1、“ MIL-W-50791 13 m 7777706 0434158 7 m MIL-FI-5 O 9 91 (MU) 14 June i972 SUPERSEDING 26 September i967 PA-PD-2912 SPECIFICATION WARHEAD, 2-75 INCH ROCKET, HE, 1.1229 WITH OR WITHOUT FUZE, LOADING, ASSEMBLING AND PACKING 1. SCOPE 1.1 This specification covers the quality assurance provi- sions and sp
2、ecial requirements not covered by the drawings, for one type of high explosive warhead designated as Warhead, 2.75 Inch Rocket, HE, M229. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposals, form a part of this specificat
3、ion to the extent specified herein. SPECIFICATIONS M I LI TAR Y MIL-A-2550 - Ammunition and Special Weapons, General Specification for. STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-109 - Quality Assurance lerms and Definitions. MIL-STD-1168 -
4、Lot IJunbering of Ammunit ion. MIL-STD-1235 - Single and !ultilevel Continuous Sampling Procedures and Tables for Inspection by Attributes. 6 FSC: i340 Licensed by Information Handling ServicesORDNANCE CORPS 9218698 - Warhead, 2.75 Inch Rocket, HE, M229 9224841 - Container, Ammo, Fiber PA26 for 9224
5、842 - Box, Packing Ammunition, for Warhead, 2,75 9224843 - Box, Packing, Ammunition for Rocket Motor: w/Fuze or w/o Fuze, Warhead, 2.75 Inch Rocket, HE, XM229. Inch Rocket, HE, XM229. 2.75 Inch, MK40 Modl, MK4O Modo, MK4 and Mods and Warheads XM229, PUBLICATIONS ORDNANCE CORPS ET-9218698 - Equipment
6、 Tabulation (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement function should be obtained from the procuring activity or as directed by the Contracting Officer). 3. REQUIREMENTS 3.1 Material. - Materials shall be in accordan
7、ce with ap- plicable drawings and specifications 3.2 Loaded Assemblies. - The loaded assemblies shall comply with all of the requirements specified on Drawing (dwg.) 9218698 and with all requirements specified in applicable specifications. 3.3 Cavitation in Comp B-4 3.3.1 comp B-4 greater than the c
8、avitation allowed in 3.3.2, 3.3.3, 3.3.4 and 3.3.5. There shall be no evidence of cavitation in the faced 3.3.2 Cracked Charge. - A charge shall be considered cracked Rhen a fissure one thirty second of an inch or less in width nppears on the faced surface with no visual appearance of widening senea
9、th the surface, :han two such cracks. An acceptable warhead shall contain no more c 3.3.3 Piping Cavities, - Any cavity having a dimension great- sr than one eighth inch at the faced surface and extending to a 3 Licensed by Information Handling Services3 MIL-W-50991 13 m 9999406 0434160 5 MIE-W-5099
10、1 (MU) depth of greater than one half inch below the faced surface shall be termed a pipe. Acceptable warheads shall contain no pipes having a dimension greater than one quarter inch on the faced sur- face. Warheads containing pipes which are larger beneath the faced surface than at the surface shal
11、l be unacceptable. 3.3.4 Surface Cavities. - Surface cavities are those cavities having a dimension greater than one eighth inch at the faced sur- face which are neither cracks nor pipes are defined in 3.3.2 and 3.3.3, There shall be no surface cavities having a dimension greater than one quarter in
12、ch on the faced surface. faced surface greater than one eighth inch shall be considered a blemish. Blemishes shall not be used to determine acceptability of a warhead. plished in accordance with best practices. All parts shall be free of any foreign matter. The cleaning method used shall not be in-
13、jurious to any part nor shall the parts be contaminated by the cleaning agent. Surface coatings shall be continuous except for a few slight scratches not exposing base material. All required marking shall be neat and sharply defined. vision for first article inspection. Requirements for the sub- mis
14、sion of first article samples by the contractor shall be as specified in the contract. 3.3.5 Blemishes. - Any cavity not having a dimension at the 3.4 Workmanship. - Loading and assembling shall be accom- 3.5 First Article Inspection. - This specification makes pro- 4. QUALITY ASSURANCE PROVISIONS 4
15、.1 Responsibility for Inspection. - Unless otherwise speci- fied in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. .Except as otherwise specified in the contract or order, the supplier may use his own or any other f
16、acilities suitable for the performance of the inspection requirements specified herein. 3 Licensed by Information Handling Services- - MIL-W-50991 13 W 97999Ob OL1341b1 7 W MIL-W-50991 (MU) unless disapproved by the Government. The Government reserves the right to perform any of the inspections set
17、forth in the specifi- cation where such inspections are deemed necessary to assure sup- plies and services conform to prescribed requirements. Reference shall be made to MIL-STD-109 to define terms used herein. The pro- visions of MIL-A-2550 shall apply, lot of items deliverable under the contract i
18、s submitted to the Government. for acceptance, the contractor shall supply the fol- lowing information accompanied by a certificate which attests that the information provided is correct and applicable to the product being submitted: a. A statement that the lot complies with all of the quality assur
19、ance provisions specified in this specification. b. Drawing and specification number and date, together with identification and date of changes thereto. c. A statement that all material purchased by the contractor meets requirements, when such material is controlled by Government or commercial speci
20、fications referenced in any of the contractual documents, and that certificates of conformance are on file and available for review. The certificate shall be signed by a responsible agent of the Cer- tifying organization. The initial certificate submitted shall be substantiated by evidence of the ag
21、ents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent certificates unless, during the course of the contract, this authority is vested in another agent of the certifying organization. 4.1.1 Submission of Product. - The the time each complet
22、ed d. Number of items in the lot. e. Date submitted. c 4.2 First Article Sample 4.2.1 Submission. - The contractor shall submit a first ar- ticle sample to a Government approved facility as designated by the contracting officer (see para. 6.4) for evaluation in accord- ance with the provisions of 4.
