1、MIL-M-85831 92 m 7997906 0236587 9 m I INCH POUND 1 MIL-M-85831(AS 6 November 1989 MILITARY SPECIFICATION MASK, HELICOPTER AIRCREWMAN, CHEMICAL, BIOLOGICAL, RADIOLOGICAL PROTECTIVE, NON-OXYGEN This specification is approved for use within the Naval Air Systems Command, Department of the Navy, and is
2、 available for use by all Departments and Agencies of the Department of Defense. d i 1. SCOPE 1.1 Scope. This specification establishes the requirements for the manufacture and acceptance of a mask to be used with and form part of the Protective Assembly, Helicopter Aircrewman, Chemical, Biological,
3、 Radiological (PASS). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The fol lowing specifications, standards, and handbooks form a part of this specification to the extent Specified herein. Unless otherwise specified, the issues of these documents
4、shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS FEDERAL PPP-6-566 - Box, Foldi ng, Paperboard. PPP-c-795 - Cushioning Material, Flexible, Cellular, Plastic Film for Packag
5、ing Applications. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Air Engineering Center, Systems Engineering and Standardization Department (Code 531, Lakehurst, NJ 08
6、733-5100, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 4240 DISTRIBUTION STATEMENT A. Approved for pub1 ic release; distribution is un1 imi ted. 7 . THIS DOCUMENT CONTAINS 351 PAGES. Provided
7、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-18307 - Mr L-w-1.8307: - MIL-M-8583L 42 7799706 023b588 b m Nomenclature and Identification for Aero- nautical Systems Including Joint Electronics Type Designated Systems and Assoc i ated Support ystems N
8、omenclature and Identification for Aero- nautical Systems Including Jo-int ETectronics Type Designated Systems and Associ 7PromulgatIon Df, - General Sped fi cation for Desdgn and Construction of Aircraft Aeapon Systems. - Aviation-Crew Systems Aircrew Personal - Aviation-Crew Systems, Special Missi
9、on Protective Equipment. Aircrew Equi pment . Naval Air Development Center NADC Report - 86-60 - I NADC Fuel Fire Test Facility. Headquarters, Depa,rtment of the Army Army Field - - NBC Decon tami nation Manual FM 3-5 Envi ronmental Protection Agency EPA 560/6-82-001 - Report, Health Effects Test Gu
10、idelines, August 1982. Code of Federal Regulations 2 1 CFR 100-1 99 - Food and Drugs. (Copies of specifications, standards, handbooks and other Government documents required by contractors in connection with specific acquisition functions should be obtained -from the contracting activity or as direc
11、ted by the contracting activity.) specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed
12、 in the DODISS shall be the issue of the nongovernment documents which is current on the date of the solicitation. 2.2 Other publications. The following documents form a part of this AEROSPACE MATERIALS SPECIFICATIONS AMs-3238 - Butyl Rubber, Phosphate Es ter Resistant. (Application for copies shoul
13、d be addressed to the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.) . . 0 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-853L 42 W 777770b 0236573 b - - _ MIL-M-85831 (AS) AMERICAN SOCIETY FOR TESTING AND MATE
14、RIALS ASTM D 3951 - Commercial Packaging. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited here
15、in, the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. Masks furnished under this specification shall be products which are aut
16、horized by the qualifying activity for listing on the applicable qualified products list at the time set for the opening of bids (see 4.3 and 6.3). I) 3.2 First article. When Specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.4 and 6.4). 3.3 S
17、election of specifications and standards. Specifications and standards for nessesary commodities and services not specified herein shall be selected as specified in MIL-STD-143. 3.4 Materials, Materials referenced herein shall conform to applicable specifications and standards. specifications and th
18、at are not specifically described herein shall be the best quality and the lightest practical weight. Materials shall be corrosion resistant, or suitably treated to resist corrosion due to fuels, salt spray, environmental, chemical or biological warfare conditions. All materials used in the mask sha
19、ll be compatable with 100 percent oxygen atmospheres and shall not transfer odor of an obnoxious or unpleasant type. 3.4.1 Aluminum alloy parts. Aluminum alloy parts shall be anodically treated as specified in MIL-A-8625. Materials that are not covered by 3.4.2 Dissimilar metals. Dissimilar metals s
