The correct answers for the quiz are shown in bold:

1. Working on electrical circuits or equipment requires isolating __________ to prevent workers from getting injured from unexpected start up of equipment or stored energy that is released.

A. Plug-connected equipment

B. Electrical shock hazards

C. Sources of energy

D. Both A and C

2. Section 1926.417, Lockout and tagging of circuits, requires contractor’s workers to __________.

A. Deactivate controls

B. Energize equipment and circuits

C. Place a lock at all points of energization

D. All the above

3. Unlike the general industry’s LOTO standards, OSHA’s construction LOTO standards don’t apply ONLY to __________.

A. Servicing equipment

B. Machine maintenance

C. Both A and B

D. None of the above

4. Which activity below is an example where standard operating procedures may be a sufficient control to use in place of using LOTO procedures?

A. Pulling fuses or other circuit elements

B. Removing the battery from mobile equipment

C. Disabling plug-connected equipment

D. All the above

5. Working with electrical circuits or equipment that require using LOTO procedures includes __________.

A. HVAC system work

B. Construction equipment repairs

C. Temporary service drops

D. All the above

6. Although not discussed explicitly in OSHA’s construction standards, group LOTO situations are common with work in the industry when __________.

A. Applying OSHA’s construction LOTO standards

B. Where any number of workers have exposure to unexpected start-up

C. Multiple workers have exposure to the release of stored energy

D. All the above