Petro-Chemical Industries

Industries / examples: Crackers and downstream units making olefins, aromatics, monomers and polymers.

Principal hazards & agents

Benzene, butadiene, vinyl chloride, ethylene oxide and other carcinogenic monomers
Flammable/explosive gases and liquids
Toxic and reactive intermediates; high pressure/temperature

Health effects

Leukaemia/lymphoma (benzene, butadiene), angiosarcoma of liver (vinyl chloride), cancers and reproductive effects (ethylene oxide), chemical burns, asphyxiation, blast/burn injuries.

Engineering controls

Fully closed and automated DCS-controlled plant; continuous toxic- and flammable-gas detection; LDAR; emergency shutdown and blowdown/flare systems; exposure monitoring for carcinogens; restricted-access enclosure of high-hazard units.

PPE

Air-fed / supplied-air respirators or escape sets
FR anti-static chemical suits and gloves
Face shields/goggles
Personal multi-gas monitors
Safety footwear

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