20、hall not be used in intimate contact with each other. Dissimilar metals are as specified in MIL-STD-889. 3.4.3 Nonmetallic materials. Rubber seals and O-rings shall meet the requirements as specified in AMs-3238 and the requirements specified herein. 3.4.4 Fungus-proof materials. All materials shall
21、 be incapable of supporting fungoid growth. 3.4.5 Aqe. Elastomeric components shall be comprised of materials with expected shelf storage life of greater than 5 years as specified in MIL-HDBK-695 when consistent with the properties required for functional suitability. These components alone or as pa
22、rt of an assembly shall be delivered to the Government with less than 18 months elapsed from date of cure/manufacture to the date of delivery to the Government. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-53L 42 9999906 0236592 - -_ _ - M
23、LL-M-85831 (AS) 3.4.6 T0xi.c materials, The use of materials which produce toxic effects under any cmditions shall be avoided. 3.4.7 Flammable materials. The use of materials which will support combustion shall he avoided. 3.5 Desigrr and canstruction. The mask shall be used with and form part of th
24、e protective assembly (PASS), 8s shown on Figure 1. The mask shall meet the requirements as, specified in MIL-P-85833 and this specification- The design and construction of the mask shall be as shown on Figures 2 and 3. The mask and all its accessories and components shall fit the 3rd to 98th percen
25、tile male aircrewman as specified in MIL-P-85833. The design and construction shall permit decot-rtarnination, using procedures of Army FM 3-5, without damage to or deterioration of the mask or its protective capability. 3.5.1 Interfaces. The mask is intended for use in all USN/USMC helicopters (H-1
26、, H-2, H-3,- H-46, H-53 and H-60 series) and shall be compatible with crew station hardware and the electrical power systems aboard the aircraft. It shall be compatible with all missions of these helicopters, including use of optiral, targeting and sighting devices, and shall be compatible with and
27、integrate with personal protective clothing and devices as required by OPNAVINST 37T0.7 and NAVAIR manual 13-1-6.7, and chemical, biological, radioTogica1 (CBR) protective clothing in NAVAIR manual 13-1-6.10, including sequential use of the SRU-36/P, Helicopter Emergency Escape Device (HEED). The ma
28、sk shall also be compatible with laser protective equipment. -3.5.2 Storage life+ The mask shall be designed to meet the performance requirements of this specificatian after five years storage under worldwide climatic conditions specified in MIL-STD-210, when packaged as specified in MIL-STD-794. 3.
29、5.3 Interchangeability. Al 1 parts, subassemblies and assemblies having the same part number shall be identical as specified in DOD-STD-480 and DOD-STD-100. When any unit or part is interchanged, the mask shall meet all performance requirements without adjustment or modification of any part or subas
30、sembly. 3.5.4 Thermal protection. The mask shall provide protection against thermal effects up to 10 cals./cm.2, to meet overall thermal load requirements of the PASS system (see MIL-P-85833). 3.5.5 Intersystem leakage. The wearer shall be able to adjust the tension of the orinasal mask on his face,
31、 both on the ground and in flight, to hold a positive mask pressure without impairing the protection provided by the mask. The leakage between the head and neck region and the respiratory compartment of the mack shaT1 be such that: a. The inboard leakage into the respiratory compartment does not exc
32、eed 0.1 percent of the pulmonary ventilation when the mean pressure inthe compartment is four in. water gage (WG.1 greater than that of the environment. b. The outboard leakage is less than .O2 cfm. when the mean pressure in the compartment is four in, WG. greater than that of the environment . 6 Pr
33、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5.6 Visor compartment pressure. Under normal operating conditions the pressure in the visor compartment shall be greater than the local ambient pressure by 0.25 in. WG. With the head held still the pres
34、sure shall not exceed the ambient by more than 0.4 in. WG. to not more than 1.0 in. WG. greater than ambient shall be permitted. On head movement transient pressure rises 3.5.7 Resistance. 3.5.7.1 Ventilation. The air flow resistance from the ventilator thru the manifold and the hood compartments sh
