SPRINKLER AND ALARM SYSTEMS

Permissible Stowage of Ammunition and Explosives - 14023_315

Aviation Ordinanceman 2 & 3 - Aviation theories and other practices
Page Navigation
301

Supply and Exhaust Ventilation Ventilation ducts and exhaust ventilation outlets to and from magazines provide forced-air ventilation, Air is forced through the ducts by electric fans installed within the duct work. Standard covers maintain watertightness and prevent the entrance of flames from hits on the ship during combat. Always close these covers during combat (general quarters) conditions, unless otherwise directed. If you inhale fumes from some types of ammunition, you might get slightly intoxicated. However, this should not appreciably reduce your work efficiency. Generally, there is sufficient air volume in large, sealed magazines and handling rooms to provide a safe working atmosphere for approximately 5 hours. Magazines that are continuously occupied by personnel are blown through or ventilated a minimum of once every 5 hours. Magazine Vent Check Valves Sometimes, it is necessary to operate the sprinkler system in magazines while the ventilation valves are secured When this happens, the magazine must be vented by an air escape to ensure that the pressure within the magazine doesn’t build up beyond the allowed pressure limits of its watertight boundaries. Magazine check valves allow air and water to escape from the magazine into one of the ventilation ducts or through an independent air escape. Exhaust Vents Aboard ship, most magazines, particularly missile magazines, are vented to the atmosphere. When missile motors burn, they rapidly produce large volumes of smoke and gas. To avoid spreading smoke and gas to other areas of the ship if a missile motor in a magazine accidentally ignites, the exhaust ducts are vented to the atmosphere. The area on the weather deck in the vicinity of an exhaust vent is potentially hazardous, and it is marked to warn personnel not to loiter (hang around) in this area. SPRINKLER AND ALARM SYSTEMS Primary and missile magazines, ammunition handling rooms, and most ready-service magazines are fitted with sprinkler systems. Sprinkler systems consist of spray heads or sprinkler-head valves arranged to dash water directly on the munitions and completely cover the magazine’s interior. Sprinkler systems for spaces located below the damage control deck (second deck on aircraft carriers) are arranged for local control at the valve and for remote control from the damage control deck (fig. 11-6) On aircraft carriers, the remote controls are normally divided into two groups—forward A1. A2. A3. A4. A5. A6. A7. A8. REVIEW NUMBER 1 ANSWERS TO QUESTIONS Q1. THROUGH Q8. NAVSEASYSCOM develops and approves specifications for construction of Navy ships. A ship's primary magazines are usually located below the waterline. Ready-service magazines are located close to the area to be served. The purpose of modular stowage is to give the greatest versatility and to minimize ammunition handling. The two areas that the IRRP created improved handling are rearming and weapons assembly. Squadron personnel use a HLU-196B/E hoist for preloaded IMERS and ITERS. Generally, magazines aboard ship are designated to hold a single type of ammunition. Authority for stowing mixed types of ammunition in a magazine rest with NAVAIRSYSCOM. 11-12

Privacy Statement
Press Release
Contact