NFPA’s 2017 Edition of NFPA 70 (NEC) will impact facilities handling Anhydrous Ammonia
For years, NFPA 70, the “National Electric Code” has exempted Engine Rooms/Mechanical Rooms for refrigeration processes using Anhydrous Ammonia from having to be Electrically Classified Hazardous Locations (HAZLOC) as long as the room had “adequate ventilation”. The exemption in NFPA 70 has always been sort of vague and referenced the ventilation requirements in ANSI/ASHRAE 15-1994, Safety…...
