Pump Calcs

Hazard Risk Category

Categories defined by NFPA 70E-2004 to explain protection levels needed when performing tasks. The values range from 1 to 4. ATPV rated PPE is required for categories 1 through 4 as follows: 1- 4 cal/cm_; 2- 8 cal/cm_; 3- 25 cal/cm_; 4- 40 cal/cm_.