23、2.2. The first article sample shall consist of 10 assemblies and 10 complete sets of parts (i.e., 10 each of every component, and every subassembly) which have been produced by the contractor or furnished by a supplier and which have been manufactured using the same production processes, pro- cedure
24、s and equipment which will be used in fulfilling the con- tract. AL1 parts and materials, including packaging and packing, shall be obtained from the same source of supply as will be used in regular production. Prior to submission, the contractor shall inspect the sample to the degree necessary to a
25、ssure that it 4 Licensed by Information Handling ServicesP NIL-W-5079L 13 W 777770b 04341b2 7 W MIL-W-50991 (MU) conforms to the requirements of the contract and submit a record of this inspection with the sample, including statements of findings, certificates of conformance for materials (see 4.1.1
26、). A sample containing known defects will not be submitted unless specifically authorized by the contracting officer. A first ar- ticle sample, or portion thereof, as directed by the contracting officer, shall also be submitted whenever there is a lapse in production for a period in excess of 90 day
27、s or whenever a change occurs in manufacturing, material used, drawing or specification such as to significantly affect product uniformity as determined by the Government. 4.2.2 Inspections ta be Performed. - Assemblies and compon- ents will be subjected by the Government to any or all of the examin
28、ations or tests specified in this specification and any or all requirements of the drawings. 4.2.3 Rejection. - If any assembly or component fails to com- ply with any of the requirements and inspections, the first ar- ticle sample shall be rejected. The Government reserves the right to terminate it
29、s inspection upon any failure of an assembly or component in the sample to comply with any of the stated re- quirements. In the event of rejection, the Government reserves the right to require the contractor to take corrective action and/or submit a new first article sample or portion thereof, a fir
30、st article sample is accepted the contractor is, in no way authorized by the Government to initiate regular production unless directed by the contracting officer. Until 4.3 Inspection Provisions for Production. 4.3.1 Lot Formation. - The term “inspection Lot“ as used throughout this specification is
31、 defined as an essentially homo- geneous collection of units or product from which a representative sample is drawn and inspected to determine conformance of the lot with applicable requirements. The sample selected shall represent only that quantity of units from which the sample was drawn and shal
32、l not be construed to represent any prior or subsequent quan- tities presented for inspection. Homogeneity shall be considered to exist provided the inspection lot has been produced by one manufacturer, in one unchanged process, iri accordance with the same drawing, same drawing revision, same speci
33、fication and same specification revision and complies with the provisions for sub- mission of product as specifid in MIL-STD-105. Changes to the process, specification or drawing not affecting safety, perfor- mance, interchangeability, or storage, as determined by the Government, shall not be deemed
34、 to alter the homogeneity of the 5 S Licensed by Information Handling Services- MIL-W-50991 13 9979906 0434363 O T MIL-W-50991 (MU) inspection lot. All material submitted for inspection in ac- cordance with this specification shall comply with the homogeneity criteria specified herein regardless of
35、the type of sampling pro- cedure which is being applied to determine conformance with re- quirements. Lot numbering, as required, shall be in accordance with MIL-STD-1168. Each inspectlon lot shall bear a unique lot number. Each lot shall consist of: ber from one manufacturer. same interfix number f
36、rom one manufacturer. subparagraphs shall be performed on inspection lots (see 4.3.1) of the components or assemblies in the applicable paragraph headings. Inspection for critical defects (and major defects when so speci- fied) shall be 100 percent. defects shall be in accordance with MIL-STD-105 ex
