1、MILITAFiY SPECIFICATION DETONATOR MK 27 MOD O 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
2、 permitted without license from IHS-,-,-3.8 Detonator Output, - Each explosion of the detonator in the Test Set Mk 136 Mod O shall produce a perforation in the lead disc greater than S.300 inch in diameter. The perforation diameter shall be the diameter of a circle of equal area as determined by use
3、 of the Test Set Mk 170 Mod 1. Testing and acceptance shall be in accordance with 4.5.6. 4. QUALITY ASSURANCE PRViSIONS AND TEST REQUIREMENTS 4.1 S.amplfnq. - Unless otherwise specified, and when applicable, the sampling plans and procedures used by the Goverment Inspector in the determination of th
4、e accepta- bility of products submitted by a supplier for Government Inspection will be in accordance with the provisions of Military Standard MIL-STD-105, “Sampling Procedures and Tables for Inspection by Attributes“, of units of product, the tem “Lot“ shall mean “Inspection Lot,“ if a collection o
5、f units of the product used as a basis for Government Inspection. Unless otherwise speci- fied, the number of units of product in “Inspection Lots“ shall be as determined by the Government Inspector, and may differ from the quantity designated in the contract or order as a lot for production, shipme
6、nt, or other purpose . 4.1.1 Lot. - As applied to the Government Inspection 4.2 Preproduction Sample. - Before entering into quan- roduction a preproduction sample of one thousand tity (10OUp Detonators Mk 27 Mod O shall be delivered by the Contractor for test to an agency designated by the Procurin
7、g Agency. These detonators shall be manufactured by the same procedures and processes and at the same lo- cation proposed by the Contractor for the execution of the contract. When a preproduction sample is received which proves to be satisfactory for the purpose intended, the Contractor will be noti
8、fied and will be authorized by the Procuring Agency to proceed with the submlssion of the product for acceptance. Accepted samples will become the property of the Procuring Agency and will be included in the number called for in the contract schedule. 4.2.1 Preproduction Sample for a Subsequent Cont
9、ract. - The necessity for a preproduction sample will be determined by the ProcGing Agency when production under a new contract by the same Contractor at the same location follows the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-manufacture of sat
10、isfactory material as covered by this spe cf icat ion . 4.3 Production Lot. - For procurement purposes each lot of loaded detonators shall consist of 10,000 units plus those required for all test purposes. The production lot should not be confused with the lot for inspection purposes as defined in M
11、ilitary Standardf MIL-STD-105 4.4 Inspection. - The general inspection procedures shall be in accordance with “General Instructions for the Design, Nanufacture, and Inspection of Naval Ordnance Equipment“, OP 400; Government Inspection shall be in accordance with the provi.sions of General Procedure
12、 for Government Inspection and Contractors Inspection shall be in accordance with Inspection by Cantractor as contained in OP 400. 4.5 Tests. 4.;.i Noisture Content Test for Priming Plixture and Lead Azide. - Conduct at least one test for each lot of detonators and such additional tests as the Inspe
13、ctor considers warranted by variations in the process and materials. Collect an approximate two gram sample of the material being loaded in a tared, stoppered container at the site of and immediately prior to consolidating the charge in the detonator. Weigh the container; open and expose the sample
14、for drying at 50 3- 2 degrees C and at least 28 inches (Hg) vaeuum until constant weight is reached. Cool the container in a desiccator; stopper and weigh. All weighings shall be accurate to dry for approximately 15 minutes at 95 degrees C; cool in a desiccator, and weigh, The percentage loss in wei
15、ght, based on the weight of the orig,inal sample, shall be considered the percentage of potassium chlorate. 4.5.3.2 Lead Azide. - Extract the residue from the potassium chlorate determination with 5 ml portions of saturated ammonium acetate solution at about 25 degrees C. Hot saturated ammonium acet
