NCCCO 8 50 Questions and Answers 100

NCCCO 8 | 50 Questions and Answers 100% Correct - According to OSHA, what clearance should a crane in transit keep while going under 445KV lines? - Answer 16 feet

While operating a crane near 280KV powerlines, what distance does OSHA require you to keep? - Answer 17 feet 8 inches

When working around power lines you must: - Answer Avoid stockpile

material under powerlines Maintain the correct distance according to the rated K.V.Ground the crane with the proper grounding cable

What is the proper procedure when using an insulating link or a boot near power lines? - Answer Be sure to maintain the correct allowable distance from the lines.

What is the minimum allowable distance from the crane and powerlines under 50k V? - Answer 10 ft.

When working near powerlines when is a signal person required? - Answer When crane moves within a booms length of the limit of approach.

When is it safe to work closer than the allowable distance from powerlines? - Answer When utility company says lines are de-energized

When is it safe to handle loads under power lines? - Answer The load nor any part of the crane can come closer than regulations allow.

If a crane comes in contact with power lines, it is critical that everyone be kept away from 1 / 2

the crane, the loadline and the load because: - Answer All three can become energized, including the ground around the crane, and you could be electrocuted by just getting too close to any of them.

If a crane only momentarily contacts a power line of 6,000 volts: - Answer The crane should be stopped and inspected immediately to determine the path of electricity because wire rope, seals, bearings, wiring, tires, etc. can become damaged.

The minimum clearances allowable between power lines and any part of the crane vary depending on the voltage of the lines. What are minimum clearances required by OSHA for powerlines above 50,000 volts? - Answer 10 feet plus 0.4 inch per 1,000 volts above 50,000 kv

. Electrocution is the number one cause of fatalities associated with cranes. Does the boom load line or load have to physically contact a power line for electrocution to occur? - Answer No

When working near power lines where any part of the crane or load could get closer than allowed: - Answer It is necessary to have a signalperson whose only job is to warn when the limits are being violated.

When working near power lines, tag lines and slings should be constructed of: -

Answer Polypropylene or polyethylene and webbing because they offer fair insulating properties.

Insulating links, boom point guards, proximity warning devices are typical safety devices

available to assist cranes working near power lines. They are considered: -

Answer Sometimes reliable

The load line of the crane you're operating comes into contact with an energized power line.

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