The degree of confinement necessary usually is greatest for the purest material. The standard covers building construction, pile sizes, spacing and separation of ammonium nitrate from contaminating material that could increase its sensitivity during a fire. Also covered are flow, cleanliness of the storage area and precautions against ignition sources. Create as much ventilation as possible to permit smoke, gases and heat to escape and to prevent pressure build-up. Flood the burning ammonium nitrate with water to rapidly reduce the temperature of the burning material.
Anhydrous ammonia can cause severe burns upon contact.
Contact with the liquid ammonia also can cause loss of sight, severe injury of the respiratory membranes and varying degrees of irritation of skin, eyes and mucous membranes. If working around the shut-off valves, also wear rubber gloves and a rubber apron to protect your body from contact with liquid. If you are exposed to liquid anhydrous ammonia, wash the exposed area with water for at least 15 minutes or until you receive medical attention. If in an enclosed area, ventilate the fire. Keep the storage vessels cooled with water.