ST-19 Flashcards

1
Q

the purpose of ST-19 is?

A

To enhance OP-2 by mitigating electrical hazards when working on equipment

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2
Q

What are the 3 electrical hazards?

A

Arc blast, Arc flash, and shock

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3
Q

Who is responsible for generating the arc flash boundary labels?

A

Electrical Engineering Service

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4
Q

For the ATPV rating what is CAT1-4 equivalent to

A

1=2 ,2=4, 3=25, and 4=40

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5
Q

Who is responsible for providing ppe with ATPV ratings?

A

Supervisors and branch chiefs

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6
Q

FR stands for what?

A

Fire Resistant

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7
Q

Testing instruments and their accessories shall be rated for

A

The circuits they are testing …nothing rated less

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8
Q

Testing and troubleshooting are exceptions to do what.

A

work on live circuits

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9
Q

NFPA 70E requires a JHA when

A

*Before starting a new day or job
*Worksite conditions change
*If personnel assigned to job changed

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10
Q

What qualifies as energized equipment?

A

50 volts or above

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11
Q

A clearly marked area where personnel are not required to wear FR clothing.

A

an Exclusion area

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12
Q

to work on live equipment what are the requirements

A

-safe work practices are used
-a qualified worker is performing the work
-proper ppe is being worn

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13
Q

How should rubber gloves be taken care of

A

properly handled/stored, carefully inspected before use, and periodically tested

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14
Q

OSHA states what rule with rubber gloves

A

they must be replaced every 3 to 6 months

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15
Q

what shall not be worn when working on live equipment?

A

jewelry or metal

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16
Q

which glove would you use for a 480 v circuit

A

double zero or 00

17
Q

yes or no; should a leather glove be worn over your Ruber gloves.

A

yes

18
Q

What book is considered electrical standard and is updated every 3 years

A

NFPA 70E

19
Q

What current level causes fibrillation

A

100 milliamperes

20
Q

Arc flash can reach hotter than what temperatures.

A

35 thousand degrees Fahrenheit

21
Q

What is the limited barrier for 480 v breaker

A

3 feet and 6 inches

22
Q

To work on equip 50 v or higher you must?

A

de-energize