1、 Comments, suggestions, or questions on this document should be addressed to U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact i
2、nformation can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 4210 METRIC MIL-DTL-62547D (AT) 15 September 2010 SUPERSEDING MIL-DTL-62547C (AT) 30 September 1998 DETAIL SPECIFICATION VALVE AND CYLIN
3、DER ASSEMBLIES, HALON 1301 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers three classes of fixed fire extinguishers, referred to herein as “extinguishers”, “valve and cylinder assemblies” and “assembl
4、ies”, and an electrically and manually actuated discharge valve, referred to herein as “discharge valve” and “valve”. These items are used with bromotrifluoromethane (Halon 1301) fire extinguishing systems in military vehicles (see 6.1 and 6.2). 1.2 Classification. The extinguishers will be of the f
5、ollowing classes, as specified (see 6.2): Class 1 - A valve and cylinder assembly containing 2.27 kilograms (kg) 5 pounds (lb) of Halon 1301 in a 2360 cubic centimeter (cm3) 144 cubic inch (in.3) receiver cylinder Class 2 - A valve and cylinder assembly containing 3.18 kg (7 lb) of Halon 1301 in a 3
6、340 cm3 (204 in.3) receiver cylinder Class 3 - A valve and cylinder assembly containing 4.54 kg (10 lb) of Halon 1301 in a 4720 cm3 (288 in.3) receiver cylinder 1.3 Part identification number (PIN). The pin to be used for valves acquired to this specification are created as follows: Provided by IHSN
7、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62547D 2 M 62547 - X Class (see 1.2) 1 = Class 1 2 = Class 2 3 = Class 3 Specification number Designate detail number 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in s
8、ections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they m
9、ust meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the ex
10、tent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). FEDERAL STANDARDS FED-STD-595/11136 - Insignia Red FED-STD-595/11105 - OSHA Safety Red COMMERCIAL ITEM DESCRIPTIONS A-A-59503 - Nitrogen, Technical DEPARTMENT O
11、F DEFENSE SPECIFICATIONS MIL-DTL-7905 - Cylinder, Steel, Compressed Gas, Non-Shatterable, Seamless, 1800 PSI and 2100 PSI DEPARTMENT OF DEFENSE STANDARDS MIL-STD-101 - Color Code for Pipelines and for Compressed Gas Cylinders Provided by IHSNot for ResaleNo reproduction or networking permitted witho
12、ut license from IHS-,-,-MIL-DTL-62547D 3 MIL-STD-130 - Identification Marking of US Military Property MIL-STD-171 - Finishing of Metal and Wood Surfaces MIL-STD-810 - Environmental Test Methods and Engineering Guidelines MS3470 - Connectors, Receptacle, Electric, Series 2, Crimp Type, Narrow Flange
13、Mount, Bayonet Coupling, Classes A, L, S and W MS28889 - Valve, Air, High Pressure Charging, 5000 PSI (Copies of these documents from Document Automation and Production Service, Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094 or website: https:/assist.daps.dla.mil/quicksearch/.) 2.2.2
14、Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2
15、). CODE OF FEDERAL REGULATIONS (CFR) 40CFR1500 thru 1508 - National Environmental Policy Act 40CFR702 thru 775 - Toxic Substances Control Act 49CFR178 - Specifications for Packagings (Copies of these documents are available from www.gpoaccess.gov/cfr/index.html or U.S. Government Printing Office, P.
