Metal Pretreatment Chemicals

EHS Policy

August 17, 2025
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EHS (Environment, Health & Safety) Policy draft tailored for a surface treatment / phosphating + pickling line.

1. Commitment

We are committed to conducting all operations in a manner that safeguards:

  • Employee health & safety
  • Environmental protection
  • Regulatory compliance
  • Community well-being

Our goal is Zero Harm to people, equipment, and the environment.

2. Scope

This policy applies to all:

  • Chemical handling (pickling acids, phosphating concentrates, additives, inhibitors)
  • Mechanical processes (shot blasting, handling of HR sheets)
  • Wastewater treatment and sludge disposal
  • Contractors and visitors within plant premises

3. Health & Safety Principles

  • Personal Protective Equipment (PPE): Mandatory use of acid-resistant gloves, face shield, goggles, respirators (when fumes present), safety shoes, and aprons.
  • Chemical Handling: Always add acid to water, never water to acid. Use closed transfer systems or dosing pumps where possible.
  • Ventilation: Maintain local exhaust and fume scrubbing for pickling tanks (HCl and H₂SO₄ vapors).
  • Training: Regular operator training in hazard identification, safe handling, and first aid.
  • Emergency Preparedness: Spill kits, eyewash, safety showers, fire extinguishers accessible; conduct mock drills quarterly.
  • First Aid: Immediate treatment protocols for acid/alkali burns, inhalation, or ingestion, with emergency hospital contact displayed.

4. Environmental Protection

  • Effluent Control:
    • Pickling rinses and phosphating effluents neutralized to pH 6.5–8.5.
    • Heavy metals and phosphates precipitated (lime + polymer).
    • Treated water must comply with statutory discharge norms.
  • Air Emissions: Acid mists scrubbed with alkali solution before release.
  • Waste Disposal: Sludge from effluent treatment classified as hazardous; stored in lined pits and disposed via authorized recyclers.
  • Water Conservation: Counter-flow rinse systems, cascading rinses, and conductivity control to minimize consumption.
  • Energy Conservation: Heat recovery on pickling tanks and use of high-efficiency pumps/blowers.

5. Regulatory Compliance

  • Adherence to Factories Act, Hazardous Waste Management Rules, CPCB/SPCB guidelines, and any local environmental laws.
  • Regular internal audits and statutory inspections.
  • Immediate reporting of non-compliance and corrective action.

6. Continuous Improvement

  • Regular review of bath life-cycle, chemical substitution with eco-friendly options (e.g., molybdate instead of nitrite accelerators).
  • Monitoring KPIs: accident frequency rate, chemical consumption per ton, effluent compliance rate.
  • Employee suggestions and feedback incorporated into EHS programs.

7. Responsibilities

  • Top Management: Provide resources, review EHS performance quarterly.
  • EHS Officer: Implement, audit, and update procedures; liaise with regulators.
  • Supervisors: Ensure workers follow SOPs and PPE usage.
  • Employees: Take ownership of personal safety, report hazards immediately.

8. Policy Communication

  • This policy will be displayed prominently in all work areas.
  • It will be explained during induction and refresher trainings.
  • Contractors and suppliers will be informed and required to comply.

✅ With this policy, your pickling & phosphating plant can demonstrate compliance during customer audits, ISO 14001 / ISO 45001 certification, and government inspections.

Here is a structured EHS SOP Checklist System aligned to the policy we drafted. These can be printed as tick sheets for operators and supervisors.

EHS SOP Checklists – Pickling & Phosphating Line

A. Daily Checklist (Operator level)

ItemCheckTick/Remark
PPE (gloves, apron, goggles, face shield, shoes) worn before entering line☐ Yes / ☐ No
Eyewash & safety shower operational☐ Yes / ☐ No
Acid/alkali storage containers closed & labeled☐ Yes / ☐ No
Tank fume exhaust running☐ Yes / ☐ No
Spill kit stocked & accessible☐ Yes / ☐ No
Bath temperature within limits (HCl < 40 °C, H₂SO₄ 50–60 °C, Phosphate 40–50 °C)Record
Bath pH/TA/FA within limitsRecord
Rinse water conductivity within limits (≤ 50 µS/cm for DM)Record
Effluent pH (ETP discharge) 6.5–8.5Record
Floors clean, no acid spillage☐ Yes / ☐ No
Waste drums properly closed, labeled & stored☐ Yes / ☐ No

B. Weekly Checklist (Supervisor level)

ItemCheckTick/Remark
Acid pickling bath Fe²⁺ content checked (HCl ≤ 80 g/L; H₂SO₄ ≤ 60 g/L)Record
Inhibitor level replenished (1–1.5% v/v)☐ Yes / ☐ No
Oil skimming from baths done☐ Yes / ☐ No
Overflow rinse maintained / cascading working☐ Yes / ☐ No
Neutralizer solution replaced☐ Yes / ☐ No
Air scrubber alkali solution replaced / pH checked (> 10)Record
First aid kits checked and restocked☐ Yes / ☐ No
Safety signage visible and legible☐ Yes / ☐ No
Hazardous waste inventory updated☐ Yes / ☐ No

C. Monthly Checklist (EHS Officer / Manager level)

ItemCheckTick/Remark
Effluent treatment plant (ETP) sludge quantity recordedRecord
Sludge disposal to authorized recycler documented☐ Yes / ☐ No
Effluent compliance report vs CPCB/SPCB norms reviewed☐ Yes / ☐ No
Stack/vent scrubber efficiency checkRecord
PPE stock replenishment☐ Yes / ☐ No
Chemical storage inspection (bund walls, leaks, ventilation)☐ Yes / ☐ No
Emergency mock drill conducted☐ Yes / ☐ No
Incident/near miss register reviewed☐ Yes / ☐ No
Training conducted/refresher for operators☐ Yes / ☐ No
Internal audit of SOP compliance☐ Yes / ☐ No

D. Records & Responsibility

  • Operator → fills Daily Checklist before/after every shift.
  • Supervisor → signs Weekly Checklist every Saturday.
  • EHS Officer → compiles Monthly Checklist and reports to Plant Head.

E. Display & Communication

  • Keep Daily Checklist laminated on shop floor with marker/eraser.
  • Weekly & Monthly checklists in EHS logbook with signatures.
  • Color-code issues:
    • ✅ Green = Ok
    • ⚠ Amber = Attention needed (record remark)
    • ❌ Red = Stop & Correct immediately

Download EHS Logbook

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