1、MIL-R-L202D LO m 9999906 0358843 3 = MILITARY SPECIFICATION IUECEIVER ASSEMBLY, NITROGEN, MIL-R-81202D(AS) 3 February 1981 - SUPERSEDING MIL-R-81202C(AS) 3 February 1976 FOR LAU-7 SERIES LAUNCWRS This specification has been approved by Naval Air Systems Command, Department of the Navy, and is availa
2、ble for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for the manu- facture, inspection and testing of nitrogen receiver assembly hereinafter called receiver assembly. 2. APPLICABLE DOCUMENTS 2.1 Issues of docume
3、nts. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL BB-N-411 Nitrogen, Technical. n Beneficial comments (recommendations, additions, deletions) . and any
4、pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Air Engineering Center, Engineering Specifications and Standards Department (ESSD) Code 93, Lakehurst, New Jersey 08733, by using the self-addressed Standardization Document Improvement Pr
5、oposal (DD Form 1426).appearing at the end of this document or by letter. FSC 1055 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-R-L202D LO = 7779706 0358844 5 = . MILITARY MIL-P- i i6 MIL-R-11468 DOD-D-1000 MIL-L-22620 , MIL-1-23252 MIL-V-2325
6、5 MIL-V-23256 MIL-V-85033 STANDARDS MILITARY MIL-STD-109 MIL-STD- 129 MIL-STD-130 MIL-STD-143 MIL-STD-453 MIL-STD-794 MIL-STD-810 MIL-STD-831 Preservation, Methods of. Drawing, Engineering and Associated Lists. Radiographic Inspection, Soundness Requirements Launcher, Guided Missile, LAU-7 Series. I
7、ndicator, Pressure. Valve, Pressure Relief. Valve, Seal. Valve, Charging. for Arc and Gas Welds in Steel. E Quality Assurance Terms and Definitions. Marking for Shipment and Storage. Identification Marking of U.S. Military Property. Specifications and Standards, Order of Precedence Inspection, Radio
8、graphic. Parts and Equipment, Procedures for Packaging and Environmental Test Methods. Test Reports, Preparation of. for the Selection of. Packing of. DRAWINGS NAVAL AIR SYSTEMS COMMAND (Code Ident 30003) DL 58A164D556 Receiver Assembly, Nitrogen. (Copies of specifications, standards, drawings, and
9、publications required by contractors in connection with specific procurement functions should be ob- tained from the procuring activity or as directed by9the contracting officer.) 3. REQUIREMENTS 3.1 First article. When specified (see 6.2.1), the contractor shall furnish sample unit(s) or first arti
10、cle inspection and approval (see 4.4 and 6.4). 3.1.1 First article sample. Unless otherwise specified in the contract or purchase order (see 6.2.1), a first article sample of five receiver assemblies shall.be delivered to the testing activity designated in the contract or pur- chase order (see 6.2.1
11、). The first article sample shall be manufactured using 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.- a o MIL-R-81202D 10 m 7979706 0358845 7 m - - MIL-R-81202D(AS) the same methods, materials, processes and procedures proposed for production.
