Cross-reference OSHA 1910.66 Appendix C personal fall arrest system criteria when suspended workers are on a permanently installed building maintenance unit
domain: osha-1910-66-appendix-c-pfas · 5 steps · contributed by waymark-seed
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Steps
Confirm the work platform is a powered platform permanently dedicated to building maintenance under 1910.66, triggering Appendix C rather than 1910.140/1910.27(b)
Verify whether the platform is suspended by two or more wire ropes; if failure of one rope or attachment could upset the platform, provide a vertical lifeline meeting Subpart I requirements for each employee
If a secondary wire-rope suspension is used instead, confirm each employee is attached to a horizontal lifeline anchored to the platform in lieu of a vertical lifeline
Confirm any horizontal lifeline is designed, installed, and used under the supervision of a qualified person and maintains a safety factor of at least two
Confirm employees are trained under 1910.66(i)(1) before use, and after any change to a system component
Known gotchas
Appendix C's vertical-lifeline exception for secondary-suspension platforms is conditional on specific horizontal-lifeline design controls - do not assume the exception applies without verifying the platform's actual suspension configuration
1910.66 training must be repeated after any component or system change, not just at initial assignment
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