NFPA 1500

Standard on Fire Department Occupational Safety and Health Program

This document addresses the occupational safety in the working environment of the fire service as well as safety in the proper use of tools, equipment, vehicles, protective clothing, and breathing apparatus. Career, volunteer, private, and military departments are included in the document. This is the standard that dictates the overlap requirements between coats and trousers:

The protective coat and the protective trousers shall have at least a 2-inch (50 mm) overlap of all layers so there is no gaping of the total thermal and barrier protection when the protective garments are worn.

The minimum overlap shall be determined by measuring the garments on the wearer, without respiratory protection, in both of the following positions:

(1) Position A – standing, hands together, reaching overhead as high as possible.

(2) Position B – standing, hands together, reaching overhead, with body bent forward at a 90-degree angle, to the side (either left or right), and to the back.

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