16、ate solution must not be used as it issolves the antimony sulphide to some extent, Agitate each portion for about 30 seconds and repeat ex- tractions until the filtrate no longer gives a yellow precipitate with potassium dichromate solution. The use of more than 60 ml of ammonium acetate should be a
17、voided. Wash the residue with distilled water; rinse wlth a few ml of alcohol, then ether; dry for approximately 15 minutesat LOO degrees C; cool in a desiccator, and weigh. The percentage loss of weight, based on the weight of the original sample shall be considered the percentage of lead azide. Ad
18、d 3 ml of a saturated solution of lead If necessary Agitate for 60 seconds. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.3.3 A;ntimony Sralphfde, - Extract.the residue from the lead azide determination w%th hsdrochlorlc acid until free from an
19、timony sulphide, Cold concentrated hydro- chloric acid is used for the extraction. After neutralzzing, ammonium sulfide may be used to detect antimony in the filtrate. Wash the crucible contents with hot concentrated hydrochloric acid. Ignite uiit$1 free from sulphur, cool in a desiccator, and wefgh
20、. The percentage, based on the weight of the original. ample, shall be considered the percentage of antimony sulphfde, Carborundum, - Subtract the original weight of the ignited filtering crucible from the weight of the crucible and residue after the antfmony sulphide determin- ation. This differenc
21、e, calculated as a percentage of the original sample, shall be considered the percentage of carborundum. 4.5.3.4 4.5.4 Detonator Sensftivity Test. -0 Select fifty (50) detonators from each lot (no lot shall exceed 2O1O0O detonators ) for the Bruceton (Staircase) Sensitivity Test using 2.0 inch incre
22、ments. Use Test Sat (Detonator) Mk i36 Mod O, Bureau of Ordnance List of Drawings LD No. 166538, with Test Ball, Bureau of Ordnance Drawing No. 553491, piece 3. oedures are described in OD 5823. Recopd, on the Armnunition Data-Card specified in 5.4, the 50 percent firing height (h) and the standard
23、deviation (9) calcu- lated from the test data. Test set operation and test pro- 4.5.5 Detonator fimtioning Test. -0 SmpPsa shall be selected and tested from each lot in accordance with the Multiple Sampling Plan, Inspection Level II, AQL 0.25 percent defective as given in Military Standard MIL-STD-l
24、OS. The initiation of the detonator shall be accompllshed by the use of Test Set Mk i36 Mod O equipped with the test ball specified in 4.5.4. dropped from a height of five inches to initiate the detonator. Detonators which do not explode on the first penetration of the firing pin shali be classed as
25、 defective. Acceptance of the lot shall be in accordance with the sampling plan given above. The lead discs shall be re- tained and used to fill the sample requirements specified in 4.5.6. The two ounce ball shall be 4.5.6 Detonator Output Test. - Samples shall be selected and tested in accordance w
26、ith the Single Sampling Plan, Inspection Level I, AQL 1.0 percent defective as Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- IL-D-18504 13 U 9797906 0299472 5 m 4 /- ,- ,/- MIL-D-l8504(NOrd) given in Military Standard MIL-STD-105. retained from th
27、e functioning test of 4.5.5 shall be used to fill sample requirements. continue the test firing of 4.5.5 to provide the required number of discs. If an excess of discs are available from 4.5.5 random selection of the sample shall be practiced. A detonator which produces a perforation with an equv- a
28、lent diameter of less than 0,300 inch, as determined by measurement with Test Set Mk 170 Mod 1, shall be elassed as defective. Lot acceptance shall be in accordance with the sampling plan given above. The lead discs Where necessmy, 5 PREPARATION FOR DELIVERY 5.1 Packaginq. =- One hundred (100) Deton
29、ators Mk 27 Mod O shall be packaged in accordance with Bureau of Ordnance List of Drawings LD No. 168793, Mod O, packaged as specified in 5.1 shall be packed in accordance with Bureau of Ordnance List of Drawings LD No. 168794, 5.2 Packing. - Five thousand (5000) Detonators a and the fact that the G
30、overment may have formulated, furnished, or in any way supplied the sald drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
