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bakersfield > ST_19 > Flashcards

ST_19 Flashcards

1
Q

What is the purpose of ST_19?

A

To enhance safe working conditions and to provide criteria for mitigating the risk of shock and arc flash hazards during equipment use that may result in personal injury

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2
Q

What are the three electrical hazards?

A

Shock, arc flash, arc blast

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3
Q

Who is responsible for generating arc flash warning labels to attached equipment?

A

Electrical engineering services

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4
Q

Who is responsible for determining and providing PPE with ATPV?

A

Supervisor

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5
Q

Are you allowed to use any random face guard or PPE?

A

No, must be arc rated

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6
Q

What does FR stand for?

A

Flame resistant

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7
Q

Testing instruments and their accessories should be what before using?

A

Should be rated for circuits and equipment

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8
Q

What are the rules for an unqualified worker in a limited boundary?

A

Not allowed to enter unless a qualified person advise them of hazards

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9
Q

What are the rules for an unqualified worker in a restricted boundary?

A

Can’t cross the boundary at all

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10
Q

What is the approach boundary for a fix conductor at 480 V?

A

3ft 6in

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11
Q

What is the category two rating on PPE for ATPV?

A

8 cal/cm^2

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12
Q

What are the two situations you are allowed to work on an energized circuit?

A

Testing and troubleshooting

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13
Q

An electrical JHA, NFPA 70 E, should be held at the following times:

A

Before the start of each workday and new job, if worksite conditions change, if the personnel assign to the job change

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14
Q

What is an exclusion area?

A

Clearly marked area where personnel are not required to wear FR clothing

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15
Q

What is the volts limit for something to be energized?

A

50 volts

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16
Q

In order to work on a circuit 50 V or greater it must be ____?

A

Deenergized

17
Q

When should working on energized equipment be permitted?

A

When appropriate safe work practices are used, work is performed by qualified workers, and proper PPE is worn as required

18
Q

How should gloves and equipment be taken care of?

A

Properly handled and stored, carefully inspected before use, and periodically proof tested

19
Q

How often does OSHA require a glove to be tested?

A

Every six months

20
Q

Is jewelry allowed to be worn when working with energized equipment?

A

No

21
Q

What class of gloves are used for 480V?

A

00 gloves

22
Q

What is required to be worn over rubber gloves

A

Leather protectors

23
Q

What is considered the industrial standard and is periodically updated about every three years?

A

NFPA 70 E

24
Q

What current level causes fibrillation?

A

100 mA

25
Q

Arc flash can reach temperatures that are___?

A

4x hotter than the sun

26
Q

Who is authorized to work on circuits?

A

Qualified workers

bakersfield (3 decks)

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