1、MIL-R-23021B 13 7797906 0302777 MI L-R-23021 B (OS) 17 July 1969 SUPERSEDING MI L-R-23021 A (OS) 2 March 1967 MI LI TARY SPEC1 F I CATI O N ROCKET MOTOR, MANUFACTURING INERT PARTS FOR, GENERAL SPECIFICATION FOR This specification has been approved by Naval Ordnance Systems Command, Department of the
2、 Navy 1. SCOPE 1 .1 This specification covers the requirements for procurement of inert parts for rocket motors. For the purpose of this specification the terms unit, part, component, and inert assembly are used interchangeably. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in ef
3、fect on the date of invitation for bid or request for proposal, form a part of this specification to the extent specified herein. S PECI F I CATI O NS Mi I i tary MI L-1-6868 MI L-Q-9858 MI L-1-45208 STANDARDS MI L-STD-105 MIL-STD-129 MI L-STD-453 Inspection Process, Magnetic Partic fe Quality Progr
4、am Reqdirements Inspection System Requirements Sampling Procedures and Tables for Marking for Shipment and Storage Inspection, Radiographic Inspection by Attributes Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-R-2302LB 13 9999906 O302978 T MI
5、 L-R-23021 B (OS) PUBLICATION Bureau of Nava I Weapons WR 43 Preparation of Qual i ty Assurance Provisions (Including Classification of C ha ra c t e ris t i c s) (When requesting any of the preceding documents, give the complete title and desig- nation. Copies of this specification and other unclas
6、sified specifications, standards, and publications required by suppliers in connection with specific procurement functions should be obtained from the Commanding Officer, Naval Supply Depot (CDS) , 5801 Tabor Avenue, Philadelphia, Pennsylvania 191 20 .) 2.2 Other publications. United States Of Ameri
7、ca Standards Institute Y1 4.5 Dimensioning and Tolerancing for Eng neeri ng Drawi ngs (Application for copies should be addressed to the United States of America Standards Institute, 10 East 40th Street, New York, New York 10016). National Bureau of Standards Handbook H28 Screw Thread Standards for
8、Federal Services (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D .C. 20402 .) 3. REQUIREMENTS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo re
9、production or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-R-23021B 13 7777706 030278L T MI L-R-23021 B (OS) 4.2.1 Serialization. The procuring activity shall assign a block of serial numbers a
10、nd an identifying supplier letter for use on the inert assembly. These numbers shall be used in sequence and shall be assigned to the assembled unit after acceptance inspec- tion, The suppliers serial number on component parts shall be recorded to indicate the unit serial number that parts were asse
11、mbled with. Unused seria! numbers shall be re- turned to the procuring activity upon completion of the contract. Parts shall be marked in a manner that will not make the parts unserviceable. 4.3 Discontinuities. Unless otherwise specified, discontinuities shall be inspecfed for in accordance with MI
12、L-1-6868. Areas inaccessible or inappropriate to magnetic particle inspection shall be radiographically inspected in accordance with MIL-STD-453 after the procuring activity has been advised of the areas requiring radiogrophic inspec- tion. 4.4 Preproduction inspection. - Fifteen preproduction units
13、, manufactured in accor- dance with 3.3, shall be submitted to the activity designated by the procuring activity for inspection. Units shull be inspected for conformance to all requirements and tested for functional characteristics including static test fihngs. Failure of any unit to meet appliccble
14、 documentation requirements may result in rejection of the preproduction sample or disqualification of the supplier. Final acceptance of the preproduction sample shall be made by the procuring activity. Further production of the unit by the supplier, prior to completion of these tests or approval by
15、 the procuring activity, shall be at the suppliers risk unless otherwise specified in the contract or order. 4.5 Production quality conformance inspection Production quality conformance inspection shall include the verification of all characteristics classified as Critical or Major. Characteristics
16、classified as Critical or Major shall not be verified by using pro- duction tooling as a mediu of inspection. 4.6 Tests. 4.6.1 Structural . Structural tests shall be peformed as specified on detail drawings. The load requirements shal I be met as specified. 4.6.2 Hydrotest. Hydrotesting shall be per
17、formed in accordance with applicable drawings. The specified testing pressure shall be met for the specified time. Pressure gages shall be accurate to one percent of testing pressure. The unit shall be visually and tactunlly examined during pressure test for any indication of water leakage. Moni- to
18、ring the pressure gage alone fr an indication of low volume leakage is not sufficient. 4.7 Preparation for delivery inspection. - Preservation, packaging, and packing shall conform to section 5. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R
19、-23021B 13 77777Ob 0302982 1 MI L-R-23021 B (OS) 5. PREPARATION FOR DELIVERY 5.1 Preservation and packaging. Preservation and packaging shall be level A or C, as specified (6.2) . 5.1 .1 Level A. 5.1 .1 .1 Cleaning, drying, and preservation application. Cleaning, drying, and preservation application
20、 shall be as specified on applicable drawings. 5.1.1.2 Unit packaging. When required, loose parts shall be unit packaged us specified on applicable drawings or as required by the contract or order. 5.1 .2 Level C. Units shall be preserved and packaged to ensure. protection against deterioration or d
