1、! Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: US Army Tank-automotive and Armaments Command, ATTN: the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of th
2、is document, or by letter. AMSTA-TR-EBLUE, Warren, MI 48397-5000, by using pmq MIL-DTL-624 lSB(AT) 30 September 1998 SUPERSEDING 11 March 1996 MIL-PRF-624 1 SA(AT) DETAIL SPECIFICATION PUMP, SUBMERSIBLE, BILGE, ELECTRTC-MOTOR-DRIVEN This specification is approved for use by the US Army Tank-automoti
3、ve and Armaments Command, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a 24 volt electric-motor-driven, submersible bilge pump for moving water (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Gener
4、al. The documents listed in this section are specified in sections 3 and 4 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 completenes
5、s of this list, document users are cautioned that they must meet all specified requirement documents cited in sections 3 and 4 of this specification, whether or not they are listed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-DTL-624LSB 99999
6、06 2075642 032 2.2 Government documents. 2.2.1 SDecifications. standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the
7、Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). STANDARDS DEPARTMENT OF DEFENSE MIL-STD-202 MIL-STD-462 - Test Methods for Electronic and Electrical Component - Electromagnetic Interference Characteristics, Measurement
8、 Parts (See 4.3.1). of (See 4.3. i). (Unless otherwise indicated, copies of the above specifications, standards, and handbooks are available fi-om the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.2.2 Other Government documents. drawings. and
9、Dublications. The following other Government documents, drawhgs, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2). DRAWINGS ARMY 12369000 12292 104 - Chemical Agent Resistant Coatings (C
10、ARC) Paint Systems - Pump Unit, Submersible. Index. (Copies of these drawings are available from the U.S. Army Tank-automotive and Armaments Command, AMSTA-TR-E/BLUE, Warren, MI 48397-5000.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified
11、 herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.
12、2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-b2qLSB 999990b 2075643 T79 MIL-DTL-624 15B(AT) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B117 - Standard Practice for Operation of Salt Spray (Fog) Apparatus (DoD Adopted). (
13、Application for copies may be obtained from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes
14、 precedence. Nothing in this 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 Design and cons
15、truction. The pump shall be designed and constructed as specified in Drawing 12292104, and shall be in accordance with 3.2.1 and 3.2.1.1. 3.2.1 Electric motor. The pump shall have an enclosed waterproof electric motor which shall be rated at 28 volts direct current (Vdc). 3.2.1.1 Bearings. The motor
16、 shall have anti-friction, lubricated for life, sealed bearings, rated for continuous duty. 3.3 Materials. Materials used in the fabrication of the pump shall be as specified herein and in referenced drawings. When not thereby specified, the materials shall be in accordance with the manufacturers sp
17、ecifications for submersible pumps, as long as those materials are capable of meeting all the operating, support and ownership, and environmental requirements as specified herein. 3.3.1 Hazardous materials. Asbestos and cadmium materials shall not be used in any form in any part of the vehicle. No i
18、tem, part or assembly shall contain radioactive materials in which the specific activity is greater than 0.002 microcuries per gram or activity per item equals or exceeds 0.01 microcuries. 3 -3.2 Recycled. recovered, or environmentally preferable materials. Recycled, recovered, or environmentally pr
19、eferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
20、rom IHS-,-,-9999906 2075644 905 MIL-DTL-624 1 5B(AT) 3.4 Omrating reauirements. 3.4.1 Overall performance. When operated at 28 i 0.05 Vdc at any indicated head pressure, the pump output (flow) and current consumption shall be as specified in figure 1. 3.4.2 Water level. The pump shall start to deliv
21、er water when the depth of water is not more than 7.5 centimeters (cm) (3 inches (in.), above the pump mounting surface. The pump may stop delivering water when the depth of water is not more than 7 cm (2.75 in.), above the pump mounting surface. 3.4.3 Pumping capacity. The pump shall deliver not le
22、ss than 125 liters per minute (L/m) (33 gallon per minute (gdmin) against a 2.3 meter (m) (7.5 foot (fi) static pressure head through a 3.55 i 0.1 5 cm (1.40 Verific- ation 4.3.2 capabilitv. Apply a voltage in the range of 13.5 to 15 Vdc, applied at -1 OC (30 OF), to the pump electrical terminals. T
23、he pump shall start. 4.3.4.8 EM1 test. The pump shall be tested in accordance with MIL-STD-462, or equivalent (see 4.3.1), for the EM1 limits as specified in figures 2 and 3. 4.3.5 Support and ownership requirements verifications. 4.3.5.1 Steel corrosion resistance test. Actual pump components shall
24、 be subjected to the salt spray test specified by ASTM B117 for a minimum of 2 hours using a 5% salt solution. Prior to this test, the samples shall be immersed in a solution of nitric acid and sodium dichromate to dissolve surface contaminants resulting from fabrication processes such as machining.
