Carpenters informally accepted operation of a substandard battery operated door drive mechanism, installed under a previous contractor, as a safe activity, and failed to capture operation/maintenance of the mechanism in the hazard analysis for their operation in that space, seeing it as unrelated to carpentry activities. Lack of formal maintenance and controls for operation of the unit led to an overcharging situation and battery casing failure.
Lessons Learned: Application of and adherence to formal change control/engineering processes, proper maintenance, and broader hazards analysis when setting up operations in new or repurposed work spaces are necessary to ensure employee safety.
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