According to NFPA 1932, what should be done if a ladder's heat sensor turns dark?

When a ladder's heat sensor turns dark, it indicates that the ladder has been subjected to extreme heat, which could compromise its structural integrity and safety for use. According to NFPA 1932, a heat sensor is calibrated to change color in response to high temperatures, signaling that the ladder has potentially been damaged and may no longer meet safety standards for operational use.

Removing the ladder from service is crucial because its ability to perform safely under load could be significantly impaired due to heat exposure, even if no visible damage is apparent. This precautionary measure helps to ensure the safety of firefighters and any personnel relying on the ladder. Proper maintenance and adherence to safety protocols are fundamental, and removing such equipment from service is a responsible action in maintaining overall operational safety.

While inspecting the ladder may seem like a reasonable step, it does not address the underlying issue of potential degradation from heat exposure. Continuing to use it for training or simply replacing the sensor would not ensure the ladder's integrity is intact. Therefore, removing the ladder from service is the appropriate course of action according to NFPA guidelines.