25、 There shall be no evidence of corrosion. 4.3.5.2 Aluminum corrosion resistance test. Corrosion resistance of aluminum shall be determined on separate test panels 0.64 to 1.60 millimeters (mm) (0.025 to 0.63 in.) thick and not less than 76 x 254 111111 (3 x 10 in.) in width and length. The panels sh
26、all be subjected to no less than 336 hours of salt spray corrosion testing in accordance with ASTM B117, except that significant surface shall be inclined six degrees fFom vertical. There shall be no more than 15 scattered spots or pits, none larger than 0.8 mm (0.03 in.) diameter, on a total of 968
27、 square centimeters (cm2) (150 square inches (in2). There shall be no more than 5 scattered spots or pits, none larger than 0.8 mm (0.03 in.) diameter, on a total of 194 cm2 (30 in) of test area from one or more test pieces. 4.3.5.3 Endurance. The pump shall pump water containing sodium chloride, sa
28、nd and clay mixed in the following proportions and under the following conditions: a. Mix 95 parts (by volume) fiesh water and 5 parts sodium chloride. b. For each 189 liters (L) (50 gallon) of solution in a, add 2.3 kg (5 lb) of clay (Bentonite) and 0.9 kg (2 lb) of sand. The sand shall be 0.01 to
29、1.0 mm (0.0004 - 0.04 in.) in diameter with the majority of grains 0.15 to 0.30 111111 (0.006 - 0.012 in.) in diameter. c. Circulation and agitation shall be such that the sand and clay remain in suspension throughout the test. d. The test conditions shall be as specified in 4.3.4.3. 4.3.5.3.1 Proce
30、dure. The endurance test shall be performed as follows: a. Water, as specified in 4.3.5.3, shall be pumped for 6 hours at 2.3 m (7.5 fi) water head and a flow of not less than 125 L/m (33 gdmin). b. The pump shall rest for not less than 30 minutes. c. Three cycles shall be performed as follows: 11 P
31、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-DTL-624l15B D 06 2075652 TBL . MIL-DTL-6241 5B(AT) 1. Three hours of pumping, as specified in step a. 2. Twenty minutes of dry-run. 3. A rest of not less than 30 minutes. 4. Three hours of pumping,
32、as specified in step a. 5. A rest of not less than 30 minutes. d. The above steps (a through c) shall be performed four times. After the test, the pump capacity shall be determined in accordance with 4.3.4.3. The pump shall deliver not less than 113 L/m (30 gal/&). 4.3.6. ODerating environment reaui
33、rements tests. 4.3.6.1 High temDerature. The pump shall be tested as specified in 4.3.4.3 a, b, and d, except that the pump and the water shall attain a temperature of 7 1 “F (1 85“F), and then shall be stabilized at 65 k 3C (149 t 5F). At the stabilized temperature, the pump shall be subjected to a
34、nd pass the test as specified in 4.3.4.3, a, b, and d. 4.3.6.2 Low temDerature. The pump shall be tested as specified in 4.3.4.3 a, b, and d, except that the pump and the water shall attain a temperature of -54 & 3C (-65 5 5F): The pump and water shail then be stabilized at 2 k 2C (36 2 4F) and shal
35、l be subjected to and pass the test as specified in 4.3.4.3, a, b, and d. 4.3.6.3 Shock. The pump shall be mounted in a position to simulate its actual use and three shocks in each direction shall be applied along its three mutually perpendicular axis (total of 18 shocks). The shock pulse shape and
36、duration shall be as specified in figure 4. Mer the test, the pump shall be subjected to and pass the test as specified in 4.3.4.3. 4.3.6.4 Vibration. The pump shall be mounted in a manner that will simulate its actual use, and shall be vibrated along each axis in accordance with the vibration level
37、s specified in figure 5. The sweep time shall be 15 minutes for the sweep fiequency range of 5 to 500 to 5 Hz. The cycling time shall not exceed 3 hours in each axis. The fiequency of applied vibration shall be swept over the specified range logarithmically in accordance with figure 6. The specified
38、 sweep time is that of an ascending plus a descending sweep and is twice the ascending sweep time shown on figure 6 for the specified range. when the pump resonances below 5 Hz are measured, the test curve shall be extended to 2 Hz and the sweep time shall be 18 minutes (2 to 500 to 2 Hz). There sha
39、ll be no operational tests required during vibration. There shall be no evidence of deformation, cracking, or breaking. After the test, the pump shall be subjected to and pass the test as specified in 4.3.4.3. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
40、om IHS-,-,-MIL-DTL-bZ415B = 9999906 2075653 91d W 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD personnel, these personnel need to contact the resp
41、onsible packaging activity to ascertain requisite packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Military Department or Defense Agency, or within the Military Departments System Command. Packaging data retrieval is availabl
42、e from the managing Military Depariments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory nature which may be helpful, but is not mandatory.) 6.1 Intended use. T
43、he pump covered by this specification is intended to expel water and contaminants (sea water, fuels, and lubrications) from the hulls of combat vehicles. The pump unit is military unique because it must meet with all the military CARC coating procedures described in the referenced Army Drawing 12369
44、000. 6.2 Acquisition requirements. Acquisition documents must supply the following: a. b. C. d. e. f. g. h. 1. j. k. Title, number, and date of the specification. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1.1 , 2.2.
45、2, and 2.3). If first article inspection is required (see 3.1). If finish should be other than specified (see 3.6.3). If identification marking should be other than as specified (see 3.6.4). If first article verifications are other than as specified (see 4.1 .i). If preproduction test is specified (
46、see 4.1.1.1). If initiai production inspection is other than as specified (see 4.1.1.2). If conformance inspection is other than as specified (see 4.1.2). Specification of conformance inspection sampling plan (see 4.1.2). Packaging requirements (see 5.1). 6.3 First article. When requiring a first ar
47、ticle inspection, contracting documents should provide specific guidance to offerors. This guidance should cover whether the first article is a first article sample, a first production item, or the number of test items. These documents should also include specific instructions regarding arrangements
48、 for examinations, approval of first article test results, and disposition of first articles. Pre-solicitation documents should provide Government waiver rights for samples for first article inspection to bidders offering a previously 13 Provided by IHSNot for ResaleNo reproduction or networking per
49、mitted without license from IHS-,-,-MIL-DTL-624L5B 9999906 2075654 854 MIL-DTL-6241 5B(AT) acquired or tested product. Bidders offering such products who wish to rely on such production testing must furnish evidence with the bid that prior Government approval is appropriate for the pending contract. 6.4 Conformance insDection. Affordable conformance inspection with confidence varies depending upon a number of procurement risk factors. Some of