16、O. Box 979050, St. Louis, MO 63197-9000.) U.S. ARMY TACOM DRAWINGS 12273264 - Receiver Bottle 12288691 - Safety Pin Assembly 12288692 - Pin, Safety 12295272 - Cylinder, Compressed Gas 12314504 - Plate, Caution 12314510 - Pressure Gauge, 0-1500 PSIG, Temperature Compensated/Coordinated 12314511 - Rec
17、eiver Bottle 12343133 - Plug and Pin Assembly 12343134 - Plug, Anti-Recoil. 12343165 - Pin, Safety 12370460 - Valve and Bottle Assembly 12370477 - Valve Assembly 12376271 - Tag, Record 2588282 - Tag, Marker 5704998 - Repair Kit, Fire Extinguisher Valve Assembly Provided by IHSNot for ResaleNo reprod
18、uction or networking permitted without license from IHS-,-,-MIL-DTL-62547D 4 (Copies of these documents are available from DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, War
19、ren, MI 48397-5000.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). ASTM INTERNATIONAL ASTM D5632 - Standard Spe
20、cification for Halon 1301, Monobromotrifluoromethane (CF3Br) ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi (Copies of these documents are available from www.astm.org or ASTM International, P.O. Box C700, West Conshohocken, PA 19428-2959.) INSTITUTE
21、 OF ENVIRONMENTAL SCIENCES AND TECHNOLOGY (IEST) IEST-STD-CC1246 - Product Cleanliness Levels and Contamination Control Program. (Copies of this document may be purchased from the IEST - Institute of Environmental Sciences and Technology, Arlington Place One, 2340 South Arlington Heights Road, Suite
22、 100, Arlington Heights, IL 60005-4516 or website: http:/www.iest.org/) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this
23、 document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.1.1. 3.2 Materials. Materials shall be as specified
24、herein and as specified in referenced specifications, standards and drawings. There shall be no adverse corrosion effects on materials or protective coatings from Halon 1301 and the minute quantities of water present in Halon 1301, nitrogen and ambient air. Materials, including elastomeric compounds
25、, shall be suitable for use over an ambient temperature range of minus (-) 51 to 71 degrees Celsius (C) -60 to 160 degrees Fahrenheit (F) without any temporary or permanent dimensional changes that Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
26、DTL-62547D 5 could result in leakage at any temperature or over any thermal gradient within the temperature range specified. Static and dynamic seals, including gland design and mating sliding surfaces material selection, shall result in minimum dynamic seal(s) friction, negligible breakout friction
27、al forces after short term or prolonged inoperation and zero stickslip characteristics of moving or sliding parts during the discharge valve opening process. Silicone seals shall not be used. Erosion of materials due to liquid and vapor flow shall be negligible and shall not wear through any protect
28、ive or antifriction finish or coating. Elastomers which swell or contract when in contact with Halon 1301 shall not result in leakage or hinder operation at any ambient temperature or thermal gradient. Plastics that swell when in contact with Halon 1301, such as ethyl cellulose or cellulose acetate/
29、butyrate, shall not be used. Materials that are soluble in Halon 1301 shall not be used (see 4.4.1). 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the mater
30、ial meets or exceeds the operational and maintenance requirements and promotes economically advantageous life cycle costs (see 4.4.1). 3.2.2 Dissimilar metals. Contact between dissimilar metal parts within or anywhere on the extinguisher, which could encourage galvanic action, shall be avoided. Sepa
31、ration of dissimilar metals shall be accomplished by providing approved protective finishes, coatings or insulation between the mating materials and shall be in accordance with provision of MIL-STD-171, or equivalent, which address reduction of corrosion at intermetallic contact points. Corrosion-re
32、sistant materials shall be used whenever possible (see 4.4.1). 3.2.3 Environmental quality (see 4.4.1): a. The extinguisher shall have a Categorical Exclusion under Section 1508.4 of Title 40 CFR, Parts 1500-1508 by the Council of Environmental Quality. b. The extinguisher shall meet the requirement
33、s of Title 40 CFR, Subchapter R, Toxic Substance Control Act, Parts 702-775. 3.2.4 Extinguishing agent. The fire extinguishing agent, charged into the extinguisher, shall be bromotrifluoromethane (CBrF3, Halon 1301) conforming to ASTM D5632, or equivalent (see 4.4.1). 3.2.5 Nitrogen. The nitrogen us
34、ed to superpressurize the extinguisher, after charging with Halon 1301, shall conform to A-A-59503, grade B, type I, class 1, or equivalent (see 4.4.1). 3.3 Design and construction. 3.3.1 Discharge valve. The discharge valve shall be designed to safely contain, and to electrically or manually discha
35、rge liquid and vaporous Halon 1301, which has been superpressurized with dry nitrogen to 5170 kilopascals (kPa) 750 pounds per square inch (psi) at 21 C (70 F). It shall be designed for rapid opening and a high rate of expulsion (see 4.4.1). Provided by IHSNot for ResaleNo reproduction or networking
36、 permitted without license from IHS-,-,-MIL-DTL-62547D 6 3.3.1.1 Configuration. The valve shall conform to the physical and dimensional requirements of Drawing 12370477. The discharge valve shall include a fill valve, an inlet and an outlet port, an inlet port vent, a safety relief device, a pressur
37、e gage, an extinguisher availability (charge and flow condition) signal device(s) and a standard electrical connector receptacle (see 4.4.1). 3.3.1.1.1 Fill valve. The fill valve for charging both Halon 1301 and nitrogen shall conform to MS28889-2, or equivalent (see 4.4.1). 3.3.1.1.2 Inlet port. Th
38、e inlet port shall be externally threaded, and as specified on Drawing 12370477 (see 4.4.1). 3.3.1.1.2.1 Inlet port vent. The inlet port threaded connection shall incorporate a means to vent pressure within the extinguisher during valve removal. The vent shall be in accordance with Drawing 12370477.
