Reference

A fire blanket cannot satisfy an OSHA extinguisher requirement - 29 CFR 1910.157 governs portable fire extinguishers and does not mention blankets at all, and a blanket carries no class or capacity rating. This guide covers the rating gap, the two jobs a blanket genuinely does better, and where it is the wrong tool entirely.

Fire extinguisher classes (A, B, C, D, and K) tell you which fires a unit can safely fight, and using the wrong class can spread a fire instead of stopping it. This guide decodes every class under NFPA 10, explains the numerical A and B ratings on the label, covers the PASS discharge method, and walks a worked example of equipping a workshop.