NAVY MS15430-1953 MASK GAS ND MARK V INSPECTION STANDARD《ND MARK V检查标准气体面罩》.pdf

1、INSPECTION STANDARD MASK, GAS, ND MARK V Visual and Dimensional .hspection (classification of defects as per Standard MIL-STD-105) Critical Defects: 1, Gas Mask incomplete. 2. hieumatic seal punctured. 3. Canister filter punctured. . 4. Outlet valve damaged. 5. Lens surface not free of cracks, split

2、s, or holes. 6. Rubber apron assembly not as specified. . Major Defects: (sampling as per specification) 101. Inlet check valve damaged 3r incorrectly assembled. 102. Speech diaphragm body and retainer ring threads not as specified. 103.- Rubber.material not free of sun checking. 104. Metal surface

3、finish not as specified. 105 Rubber face blank dimensions not as specified. 106. Canister holder location not as specified. 107. Air deflector tube location not as spcified. 108. Speech diaphragm outlet valve assembly dimensions not as spcified. 109. Speech diaphragm cellophane assembly not as speci

4、fied. 110. Buckle tabs and buckles not lppated and not reinforced as specified. .311. Head harness dimensions, strap locations and reinforcement not as required. 112, Canister assembly not as specified. 113. Canister container assembly (for metal containers) markin3 and coaticg not as specified. 114

5、. Mask carrier material and dimensions not as required. 115. Inner and outer rubber lip (lens) not as specified. 201. Met21 components (composition) not as specified. 203. Color of rubber not as specified. 204. Color of fabric in carrier not as specified. 205 Color of fabric in canister not white or

6、 natural. 206. Face blank contour over.peripheral seal (exterior) not as specified. 207. Head harness reinforcement not completely sealed on edges. 208. Marking; mask, canister and canister container missing or illegible. Minor Defects: - . 202. Blooming of rubber (non-sulphur). inspection Testnq: (

7、sa.hpling as per specification) . Elongation prior to and afteraging. . Rubber Physical Tests: Tensile strength prior to and after aging. Permanent set, prior to aging. Hardness prior to aging. Tensile zt 200 percent elongation prior to and after aging. Compression set. Tear resistance. . Rubber Tox

8、icity Tests: (at a Government laboratory) Toxicity in excess of acceptable limits, see laboratory report. _. - Test requiTed on preproduction sample. .+ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flS15430 L(2 W 9999912 O009945 1 W Pneumatic Tube

9、 (peripheral seal) Inflation. Thickness of cut sections. Lens and Face Piece Assemblv Leakqc between lens and rubber. Light tra-rismission before heat exposure. Resistance toflefingat cold temperature. Deformation kausedbg .aging. Light transmission after heat exposure. Lens to rubber bond strength.

10、 Speech Diapham Assembly . Diaphragm strength not as specified. Diaphragm leakage more th& allowed. Leakage be.tween diaphram assemblv an .&ce piece. Outlet valve (rubber) led-age more tlian allowed. Outlet valvs resistance lo air flow. . - Mask (wthout canisters) Resistance to air flow. Leakage. He

11、ad Harness Strength of reinforced rubber. Canistm Tests: Canister apron leakage more than allowed. Canister gas life aft& rough handling less than required. Canister resistance to air flow less or more than zllowed. Canister fill (impregnated charcoal) not as specified. Chemical particle size not as

12、 specified. Sm okr penetration. Smoke penetration after .rough. handling. Security of rubber apron in canister. Moisture in canister. Canister Hdder: Security of holder in face -piece. Canister .Packzge Water submergence to test seal: Referenced shail apgly. s w c 3ica.t i om and standards of the is

13、sue in effect on date of invita ti on for bids Note: This standard is for the guidance of Government inspectors to assure uniformity of acceptance inspection. It does not alter the specification or the terms of the contract The Government reserves the right to determine at its sole discretion, as they arise, any defects not included herein. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-