NAVY MIL-N-246B-1962 NITROGLYCERIN《硝酸甘油》.pdf

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1、- MIL-N-2i.1bB 13 W 797990b 0290908 Li = MIL-N-246B 19 FEBRUARY 1962 SUPERSEDING MIL-N-246A 20 JUNE 1958 MILITARY SPECIFICATION NITROGLYCERIN This spedfiatzon has been approved by the Department of Defense and .is wmn- atory for use by ths Depaytments of the Amny, the Navy, and the Air Force. 1. SCO

2、PE 1.1 Scope. This specification covers two types of nitroglycerin for use in propellants. 1.2 Classification. The nitroglycerin shall be of the following types, as specified in 6.1 and 6.2. Type I -Using grade B glycerin. Type II - Using partially polymerized glycerin. 2. APPLICABLE DOCUMENTS 2.1 T

3、he following documents of the issue in effect on date of invitation for bids form a part of this specification to the extent spe- cified herein. SPECIFICATIONS FEDERAL O-G-491- Glycerin (Glycerol). STANDARDS MILITARY MILSTD-105 -Sampling Procedures and Tables for In- spection by Attrib- utes. MILSTD

4、-109 - Inspection Terms and Definitions, MIGSTD-129 - Marking for Shipment and Storage. MIL-STD-286 - Propellants ; Standard for Methods of Sampling, Inspection and Testing. PUBLICATIONS QUARTERMASTER CORPS ORD-M-60-il-Procedures and Tables for Continuous Sampling by Attrib- utes. (Copies of specifi

5、cations, standards, drawings, and publications required by contractors in connection with specific procurement functions should be ob- tained from the procuring activity or as directed by the contracting officer.) 2.2 The following documents form a part of this specification to the extent specified

6、herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. CODE OF FEDERAL REGULATIONS 49 CFR 71-90 - Interstate Commerce Commission Rules and Regula- tions for the Transportation of Explosives and Other Dangerous Articles. (The Interstate Commerce Commission

7、 regulations are now a part of the Code of Federal Regulations (1949 Edition -latest revision) available from the Licensed by Information Handling ServicesMlLN-246B Superintendent of Docwnenta, Government Printing Office, Washington 25, D.C. Orders for the above publication should cite “49 CFR 71-90

8、” (latest re- vision.) 3. REQUIREMENTS 3.1 Material. Materials shall be in accord- ance with applicable specifications. 3.1.1 Glycerin. The glycerin used in the manufacture of type I nitroglycerin and in the manufacture of partially polymerized glycerin foi the manufacture of type II nitroglycerin s

9、hall comply with grade B of Specification 0-G491. 3.1.2 Pan%tlly Polymerized glgcerin. The partially polymerized glycerin used in the manufacture of type II nitroglycerin shall contain 27 to 31 percent by weight of poly- mer glycerin, expressed as diglycerin. 3.2 Moisture. The moisture content shall

10、 be 0.6 percent maximum (max.) when deter- mined as specified in 4.3.1. When nitrogly- cerin is used at the point of manufacture in the production of propellant by the water slurry method or by the water emulsion method, the moisture requirement shall not apply. 3.3 Acidity or alkalinity. The acidit

11、y as sulfuric acid or alkalinity as sodium carbon- ate shall be 0.002 percent, -max., when deter- mined as specified in 4.3.2. 3.4 Nitrogen. 3.4.1 For type i. The nitrogen content shall be 18.40 percent, minimum (min.), when de- termined as specified in 4.3.3. 3.4.2 For type II. The nitrogen content

12、 shall be 17.80 percent, min, to 17.90 percent, maximum, when determined as specified in 4,3.3. 3.5 Stability. When subjected to the 82.2 Centigrade (OC.) heat test, the nitroglycerin shall not change the color of the standard potassium iodide starch paper in less than 10 2 minutes when determined a