12、 Anyproduction prior to acceptance of the first article sample is at the con- tractors risk. . 3.1.2 Disposition of p.reproduction samples. Preproduction samples procured under this specification are considered to be destructively tested and there- ore are not to be included in net deliverable hardw
13、are. -. 3.2 Selection and quality verification of,parts and materials. Quality verified parts (see 3.2.1) and materials from approved sources (see 3.2,2) shall be used in the fabrication of the end item. The contractor shall prepare test reports of conformance to applicable requirements. 3.2.1 Appro
14、val of parts and,materials. Parts and materials proposed for use in the fabrication of the end item that are not specified in detail herein or in applicable referenced documents shall be selected fuom other docu&nts in the order of precedence specified in MIL-STD-143 and shall be approved by the pro
15、curing activity prior to use. (vendor) approval and verification of part quality by test, Approval shall be predicated upon source 3.2.2 Source approval. The contractor shall be responsible for ascertain- ing that each proposed source for parts and materials maintains a quality control program to en
16、sure consistent delivery of products conforming to appli- cable requirements. When parts or materials are fabricated by the contractor, the area used for that purpose shall be considered the same as an outside vendor insofar as source approval is concerned. Source approvals by the contractor shall b
17、e subject to concurrence by the procuring activity. Source approval will be granted by the procuring activity upon preparation of accept- able evidence of any of the following: a. Formal on-site survey of the vendors manufacturing facilities. b. The source has been previously approved, and evidence
18、is avail- able to confirm that acceptable product quality has been main- tained. c. Other evidence of acceptable product quality is available. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-BL202D LO W 7777906 0358B9b 7 W- 3.2.3 Verification
19、 of part quality. Quality verification shall be demon- strated by successful testing pf the part to levels of environmental, elec- trical, and physical stresses equal to or greater than those which will be encountered in the system and as required by the part specification. Part quality may be demon
20、strated by any of the following: a. When the part is manufactured and qualified to a military speci- fication which includes requirements equal to or more severe than those of the end item application. b. When the part is manufactured and qualified to a military speci- fication not including all req
21、uirements of the application, and additional tests for such requirements have been performed. 3.2.4 Approved source/quality verified parts list (AS/QWL) An AS/QVPL shall be prepared by the contractor for all subassemblies and parts for ap- proval by the procuring activity. All entries on the AS/QVPL
22、 shall be fully substantiated by the preparation of data to satisfy the requirements of source approval and part test approval as specified herein. Reports of all quality verification testing shall conform to the requirements of MIL-STD-831. contractor may solicit from the procuring activity informa
23、tion as to the status of quality verified parts and approved sources which may have been previously developed. ports are required in those instances where vendors are selected from current AS/QVPLs of other programs. Entries on the AS/QVPL shall identify the vendor and the product which is proposed
24、for use in the receiver assembly by the con- tractor. In the event several sources have previously been approved for the application, the contractor shall specify the source of the parts to be used. Each item listed shall be supported in accordance with the provisions of this section. This listing d
25、oes not supplant or modify the applicable documentation or other Government Qualified Parts Listing. The Neither part environmental tests nor part environmental test re- 3.2.4.1 Conditions governing the quality verification of parts. When the contractor proposes to demonstrate the quality verificati
26、on of parts, as provided herein, the following provisions shall apply: a. Test may be performed by the contractor, utilizing his own fa- cilities, the facility of the manufacturer of the part or by any other suitable facility selected by the contractor. In any event,the facilities shall be approved
27、by the coqtractor prior to the performance of any test. This information shall be pre- pared for approval by the procuring activity. . b. Prior to the performance of any test, a detailed test procedure shall be prepared by the contractor and approved by the procur- ing activity. The procedure shall
28、identify, as a minimum, the step by step functions to be performed and the test equipment to be used, and shall provide for full conformance with the 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-L202D LO = 7777706 03588q7 O MIL-R- 8 120 1D
29、 (AS) provisions of the applicable documentation. The Government re- serves the right to review any of the individual test proce- .dures at its discretion. c. Quality verification testing may be monitored by a representa- tive of the procuring activity. 3.2.4.2 Changes to the AS/QVPL. The contractor
30、 may develop alternative sources for any part, subject to the provisions herein. Proposals by the con- tractor for part substitution or changes to the AS/QVPL shall include proof that the proposed substitute part will meet the requirements of 3.2.2 and 3.2.3. The AS/QVPL shall be revised and updated
