NCCCO Signals and Communication Standards 2

Question 1

According to ASME B30.5, which signal must be obeyed by the crane operator regardless of who gives it?

Accepted Answer

The 'stop' signal, which must be obeyed immediately by the crane operator no matter who gives it

Answer

The 'hoist' signal, since raising loads is the primary crane function

Answer

Only signals given by the designated signal person are required to be obeyed

Answer

The 'lower' signal, to prevent dropped loads in emergency situations

Question 2

What is the hand signal for 'boom up' in the standard ASME B30.5 signal system?

Accepted Answer

Arm extended with thumb pointing up, index finger pointing skyward

Answer

Thumb pointing down, finger pointing up with circular motion of the forearm

Answer

Arm extended horizontally, forefinger pointing up, arm moving in horizontal circles

Answer

Both arms raised above head with palms facing outward

Question 3

When radio communication is used between a signal person and a crane operator, what must occur before a new signal person takes over communication?

Accepted Answer

The new signal person must be identified to the operator and the operator must acknowledge the change before taking signals from the new person

Answer

The crane must be shut down and the operator must exit the cab during signal person changeovers

Answer

Signal person changes require OSHA notification and documentation in the lift log

Answer

The new signal person must demonstrate at least two hand signals correctly before using radio communication

Question 4

What qualification must a person have to serve as a signal person for crane operations under OSHA 29 CFR 1926 Subpart CC?

Accepted Answer

Signal persons must be qualified by passing a written or practical test administered by a qualified evaluator, or be evaluated by a qualified assessor

Answer

Signal persons must hold a valid crane operator certification from NCCCO or an equivalent body

Answer

Signal persons only need to complete a 4-hour on-the-job training course with their immediate supervisor

Answer

OSHA does not specify qualification requirements for signal persons, leaving it to employer discretion

Question 5

When a crane operator loses visual contact with the signal person during a lift, what action must the operator take?

Accepted Answer

Stop all crane movement immediately and do not resume until communication is reestablished with the signal person

Answer

Continue the lift at a reduced speed while searching for a new visual position

Answer

Lower the load to the ground slowly to prevent a dropped load condition

Answer

Switch to radio communication automatically when visual contact is lost

Question 6

What is the hand signal for 'use main hoist' in the ASME B30.5 standard signal system?

Accepted Answer

Tap the top of the head with the fist, then give any motion signal

Answer

Rapidly open and close the fingers and thumbs while pointing at the hoist drum

Answer

Wave the flag in a vertical motion above the head three times

Answer

Cross both wrists above the head and tap the opposite shoulder