A quantitative approach to determination of NFPA reactivity hazard rating parameters

The National Fire Protection Association (NFPA) has developed a system for labeling short‐term acute hazards of materials in fire, or emergency situations [1]. The procedures for obtaining the hazard rating for health and flammability are based upon measured quantities [2], but the basis for assigning reactivity ratings are largely qualitative [1]. This paper proposes a quantitative approach for assigning reactivity hazard ratings.