A-A-50607 (SH)
3.4 Leak testing. Prior to shipping, each dry suit shall be inflated to one (1) psi with the sleeves, neck, and exhaust valve plugged off, submerged, chest up, in a test tank and tested for leaks. The suit shall then be rotated 180 degrees and retested to ensure that all areas of the suit have been tested in a manner which will cause no temporary or permanent damage to the dry suit. One leak per unit is allowed and shall be repaired only once. If the suspect area show further leakage after repair, the suit shall be rejected. Any suit containing more than one leak shall be rejected.
3.5 Seam testing. Using the test apparatus and procedures described in method 5100 of FED-STD-191, the seam samples shall be tested for breaking strength. The specimens shall be centered equidistant from the clamps. All pulls shall be made with the seam at right angles to the load direction. The clamps shall be one inch apart at the start of the test and the face of each jaw shall be not less than 2.54 cm by 5.08 cm (1.0 by 2.0 in). The seam test specimen shall be rectangular, 5.08 cm (2.0 in) wide by not less than 10.16 cm (4.0 in) long and shall be prepared a minimum of 12 hours prior to testing. The seams shall be aged by being suspended vertically in an air-oven at 70 ± 1 degrees Celsius (158 ± 2 degrees Fahrenheit) for seven days. At the conclusion of the ageing interval the specimens shall be cooled at room temperature on a flat surface and allowed to rest for 4 hours before determination of breaking strength. Two sets of five specimens each shall be tested: one set of five specimens not aged and one set of five specimens not aged and one set of five specimens after ageing. Upon completion of the breaking strength test, the five results for each set (not aged and after ageing) shall be averaged. These results shall meet the criteria of section 2.2 for initial and after ageing minimum breaking strength.
4.0 PACKAGING, PACKING AND MARKING.
4.1 Packaging, packing and marking. The dry suits shall be packaged in a watertight container such that the unit is not damaged by the neck ring during shipping. Each package shall contain one dry suit and one repair kit.
5.0 NOTES.
5.1 Intended use. This Commercial Item Description covers a dry suit to keep rescue swimmers dry during rescue operations.
5.2 Material substitution. The material selected for use is a tri-laminate material composed of 65 gr/m2 inner and outer nylon with an inner layer of 100 gr/m2 butyl rubber. This material exhibits the mobility and buoyancy requirements of the rescue swimmers. Any substitution of materials is prohibited.
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