1、MIL-D-52923B (ME) 13 March 1985 SUPERSEDING MIL-D-52923A(ME) 28 October 1981 MILITARY SPECIFICATION DISTRIBUTOR, WATER, SEMITRAILER MOUNTED, 6000 GALLON This specification is approved for use by the USA Belvoir Research and Development Center, Department of the Army, and is available for use by all
2、Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a semitrailer mounted, 6000 gallon water distributor. 2. APPLICABLE DOCUMENTS I 2.1 Government document s. I 2.1.1 Specifications and standards. Unless otherwise specified (see 6.2), the following sp
3、ecifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DODISSI specified in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATION FEDERAL ZZ-H-4 5 1 MILITARY MIL-P-514 - Hose, Fire,
4、Woven-Jacketed, Rubber- or Cambric-Lined, with Couplings. - Plates, Identification, Instruction and Marking, Blank. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: USA Belvoir Research and Devel
5、opment Center, ATTN: STRBE-DS, Fort Belvoir, VA 22060-5606 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 3825 -r THIS DOCUMENT CONTAINS 54 PAGES Provided by IHSNot for ResaleNo reproduction or networki
6、ng permitted without license from IHS-,-,-MIL-D-52923B 38 9799906 0221337 5 W t MIL-D-52923B(ME) MIL-T-704 - Treatment and Painting of Materiel. MIL-D-7 71 - Distributor, Bitumen and Water, Packaging of. MIL-L-2104 MIL-L-2105 MIL-F-3541 MIL-G-3859 MIL-G-109 24 MIL-V-167 21 MIL-G-20241 MIL-P-233 77 M
7、IL-T-46786 MIL-S-81733 STANDARDS FEDERAL FED-STD-H28 MILITARY MIL-STD-209 MIL-STD-889 MIL-STD-141 O MIL- STD-14 74 MS27029 MS75021 1 - Lubricating Oil, Internal Combustion Engine, - Lubricating Oil, Gear, Multipurpose. - Fittings, Lubrication. - Grease Guns, Hand-Operated, Lever, Push - Grease, Auto
8、motive and Artillery. - Valves, Foot, Low Pressure (for Water), - Gasket Material, Wool Felt, Impregnated, - Primer Coatings : Epoxy-Polyamide, Chemical - Tanks, Fuel, Engine: General Requirements - Sealing and Coating Compound, Corrosion Tactical Service. and Screw Type. Adhesive, Pressure-Sensitiv
9、e. and Solvent Resistant. for. Inhibitive. - Screw Thread Standards for Federal Services. - Slinging and Tiedown Provision for Lifting and Tying Down Military Equipment. - Dissimilar Metals. - Methods for Selection of Industrial Engines - Noise Limits for Army Material. - Coupling Half, Quick Discon
10、nect, Cam however, thick- ness shall in no case be less then 0.1644 inch (8 gage). the heads shall not be less than 0.1644 inch (8 gage). The heads shall be concave, convex, or reinforced flat plates and all seams shall be welded and watertight. Each tank shall have transverse surge plates made of n
11、ot less than 0.1345 inch (10 gage) sheet steel. The spacing between surge plates and between surge plates and tank ends shall be reinforced to withstand the surge pressure; and shall permit free flow of water at the bottom, venting at the top, and access to all sections of the tank. Holes in the sur
12、ge plates shall be staggered. The tank shall be provided with a manhole not less than 20 inches in diameter. The manhole shall be located at the top of the tank and shall be equipped with a hinged, watertight, quick-clamp-type cover. The low water level indicator mechanism shall be protected from pe
13、rsonnel entering and exiting the tank through the manhole. from the ground to the manhole. with non-skid decking surfaces, and be equipped with handholds that permit use of arctic mittens. A 3-inch unrestricted opening for overflow and for venting to the atmosphere at all times shall be provided and
14、 shall be protected against surge discharge. The 3-inch opening shall be located not more than 2 feet from the transverse centerline of the tank. The tank capacity shall be not less than 6,000 gallons. which might leak out or disintegrate and cause the water to become toxic. The material shall have
15、no adverse affect on the health of personnel when used for its intended purpose. The interior sur- The manufacturer shall provide a steel sheet thickness for Sheet steel used in A ladder or rungs shall be provided on the tank for access All operator access areas shall be equipped The finished tank s
16、hall contain no materials nor substances 3.7 Spray system. The spray system shall consist of, but not be limited to, a self-priming centrifugal pump driven by a liquid cooled diesel engine and necessary piping and controls to permit the distributor to function as specified herein. 7 Provided by IHSN
17、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-52723B 38 W 7977906 0223343 O MIL-D-5 29 23B (M ) e 3.7.1 Pump. A centrifugal pump which is self-priming after initial filling shall be provided. foot static suction lift, and when operating with the suction and
