UN 0012 — Cartridges for weapons, inert projectile

UN 0012, also known as cartridges for weapons, inert projectile, is a solid explosive/propellant classified as a DOT Class 1 material. It is commonly used in training and law enforcement applications. First responders may encounter this substance during transportation accidents or training exercises. The scale of production and transport of UN 0012 is significant, with thousands of cartridges being manufactured and shipped daily. As a result, it is essential for emergency responders to be familiar with the hazards and response procedures for this substance. UN 0012 is typically stored in metallic cartridges containing propellant powder but no explosive projectile. The cartridges are usually made of brass or steel casing with a primer. When intact, the cartridges are odorless.

Hazard overview: UN 0012 poses a deflagration hazard if heated, and the projectile can cause injury or initiate secondary fires. The substance is not toxic, but the projectile hazard can be severe. In the event of a fire, the cartridges can explode, releasing shrapnel and causing further damage. The worst-case scenario for first responders is a large-scale fire involving multiple cartridges, which can lead to a significant explosion. The vapor density of UN 0012 is not applicable, as it is a solid substance. However, the propellant powder can be ignited, causing a rapid release of gas and potentially leading to a deflagration. The reactivity of UN 0012 is generally low, but it can be sensitive to heat, shock, and friction.

Response guidance: In the event of a UN 0012 incident, first responders should isolate the area to a minimum of 100m in all directions, as per ERG 114 guidelines. If a fire is involved, the isolation zone should be increased to 500m, and evacuation should be considered for 800m downwind. The correct suppression agent for UN 0012 is water spray, fog, or foam, which can help to cool the substance and prevent further ignition. CO2 and dry chemical agents are also effective. Decontamination procedures should be followed, and CHEMTREC should be contacted if necessary. It is essential to stage upwind and limit personnel to essential responders only to minimize the risk of injury from the projectile hazard.

Firefighter training notes: First responders should be trained to recognize the hazards of UN 0012 and respond accordingly. A common tactical error is to approach the substance without proper isolation and PPE, which can lead to injury or death. ICS position needs include a hazardous materials technician and a law enforcement liaison to ensure proper handling and disposal of the substance. Mutual aid criteria should include the availability of specialized equipment, such as explosive ordnance disposal (EOD) teams.

Regulatory context: UN 0012 is classified as a DOT Class 1 material, which indicates a high level of hazard. The OSHA PEL for this substance is not well-established, but it is essential to follow proper handling and storage procedures to minimize the risk of injury. UN 0012 is not listed on the CERCLA list, but it is still considered a hazardous material and should be handled accordingly.

Storage & handling: UN 0012 should be stored in a cool, dry place, away from heat sources and ignition sources. The temperature limit for storage is not well-defined, but it is essential to keep the substance away from moisture and humidity. Incompatible materials for UN 0012 include other explosive or flammable substances, which can increase the risk of fire or explosion. Ventilation standards should include proper airflow to prevent the accumulation of explosive or flammable vapors.