Electro-plating Industries

Industries / examples: Chrome/nickel/cadmium/zinc plating and anodising shops.

Principal hazards & agents

Chromic acid mists (hexavalent chromium)
Nickel, cadmium and cyanide bath chemicals
Strong acids and alkalis
Hydrogen evolution; acid mists

Health effects

Cr(VI) - nasal ulceration/perforation, dermatitis and lung/sinus cancer; nickel sensitisation; cadmium toxicity; cyanide poisoning (especially if mixed with acid - HCN); acid burns.

Engineering controls

Push-pull/lateral LEV at tank lips, fume suppressants/mist eliminators; strict separation of cyanide and acid baths; surface tension control; air monitoring for Cr(VI)/Ni; emergency showers/eyewash; cyanide antidote provision.

PPE

Acid-gas / chromic-mist respirators
Long PVC/neoprene gloves, aprons and boots
Face shields/goggles
Cyanide-area cyanide first-aid PPE
Chemical-resistant clothing

Statutory vs annotation: only the entry name and its sub-items are First-Schedule text. The hazard, health-effect, control and PPE notes are occupational-hygiene context, not statutory text. First Schedule, the Factories Act, 1948 [See section 2(cb)] — "List of Industries involving hazardous processes" (29 entries). Section 2(cb) defines "hazardous process". Verbatim list confirmed against the official Factory Inspectorate (Government of Puducherry, Labour Department) publication of the Factories Act, 1948 (py.gov.in/sites/default/files/labourfactory.pdf) and cross-checked with the bare-act text at AdvocateKhoj (advocatekhoj.com/library/bareacts/factories/schedule1.php). The Schedule may be amended/added to by the State Government under section 2(cb) read with section 41A.

Reference information for occupational-health professionals — not medical advice, and not a substitute for examination by a qualified physician.

Other hazardous processes

All 29 hazardous processes — First Schedule

MedFactory — Occupational Health Centre software for Indian factories