drains or water sources.

Ensure the area is flat and stable to prevent tilting or movement of containers.

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System Placement:

• Install bunds or spill trays to cover the entire base area of the storage container or tank.
• For double-walled tanks, ensure proper alignment and no visible gaps between layers.

Capacity Requirements:

• Ensure secondary containment can hold at least 110% of the largest container’s volume or 10% of the total stored volume, whichever is greater.

4.3 Use of Secondary Containment Systems

1. Storage Guidelines:
   • Place all liquid waste containers within the designated containment system.
   • Ensure containers are sealed and labeled with the type of liquid waste and hazards.
   • Do not overfill containers to prevent spills during movement or handling.

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2. Handling Spills and Leaks:
   • Immediately transfer leaked liquid to a safe container using spill kits.
   • Inspect the affected secondary containment system for damages or contamination.
   • Dispose of spill cleanup materials as hazardous waste.
3. Daily Usage Practices:
   • Ensure all waste is stored within the containment system when not in use.
   • Keep the containment system free of debris and excess liquid.

4.4 Inspection and Maintenance

1. Inspection Checklist:
   • Check for cracks, holes, or corrosion in the secondary containment system.
   • Verify that the system is properly aligned and securely placed.
   • Ensure drain valves (if any) are closed and sealed unless being actively used.

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2. Maintenance Schedule:
   • Perform monthly inspections and document findings in the Containment System Inspection Log (Annexure 1).
   • Repair or replace damaged components promptly to maintain integrity.

4.5 Emergency Response

1. Spill Containment:
   • Isolate the area and notify the Safety Officer immediately.
   • Use spill containment materials (e.g., absorbents, neutralizers) to manage the leak.

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2. Incident Reporting:
   • Document the incident in the Spill Incident Log (Annexure 2).
   • Review and update procedures to prevent recurrence.

4.6 Documentation

1. Record-Keeping:
   • Maintain inspection logs and maintenance records for all secondary containment systems.
   • Retain spill and incident reports for compliance audits.

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2. Regulatory Reporting:
   • Submit reports on major spill incidents to the relevant authorities within the required timeframe.

5) Abbreviations, if any

• PPE: Personal Protective Equipment
• SDS: Safety Data Sheets

6) Documents, if any

• Containment System Inspection Log
• Spill Incident Log
• Maintenance Records

7) Reference, if any

• EPA Spill Prevention, Control, and Countermeasure (SPCC) Guidelines
• OSHA Hazard Communication Standards
• ISO 14001 Environmental Management Systems

8) SOP Version

Version: 1.0

Annexure

Template 1: Containment System Inspection Log

Date	System Type	Inspection Findings	Action Taken	Inspector Name
DD/MM/YYYY	Spill Tray	No issues	None	John Doe

Template 2: Spill Incident Log

Date	Location	Incident Description	Corrective Action	Reported By
DD/MM/YYYY	Storage Area 1	Spill in secondary containment	Cleaned and container replaced	Jane Smith