1、AMMONIUM PERCHLORATE, TECHNICAL MIL-A-192B 2 September 1965 Superseding MIL-A-192A 24 October 1960 This specification has been approved by the Department of Defense and is mandatory for use by the Departments of the Arm), the Navy, and the Air Force. 1. SCOPE 1.1 Scope. 1ms specification covers thre
2、e grades and seven classes of ammonium perchlorate,( NH4CIO. 1. 2 Classification. The materi 1 811 be of the following grades and classes as specified Ln the contract or order (see 3.2 and 3.3). Grade A - Low moisture content. Grade B - Extra low moisture content. Grade C - Tricalcium phosphate cond
3、itioner added. Class 1 - Through 420 and 297 micron sieve, retained on 74 micron sieve. Class 2 - Through 297 micron sieve. Class 3 - Through 149 micron sieve Class 4 - Graduated sieving. Class 5 - Through 297 micron sieve, C las s 6 - Graduated Sieving. Class 7 - Graduated sieving. 2. APPLICABLE DO
4、CUMENTS 2.1 Government documents. The following documents of the issue in effect on date of invitation for bids or request for proposals. forn: a part of this spec -ification to the extent specified herein: / FSC: 6810 / ;.-Provided by IHSNot for ResaleNo reproduction or networking permitted without
5、 license from IHS-,-,-IviIL-A-i92B SPECIFICATIONS Federal L-P-378 L-T-IOO TT-E -485 Military 11IL-P-1l6 MIL-D-3464 STANUARDS Federal FED-STD-595 Military 11IL-STD-I05 WL-STD -109 lvITL-STD-129 MIL-STD-286 J1IL-STD-1234 MIL-STD-1235 Plastic Film (Polyethylene. Thin Gage) Tape -Pressllre Sensitive Adh
6、esive, Polyester Film Enamel! Semi -Gioss, Rust Inhibiting T“._ _ ltr_+,l ;: _ 11 _ ,. 1.(, _ rohr“. .o.I“t r“f J.IlULIl, H.l.t=idl., “0 edl.lUll: .I.V :1l1!-,111Cl1l VJ. hl“ “,.,c;ut: l.!f.,.i:llc: .v._“IV“ vu . - . “ . Surface Moisture, max 0.020 0.015 0.020 4.3.1.3 Water Tno;:“1thl - I.C N Il Pro
7、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-192B 4. QU ALITY ASSURANC E PROVISIONS 4.1 General quality assurance provisions. The supplier is responsihle for the performance of al inspection requirements as specified herein, Except as otherwise
8、 specified, the supplier ma utilize his own or 3n other inspection facUities and services acceptable to the Government. In -pectinn lccords of the examinations and tests shall be kept complete and a ai labJe to the Gove rnmc n: as specified in the contract or order. The Government reserves the right
9、 to perform any of the inspections set forth in the speCification where such inspections an deemed necessary to assure supplies and services conform to prescribed requirements, Reference shall be made to Standard nL-STD -109 in order to define the terms used herein. Inspection shall be performed in
10、accordance with this specification and other specifications referenced in any of the contractual documents. 4.1.1 Contractor quality assurance system. If the contractor desires to utilize a quality assurance system, which is at variance with the qualit assurance provisions of 4.2 and 4.3 and other d
11、ocuments referenced herein, he shall submit a written description of the system to the contracting officer for approval -riar to initiation of production. It shall include a description covering controls for lot formation and identification, inspections to be performed. inspection stations, sampling
12、 proceciureE, methods of inspection (measuring an d te sting equipment). and provisions for control and disposition of non-conforming material. The written desc:-iption will be considered acceptable when, as a minimum. it provides the quality assurance proviSions required by the provisions of 4.2 an
13、d 4.3 and the other documents referenced herein. The contractor shall not be restric.ted to the inspection station nor the method of inspection listed in this specification provided that an equivalent control is included in the approved qualit, control procedure. In cases of dispute as to whether ce
14、rtair: procedures of the contracto r s system provide equal assurance, the comparable procedure of this specification shall apply. The contractor shall notify the Government of. and ob-tain approval for, any changes to the v,ritten procedure that affects the degree of assurance requirec by this spec
15、ification or other documents referenced herein. 4.1. 2 Submission of product. At the time the completed lot of product is submitted to the Govenrnent for acceptance. the contractor shall supply the following informaLion accompanied by a ce:-:ificate which attestE that the iniormat ion provided is co
16、rrect and applicable to the product submitted: 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rvrrL-A-192B (a) A statement that the lot complies with all quality assurance provisions of the approved current A/fitten description of the system. (b;
