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This unique All Purpose Defense (APD) shelter, developed during the 'Cold War', affords complete protection against the devastating power of a hurricane, and guarantees the ultimate in securing protection against personal injury from flying debris and blast overpressures.
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- Delivered in small easily handled sections.
- Easy to install and commission for use.
- Flexible modular design permits variable size.
- Tested to English MOD standards (REPORT) and appraised by The Atomic Weapons Research Establishment.
- Cost effective and upgradeable to various levels of protection, e.g., biological.
- Many other uses - secure storage, wine cellar, document repository, firearms and ammunition store.
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- The shelter (~3.3 tonne) consists of 9 x main frames, octagonal in shape, which are joined together with tubular distance pieces at the four cardinal points. This creates the main structure which is 3600 mm long and 2.4 m wide over the outer angle frames.
- On each end frame a set of end covers are attached, one consisting of two outer plates and a center plate, the other one consisting of two outer plates and a bottom plate. The latter end cover provides an opening, 1800 mm high x 760 mm wide, where the conning tower is bolted.
- Where joints occur in the covers, and this also includes the end covers, a rubber sealing strip is placed between mating surfaces to effect a moisture-tight seal and, in addition, fiber washers are placed under all bolt heads.
- Holes are provided in each end cover to take the air inlet (for the exhaust pump) and exhaust pipe flanges, which are supplied complete with gaskets. These should be located at opposite ends; the air inlet occurring at the end remote from the bunks. Similarly, at the same end, the bilge pump bracket is located together with its outlet.
- The main shelter cover consists of pre-stressed, galvanized sheets which are lap jointed and bolted to the outside of the main structure; with the location of the horizontal joints occurring down the sides of the shelter.
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- 1x fine sawn softwood floor comprising 25 mm thick square edge boards supported on 100 x 50 mm joists at 450 mm center.
- 1 x exhaust vent fitted to the shelter at the opposite end to the air pump and consisting of a 76mm diameter pipe with a blast valve.
- 1 x manually operated centrifugal air pump fixed to a 76 mm diameter air inlet pipe which has a blast valve and coarse filter, the pump has a high gear ratio and 40 revolutions of the handle will provide 2 cubic meters of air per minute at 50 mm water gauge.
- 1 x inwardly opening 450 mm diameter escape hatch and cover located at the opposite end to the conning tower and in the central section of the end.
- 1 x 760 mm square conning tower approximately 3200 mm long bolted to one end of the shelter, complete with detachable access ladder and 1 x inwardly opening 450 mm diameter escape hatch and cover. the hatch cover on the conning tower will have an 8 mm Armour plate lid and adjacent skirt. This cover will be locked from the inside with a rotary locking mechanism and provision is included for unlocking the lid from the outside.
- 1 x hand operated bilge pump, located at the one end of the shelter and is terminated with a hose nipple for an outlet hose. A hole in the end cover adjacent to the hose nipple will enable the hose to pass through for discharging outside. On the inlet side a pipe will extend from the pump through the floor to the bilge.
- 4 x 1800 mm bunks with foam mattresses finished with the best quality waterproof coverings, each with 6 tie-on straps. The upper bunks can be lowered to form back rests for the lower bunks, thereby ensuring maximum seating capacity.
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