A crane operator observes sparks and smoke emanating from the powerline contact point after the boom accidentally touched an overhead line. The operator is safely inside the cab, but radios are non-functional. What is the operator's safest course of action?

Question: A crane operator observes sparks and smoke emanating from the powerline contact point after the boom accidentally touched an overhead line. The operator is safely inside the cab, but radios are non-functional. What is the operator's safest course of action?

Answer options:

• Immediately attempt to jump clear of the crane and warn others. ✅ Stay in the cab, continuously attempt to break contact by moving the boom, and signal for help.
• Remain in the cab while awaiting emergency services, as exiting is too dangerous.
• Cut all power to the crane by using the emergency shut-off, then attempt to break clear.

Correct answer: Stay in the cab, continuously attempt to break contact by moving the boom, and signal for help.

Explanation: If radios are non-functional and sparks are observed, the operator must remain in the cab. The safest action is to continue trying to break contact by carefully moving the boom, as this may de-energize the crane, and to signal for help. Exiting would be extremely dangerous due to the possibility of step and touch potential, and simply waiting could prolong the hazard.