39、 The venting shall occur while no less than four threads remain engaged (see 4.4.1). 3.3.1.1.3 Outlet port. The outlet port shall be internally threaded, and as specified on Drawing 12370477 (see 4.4.1). 3.3.1.1.4 Safety relief. The safety relief device shall be as specified on Drawing 12370477 (see
40、 4.4.1). 3.3.1.1.5 Pressure gage. The pressure gage shall be a go-no-go temperature compensated/coordinated device conforming to Drawing 12314510 (see 3.4.1.4.2 and 4.4.1). 3.3.1.1.6 Availability signal. The availability signal device(s) shall inform the fire extinguishing system logic as to the ava
41、ilability of the extinguisher to be fired. The device(s) shall be wired in a circuit between connector receptacle pins (see 3.3.1.1.9.1) in accordance with table I and shall indicate whether extinguishant pressure is adequate and whether flow has been initiated (see 4.4.1). 3.3.1.1.7 Pressure signal
42、. The pressure signal shall be provided by a pressure switch which, normally, shall be open at ambient pressure. The switch shall close during extinguisher charging and open when the extinguishant pressure has dropped as described in 3.4.1.4.3 (see 4.4.1). 3.3.1.1.8 Flow signal. The flow signal shal
43、l be provided by a normally closed switch which shall open within 5 milliseconds (ms) from the time of valve opening or the start of Halon 1301 flow. The switch shall remain open until it is reset (manually, automatically, or by the extinguisher recharging). The switch shall remain open until the ex
44、tinguishant pressure is below the pressure switch setting, when it may reset (see 4.4.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62547D 7 3.3.1.1.9 Electrical. 3.3.1.1.9.1 Connector receptacle. Electrical interface shall be through a
45、 MS3112 E14-5PN or MS3470 W14-5PN connector receptacle, or equivalent, as specified on Drawing 12370477. Pin assignments shall be as shown in table I (see 4.4.1). TABLE I. Availability signals and connector pin assignments. Pin Function In/Out Signal Duration A ACTIVATION SIGNAL AND CONTINUOUS CONTI
46、NUITY MONITOR IN 16 Vdc minimum 30 Vdc maximum 10 A maximum for solenoid load impedance 0.9 ohms 1/ Quiescent condition: 5mA maximum 33 to 38 ms Continuous B RETURN C PRESSURE/FLOW MONITOR IN High pressure and no flow-short to pin B Low pressure or flow-open circuit to pin B Continuous D UNUSED E UN
47、USED 1/ Less than or equal to (). 3.3.1.1.9.2 Polarity. The valve shall operate with a negatively grounded, two wire direct current, electrical circuit (see 4.4.1). 3.3.1.1.9.3 Activation signal. The valve shall discharge upon receipt of a signal as specified in table I. The valve shall not be damag
48、ed by input currents up to 30 ampere (A) for a duration of 8020 ms (see 4.4.1). 3.3.2 Extinguisher. Each extinguisher shall consist of a valve (see 3.3.1), and a non-shatterable receiver bottle, filled with liquid and vaporous Halon 1301 and superpressurized to 5170 kPa (750 psi) at 21 C (70 F) with
49、 dry nitrogen. The extinguisher shall be designed for vehicle use mounted in a vertical position with the valve down (see 4.4.1). 3.3.2.1 Configuration. The extinguisher shall conform to the physical and dimensional requirements of Drawing 12370460. The extinguisher shall be complete with an outlet port anti-recoil plug and a manual release lock. The receiver cylinder shall conform to the ap