35、all be such that a nominal flow of 50 lpm and a minimum flow of 10 lpm is achieved while maintaining a hood compartment pressure between 0.2 and 0.4 in. of water gauge. 3.5.7.2 Respiration. The air flow resistance from the ventilator thru the manifold and the mask compartment shall be such that a no
36、minal flow of 50 lpm and a peak inspiratory flow of 170 lpm is achieved while maintaining a mask compartment pressure between 1.5 and 4.5 in. of water. 3.6 Hardware. 3.6.1 Fasteners. All fasteners, including bolts, screws washers and hinges shall be as specified in SD-24. nuts, rivets, 3.7 Quantitat
37、ive reliability requirements. When tested MIL-STD-781 as saecified in 4.8.4, the mean time between fai n accordance with Ure for the mask, based on an exponential distribution of failure times, the lower single sided 90% confidence 1 imi t , shall be 500 hours. The performance requi rements specifie
38、d in 3.8.1, 3.8.2, 3.8.3, 3.8.4, 3.8.5. 3.8.6, and 3.8.7 shall be the reliability requirements for determining mean time between failures. 3.8 Performance. 3.8.1 Inspiratory and hood air supply components leakage. Nhen tested as specified in 4.8.2.1, the leakage rate shall be not greater than .O1 in
39、.l/min. with the facepiece inlet valve sealed, and shall be not greater than 1.2 in.s/min. with the facepiece inlet valve unsealed. 3.8.2 Mask facepiece cavity leakage. When tested as specified in 4.8.2.2, the leakage rate shall be not greater than .31 in.3min. 3.8.3 Reverse leakage through expirato
40、ry valve assembly. When tested as specified in 4.8.2.3, the leakage rate shall be not greater than .31 in.3/min. 3.8.4 Load test on hood and mask facepiece tube connections. When tested as specified in 4.8.2.4, there shall be no signs of slippage or damage to the hood or mask facepiece tubes or thei
41、r connections at each applied axial load. 3.8.5 in 4.8.2 3.8.6 show con Assembly leakage into the hood compartment. When tested as specified 5, the leakage rate shall be not greater than ,004 in.3/min. Microphone and plug assembly. The microphone and plug assembly shall inuity when tested as specifi
42、ed in 4.8.2.6. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-S31 42 W 7779706 023b574 L m 3.8.7 Overall leakage. When tested as specified in 4.8.2.7, there shall be no leakage during a one minute period. 3.8.8 Valsalva device. The. valsalva
43、 device shall operate freely and smoothly when tested as specified in 4.8.2.8. There shall be no failure of the valsalva device or any of its components. 3.8.9 Restraint harness. The restraint harness assembly shall operate freely and smoothly when tested as specified in 4.8.2.9. There shall be no f
44、ailure of the restraint harness or any of its components. 3.8.10 Anti-suffocation device. The anti-suffocation device shall operate freely when tested as specified in 4.8.2.10. There shall be no failure or damage of the anti-suffocation device or any of its components. 3.8.11 Chemical aqent permeati
45、on. The materials of the mask shall be resistant to liquid agent permeation with an end point of not less than 360 minutes when tested as specified in 4.8.2.11.1, 4.8.2.11.2 and 4.8.2.11.3. 3.8.12 Optical. The lens area of the facepiece shall meet the requi rements of MIL-V-43511 , Class I, except f
46、or the impact requirement , when tested as specified in 4.8.2.12. 3.8.13 Field of Vision. The unobstructed field of vision of the mask (without the helmet being worn) shall be: a. Vertical - 90“ without head rotation b. Horizontal - 160“ without head rotation, when tested as specified in 4.8.2.13. 3
47、.8.14 Cyclic Breathing. The mask shall show no damage or failure from the effects of cyclic breathing when tested as specified in 4.8.2.14. 3.8.15 Drinking. A drinking device for hot and cold liquids and liquid medication shall provide a flow of not less than one quart in 10 minutes. Drinking device
48、 preparation time shall be not more than two minutes and the start of water intake not more than 15 seconds when tested as specified in 4.8.2.15. 3.8.16 Flame and flash protection. The mask shall provide flame and flash protection so that not greater than 2 percent of the head and neck areas receive
49、 burns. The mask shall not melt and shall show minimal charring and shall be self extinguishing when tested as specified in 4.8.2.16. 3.8.17 Toxicity. All materials of components that come in contact with the skin shall not cause undue sensitization or primary irritation of the wearers skin. As specified in EPA 56016-82-001, objective evidence of the tests specifed in 3.8.17.1 thru 3.8.17.3 shall be submitted to substantiate t h i s requi remen t. 8 Provided
