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27. Construction & Fall Safety

Learning objectives

  • State OSHA’s fall-protection triggers for solar work and the compliant methods.
  • Distinguish construction vs general-industry rules and OSHA 10 vs 30.
  • Apply ladder, PPE, and jobsite-hazard practices.

27.1 Falls are the number-one killer

Falls are the leading cause of death in construction, and solar puts crews on roofs, ladders, and edges constantly. This is the hazard most likely to kill an installer, so it leads the part.

27.2 OSHA’s fall-protection triggers

OSHA treats installation as construction and maintenance as general industry, with different triggers:

  • Construction (installing PV): 6 feet. Under 29 CFR 1926 Subpart M (1926.501), any worker on a surface with an unprotected edge 6 ft or more above a lower level must be protected.
  • General industry (servicing PV): 4 feet under the 1910 standards. Compliant methods are guardrail systems, safety net systems, or personal fall arrest systems (PFAS) (a rated anchor, full-body harness, and lanyard/self-retracting lifeline), all meeting 1926.502 criteria.

OSHA publishes solar-specific guidance on this: as panels fill a roof, the safe walking area shrinks, forcing crews near edges and skylights/roof hatches. Those openings must be guarded or treated as fall hazards requiring PFAS. Ladders fall under Subpart X, scaffolds under Subpart L.

27.3 OSHA 10 vs OSHA 30

NABCEP PVIP (PV Installation Professional): the North American Board of Certified Energy Practitioners' journeyman-level certification for solar PV installers. OSHA 10 is a required input credential.
NABCEP ESIP (Energy Storage Installation Professional): the NABCEP certification for battery and energy storage system installers. OSHA 30 is a required input credential.
  • OSHA 10 (Construction): entry-level hazard awareness; the practical floor for field workers and a NABCEP PVIP input (Ch 22 of the companion curriculum; Ch 44 here).
  • OSHA 30: deeper supervisory-level training for leads/foremen, and the requirement for NABCEP ESIP (energy storage). ⚠️ Doing OSHA 30 once covers both the PVIP and ESIP requirements.

27.4 Ladders, PPE, and the daily hazard analysis

Beyond fall arrest, every job requires: secure, correctly angled extension ladders extending above the roofline with three-point contact; hard hats, eye protection, gloves, and proper footwear; heat-illness prevention on hot roofs; and safe material handling. Start each job with a job hazard analysis (JHA) to identify that site’s specific risks. ⚠️ Site conditions change daily. The JHA is not a formality.

27.5 Daily job hazard analysis (JHA): a field checklist

 BEFORE work each day / each site:
 ☐ Fall hazards: roof edges, skylights, hatches identified & guarded/PFAS rigged
 ☐ Anchor points rated & installed; harnesses inspected; lanyards/SRLs correct length
 ☐ Ladders: secured, correct angle, extend ≥3 ft above roofline, 3-point contact
 ☐ Weather: wind, heat-illness risk, wet/icy surfaces, lightning
 ☐ Electrical: array treated as LIVE; PPE staged (Ch 28)
 ☐ Materials: safe staging, lifting plan, drop zones below cleared
 ☐ Crew briefed; emergency plan & first-aid location known

Chapter 27 summary

Falls kill more than anything else. Installing PV triggers fall protection at 6 ft (construction, Subpart M); servicing at 4 ft. Use guardrails, nets, or PFAS per 1926.502, guard skylights, and follow ladder/scaffold rules. Get OSHA 10 minimum (OSHA 30 for leads and ESIP). Run a JHA every day.

  • PFAS (Personal Fall Arrest System): a rated anchor, full-body harness, and lanyard or self-retracting lifeline that catches a falling worker before they hit a lower level.
  • 1926.501 (Subpart M): the OSHA construction standard requiring fall protection at 6 ft above a lower level.
  • JHA (Job Hazard Analysis): a pre-work review of site-specific hazards conducted at the start of each day or each new site.
  • OSHA 10: entry-level construction safety training; the field minimum for PV installers and a NABCEP PVIP credential input.
  • OSHA 30: supervisory-level construction safety training; required for leads/foremen and for NABCEP ESIP certification.
  • NABCEP PVIP: the NABCEP journeyman certification for PV installation professionals.
  • NABCEP ESIP: the NABCEP certification for energy storage installation professionals.

Full definitions: Appendix A (glossary).

Practice Problems: Chapter 27

  1. At what height does fall protection become mandatory for PV installation (construction)? For servicing (general industry)?
  2. Name the three OSHA-compliant fall-protection methods.
  3. What does PFAS stand for, and what are its three components?
  4. Which OSHA training is the field minimum, and which is required for leads and for NABCEP ESIP?
  5. Why are skylights a specific, named hazard as an array fills a roof?

Solutions: Chapter 27

  1. 6 ft for installation (construction); 4 ft for servicing (general industry).
  2. Guardrail systems, safety net systems, personal fall arrest systems (PFAS).
  3. Personal Fall Arrest System: a rated anchor, a full-body harness, and a lanyard/self-retracting lifeline.
  4. OSHA 10 minimum; OSHA 30 for leads/foremen and for ESIP.
  5. Modules consume the safe walking area, forcing crews near or over skylights, which can give way; they must be guarded or treated as fall hazards.