After modification, personnel platforms are tested to what percent of their rated capacity?

After modification, personnel platforms are tested to what percent of their rated capacity?

• A. 125%
• B. 100%
• C. 110%
• D. 150%

Answer: (D)

Post-modification proof testing uses a load well above the platform’s rated capacity to verify that changes haven’t introduced weak points or altered load paths. For personnel platforms, testing to 150% of the rated capacity provides a substantial safety margin, helping ensure the structure, welds, pins, and safety devices can still handle excess loads or peak conditions without deforming or failing. This extra margin accounts for potential changes in how loads are borne after modification and gives confidence that the platform will operate safely under actual use. The other options don’t offer as much protection against unexpected stresses introduced by modifications, so they’re not sufficient in this context.

Post-modification proof testing uses a load well above the platform’s rated capacity to verify that changes haven’t introduced weak points or altered load paths. For personnel platforms, testing to 150% of the rated capacity provides a substantial safety margin, helping ensure the structure, welds, pins, and safety devices can still handle excess loads or peak conditions without deforming or failing. This extra margin accounts for potential changes in how loads are borne after modification and gives confidence that the platform will operate safely under actual use. The other options don’t offer as much protection against unexpected stresses introduced by modifications, so they’re not sufficient in this context.