13、s specified in 4.3.4. 4. QUALITY ASSURANCE PROVISIONS 4.1 General quality assurance provisions. The supplier is resnonsible for the perform- ance of all inspection requirements as speci- fied herein. Except as otherwise specified, the supplier may utilize his own or any other inspection facilities a

14、nd services acceptable ,to the Government. Inspection records of the examinations and tests shall be kept complete and available to the Government as specified in the contract or order. The Government re- serves the right to perform any of the in- spections set forth in the specification where such

15、inspections are deemed necessary to as- Sure supplies and services conform to pre- scribed requirements. Reference shall be made to Standard MILSTD-109 in order to define the terms used herein, Inspection shall be performed in accordance with this specifi- cation and other specifications referenced

16、in any of the contractual documents. 4.1.1 Contmctoy quality assurance qjstem: If the contractor desires to utilize a quality assurance system, which is at variance with the quality assurance provisions of 4.2 and 4.3 and other documents referenced herein, he shall submit a written description of th

17、e system to the contracting officer for approval prior to initiation of production. It shall in- clude a description covering controls for lot formation and identification, inspections to be performed, inspection stations, sampling procedures, methods of inspection, (measur- ing and testing equipmen

18、t), and provisions for control and disposition of non-conforming material. The written description will be con- sidered acceptable when, as a minhum, it provides the quality assurance provisions re- quired by the provisions of 4.2 and 4.3 and the other documents referenced herein. The contractor sha

19、ll not be restricted to the in- spection station or the method of inspection listed in this specification provided that an equivalent control is included in the approved quality assurance procedure. In cases of dis- Licensed by Information Handling ServicesMIL-N-ZLihB 33 3777706 0270730 2 pute 88 to

20、 whether certain procedures of the contractors system provide equal assurance, the comparable procedure of this specifica- tion shall apply. The contractor shall notify the Government of, and obtain approval for, any changes to the written procedure that affects the degree of assurance required by t

21、his specification or other documents refer- enced herein. 4.1.2 Submhsh of product. At the time the completed lot of product is submitted to the Government for acceptance, the contrac- tor shall supply the following information accompanied by a certificate which attests that the information provided

22、 is correct and applicable to the product submitted: (a) A statement that the lot complies with all quality assurance provi- sions of the approved current written description of the system. (b) Quantity of product inspected. (c) Results obtained for all inspection performed. (d) Specification number

23、 and date, to-. gether with an identification and date of changes. (e) Certificates of analysis on all mate- rial covered by reference govern- ment specifications procured di- rectly by the contractor. (f) Quantity of product in the lot. (g) Date submitted. The certificate shall be signed by a respo

24、nsible agent of the certifying organiza- tion, The initial certificate sub- mitted shall be substantiated by evidence of the agents authority to bind his principal, Substantia- tion of the agents authority will not be required with subsequent certificates unless, during the course of the contract, t

25、his au- thority is vested in another agent of the certifying organization, 4.1.3 Govmm,ent verificatiun. Using the contractors written quality assurance proce- dure (see 4.1.1)$ this detail specification, and -i MIGN-246B other contractuai documents as a guide, the Government inspector shall verify

26、ali quality assurance operations performed by the con- tractor, Verifcation shali be in accordance with a or b as applicable, the decision being the responsibility of the procuring activity. in either me, the inspector shall also ascer- tain, prior to acceptance, that ail quality as- surance provisi

27、ons of other specifications ref- erenced in any of the contractual documents here have been complied with. Deviations from prescribed or agreed upon procedures discov- ered by the Government inspector shall be brought to the attention of the supplier. Dis- position of the product and remedial action

28、 shall be as directed by the Goveinnent in- spector and, depending on the nature of the deviation, may consist of lot rejection, screen- ing, re-sampling, re-instruction of the sup- pliers employees, or other appropriate ac- tion : (a) Verification at the point of manu- facture shall be accomplished

