MIL-STD-398A
4.2.2.2 Simulated operational bay environment. Shields designed for use in an operating bay shall be tested in a simulated operational bay environment (Fig. 1) which simulates a bay(s) of a typical ammunition operating building. For test purposes, the test facility shall include the following:
a. Three dividing walls forming a "U" shaped bay at least 10 feet (3.05 meters), and no more than 15 feet (4.57 meters), wide at the opening, and at least 12 feet (3.66 meters), and no more than 22 feet (6.71 meters), from the open end to the back wall. Each side wall should have an opening at least 24 inches (0.61 meters) x 24 inches (0.61 meters), 24 inches (0.61 meters) above the floor within 24 inches (0.61 meters) of the back, to simulate conveyor openings between bays.
b. A hall or aisle across the front opening of "U" shaped bay, at least 6 feet
(1.83 meters), and no more than 10 feet (3.05 meters), wide.
c. A "U" shaped bay of similar size shall be attached to the test bay, to simulate adjacent bays in an operating building.
d. A frangible front wall and ceiling (roof) attached to a wood or steel frame. Other equipment that can be identified as necessary to the operation shall be located in the bay at the time of the test. This equipment can be of a simulated nature, if approved by authorized authority.
4.2.3 Test methods. Shields shall be tested as required to assure conformance with design requirements, using methods detailed in Section 5 of this standard. Tests may be made in any sequence or combination which will result in the most efficient accomplishment of the test objectives.
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