37、cept that con- tinuous sampling plans in accordance with MIL-STD-1235 may be used if approved by the Government. Instead of applying the AQLs de- signated herein to the groups of major and minor defects listed, the contractor may elect to apply the AQLs to individual defects using an AQL of 0.40 per
38、cent for each major defect and an AQL of 0.65 percent for each minor defect. When this method is elected, it shall be applied to all of the major and minor defects listed in the applicable subparagraph of this section, except where 100 percent inspection is specified and be documented as part of the
39、 contractors inspection system. Equipment necessary for the per- formance of the inspection listed shall be in accorance with 4.3.4. 4.3.2.1 Metal Parts Assembly (see dwg, 9218699 covering a detail of dwg. 9218698). Categories Defects Method of Code No. Critical: None defined. a. Metal parts from lo
40、ts bearing the same lot interfix num- b. Composition B-4 from not more than three lots with the 4.3.2 Examination. - The examinations listed in the following Sampling plans for major and minor c Inspect ion Ma j or : AQL 0.40 percent 101. Interior coating damaged .or 102. Foreign matter present in n
41、ot continuous.,Visual interior.,.Vlsual O1001 01002 Minor : None defined. 4.3.2.2 Warhead, loaded,prior to insertion of fuze cavity liner,assembly of fuze (see dwg. 9218698). 6 Licensed by Information Handling Services- MIL-W-5077L 13 W 77977Ob 0434lb4 2 W MIL-W-50991 (MU) Categories Defects Critica
42、l: Non defined. I Method of Code No. Inspec tion Major: AQL 0.65 percent 101. Charge missingVisual 02001 102. Explosive in thread.Visual 02002 to be fuzed). .Visual 02004 103. Distance to charge Gage 02003 104. Sealing compound missing (if Min.or : AQL 0.65 percent 201. Silicone compound missing fro
43、m base threadVisual 02005 4.3.2.3 Warhead, loaded, after insertion of fuze cavity liner or assembly of fuze. 4.3.2.3.1 Warhead, loaded, after insertion of fuze cavity liner, if to be shipped without fuze assembled (see adwg. 9218698). Categories Defects Method of Code No. Inspect ion Critical: None
44、defined. Ma j or : AQL 0.65 percent 101. Fuze cavity liner missing or O3001 improperly inserted,Visual 102. Distance to fuze cavity 1iner.Gage 03002 103. Anti-sieze compound missing from fuze thread or incomplete coverage.Visual 03003 1011. Thread danagedVisual 03004 105. Bourrelet damaged.Visual 03
45、005 106. Diameter of bourrelet, max. . Gage 03006 Minor : AQL 1.00 percent 201. Marking missing, misleading or 202, Evidence of poor workmanship unidentifiable . .Visual 03007 (see 3.4) . Visual o3 o08 4:,3,2.3.2 Warhead, loaed (see dwg. 9218GgG). Categories Defects Ilethod of Code No. Critical: ins
46、pection 1 . Fuze type inproper,. . .Visuni 03003 7 Licensed by Information Handling ServicesMIL-W-50771 13 m 777770b 04341b5 4 m v 1 MIL-W-50991 (TU) Major: AQL O .65 percent 101. Thread damaged . .Visual 03004 102. Bourrelet damaged.,.Visual 03005 103. Diameter of bourrelet, max. . Gage 03006 Minor
47、: AQL 1.00 percent 201, Marking missing, misleading or 202. Evidence of poor workmanship unidentifiable,Visual 03007 (see 3.4). VISU SU 03008 4.3.2.4 Fiber Container, sealed, prior to taping (see dwg. 9224841). Cat egories Defects Method of Code No. Inspect i on Critical: None defined. Major: None d
48、efined, Minor: AQL 0.65 percent 201. Gap between body and cover in excess of 118 inch Gage 04001 4.3.2.5 Fiber Container, sealed (see dwg. 9224841). Cat egories Defects Method of Code No. Critical : None defined . Inspect ion Major: AL mandatory (designated t“Jtt) and non-mandatory (indicated by dra
49、wing or Federal Stock Number). When an inspection equipment list references mandatory Army designs, the contractor shall com- ply with, and use these designs accordingly. The contractor may, however, in connection with non-mandatory designs, and with the approval of the Government, design alternate inspection equipment or use comparable commercial equipment to facilitate his operations. Such contractor prepared designs or commercial equipment selections must be approved by the Goverment prior to fabrication or pro- curing of the equipment. Designs shall be submitted for
