When should all controls of the crane be tested by the operator?

The correct answer emphasizes the critical importance of testing all controls of the crane at the start of a new shift. Conducting this check ensures that the equipment is functioning properly and safely for the operator and everyone on the worksite. This practice allows the operator to verify that all systems are operational and that there are no malfunctions or issues that were not addressed in prior operations.

Testing the controls at the beginning of the shift acts as a foundational safety measure, helping to identify any potential problems before the crane is put into active use. This safeguard is crucial in ensuring that the equipment is ready for the day's tasks, thereby minimizing risks and ensuring compliance with safety regulations.

While checking the controls before any operation, after each use, or at the end of the day are generally good practices, they do not provide the same level of comprehensive readiness as testing them at the start of a new shift. Addressing this task at the beginning of each shift allows for a systematic approach to safety, ensuring that any issues can be resolved before operations commence.