18、discharge ports provided, the pump shall deliver water at a rate of not less than 600 gallons per minute. When operating against a total head of 125 feet and 10 foot static suction lift and when operating with the suction and discharge ports provided the pump shall deliver water at a rate of not les
19、s than 200 gallons per minute. The horsepower demand of the pump under the above conditions shall not exceed the intermittent horsepower rating of the engine. The pump assembly shall operate for not less than 100 hours without a failure when operated as follows : When operating against a total head
20、of 90 feet and with a 10 a. b. At maximum pump capacity if the continuous horsepower rating of the b At a capacity commensurate with the continuous horsepower rating of the engine. engine exceeds the maximum power required by the pump. 3.7.2 Diesel engine. For the purpose of selecting the engine, th
21、e water distributor shall be classified as a class III end item in accordance with MIL-STD-1410. The engine, including all systems, components and accessories, shall conform to MIL-STD-1410, unless otherwise specified herein. The engine shall be liquid cooled. All engine accessories shall be furnish
22、ed by or approved by the engine manufacturer for this application. The engine shall be capable of operating on fuels and lubricating oils as specified in MIL-STD-1410. The engine shall comply with the Environmental Protection Agency and the California Air Resources Board regulations governing contro
23、l of air pollution for new motor vehicles and new motor vehicle engines, in effect for this type of equipment on date of manufacture. operational requirements and conditions specified in table I of MIL-STD-1410, or the engine manufacturers recommended operating limits. furnished as a complete power
24、unit, including housing, instruments, instrument panel, controls, battery and battery box. Exhaust gas or discharges from the engine shall be directed so that they do not endanger personnel. All hot surfaces of the engine, including exhaust pipes, exposed to contact by personnel or which create a fi
25、re hazard, shall be guarded or insulated. The engine shall meet all The engine shall be 3.7.2.1 Engine air induction system. The air induction system shall include a heavy-duty, dry type air cleaner and an air cleaner restriction indicator in acc-ordance with MIL-STD-1410. 3.7.2.2 Cranking and charg
26、ing system. The engine shall be furnished with a 12-volt electric cranking and charging system in accordance with MIL-STD-1410. The battery charging alternator shall be self-regulated, heavy-duty and shall have a capacity of not less than 25 amperes. The battery shall be size 6-TM. An ammeter shall
27、be mounted on the engine instrument panel. 3.7.2.3 Engine safety controls. Engine control systems, of the engine shut-off type, shall be furnished in accordance with MIL-STD-1410 as follows: a. High coolant temperature. b. Low lubricating oil pressure. 8 Provided by IHSNot for ResaleNo reproduction
28、or networking permitted without license from IHS-,-,-MIL-D-52723B 38 m 777770b 0223344 2 m 3.7.2.4 Manual throttle control. A manual throttle control shall be furnished in accordance with MIL-STD-1410 and shall be mounted on the instrument panel. 3.7.2.5 Fuel tank. A fuel tank with a capacity of not
29、 less than 12 gallons shall be provided. The fuel tank shall conform to MIL-T-46786, type III, except that the tank shall be exempt from the fire test. The fuel tank shall be located in a manner which will not allow spills or overflows to run onto the engine, exhaust, or electrical equipment. Adequa
30、te shielding may be provided to attain the same purpose. inch letters in a conspicuous location near the fuel tank opening. The lettering “Diesel Fuel“ shall be stenciled in one 3.7.2.6 Muffler. The engine shall be equipped with a muffler to reduce the noise level emitted by the engine. a self-openi
31、ng and closing rain cap. Vertical exhaust pipe shall be equipped with 3.7.3 Piping. Two adjustable nonferrous or noncorrosive spray nozzle shall be provided and shall be mounted on the rear of the distributor. Each nozzle shall be independently controlled (on-off) from the remote control box, and fr
32、om the rear platform. Each nozzle shall be manually adjustable. Nozzle adjustment shall permit an overlapping fan-like spray pattern covering a swath of at least 70 feet (not less than 35 feet to either side of the distributor longitudinal centerline). feet (not less than 15 feet to either side of a
33、 line through the center of each nozzle parallel to the longitudinal centerline of the distributor). shall be mechanically/spring closed and independently opened with compressed air. The piping shall be sized and designed to permit pumping at a rate of not less than 600 gallons per minute. An operat
