Occupational Safety, Environmental Awareness and Workplace Practices
Workplace hazards and controls
Food plants combine machinery, steam, refrigeration, chemicals and wet floors. Identify hazards as physical, chemical, biological, electrical, ergonomic and fire-related. Apply the hierarchy of controls: eliminate, substitute, engineer (guards, interlocks, ventilation), administer (training, permits, rotation), and use PPE as the last line. Guards must not be removed; no loose clothing or jewellery near rotating shafts.
Lockout–tagout is the standard for maintenance and cleaning inside mixers, conveyors or fillers: isolate the energy source, lock, tag, release stored energy, verify zero energy, then work. Ammonia refrigerant needs leak detection and escape routes. Steam lines need insulation and correctly set pressure-relief valves. The Factories Act 1948, the Environmental Protection Act 1986 and FSSAI hygiene schedules set legal duties.
Environmental awareness
Dairy, fruit and rice processing generate high BOD/COD effluent. Treat with screening, primary settling, secondary biological treatment (activated sludge or UASB) and tertiary polishing before discharge or reuse. Segregate solid waste at source; use bran, husk, peel, whey and pomace as by-products or feed; recover rice husk ash; conserve water with CIP reuse and dry cleaning where possible. 5S and good housekeeping reduce accidents and pest harbourage.
Worked example
An operator must clean inside a ribbon mixer. Correct sequence: switch off, isolate the isolator, apply a personal lock and tag, press the start button to confirm no movement, release stored energy, then enter under a permit. Reasoning: cleaning is the most common time for accidental starts, and the verification step is what makes LOTO effective.
Traps
Treating PPE as the first choice of control; entering a confined space without gas testing; bypassing the ETP to save power; assuming dilute effluent is harmless; ignoring noise above the permissible limit; leaving guards off for a quick job.