1、Comments, suggestions, or questions on this document should be addressed to the Commander, U.S. Army Tank-Automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS, MS-268, Warren, MI 48397-5000 or emailed to usarmy.detroit.rdecom.mail.tardec-standardizationmail.mil. Since contact information can c
2、hange, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil/. AMSC N/A FSC 3835 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. INCH-POUND MIL-PRF-32233A 11 September 2012 SUPERSEDING MIL-PRF-32233
3、 20 December 2006 PERFORMANCE SPECIFICATION TANKS, COLLAPSIBLE, 3,000, 10,000, 20,000, 50,000, For Posts, Camps and Stations A-A-59326 - Coupling Halves, Quick-Disconnect, Cam-Locking Type General Specification For (Unless otherwise indicated, copies of federal and military specifications, standards
4、, and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins, Philadelphia, PA 19111-5094, or at https:/assist.dla.mil/.) DEPARTMENT OF DEFENSE ATPD-2262 - Berm Liner Assemblies ATPD-2263 - Repair Kit and Repair Kit Components for Collapsible Fabric Tanks and
5、 Drums (Unless otherwise indicated, copies of the above ATPDs are available from the office of the Contracting Officer or can be requested at usarmy.detroit.rdecom.mbx.tardec-standardizationmail.mil.) MIL-DTL-83133 - Turbine Fuel, Aviation, Kerosene Types, NATO F-34 (JP-8) and NATO F-35, JP-8+100 MI
6、L-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-PRF-370 - Performance Specification, Hose and Hose Assemblies, Nonmetallic: Elastomeric, Liquid Fuel MIL-STD-810 - Department of Defense Test Method Standard for Environmental Engineering Considerations and Laboratory Tests MIL-STD-130 -
7、Department of Defense Standard Practice Identification Marking of U.S. Military Property (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins, Philadelphia, PA 19111-
8、5094, or at https:/assist.dla.mil/quicksearch/.). 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 the documents which are DoD adopted are those listed in the issue of the DoDISS cited in t
9、he solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) AATCC 111 - Weather Resistance of Textiles: Exposure to Daylight and Weath
10、er Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32233A 3 (Application for copies should be addressed to the American Association of Textile Chemists and Colorists, 1 Davis Drive, P.O. Box 12215, Research Triangle Park, NC 27709-2215, or at
11、 http:/www.aatcc.org/testing/methods/topical.htm) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 381 - Standard Test Method for Gum Content in Fuels by Jet Evaporation JP Designation ASTM D 412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers Tension ASTM D 413 -
12、Standard Test Methods for Rubber Property Adhesion to Flexible Substrate ASTM D 429 - Standard Test Methods for Rubber Property - Adhesion to Rigid Substrates (DoD Adopted) ASTM D 471 - Standard Test Method for Rubber Property Effect of Liquids ASTM D 750 - Standard Test Method for Rubber Deteriorat
13、ion in Carbon Arc Weathering Apparatus. ASTM D 751 - Standard Test Methods for Coated Fabrics ASTM D 910 - Standard Specification for Aviation Gasolines ASTM D 1149 - Standard Test Method for Rubber Deterioration - Surface Ozone Cracking in a Chamber ASTM D 1655 - Standard Specification for Aviation
14、 Turbine Fuels ASTM D 5035 - Standard Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method) ASTM D 4814 - Standard Specification for Automotive Spark-Ignition Engine Fuel ASTM G 155 - Standard Practice for Operating Xenon Arc Light Apparatus for Exposure on Non-Metallic Mat
15、erials (Application for copies can be obtained from the American Society for Testing and Materials, 100 Barr Harbor Drive, P.O. Box C700 West Conshohocken, PA 19428-2959, or at www.astm.org.) 2.4 Order of Precedence. Unless otherwise noted herein or in the contract, in the event of a conflict betwee
16、n the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Description. The tank assembly shall consist of a
17、collapsible tank with attached handles and fittings, accessories, berm liner, emergency and long-term repair kits, hose support pads, and tank chest, unless otherwise specified (see 6.2). The tank assembly shall be for storage of military specification fuels in accordance with 3.3.3. 3.2 First Artic
18、le. When specified (see 6.2), a tank assembly (or assemblies) shall be subjected to first article inspection in accordance with 4.2. 3.3 Materials. The manufacturer shall verify that the materials used meet all of the operational and environmental requirements specified. The contractor shall verify