34、ing instruction plate shall be provided describing step-by-step procedures required to perform all operations specified herein and shall include a flow and valve diagram. The plate shall be permanently affixed to the distributor. The plate shall conform to MIL-P-514, type III, composition C, photose
35、nsitive anodized aluminum. The materials and treatment used on surfaces in contact with water shall be nontoxic to the health of personnel when the distributor is used to transport potable water. Single nozzle operation shall permit covering a swath up to 30 Each nozzle 3.1.4 Spray accessories. The
36、distributor shall be provided with the following: a. Two 15-foot sections of suction hose 4-inches in diameter. Provisions shall be made to connect the sections to each other by use of quick-disconnect couplings. A foot valve in accordance with MIL-V-16721 Permanently mounted storage rackCs) shall b
37、e provided on the distributor to accommodate the two 15-foot sections of suction hose. The storage rack(s) shall prevent dirt and mud thrown by the tires of the towing unit from entering the suction hoses, or dust plugs shall be provided. When dust plugs are provided they shall be in accordance with
38、 MS27029-18 and they shall be chain secured fo the suction hoses. . shall be provided for use with the suction hose. b. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-52923B 38 m 7999906 022L3Y5 4 m c. A 4-inch quick-disconnect coupling prov
39、ided on the suction side of the pump to which the suction hose can be connected, A chain secured dust cap shall be provided. standing on the ground. d. A fire hose in accordance with ZZ-1-451 The hose shall be not less than 50 feet in length. Fittings shall be provided to connect the hose to the 1-1
40、/2 inch outlet (see 3.4.23). e. A fire hose nozzle (with on/off control) compatible with the hose fittings shall be provided. f. A removable, galvanized, inlet screen to protect the pump from particles greater than 1/8 inch during tank loading. g. All necessary valving, fittings, and dust caps shall
41、 be provided. Means shall be provided to store the accessories on the distributor. Each accessory shall remain in its place during any operation specified herein. h. Instructions for water distribution rates shall be provided with each distributor. The instructions shall be encased in waterproof lam
42、inated plastic. The instructions shall provide the operator with the water distribution rate in gallons per 100 foot length pattern, correlated to the following variables: The couplings shall be accessible to an operator (1) First and second tractor transmission geared speeds at 100 percent and 50 p
43、ercent governed engine rpm. (2) Water pump speeds of 100 percent and 50 percent of engine governed rpm . (3) Per nozzle at maximum opening size, using 1 and 2 nozzles. The distribution rate chart shall be within 15 percent of actual or measured rate for each variable, 3.7.5 Remote control. The distr
44、ibutor controls shall be incorporated in a common panel. cable adequately supported and of sufficient length to permit temporary placement of the panel in the cab of the towing vehicle and permit normal distributor operations, including right and left jack-knifes up to 90 degrees. The remote control
45、 cable shall be located in a protected location and shall be supported with cushioned clamps through the semitrailer length at intervals of not more than 3 feet. All jacketed cable components such as pneumatic lines, fittings, electric cable, connectors, etc., shall be suitable for use over a temper
46、ature range of -40“ to +200“ F. Pneumatic lines shall be inaccordance with SAE 51402. Pneumatic lines shall be provided with spring guards or similar devices to reduce tendency of lines to crimp or collapse at line fittings. The controls shall permit independent on-off operation of each spray nozzle
47、 valve. Control of the nozzle valves and engine throttle control shall be accomplished by air pressure derived from the truck-tractor air supply. The panel shall contain an engine tachometer, a distributor tank low water level indicator light, and controls to allow pump engine start up, shutdown and
48、 increase and decrease in engine rpms. The low water level indicator light shall indicate when the water level in the tank is 500 gallons or lower. Each control shall be clearly and permanently identified. Self-adhering tape for identification is not permitted. The panel shall be connected to the se
49、mitrailer with a jacketed Means shall be provided to store the remote control on the 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-52923B 38 m 9979906 0221346 b m distributor when not in use. A bracket shall be provided to firmly mount the panel in the truck-tractor. removal of the panel. the panel and bracket shall be provided with each distributor. The bracket shall permit quick installation and All necessary hardware an
