05 — Hot Work and Coatings
Three closely related processes that often share a workshop or site: welding, abrasive blasting, and spray painting / powder coating. All three involve fume / dust capture at the source, fire / explosion control, respiratory protection — and substrate-borne hazards (lead, RCS, asbestos coatings, isocyanates) that often dominate the engineering-control decision.
Topics in this section
| Topic | One-liner |
|---|---|
| [[welding_processes]] | Five process families; fume capture (LEV / on-tool); hot-work permit; arc-flash UV; cylinders upright + chained; air-supplied RPE in confined spaces. |
| [[abrasive_blasting]] | Silica sand banned; substrate sampling first; dead-man control; air-supplied AS/NZS 1716 Class CE respirator mandatory; health monitoring. |
| [[spray_painting_and_powder_coating]] | Isocyanates → respiratory sensitisation; air-supplied RPE; explosion-protected booths; static / bonding controls; HEPA vacuum cleanup. |
When to use this section
- Setting up or auditing a workshop bay.
- Choosing PPE / RPE for a new substrate or paint system.
- Pre-purchase: ventilation, booth, dust-collection capacity.
- Investigating an exposure incident — was the hierarchy applied?
- Planning hot work outside a designated bay.
Related sections
- §02 [[02 - Construction Work/_section_overview|Construction Work]] — HRCW SWMS for hot work near combustibles or in confined spaces; renovation of older buildings (asbestos coatings, lead paint).
- §04 Plant and Electrical — welder electrical safety, blast-pot pressure equipment, electrostatic gun grounding.
- §06 Hazardous Chemicals (Phase 4) — SDS, storage, GHS labelling for solvents, paints, blast media.
- §07 Dust and Asbestos (Phase 4) — RCS, lead, asbestos coatings.
- §08 Manual Tasks Noise and Confined Spaces — welder posture, plasma noise, blast room as a confined space, paint booth as a confined space.
- §01 [[01 - Foundations/_section_overview|Foundations]] — risk process, glossary.
Notes on currency
- All three sources are 2018 SWA editions amended July 2020 for GHS Rev 7. No newer editions confirmed at 2026-04-27.
- From 1 July 2026: complying with these Codes (or equivalent / higher) becomes a positive duty.