Classify a suspended-seat window cleaning setup as a boatswain's chair versus a true rope descent system before applying the correct OSHA subsection
domain: boatswains-chair-vs-rds-classification · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Determine whether the worker is lowered/raised along a fixed line to reach and remain at a work position (rope descent) or is suspended in a single-point seat/chair rigged from a fixed support without progressive descent along the work face
Confirm the equipment used (seat board/chair vs. rope descent device with harness) to identify which classification applies
Apply 1910.27(b) rope descent system requirements only where the setup meets that definition; apply the applicable suspended-equipment provisions otherwise
Confirm the fall-protection configuration (independent backup line, anchorage requirements) required for whichever classification applies
Document the classification basis in the job hazard analysis
Known gotchas
Terminology in the field is inconsistent - 'boatswain's chair' is sometimes used loosely to describe true RDS setups; classify by the actual descent method and equipment, not by the informal name used on site
Applying RDS-specific anchorage certification rules to equipment that is not actually a rope descent system (or vice versa) can leave a real gap in required fall protection
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