19、that properties of all fabrics used during manufacture of tank assembly lots are identical to properties of fabrics used in tank assemblies provided Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32233A 4 during first article tests. Any chan
20、ges require an Engineering Change Proposal (ECP). The tank assembly shall be newly fabricated from recovered materials to the maximum extent practicable, provided the components meet all other requirements of this specification. The materials shall be of sufficient durability to meet all the require
21、ments as specified herein. No material shall have an adverse effect on the health of personnel when used for its intended purposes. 3.3.1 Deterioration Prevention and Control. The tank assembly shall be fabricated from compatible materials, inherently corrosion resistant, or treated to provide prote
22、ction against various forms of corrosion or deterioration to which they are susceptible. 3.3.2 Recycled, Recovered, or Environmentally Preferable Materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the materials meet or
23、exceed the operational and maintenance requirements and promote economically advantageous life cycle costs. Used, rebuilt, or remanufactured components shall not be permitted. 3.3.3 Fuel compatibility. The contractor shall certify that each tank assembly is compatible for service with all of the fue
24、ls listed below. In this context, compatibility means that the tank assemblies and fabric samples meet the requirements of Tables I 4-inch fittings shall be rated at 600 GPM; and 6-inch fittings shall be rated at 1200 GPM. 3.4.3.2 Drain fittings. For Sizes II through V, the tank shall be provided wi
25、th a means to drain sediment, water and residual fuel. The quantity required and location for the drain fittings shall be as shown in FIGURES A1, A2, and A3. The draining capability shall interface with the drain hose accessory noted in 3.7. The drain fittings shall have a minimum 2-inch ID. The dra
26、in assembly shall not be a threaded type fitting. Each drain shall come with an installed blind flange on the drain for quick deployment where drains are not required or desired. Each collapsible tank shall be equipped with spare drain gaskets. 3.4.3.3 Vent Fitting. The tank vent shall be of a passi
27、ve type design and ensure complete venting of fuel vapor in the tank and located in accordance with FIGURES A1, A2, and A3. The weight of the vent shall minimize the accumulation of water on top of the tank. The vent shall provide vapor pressure relief, be fitted with a flame arrestor, and provide p
28、rotection against water or airborne contamination of the stored fuel. 3.4.4 Maximum Tank Dimensions. The new, untested, empty tank shall not exceed the following dimensions: Size I: 14 feet x 14 feet Size II: 22 feet x 22 feet Size III: 30 feet x 30 feet Size IV allow to stand for 8 hours 2) Drain b
29、ladder to 40% capacity; allow to stand for 1 hour 3) Fill bladder to full capacity +10%; allow to stand for 8 hours 4) Drain bladder to 40% capacity; allow to stand for 1 hour 5) Fill bladder to full capacity +10%; allow to stand for 8 hours 6) Drain completely; fold to original configuration; allow
30、 to sit for 48 hours 7) Unfold completely; fill bladder to full capacity +10%; allow to stand for 8 hours 8) Drain bladder to 40% capacity; allow to stand for 1 hour 9) Fill bladder to full capacity +10%; allow to stand for 8 hours 10) Drain completely 4.5.2 Tank Fabric Sample Tests. Provided by IHS
31、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32233A 16 4.5.2.1 Fuel Extraction. Fabric samples for conducting the Ozone Resistance (see 4.5.2.2) test and Weather Resistance (see 4.5.2.3) test shall be prepared using the following procedures: 1) Immerse s
32、eparate samples in each fuel identified in 3.3.3 (except for Automotive Spark-Ignition Engine Fuel) for 7 days at 160F 2) Remove the specimens from the fuel, blot with paper towels, and allow to dry in an air circulating hood for at least 24 hours. 3) Place samples in a vacuum oven and dry for 16 2
33、hours at 120F at 20 inches of mercury 4.5.2.2 Ozone Resistance. Ozone resistance after fuel extraction and drying shall be tested as specified in ASTM D 1149, Test Method A. The samples shall be conditioned for 14 days at a temperature of 104 4F in air having a partial pressure of ozone of 50 millip
34、ascals. Fuel extraction shall be IAW 4.5.2.1. Nonconformance to TABLE I requirements shall constitute failure of the test. 4.5.2.3 Weather Resistance. Weather resistance testing is applicable to all coating compounds intended to be located on the outside of the tank. Accelerated weathering testing s
