1、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-LbLh 13 m 777790b 0297597 3 m MIL-18616( Nord) 3.1.1 The reqummenta bd procedures establiahed in O
2、P 400 shall be adhered to wherever applicable, 3.2 Prhin mixture. 1- The moiature content of the priming mixture at the time of loading shall be lesa than 0.30 percent as determinod by the proceure epecified in 4.c.l. The composition of the priming mixture shall meet the drawing requirements when su
3、bjected to the chemical analysis specified in 4.5.3. - y . 3.3 Lead azide. 0- The moisture content of the lead azide at the tima of loading shall be less than 0.30 percent as determined by the procedure specified in 4.5.1. 3.4 Tetryl. - The volatiles and moisture content ofthe tetryl at the time of
4、loading: shall not exceed 0,lO percent when tested a3 apecified in 4.5.2. explosive components of the detonator shall be 88 specified on the applicable drawinc. to the drawing requirements shall be controlled and determined by the procedures specified in 4.5.4 and 4.5.5. 3.5 - Detonator loadinfr,. 0
5、- The charge weights of the The conformance of these weights 3.6 Detonator sem it iv i ty . detonatm shall be ascertaine sensitivity value shall be us process control, Deviations not directly cause the reject be reason foc checking matei4 mixture composition for cornpl specification requirernents. =
6、- The sonsitivit of, the d as spocified in .S.6. ed for data card record and in sensitivity values shall ion of detonators, but may als, processes* and priming .iance with drawint, and . The 3.7 Detonator functioninq. - The detonator shall function on firing pin penetration when tested in Test Set (
7、Detonator) Mk i36 Nod O using a two ounce test ball and a drop height of. 12 inches. in 4.5. Test Set i:.;k 136 hod U shall produce perforstions in the lead dieCs for 85 gercent of the detonators tested. The average diameter of the perforations shall be 0.200 Inch or greater. of a circle of equal am
8、a as determined by the use of Test Set i-lk 170 Mod 1. Each individual indentation produced in lead discs which are not perforated shall be 0.195 incii or greater in depth, Testing and acceptance shall be as speoi- fled in 4.5.8. Testin, preproditction sample is received which proves to bo Satis* fa
9、ctory for the purpose incendod, the Contractor will b6 notified and will be authorized by the Procuring Agency to Accepted aamples will become the property of the Yrocming Agency and will be included in the number called for in When a , i I proceed with the submission of the product for acceptance.
10、i I the contract schedule. t 4.2.3 Preproduction sample for a subsequent contract, - The nbceaslty for a. preproduction stmple will be detormined by the Procuring Agency when production under a new contraot by the ame Contractor at the same Location follows the manufacture of satisfactory msterial a
11、s covered by this speclflsation, 4.3 Produotion lot, - For procurement lot of loaded detonators shal coiisist of .plus those required for all test purposes stated in the oontraot, order, or requisi test pyrposea shall be at the expense of The produotion lot should not be oonfused inspection puofms a
12、s defined in 4.E.1. purposes each 10,000 units . Unless otherwise tion all units for the Contractor. with the lot for Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license
13、 from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- D- 18616 (NOr d) 4.5.3.4 Carborundum, - Subtract the original weight of the ignitedmtering crucible from the weight of the cru- cible and residue acter the antimony sulphide deterniin
14、ationo This difference, calculated as a percentage of the original sample, shall be considered the percentage of oarborundum. ! 4.5.4 Process control tests for detonator charRe weights, - !I Process control tests shall be conducted for each variation in the operating procedures, processes, or materi
15、als and at such obher times as the Inspector ccnsiders warranted. . 4.,5,4,1 Process control procedure. -a %jake five inspec- tions on individual detonators for the conformance of eaoh increment. charge weight with tho drawing requirements, deviation from drawing roquirements shall cause a suspensio
16、n of that phase of the explosive loading until pmmanent corrective measures satisfectory to the Lnspector have been complot e d. A 4*5.5 increment chaibge weight t.est. - From each maximum lot of ten-thousand (10,000) detonators select at random times during manufacture ten detonators at each of the
17、 three incremental stages of loading, This sel.ection will provide 30. partially and fully charged detonators for *en individual measurments of each increment charge weight. The lot shall he rejected if the average of a sample of ten measurements on an increment charge weight plus or -minus 1.5 stan
18、dard deviations of the values exceeds the minimum or maximum weight specified for the increment on the drawin. shall not be used to fill the sample rt3quisements for this teat, of 8 sample. -= NAVCihD Form 1844 ( New U-47) describes the calculation procedure for the computation of the Pvarage and st
19、andard deviation of a sample and provides a convenient form for rscording of the data, Each measurement shall be to the nearest rnilif.,mm, Detonators from the process Control test8 4 4.5.5. Computation of. the average and standard deviatlon i 4.5.6 Detonator sensi,tivitg test. - Select 50 detonator
20、s from each maxinim lot of 10,000 detonators for the Bruceton (Staircase) Sensitivity Test Use Teat Set (Dotoristor) Mk 1 List of Dralqings LD No, 16653 %ill Test Sleeve, . Anvil, and Bureau of Ordnanoe Drawings 553491 398475 piece 9 and test 0.5; inch incremenkse Bureau of Ordnance c .1 .I #- %.: 7
21、 -, -_ L- - -_I_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-prooedures are described in OD 5823. Ammunition Data Card speoified in 5.4, the 50 peroen6 firing height (E) and the standard deviation (s) oalculated from the test data, Record, on the
22、 4*5,7 D$.t:onator functioning test, - Samples shall be seleoted nd tested from each lot Ln aacordmce with the Muktiple Samplfnp Plan, Inspection Level II, AQL 0.25 percent defective as given in Standard MLL-STD-lOS, The lnitfatlon of the detonator shall be accornplshed by the use of Test det Mk i36
23、 Mod O equipped as specified in 4,.5,6, - The two ounce test ball shall be dropped from a height of 12 Inohes to initiate the detonator, Detonators which do not explode on the first penetration of the firing pin shall ta classed as defectivo, shcll be in accordance with tho smpling plan given above,
24、 All the perforated or indented lead discs from the test shall be retained and used for filling the sample requirements 4e5,8 Detonator output test. - On lot$ of 22,000 detonators or less, one hundred and fifty:(lSO) lead discs shall be selected from the discs obtained from tests of 4.5e7, The order
25、 of selection shall be the firing order, In small lots the sample deficiency shall be supplied by extra firings to provide a sample of at least 150 specimens, On lots greater than 22,000 detonators, all the perforated or indented lead discs from tests of 4.5.7 shall be used for ascertaining output.
26、hcoeptance of the lot shall be based on the following criteria: Acceptance of tho lot of 4J.L .C 9. u- ! (a) The detonators testod shall produce holes in 85 percent or more of the lead discs, Failure to meet this requirement shall cause rejection of the lot from which the samples were taken. The ave
27、rage of the diameter of the perforation in all the perforated lead discs ,shall be equal to or greater than 0,200 inch as determined by measurement with Test Set SJTk 170 Mod 1, Failure to meet this requirement shall cause rejection of the lot from which ths smples were taken. The depth of each lead
28、 disc indentation proauced by the explosion of the detonators shall be equal to or greater than 0.19f; inch when measured as specified in 4.5.8.1, Failure of two percent or more of the total 4 (b) (c) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
