OSHA’s Regional Emphasis Program (REP) to reduce injuries, illnesses and fatalities related to workers’ exposures in fertilizer grade ammonium nitrate (FGAN) and agricultural anhydrous ammonia mixing/blending, storage, and distribution facilities has some very focused items for those facilities that store, handle, and dispense NH3 (29 CFR 1910.111). The standard applies to all facilities storing, handling, and dispensing anhydrous ammonia except those facilities where anhydrous ammonia is used for refrigeration or those facilities where anhydrous ammonia is manufactured. CSHOs shall: