ATS Panel Method of Statement
1. Purpose
This method statement outlines the procedure for installation of the Automatic Transfer Switch (ATS) Panel to ensure compliance with applicable electrical standards and project specifications. It includes the tools and materials required, quality control measures, safety precautions, inspection & testing procedures, and documentation for final acceptance.
2. Scope of Work
- Delivery and handling of ATS Panel.
- Mounting and installation of ATS Panel.
- Termination of incoming/outgoing cables.
- Electrical testing and commissioning.
- Final inspection and documentation.
3. References
- IEC 60947 – Low-voltage switchgear and control gear.
- NFPA 70 – National Electrical Code (NEC).
- Project specifications.
- Manufacturer’s installation manual.
- Local authority regulations.
4. Responsibilities
- Project Engineer: Supervise installation, ensure compliance with standards.
- Electricians: Perform physical installation and wiring.
- QA/QC Engineer: Conduct inspections and testing as per ITP.
- HSE Officer: Monitor safety compliance and risk controls.
5. Tools and Equipment
- Drill machine
- Measuring tape
- Torque wrench
- Level
- Insulation resistance tester (Megger)
- Multimeter
- Cable cutter and stripper
- Crimping tools
- PPE (Gloves, helmet, safety shoes, etc.)
6. Materials Required
- ATS Panel (As per approved specifications)
- Cable glands, lugs, ferrules
- Power and control cables
- Earthing materials
- Identification labels
7. Installation Procedure
7.1 Pre-Installation
- Verify ATS panel specifications with approved drawings.
- Check panel for physical damages and compliance with delivery documents.
- Ensure the area is clean and ready for installation.
- Conduct Job Safety Analysis (JSA) and toolbox talk.
7.2 Mounting of ATS Panel
- Position the ATS panel on the floor/wall-mounted support.
- Use anti-vibration pads if required.
- Ensure panel is level using a spirit level.
- Securely fasten panel using anchor bolts.
7.3 Cable Termination
- Route power and control cables as per layout.
- Strip and terminate cables using appropriate lugs.
- Ensure torque tightening as per manufacturer recommendations.
- Properly label all cables and terminals.
7.4 Earthing & Bonding
- Connect earth bar of ATS panel to the main earth grid.
- Ensure all metallic enclosures and doors are bonded.
7.5 Pre-Commissioning Checks
- Visual inspection for wiring and labeling.
- Check phase sequence and insulation resistance.
- Verify mechanical interlocks and manual transfer operations.
8. Inspection & Test Plan (ITP)
| Activity | Inspection Level | Reference | Acceptance Criteria | Responsible |
|---|---|---|---|---|
| Material Delivery | Witness | PO, Material Submittal | As per Approved Material Submittals | QA/QC + Consultant |
| Panel Installation | Hold | IFC Drawings | Correct positioning, leveling, secure fixing | Site Engineer + QA/QC |
| Cable Termination | Witness | Cable Schedule | Tight torque, labeling, ferruling | QA/QC |
| Earthing and Bonding | Hold | Single Line Diagram | Continuity and resistance < 1 Ohm | QA/QC + Consultant |
| Insulation Resistance Test | Witness | Test Procedure | > 1 MΩ (500V) | QA/QC |
| Functional Testing (Auto/Man) | Hold | Commissioning Procedure | Correct auto/manual switching | QA/QC + Client |
9. Quality Control Checklist
- ATS panel is damage-free and approved.
- Installation is as per approved drawings.
- Panel is securely fixed and level.
- All cables are terminated correctly and labeled.
- Earth continuity verified.
- Insulation resistance test passed.
- Functional test completed (manual & automatic mode).
- Documentation signed and recorded.
10. Risk Assessment
| Activity | Hazard | Risk | Control Measures | Responsibility |
|---|---|---|---|---|
| Lifting & Shifting ATS Panel | Physical injury/crushing | Medium | Use proper lifting tools, trained personnel, PPE | HSE Officer + Workers |
| Drilling & Mounting | Eye injury, dust inhalation | Low | Safety goggles, dust mask | Technician + HSE |
| Electrical Termination | Electric shock | High | Lockout/Tagout (LOTO), use insulated tools | Electrician + Supervisor |
| Testing & Commissioning | Arc flash, short circuit | High | Test with certified instruments, maintain safe distance | QA/QC + Engineer |
11. Personal Protective Equipment (PPE)
- Safety helmet
- Safety gloves
- Insulated tools
- Safety boots
- Arc flash suit (for testing)
- Safety goggles
12. Emergency Procedures
- First aid kit available on site.
- Emergency contact numbers posted.
- Immediate shutdown in case of electrical fault.
- Fire extinguisher available near the installation area.
13. Documentation
- Inspection Reports
- ITP Sign-offs
- As-built drawings
- Manufacturer test certificates
- Commissioning report
- Handover documents