How to handle the removal of cable tray steel columns

Removing cable tray steel columns requires careful planning, power isolation, proper tools, and adherence to safety standards to prevent damage and injury.

Preparation and Safety

Before starting, review project drawings to identify the exact location and scope of the cable tray supports to be removed, ensuring no critical systems are affected . Disconnect all power to the area and verify with a voltage tester that no current is present in the cables or connected devices . Remove flammable materials and ensure proper fall protection if working at height. Only trained personnel should perform the removal to minimize risk .

Tools and Equipment

You will need tools such as wrenches, screwdrivers, and possibly hydraulic or pneumatic tools depending on the type of bolts and fasteners used . Temporary supports or lifting devices may be required to hold the cable trays or columns during dismantling to prevent sudden collapse .

Step-by-Step Removal

1. Power Isolation: Confirm that all electrical power is off and cables are safe to handle .
2. Remove Attached Cables: Carefully detach any cables running through the tray to avoid damage. Label or document cable positions if they will be reinstalled later .
3. Dismantle Supporting Structure: Loosen and remove bolts, nuts, and connectors securing the steel columns to the floor or ceiling. Depending on the design, this may require sequential removal to maintain stability .
4. Column Removal: Once the supports are free, carefully lower or lift the steel columns using appropriate lifting equipment. Ensure the area is clear of personnel and obstacles .
5. Site Cleanup: Remove all debris, fasteners, and leftover materials to maintain a safe work environment .

Best Practices

• Follow manufacturer and standard guidelines such as BS EN 61537 for cable tray systems and BS 6946 for channel supports .
• Avoid cutting or drilling structural building members without approval from the general contractor .
• Plan for future cable additions by considering load requirements and maintaining proper spacing during removal .
• Use personal protective equipment (PPE) including gloves, safety glasses, and fall arrest systems when working at height . By following these steps and safety measures, the removal of cable tray steel columns can be performed efficiently while minimizing risk to personnel and equipment.