Layering and Undergarments

According to NFPA 70E section 130.7 (C) (9) (a), layering of non-melting flammable garments is permitted to be worn under FR garments for added protection. However, the system arc rating of the innermost FR layer must be sufficient to prevent break open and ignition of the flammable under layer. Only FR layers within the layered […]

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