OSHA Electrical Hazards & Power Line Safety

Question 1

What is the minimum safe approach distance required by OSHA for crane operations near power lines energized at 50 kV or less?

Accepted Answer

10 feet

Answer

5 feet

Answer

15 feet

Answer

20 feet

Question 2

Before beginning crane operations near overhead power lines, what must the crane operator or employer determine first?

Accepted Answer

The voltage of the power lines

Answer

Whether the crane is insulated

Answer

The weight of the suspended load

Answer

Whether a signal person is available

Question 3

If a crane boom accidentally contacts an energized overhead power line, what should the crane operator do immediately?

Accepted Answer

Stay in the cab and call for emergency help

Answer

Exit the cab as quickly as possible

Answer

Ask ground workers to push the boom away

Answer

Lower the load to the ground and then exit

Question 4

Which OSHA standard governs crane and derrick operations in construction, including power line safety requirements?

Accepted Answer

29 CFR 1926.1400 (Subpart CC)

Answer

29 CFR 1926.502

Answer

29 CFR 1910.179

Answer

29 CFR 1926.550

Question 5

What minimum clearance distance does OSHA require when crane operations are conducted near power lines energized between 350 kV and 1,000 kV?

Accepted Answer

35 feet

Answer

10 feet

Answer

25 feet

Answer

50 feet

Question 6

Which device can be installed on a crane to warn the operator when the equipment is approaching an energized power line?

Accepted Answer

Proximity alarm (warning device)

Answer

Anti-two-block device

Answer

Load moment indicator

Answer

Rated capacity indicator

Question 7

If the voltage of nearby overhead power lines cannot be determined, what minimum clearance distance must be maintained during crane operations?

Accepted Answer

20 feet

Answer

10 feet

Answer

15 feet

Answer

25 feet