17、Quantity of product inspected. (c) Results obtained for all inspection performed. (d) Specification number and date together with an identification and date of changes. (e) Certificates of analysis on all ITlaterial procured directly by the contractor “,hen such material is controlled bv Government
18、specifications listed in any of the contractual documents. (f) Quantity of product in the lot. (g) Date submitted. The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submitted shan be substantiated by evidence of the gents a.uthority te, bi
19、nd his principaL Substantiation of th agent1f authority will not be required with subsequent ce rLineales unless, during the course of the contract, tnls authority is vested in another agent of the certifying organization. 4.1. 3 Government verification. Using the contractors written quality assuran
20、ce procedure (see 4.1.1), this specification. and other contractual documents as a guide, the Government inspector shall verify all quality assurance operations performed by the contractor. Verification shall be in accordance with a or b as a.pplicable, the decision being the responsibility of the p
21、rocuring acti vHy. In either case. the inspector shall alsc ascertain. prior to acceptance. that all quality assurance provisions of other specifications referenced in any of the contratual document: have been complied lith, Deviations from prescribed or agreed upon procedures dlscovered by the Gove
22、rnTIlent inspector shall be brought to the attention of the supplier. Disposition of the product and remedial action shall tJ as clirected b the Go“ernmen: inspector and. depending on the nature of the deviation, filly consis of lot re.iection. screenIng, I“e-sampling, re -instruction of the supplie
23、 r I s employees, 0 r othe r appropriate action: 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-A-192B (a) Verification at the point of manufacture shall be accomplished at unscheduled intervals in accordance with 4.1. 3.1 and 4.1. 3. 2. (b)
24、Verification at the point of deiivery shaH be in accordance with 4.1.3.2. 4 1.3.1 Surveillance. Surreillance s:rll include. but not be limited to: (a) Observation of procedures concerning lot formation and identification. (b) Observation of sampling procedures and application of acceptance criteria.
25、 (c) Determination that all required examinations and tests are performed in accordance with the prescribed procedures of this specification or approved equi !alnts thereto. (d) Review of procedures for control and disposition of non conforming materiaL 4.1. 3. 2 Product inspection. Product inspecti
26、on shall consist of Govern ment inspection of product which has been previous 1: inspected b the contractor and found to meet the quality assuranCE proisions of this specification and that the contractors record are reliable. 4.2.1 Lot for!llation. Alot ammonium perchlorate; produced by one manufact
27、urer, in accordance with the sa.me specification! or same specification revision. under one continuous set of operating conditions. Each batch sr.2.P consist of tha quantit of ammonium perchlorate that has been subjected to the same unit chemical or phsical process intended to make the final product
28、 homogeneous. The product sha11 be suhmitted for inspection in accordance with Standard llIL-STD-I05 (or Standard rvrrL-STD-1235 when applicable). 4.2.2. Examination. Sampiing pians and procedure for the following classification of defects shall be in accordance with 1tIIL- ID-i05. Cont inuous sampl
29、ing plans in accordancE witI-. Standa.rd r,IIL-STD-1235 may be used if approveci by the procuring activity. Also. at the option of the procuring acti vity, AQLs and sampling plans may be applied to the individual charactc ristics listed using an AQL of 0,40 for each major defect and AQL of 0.65 for
30、each minor defect 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-192B 4.2.2.1 Containers for domestic shipment and limited storage, prior to closing. Categories Defects Critical Major: AQL 1. 00 percent 101. Thickness of liners incorrect min
31、imum (min) 102. Liner material improper 103. Liner missing. cut. torn or punctured 104. Liner improperly sealed 105. Desiccant bags missing r-.lethod of inspection Major Gage Visual Visual Visual Visual Code No. (See 6.7) 01001 01002 AlAn) VIVVv 01004 01005 4.2.2. 2 Container for domestic shipment a
32、nd limited storage. closed. Categories Defects lVlethod of Code No. Inspection (see ).7) Critical: None defined ivlajor: AQL 0.65 percent I ir. . .“.nDr nnnrl: sealed Visual 02001 .LV.L. - -J I J “-0-1 1 J -.i. t- “- “ . 4.“ 102. l1arking misleading or unidentifiable Visual 02002 103. Weight lncorre
