SC Pressure And Process Piping Practice Questions - South Carolina Pressure And Process Piping Contractor Examination Exam

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Per OSHA 1926.652, when must a trench have a protective system (sloping, benching, shoring, or a shield) unless it is entirely in stable rock?

Only when the trench is deeper than 20 ft At 5 ft of depth or greater, unless a competent person finds no cave-in potential in a shallower cut Never on a process-piping job Only if employees will sleep in the trench

Correct Answer:

At 5 ft of depth or greater, unless a competent person finds no cave-in potential in a shallower cut

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