a
fireball of vaporised copper and insulation.
Verify all switches, disconnects, circuit breakers, and other safety devices are
operating properly and are in their proper position for startup.
Check the electrical and mechanical system to verify it is clear. Provide safety
signs, lockouts, barriers and other safety equipment as required.
Do not energise any equipment until you have personally verified the system is
clear. Ensure no one can be injured if the equipment starts up.
Before energising any equipment, put on your PPE as required for your
application. The required PPE will range from safety glasses to a full flash suit.
The determining factor is not whether you are doing the work.
If you are in a place where a danger is present, you must wear the PPE that
guards you against that danger. An arc blast, for example, does not differentiate
between who was testing and who was merely in the room.
If you are not directly involved in energising equipment, leave the area during
energisation. For example, suppose your crew is closing breakers for start-up.
One person should close the breakers while another watches the panel meters or
other indicators. Everyone else should stay back.
Ask all persons not involved in the start-up process to leave the area while
energising the equipment.
Review and Discussion
Is the purpose of the
installation manual to be a
reference when all else fails? If
so, why? If not, why not?
Remember that working on energised equipment needs to be at least a twoperson job.
When energising for the first time, place as much distance between the
equipment and yourself as possible.
What may occur if there is a
loose power connection?
For example, if you are energising a transformer that has a local primary
disconnect switch mounted adjacent to the transformer and the primary circuit
breaker is at a switchboard some distance away, close the local switch first and
then close the circuit breaker.
Why must construction debris
be removed?
When operating a breaker, stand to one side of it so you are out of the arc blast
path.
What could happen if debris is
left in the equipment?
If electrical measurements and adjustments are required after startup, always
wear the appropriate PPE and use the necessary shields or other safety
equipment to reduce hazards.
Besides preventing the loss of
expensive tools, what is the
reason for inventorying all of
your tools before energising
any equipment?
Why should all of the safety
shields, barriers, guards and
other devices be in place
before energising any
equipment?
If the equipment is to remain energised after startup, provide warning signs as
required to indicate energised equipment and possible dangers.
Included with the signs should be an emergency contact should something be
amiss.
Notes:
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Why is it important to check the
electrical and mechanical
system before energising any
piece of equipment?
__________________________________________________________________________
What is the minimum number
of persons required to energise
new equipment?
__________________________________________________________________________
Who should be present when
energising new equipment, and
why?
Where should you try to place
yourself in relation to a piece of
electrical equipment when
energising it?
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© 2005 National Electrical and Communications Association. All rights reserved
083: Testing – Pre-Operational
and Startup
Review and Assessment
Participant Name:_____________________________________________
Please circle the correct answer to the following questions.
Visually check all terminations to verify they have been
properly torqued and marked.
True
False
Loose connections may arc when the circuit is energised.
True
False
Account for all tools. If tools are missing, find them before
energising the equipment.
True
False
Do not verify all safety barriers, shields, covers and doors are
in place and properly secured.
True
False
Verify all switches, disconnects, circuit breakers, and other
safety devices are operating properly and are in their
proper position for startup.
True
False
Ask all persons not involved in the start-up process to leave
the area while energising the equipment.
True
False
Working on energised equipment does not need to be at
least a two-person job.
True
False
If electrical measurements and adjustments are required after
True
startup, always wear the appropriate PPE and use the necessary
shields or other safety equipment to reduce hazards.
False
Check the electrical and mechanical system to verify it is clear. True
Provide safety signs, lockouts, barriers and other safety
equipment as required.
False
When operating a breaker, stand to one side of it so you
are out of the arc blast path.
False
True
Participants Signature:__________________________ Date:__________
© 2005 National Electrical and Communications Association. All rights reserved
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083: Testing – Pre-Operational and Startup
Date: _________________
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Time Commenced: __________________ Time Completed: _______________________
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2.
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3.
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