Check whether a mast-climbing work platform (MCWP) on a job complies with the current ANSI/SAIA A92.9 standard and understand how OSHA references it.

Steps

1. Confirm the current edition: ANSI/SAIA A92.9-2023 (revision of A92.9-2011) took effect March 1, 2024, and covers design, testing, installation, use, maintenance, and inspection of mast climbers.
2. Check OSHA's own posture: mast climbers are regulated under 29 CFR 1926 Subpart L (general scaffold rules — capacity, construction, access, loading, power-line clearance, fall protection, training), and Subpart L's non-mandatory appendix references the older ANSI A92.9-1993 edition, not the current one.
3. Note there is no OSHA-specific numbered standard exclusively for mast climbers — Subpart L is the operative federal regulation.
4. Purchase or otherwise obtain the actual A92.9-2023 text from the ANSI webstore for detailed engineering/inspection criteria — it is not freely available.
5. Check CPWR's (Center for Construction Research and Training) mast-climber regulatory summary page as a free secondary cross-reference, but not a substitute for the standard itself.