29、 at unscheduled intervals in accord- ance with 4.1.3.1 and 4.1.3.2. (b) Verification at the point of delivery shall be in accordance with 4.1.3.2. 4.1.3.1 Surveillance. Surveillance shall in- (a) Observation of procedures concein- ing lot formation and identifica- tion. (b) Observation of sampling p

30、rocedures and application of acceptance ci;- teria. (c) Determination that all required ex- aminations and tests are per- formed in accordance with the prescribed procedures of this spe- cification, or approved equivalents thereto. (d) Review of procedures for control and disposition of non-conformi

31、ng material. 4.1.36 Product impecthn. Product inspec- tion shall consist of Government inspection of product which has been previously in- clude, but is not limited to- 8 Licensed by Information Handling Services MIL-N-2466 33 m 9777706 0270733 Lt m MIL-N-246B spected by the contractor and found to

32、meet the quality assurance provisions of this spe- cification. The inspection by the Government shall be performed in order to determine that the product is of the quality required by this specification and that the contractors rec- ords are reliable. 4.2 Inspection provisions. 4.2.1 Lot formution.

33、Where the batch proc- ess is used a lot shall consist of one nitration charge, When the continuous process is used, a lot shall consist of not more than 3,000 pounds. 4.2.2 Examimth. Sampling plans and pro- cedures for the following classification of de- fects shall be in accordance with Standard MI

34、L-STD-105. Continuous sampling pIans, in accordance with Handbook ORD-M60-ll may be used if approved by the procuring activity. Also, at the option of the Govern- ment, AQLs and sampling plans may be ap- plied to the individual characteristics listed using an AQL of 0.25 percent for each major defec

35、t, 4.2.2.1 Imide container, (prhr to filling). Method of Catenvree Defects inspection Critical-None defined. Major-AQL 0.25 percent. Minor-None defined. 101. Container inaterial improper Visual 4.2.2.2 Inside conbiner ( filied). Method of Categories Defects inspectic# Critical : 101. Leak in contain

36、ei. Visual Major-AQL 0.25 percent rlO1. Marking incorrect, incomplete or illegible. Visual Minor-None defined. 4.2.2.3 Boot, rubber container for individ- mi! contaner (pror to mertm of contuiney). Method of Categmes Defects inspection Critical-None defined. Major-AQL 0.25 percent 101. Boot cut, tor

37、n or punctured Visual 102. Boot leaks vi su Minor-None defined. 4 - * 4.2.2.4 Boot, rubber wntaimr for indivduul containers (with cwhwr imerted) . Method of CateuorTes Defects inspection Critical-None defined. Major-AQL 0.40 percent. 101. Boot height, improper Visual 102. v-shaped grooves missing or

38、 incomplete. Visual 103. Marking incorrect, incomplete or illegible. Visual 104. Containei. does not fit snugly Manual Minor-None defined. 4.2.3 Testing. 4.2.3.1 Samplhg. Using a rubber dipper, a sample of approximately 2 ounces shall be removed from each lot. The nitsoglycerin shall be transferred

39、to a rubber bottle with a rubber stopper. The bottle shall be labeled to show the following: (a) Source of manufacture. (b) Plant. (c) Contract or purchase order number. (d) Number of pounds in the lot. (e) Lot number. If the sample fails to comply with any of the requirements specified the lot shal

40、l be re- jected. After disposal of the nitroglycerin from the rubber sample bottle, the bottle shall be cleaned as follows: (a) Rinse thoroughly with acetone. (b) Flush generously with hot tap water (3 minutes under a direct flow is considered adequate). (c) Rinse with distilled water and dry, 4.3 T

41、est methods and procedures. 4.3.1 Determimth of mouture in and the fact that the Govern- ment may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing the holder or any other p

42、erson or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto, Custodians: Armyardnance Corps Navy-Bureau of Naval Weapons Air Force-WADD Army-Ordnance Corps Preparing activity: *U, 84 GOVERNMENT PRINTING OFFICE: 61 lOBO-l962-(79) Licensed by Information Handling Services