Regarding a derail left in the non-derailing position, which statement is correct?

• A. True
• B. False
• C. It must be locked in the non-derailing position while working in that area.
• D. It should be removed from service.

Answer: (C)

When work is being done in an area where a derail is installed, the safety rule is to lock the derail in the non-derailing position. A derail is designed to stop or divert equipment to prevent movement onto another track, but if it’s left in the derailing position or even loose, it could be moved accidentally by a bump, a handler pull, or a misstep. Securing it in the non-derailing position ensures it cannot be moved into a derailing condition while personnel are nearby, reducing the risk of injury or equipment damage. Removing the derail from service is not the standard practice for routine operations in the area; that would be reserved for a device that is defective or needs maintenance, not just for ordinary work in the vicinity.