DOT 2 (5/26/21)

Question 1

1.) What is the purpose of ST-19?

Answer 1

To enhance safe working conditions established by project O&M instruction OP-2, general operating procedures for safe clearances, hotline (non-test) orders, and special conditions and other safety documents, and to provide criteria for assessing and mitigating risk of shock and arc flash hazards during equipment used that may result in personal injury.

Question 2

2.) Is the limited approach boundary for a direct current system equivalent to 10 feet?

Answer 2

No, false

Question 3

3.) When are rubber insulated gloves inspected?

Answer 3

Gloves are inspected before first use and every six months thereafter.

Question 4

4.) What are the hazards associated with electrical work?

Answer 4

Electric shock, arc flash, and blast hazards.

Question 5

5.) What entity is responsible for generating warning signs and labels and issuing them to the field divisions to affix to equipment?

Answer 5

Electrical Engineering Services

Question 6

6.) _________ and _________ are responsible for providing PPE with an Arc Thermal Protective Value (ATPV) reading sufficient for magnitude and nature of that identified hazard within the work to be accomplished?

Answer 6

Branch Chiefs (Superintendents); Supervisors.

Question 7

7.) What is FR?

Answer 7

Flame Resistant (FR) clothing and PPE required for work in Hazard Risk Cat 1 environments.

Question 8

8.) _______ _________and their ________ shall be rated for circuits and equipment to which they will be connected?

Answer 8

Test instruments; Accessories

Question 9

9.) What boundary can be crossed by an unqualified worker while being escorted by a qualified worker?

Answer 9

Limited approach boundary

Question 10

10.) Can an unqualified person cross a restricted approach boundary?

Answer 10

False, under no circumstance can an unqualified person cross this boundary.

Question 11

11.) What kind of work is allowed on energized circuits?

Answer 11

Testing and troubleshooting can be accomplished by Qualified People

Question 12

12.) When does the NEC require a job safety brief/pre-work safety briefing?

Answer 12

A. Before the start of each workday
B. At the start of each new job
C. If the worksite conditions change
D. When personnel assigned to the job change

Question 13

13.) For an electrical safe condition to exist, do circuits need to be de-energized?

Answer 13

Yes, true

Question 14

14.) What area does not require the use of FR clothing?

Answer 14

Exclusion areas

Question 15

15.) Before using electrical gloves, what must take place?

Answer 15

Inspection and proof testing for defects must take place.

Question 16

16.) Is jewelry or metal allowed to be worn when working on or near energized equipment?

Answer 16

Jewelry and metal objects are never to be worn when working on or near this type of equipment.

Question 17

17.) At what voltage does ST-19 consider equipment to be energized?

Answer 17

At 50 volts or higher

Question 18

18.) What organization is considered to be the industry standard for electrical safety in the workplace?

Answer 18

The National Fire Protection Association (NFPA) 70E

Question 19

19.) Can an arc flash be hotter than the sun?

Answer 19

Yes, four times hotter than the surface of the sun at 35,000°F

Question 20

20.) What amount of current can cause heart fibrillation?

Answer 20

.100 A (100 mA); .200 A (200 mA)

Question 21

21. Who is allowed to test on any energized equipment?

Answer 21

Only a qualified worker will perform these tasks

Question 22

22.) What is the ATPV for CAT II?

Answer 22

8 cal/cm2

Question 23

23.) What type of gloves should be worn over rubber insulating gloves?

Answer 23

Leather protector gloves should always be worn over rubber insulating gloves to provide the mechanical protection needed against cuts, abrasion, and punctures

Question 24

24.) What class of protective gloves are required for working on 120 volt systems?

Answer 24

Class 00

Question 25

25.) Can non-arc rated face shields be used as long as they are tinted?

Answer 25

False, face shields must have the proper Arc Thermal Protective Value rating for use