33、ct Scale 02003 :Minor: NOn? definec 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-fUL-A-192B 4.2.2.3 Container for overseas shipment. prior to closing. Categ()lies Defects Method of Inspect io Critical: None defined Major: AQL 1. no percent IV1aJ
34、or 10l. Thickness of liner, min. Gage 102. Liner material improper Visual 103. Liner missing. cut, torn or punctured Visual 104. Liner improperly sealed Visual 105. Desiccant bags missing Visual l1inor: None uefined 4.2. Z. 4 Container fOl over-seaS shipment. closed: Categories Defects Critical: Non
35、e defined . AQL 0.25 percent 101. Weight incorrect i 02. Iiarking mis leading or unidentifiable None defined 10 lethod of Inspection I1ajor Scale Visual Code Nc (see 6 i) 03001 03002 03003 03004 03005 Code No. (see 6. 7) 04001 04002 Provided by IHSNot for ResaleNo reproduction or networking permitte
36、d without license from IHS-,-,-MIL-A-192B 4. 2. 3 Testing. 4.2.3. 1 Sampling by lot. Samples shall 1x taken at random from each lot as follows: Containers in Lot 1-9 10-99 1finimurn No. of Containers Samoled 11.11 J.l 10 10 percent 4.2.3.1.1 Primary sample. A sample thief. 3/4 inches in diameter and
37、 of sufficient length to reach the L “,+-t:im of the container, shall be inserted at an oblique angle to the max.irnum possible depth in each container sampled. Insertion of the thief shall be repeated at different locations until a pint of sample is removed. Samples shall be placed in clfan, dry. m
38、oisture proof containers with a screw or compression type seaL Each sample container shall be labeled with the following data: (a) Material name (b) Lot number (c) Type and Granulation Class (d) Container from which sample was aken (e) 1rnufacturer (f) Date 4.2.3.1. 2 Composite sample. The primary s
39、amples shall be divided into two groups. A one pint composite sample shal1 be prepared for each group by thoroughly mixing equal portions of each primary sample and transferring this mLxture to clean, dry, moisture proof containers. The containers shall then be labeled with the following data: (a) t
40、1aterial name (b) Lot number (c) Ty-pe and Granulation Class (d) Composite Sample (e:1 Manufacturer (0 Date 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-19ZB 4.3 Test !-lethods and procedures. Distilled or deionized water and American Che
41、mical Society reagent grade chemicals shall be used throughout the tests. Tests shall be conducted as follows: 4.3.1 Moisture - (Code No. 05001). The Karl Fischer (KF) method shall be used with any suitable apparatus according to the gene ral procedure described below (see 6.5.5). The end point ma b
42、e determined either visuali or electro rnetricaliy by mea-:1S of either direct or back titration. In all operations, protect tDe sample against change in moisture content. 4.3.1.1 Standardization of Karl Fischer Eeage!1t. Add 100 milliliter (m) of the pyridine-methanol solution (see 6.5.3) to a clea
43、n, dry titration flask containing a stirring bar. Close the flask, start the magnetic stirrer and titrate to an end point, using either a direct or back titration. Add 0.10 : o. OJ rams (gm) of sodium tartrate dihydrate (see 6. 5.4), keeping the flask open for the minimum time possible, and allow to
44、 stir until solution is practicall) complete. Add small increments of Karl Fischer Reagent (KFR) to assist solution and titrate to an end point after solution is complete. For back tit!ation. a standard solution of water in-mefranol (T1) should be used (see 6.5.2). Calculate the water equhalence (F)
45、 of the KFR as follows: F Where: A = B R Direct Titration O.1556V A Back Titration O. 1566/ AR-B Volume of KFR required in direct titration or added for back titration, ml. Volume of .Vrrl solution used it: back titration, mI. Ratio oi volume of standard M used in back titration (A) to volume of KFR
46、 added (B). (R= ) , .0“ 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-lYllL-A-192B lhe ratio, rt, is determineu oy aaolng an aCCUraleJY measured volume of pproximatcly 10 ml of KFR to a convenient volume of the methanol-pyridine solvent (see 6.5
47、.3) which has just been brought to an end point. Titrate the KFR 4. 3.l. 2 Total moiSTUre. - (Code t-;o. 06001) Place approximately 15 gm portions of the sample in d:-y, stoppered veighing bottles and determine the lotal weight of sample and bottle to the nearest 10 milligrams (mg). Add 100 m1 of mc
48、th3.nol-pyridine solution to the titration vessel and titrate to an end-point with KFR. As soon as the end-point is reached, transfe:- the contents of the weighing bottle to the titration vessel and immediatel:, reclose the vessel. Do not take time to try to transfer all of the sample, but restopper the weighing bottie and 3.g:lin weigh to th2 nearest 10 mg. l“o , _ “- _ _ _ r L_ “.!L _ L: _ _ 1 _ . .!., .:lllr lne corlleIlL