35、hall be IAW ASTM D 750, ASTM G 155, and AATCC 111 using a Xenon light type weatherometer on samples that have been fuel extracted IAW 4.5.2.1. The breaking strength of the material after aging shall be conducted on both warp and fill samples according to ASTM D 751, Procedure B. Failure of any sampl
36、e set IAW ASTM D 751 shall constitute failure of this test. 4.5.2.4 Gum Content. Cut a 0.2-ounce specimen of each tank material into approximately 0.0625-inch squares, place in a flask containing 8.5 fluid ounces of Reference Fuel D of ASTM D 471, and allow to stand for 48 hours at 735F. A sample of
37、 the fuel shall be retained for later use. Decant and filter the contaminated fluid through Whatman 41H filter paper or equal. Determine the existent/unwashed gum content of the filtrate in accordance with ASTM D 381 using the air jet or steam jet vaporizing medium (which is appropriate for the fuel
38、) and an evaporation time of 45 minutes. Using the same samples after completing the existent/unwashed gum content test above, determine the solvent washed gum IAW ASTM D 381. A minimum of three specimens shall be used. The retained fuel sample shall be tested with the same methods. The existent/unw
39、ashed gum content from the original fuel sample shall be subtracted from the existent/unwashed gum obtained from the fuel used in the soak test. The solvent washed gum from the original fuel sample shall be subtracted from the solvent washed gum obtained from the fuel used in the soak test. Nonconfo
40、rmance to TABLE I shall constitute failure of the test. This test shall be repeated with all fuels identified in 3.3.3 (except for Diesel Fuel and Automotive Spark-Ignition Engine Fuel). 4.5.2.5 Diffusion. The test apparatus shall consist of a diffusion cup and ring, using FIGURE A4 as a guide. Othe
41、r cup designs are acceptable as long as the inside diameter of the cup and ring is maintained at 2.00 0.02 inches and the cup is 1.00 0.06 inches deep. Cut a circular test disk of coated fabric to conform to the outside diameter of the cup flange. Punch holes in the disk to correspond to the flange
42、bolt dimensions as needed. The cup shall be filled with approximately 1.4 fluid ounces of JP-8. A suitable solution shall be used to seal the exposed fabric around the outer edge of the test disk and to seal the test disk to the diffusion cup flange. The test disk shall be placed over the cup with t
43、he tank “interior“ side toward the fuel. The bolts shall be tightened securely. Place the diffusion cup in a suitable rack in a constant temperature of 73.3 2F, and a relative humidity of 65 2 percent. Allow 1 hour for the assembly to reach equilibrium, and then weigh the cup to the nearest 0.005 gr
44、am and place in the rack face upward. Keep the cup at the above constant temperature and humidity for 24 hours and then weigh and check for vapor loss. Re-torque the bolts if necessary. Invert the cup (test disk down) in a rack that permits free access of air to the test disk. Weigh the cup daily. D
45、efective films or leaks caused by faulty assembly are usually found when the cup is weighed on the third day. Continue to weigh the cup daily Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32233A 17 until the weight loss is constant to withi
46、n 0.010 grams per day after two 24-hour periods. Then record daily weight loss for a continuous interval of 72 hours. The diffusion rate (D) in fluid ounces per square foot per 24 hours shall be the average of not less than three samples when calculated from the following expression: D = 144 (averag
47、e daily loss in grams) (Sp. Gr.) (29.573)(3.142)(R) where Sp. Gr. is the specific gravity of the test medium and R is the inside radius of the test cup. The diffusion test shall be repeated and diffusion rates recorded for all fuels in accordance with 3.3.3 (First Article Test only). Nonconformance
48、to the requirement in TABLE I with JP-8 as the test fluid shall constitute a failure of this test. 4.5.2.6 Puncture Resistance. Puncture resistance testing shall be in accordance with ASTM D 751 (Puncture Resistance, Section 22-25), except the ring clamp mechanism shall have an internal diameter of
49、3 inches. Nonconformance to TABLE I requirements shall constitute failure of this test. 4.5.2.7 Low Temperature Crease Resistance. Immerse three coated fabric samples, each 8 inches square, in JP-8 fuel conforming to MIL-DTL-83133, and condition for 24 1 hour, at 73 5F. Remove samples, place on a wire screen, and air dry with forced air at 73 5F for 24 1 hour. Fold the samples in half in each direction so that a folded corner occ
