NEBOSH Work Equipment Safety 4

Question 1

What does PUWER 1998 Regulation 11 require regarding dangerous parts of machinery?

Accepted Answer

Effective measures must be taken to prevent contact with dangerous parts, following a hierarchy of guarding measures

Answer

Regulation 11 requires employers to take effective measures to prevent access to dangerous parts of machinery. The hierarchy is: (1) fixed enclosing guards, (2) other guards or protection devices, (3) jigs/holders/push-sticks, (4) information/instruction/training/supervision. Higher-level measures must be used where practicable.

Question 2

Under LOLER 1998, what is meant by 'lifting operations' that the regulations apply to?

Accepted Answer

Any operation involving the lifting or lowering of a load, including suspending a load using work equipment

Answer

LOLER 1998 defines a lifting operation broadly as any operation concerned with the lifting or lowering of a load. This includes operations using cranes, hoists, forklift trucks, vehicle tail lifts, patient hoists in healthcare, and any other work equipment used to lift or lower loads.

Question 3

What colour coding is used on an emergency stop control on machinery under PUWER 1998?

Accepted Answer

Red button/actuator on yellow background

Answer

PUWER Regulation 16 and BS EN ISO 13850 specify that emergency stop controls must use a red actuator (button, mushroom head, or pull-cord) on a yellow background. This internationally recognised colour combination ensures rapid identification in an emergency situation.

Question 4

A chain sling shows signs of wear with links stretched by more than 5% of their original length. What action should be taken?

Accepted Answer

Immediately withdraw it from service and quarantine it for disposal or repair

Answer

A chain sling with links stretched by more than 5% has exceeded its rejection criteria under BS 7121 and manufacturer guidance. It must be immediately taken out of service, clearly tagged as defective, and quarantined to prevent inadvertent use. Continued use risks catastrophic failure under load.

Question 5

What type of interlocking device ensures the guard cannot be opened until a dangerous machine part has completely stopped?

Accepted Answer

A guard locking device (interlocking with guard locking)

Answer

A guard locking device (also called interlocking with guard locking) keeps the guard physically locked closed until the dangerous condition (such as a rotating spindle) has ceased. This is essential on machines where dangerous parts take time to run down after power is removed, preventing premature guard opening.

NEBOSH IGC Practice Test

NEBOSH IGC Practice Test

NEBOSH Work Equipment Safety 4