21、amage in fransit from supplier to initial destination. 5.2 Packing. Packing shall be level A or C, as specified (6.2). 5.2.1 Level A. Units shall be packed in shipping containers provided by the pro- curing activity or as specified in the contract or order. 5.2.2 Level C. Units shall be packed to en
22、sure protection against deterioration or damage in trhnsit from supplier to initial destination. 5.2.3 Palletiziny . When required, shipping containers shall be palletized in accor- dance with applicable drawings or as required by the contract or order. 5.3 Marking. In addition to any special markin
23、g required by the contract or order, unit packuges and shipping containers shall be marked in accordance with MIL-STD-129. 5.4 Deviation. If rocket motor inert parts and loaded assembly are manufactured by the same supplier, the requirements of this section and the shipping requirements of the inert
24、 assembly drawings do not apply. 6. NOTES 6.1 Intended use. This specification is intended for use in procurement of inert parts of rocket motors, 6.2 Ordering data. Procurement documents should specify, but not be limited to, the following: 6 Provided by IHSNot for ResaleNo reproduction or networki
25、ng permitted without license from IHS-,-,-MIL-R-2302LB 23 m 9777706 0302783 3 Ni1 L-R-23021 B (OS) (a) Title, number, and revision of this specification (b) All drawings and revisions applicable to the procurement item (c) Data to be submitted or retained (3.2) (d) When preproduction sample is not r
26、equired (3.3 and 6.9) (e) Preproduction sample size, if not as specified (3 .*3) (9 Activity designated to perform preproduction evaluation (3.3 and 4.4) (9) AQL, if not as specified (4.2) (h) Level of preservation, packaging, and packing required (5.1 and 5.2) (i) Type of shipping containers to be
27、provided (5.2 .i) (i) Serial numbers and identifying supplier letter assigned (4.2.1) 6.3 Value engineering a Suppliers of items covered by this specification are encouraged to submit value engineering suggestions fo the procuring activity in an effort to achieve a required funcfion at the lowest ov
28、erall cost, Drawings of inert parts are normally “end product“ type drawings which permit numerous production methods. If drawings are con-. sidered unnecessari Iy restrictive regarding production methods, a deviation should be re- quested in time to permit preproduction evaluatlon. 6.4 Preservation
29、, packaging, and packing. The selection of methods for preservation, packaging, and packing is in accordance with MIL-P-116. 6.5 Security. All parts or assemblies which are classified shall be stored and transported in accordance with appropriate security instructions. 6.6 Deviation. A request for d
30、eviation from this specification, applicable drawings, specifications, materials, or processes shall be forwarded to the procuring activity prioi- to manufacture of the affected item or items. All deviations shall be limited to the con- tract under which they are granted. A deviation is a before-the
31、-fact request. 6.7 Waiver. A request for waiver from this specification, applicable drawings, specifications, rnaferials, or processes shall be forwarded to the procuring acfivity . A waiver is an after-the-fact request. A waiver request shall include fhe foliowing: (a) Exact nature of the defect 7
32、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-R-23021 B (OS) (b) Characteristic and classification code (symbol and serial number) (c) Quantity of items involved (d) Suggested methods of repair. 6.8 Repairs. 6.8.1 Repair by welding. Unless oth
33、erwise specified, repair by welding is permitted provided all drawing requirements have been met after repair. All repair by welding shall be accomplished prior to final heat treatment. After final heat treatment, repair by welding shall be made only with prior writfen approval of the procuring acti
34、vity. 6.8.2 Repair by plating. Repair by electroplating is not normally permitted but may be requested on an individual part basis for consideration as a waiver. 6.8.3 Thread repair. Thread repair by helical coil is not normally allowed. Helica coil repair in accordance with MS 33537 on such threads
35、 will be considered for waiver on an individual part basis. 6.8.4 Repair of def.ects on parts, welds, etc. Defects found by inspection of paris, provided that ull welds, forgings, etc, may be removed by grinding, machining, etc, dimensioiial dnd structural requirements are maintained. The repaired a
36、rea shall be blended or tapered smoothly. 6.8.5 Other repairs. Repairs other than those listed above are not permitted but may be requested on an individual part basis for consideration as a wuiver . 6.9 Preproduction sample. A preproduction sample is required from each supplier who has not previous
37、ly been approved as a qualified supplier of inert parts. If production by a qualified supplier has been interrupted for more than 6 months or changes are requested in production methods which in the opinion of the prociiring activity could adversely affect unit characteristics, a preproduction sampl
38、e may be required. 6.10 Preproduztion test activity. The contracting officer should specify the name and location of the activity responsible for preproduction testing (6.2) . Unit delivery schedules, location and source of test -equipment, and test procedures should be specified. 6.1 1 Document pre
39、cedence. Conflicting requirements arising between this specification, the contract and any other applicable documentatiorr shall be referred in writing to the procuring activity for interpretation and clarification. Pro j ect No. 1336-NO10 *US. GOVERNMENT PRINTING OFFICE : 1969-393-064/51333 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
