NFPA 1006 Office Of The Fire Marshal (OFM) Practice Test

When should a carabiner be discarded?

Bent. Gate sticks or closes sluggishly. Latch mechanism broken. Gate has a broken spring.

Correct Answer:

Gate sticks or closes sluggishly.

Explanation:

A carabiner must function so the gate snaps closed and remains closed under load. If the gate sticks or closes sluggishly, the internal mechanism may be worn or blocked, preventing reliable closure and locking. That means the carabiner could unexpectedly open when loaded, compromising the safety of the system. Discarding it removes the risk of a false sense of security from a visibly compromised piece of hardware. (Visible damage like bending or a broken latch are also unsafe in practice, but sluggish gate closure directly signals a failure in the critical closing mechanism, which is why this condition is the deciding factor.)

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