31、 as applicable to include approved changes. 3.2.4.3 Removal from the AS/QVPL. Evidence of poor quality may be cause for suspension or removal of a source from the AS/QVPL at the option of the con- tractor or the procuring activity (see 6.2.1). The contractor shall develop quality verified sources fo
32、r those parts for which the approved source has been removed. conditions unless otherwise directed by the procuring activity (see 6.2.1): Quality reverification shall be required under any of the following a. When the part has been inodified by a change in design, mate- rials, manufacturing process,
33、 manufacturing inspection proce- dures, or manufacturing facilities. The procuring activity shall be notified prior to delivery of any parts incorporating any such changes and be provided quantitative evidence of the effect of suchchanges on the performance or other characteris- tics of the receiver
34、 assembly. b. When there is evidence that the quality of the part has not been maintained. This evidence may be in the form of accumulated failure reports which indicated that the quality of the part has deteriorated, or ther is a failure trend. c. When the manufacturer has not produced the item for
35、 6 or more months. 3.2.5 Part conformance provisions. When a drawing or specification for a . part invokes by reference the provisions of a military specification, total conformance to the provisions of the referenced specification shall be re- quired. Total conformance is defined as conformance to
36、the stated performance and product chaEacteristics, and compliance with all quality assurance pro- visions, including qualification, quality verification, and quality confonn- ance testing. 3.3 Design and construction. The design and construction of the receiver The contractor shall notify the procu
37、ring assembly shall be in accordance with the applicable drawings listed on DL 58A164D556 and as specified herein. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81202D 10 m 7777706 0358848 2 m activity of any changes in the design and const
38、ruction after the receiver assembly has been accepted by the procuring activity. The receiver assembly shall consist of the following components: 3.3.1 Nitrogen receiver. The nitrogen receiver shall be in accordance with the requirements stipulated herein. 3.3.2 Gas pressure indicator. The gas press
39、ure indicator shall be in accordance with MIL-1-23252. 3.3.3 Charging valve. The charging valve shall be in accordance with MIL-V-85033. 3.3.4 Gas pressure relief valve. The gas pressure relief valve shall be in accordance with MIL-V-23255. -. 3.3.5 Seal valve. The seal valve shall be in accordance
40、with MIL-V-23256. 3.3.6 Filter cartridge assembly. The filter cartridge assembly shall be in accordance with the applicable requirements of MIL-V-23256. 3.3.7 Materials. Materials shall be selected on the basis of strength, workability and compatibility with other materials in the item so as to mini
41、 m mize galvanic action, corrosion, etc. 3.4 Interchangeability. All parts having the same part number shall be functionally and dimensionally interchangeable. Changes in part numbers shall be governed- by drawing number- requirements of Doa-D-i00. - 3.5 Identification of parts. All parts shall be
42、marked as specified on DL 58A164D556, or in accordance with MIL-STD-130 if not specified on the drawing. 3.6 Nitrogen supply gas. The gas used in the receiver assembly shall be in accordance with BB-N-411, Type I, Class 1, Grade A, except that the maximum contaminant leve shall not exceed the levels
43、 shown in Table I. 3.7 Performance. The receiver assembly shall, when assembled in accordance with the drawings listed OB DL 58A164B556, meet the requirements as specified herein. 3.7.1 Radiological. The nitrogen receiver shall meet the radiological re- quirements of MIL-R-11468 interpreted in accor
44、dance with MIL-STD-453. 3.7.2 Permanent volumetric expansion. The percentage of permanent volumet- ric expansion shall not exceed five percent of the total volumetric expansion, after the nitrogen receiver has been pressurized hydrostatically to 5500 2100 pounds per square inch gage (psig). 6 Provid
45、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a t- a . . .I . . . :.y . _ _. _ .:- . . . a MIL-R-81202D LO m 777770b 0358847 4 = TABLE I. Nitrogen supply gas - acceptable contaminant level - Contaminant - Water (H20) Carbon Dioxide - Maximum Contaminant
46、Level - 2 parts per million (by volume) 2 parts per million (by volume) Freon 3 parts per million (by volume) Total hydrocarbons (including 10 parts per million (by volume) Methane and Acetylene) Acetylene Methane Hydrocarbons .(others) 1 part per million (by volume) 6 parts per million (by volume)
47、3 parts per million (by volume) Foreign parti cles Maximum of 100 particles, 5.0 to 10.0 microns per cubic foot of flow. No particle larger than 10.0 microns allowed. - 3.7.3 Visual. The nitrogen receiver shall meet the visual requirements to ensure conformance to all requirements listed on DL 58A16
48、4D556 and as specified herein (see 4.6.3). 3.7.4 Cleanliness. The nitrogen receiver shall be pressurized through the charging valve to 2000 +50 psig withnitrogen gas (see 3.6). The samples taken from the nitrogen reever shall not exceed the maximum contaminant levels _. .specified in Table I, after
49、exposure to the temperature conditioning cycle as . follows: a. The ambient temperature shall be reduced to 15.6OC (6O0F) and maintained for approximately 12 hours. b. The ambient temperature shall be increased to 43.3OC (110OF) and maintained for approximately 12 hours. c. The ambient temperature conditioning of a and b shall be repeated. At the complet2on of the conditioning cycle, and within 10 minutes after re- moval from the 43.
