Standardized Removal of Cable Trays

Safe and standardized removal of cable trays involves careful planning, power disconnection, proper handling of cables, and adherence to relevant standards such as IEC 61537 and BS EN 61537.

Preparation and Planning

Before starting, review project drawings and verify the exact location and length of the cable trays to be removed. Mark the trays clearly and assess the surrounding environment to avoid damage to nearby equipment or structures. Develop a detailed plan including timeline, personnel responsibilities, and emergency procedures.

For complex installations, 3D simulations can help anticipate challenges. Approval from a technical lead is recommended before demolition begins.

Safety Measures

Ensure all power to the area is completely disconnected and verified using a voltage tester. Remove flammable materials and assess risks associated with working at heights. Use appropriate personal protective equipment (PPE) such as insulating mats, fall arresters, and safety harnesses.

Inspect all safety gear before use.

Tools and Equipment

Select tools based on the tray material: hydraulic shears or angle grinders for metal trays, and wrench sets or pneumatic tools for other materials. Temporary supports or jigs should be used to secure cables during removal. Non-metallic banding is recommended for bundling removed sections to prevent contamination or rust.

Removal Procedure

Support Structure Removal: Loosen bolts starting from the furthest supports. Use jacks to transfer loads and maintain stability. Treat any damaged protective coatings with anti-corrosion solutions.

Tray Disassembly: Remove straight sections as single pieces when possible. For bends or turns, disassemble section by section. Use loosening agents for rusty bolts instead of cutting.

Cable Protection: Secure cables to prevent swinging or damage. Separate power and control cables to avoid interference. Anchor vertical cables every 2 meters.

Material Sorting and Disposal: Separate metals, insulating materials, and old cables. Label hazardous waste and store it in a designated area. Reusable components should be inspected and logged.

Compliance and Standards

Follow IE

C 61537 for mechanical strength, corrosion resistance, and electrical continuity of cable trays.

BS E

N 61537 provides guidance for cable ladder and tray systems, ensuring safe installation and removal practices. Adhering to these standards ensures compatibility, safety, and long-term efficiency.

Final Steps

After removal, clean the site thoroughly and verify that all cables and supports are properly managed. Conduct a final inspection to ensure safety and compliance with standards. By following these steps, cable tray removal can be performed safely, efficiently, and in accordance with international and national standards.