The platform and rigging must be proof tested at what percentage and for how long?

The platform and rigging must be proof tested at what percentage and for how long?

• A. 125%, 5 minutes
• B. 110%, 2 minutes
• C. 150%, 10 minutes
• D. 100%, 1 minute

Answer: (A)

Proof testing checks that the platform and rigging can handle more than the normal working load and still stay secure. Using 125% of the rated load for about 5 minutes gives a deliberate safety margin long enough for any hidden weaknesses to reveal themselves—through slight deformation, movement of connections, or slippage—so you can confirm the rigging and mounting will hold up under overload and dynamic conditions. The other options either don’t provide a sufficient margin, use an excessive load and duration beyond standard practice, or test at the exact working load for too short a time, which wouldn’t reliably verify the system’s strength and reliability under real use.

Proof testing checks that the platform and rigging can handle more than the normal working load and still stay secure. Using 125% of the rated load for about 5 minutes gives a deliberate safety margin long enough for any hidden weaknesses to reveal themselves—through slight deformation, movement of connections, or slippage—so you can confirm the rigging and mounting will hold up under overload and dynamic conditions. The other options either don’t provide a sufficient margin, use an excessive load and duration beyond standard practice, or test at the exact working load for too short a time, which wouldn’t reliably verify the system’s strength and reliability under real use.