1、INCH-POUND MIL-DTL-17124F 17 July 2012 SUPERSEDING MIL-DTL-17124E 06 March 2001 DETAIL SPECIFICATION CORD, DETONATING and DUMMY CORD, DETONATING This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification describes the r
2、equirements, examinations and tests for the following items: Cord, Detonating and Dummy Cord, Detonating. 1.2 Classification. The detonating cords covered by this specification are classified into the following types and classes as specified (see 13042072). Type I contains PETN as major component of
3、 explosive core. Type II - contains RDX as major component of explosive core. Type III- contains inert powder as a major component of inert core. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not i
4、nclude documents in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all requirements documents cited in sections 3 and 4 of this s
5、pecification, whether or not they are listed. Comments, suggestions, or questions on this document should be addressed to: Commander, US Army ARDEC, Attn: RDAR-QES-E, Picatinny Arsenal, New Jersey 07806-5000 or emailed to ardecstdznconus.army.mil. Since contact information can change, you may want t
6、o verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. AMSC N/A FSC: 1375 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
7、HS-,-,-MIL-DTL-17124F 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the
8、solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-P-223 - Powder, Black MIL-P-387 - Pentaerythrite Tetranitrate (PETN) MIL-DTL-398 - RDX (Cyclotrimethylenetrinitramine) MIL-C-46246 - Charge, Demolition, TNT, Block Pound, Pound, and 1 Pound DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810
9、 - Environmental Engineering Considerations and Laboratory Tests MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1916 - DOD Preferred Methods for Acceptance of Product (Copies of these documents are available online at https:/assist.dla.mil/quicksearch/ or from the Standardization Document Order
10、Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings and publications. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. US ARMY ARMAMENT RESEARCH, DEVELOPM
11、ENT AND ENGINEERING CENTER (ARDEC) DRAWINGS 13042072 - Cord, Detonating (Copies of the above drawings are available from U.S. Army RDECOM-ARDEC, ATTN: RDAR-EIS-PE, Bldg. 12, Picatinny Arsenal, NJ 07806-5000 or by email at pica.drawing.requestconus.army.mil .) 2.3 Non-Government publications. The fol
12、lowing documents of the exact revision listed below form a part of this specification to the extent specified herein. ASTM INTERNATIONAL ASTM D4976 - Standard Specification for Polyethylene Plastics (Copies of the above document can be obtained from the ASTM International headquarters, 100 Barr Harb
13、or Drive, West Conshohocken, PA 19428 or online at www.ASTM.org .) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17124F 3 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text
14、 of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Required inspections. 3.1.1 First article. When specified, a
15、 sample shall be subjected to the first article inspection in accordance with 4.2. 3.1.2 Conformance inspection. A sample shall be subjected to conformance inspection in accordance with 4.3. 3.2 Materials, components and assemblies. All materials, components and assemblies shall comply with the requ
16、irements of 13042072 for all types and classes. 3.2.1 Detonation velocity (applicable to Type I and Type II). The detonation velocity shall comply with 13042072. 3.3 Propagation of detonation (applicable to Type I). The detonating cord shall propagate from a main line to a branch line when attached
17、by a girth hitch. All cords shall detonate completely. 3.4 Cut-off (applicable to Type Ip and Type IIc). The detonating cord shall either completely detonate or remain functional after a neighboring cord is detonated. 3.5 Detonation of TNT (applicable to Type Ib, Ic and Ij). The detonating cord shal
18、l initiate TNT conforming to MIL-C-46246 high order. 3.6 Flame sensitivity (applicable to Type I and II). The detonating cord shall not detonate when four (4) ounces of black powder spread around and over the cord (including the open ends) is ignited. 3.7 Impact sensitivity (applicable to Type I and
19、 II). The detonating cord shall not propagate when impacted by a bar weighing 25.0 0.1 lbs with a 2.0 0.1 inches striking face diameter dropped from a height of 16.0 0.1 feet. 3.8 Waterproofness (applicable to Type I and II). The detonating cord shall completely detonate after immersion in not less
20、than 12 inches of water for not less than 72 hours. 3.9 Solar radiation (applicable to Type I and II). The detonating cord shall show no change in physical characteristics such as form, color, and diameter after exposure to 130 5F with 360 47 Btu/ft2/hr simulated solar radiation for a minimum of 4 h
21、ours. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17124F 4 3.10 Cold conditioning (applicable to Type I and II). The detonating cord shall show no change in physical or performance characteristics - such as form, color, diameter, breaking
22、 strength, and velocity of detonation - after being conditioned at -65 5F for a minimum of 72 hours. 3.11 Flexibility (applicable to Type I, II, and III). The detonating cord shall not crack after being conditioned at -65 5F for a minimum of 72 hours and then wrapped five turns around a mandrel. For
23、 detonating cords with a measured outer diameter of 0.25 inches or less, a 0.25 0.01 inch diameter mandrel shall be used. For detonating cords with a measured outer diameter greater than 0.25 inches, a 0.75 0.01 inch diameter mandrel shall be used. 3.12 Ammunition lot numbering. Ammunition lot numbe
24、rs shall be assigned in accordance with MIL-STD-1168. 3.13 Workmanship. All parts, sub-assemblies, and assemblies shall be clean and free of burrs, cracks, blisters, chips, dirt, grease, oil (except where specifically required), rust, salt deposits, corrosion, and other foreign matter. All required
25、markings shall be neat, legible, only where specified, and sharply defined. 4. VERIFICATION TABLE I. Requirement/verification cross reference matrix. Method of verification 1 - Analysis 2 - Demonstration 3 - Examination 4 - Test Classes of verification A First article B Conformance Section 3 Descrip
26、tion Verification Methods Verification Class Section 41 2 3 4 A B 3.1.1 First article X X X 4.2 3.1.2 Conformance inspection X X X 4.3 3.2 Materials, components and assemblies X X X X 4.3.4.1, 4.3.4.2, 4.4 - 4.11 3.2.1 Detonation of velocity (applicable Type I and II) X X X 4.12 3.3 Propagation of d
27、etonation (applicable to Type I) X X X 4.13 3.4 Cut-off (applicable to Type Ip) X X X 4.14 3.5 Detonation of TNT (applicable to Type Ib, Ic, Ij) X X X 4.15 3.6 Flame sensitivity (applicable to Type I and II) X X X 4.16 3.7 Impact sensitivity (applicable to Type I and II) X X X 4.17 3.8 Waterproofnes
28、s (applicable to Type I and II) X X X 4.18 3.9 Solar radiation (applicable to Type I and II) X X X 4.19 3.10 Cold conditioning (applicable to Type I and II) X X X 4.20 3.11 Flexibility (applicable to Type I, II and III) X X X 4.21 3.12 Ammunition lot numbering X X X 4.3.4.1 3.13 Workmanship X X X 4.
29、3.4.1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17124F 5 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.
30、3). 4.2 First article inspection. When specified, a sample of five (5) complete spools shall be subjected to first article inspections in accordance with Table II or Table III, as applicable. The sample shall be obtained from the first production lot which has been produced by the contractor using t
31、he same production processes, procedures and equipment as will be used in fulfilling the contract. All materials shall be obtained from the same sources of supply as will be used in regular production. 4.2.1 First article rejection. If any assembly, component or test specimen fails to comply, the sa
32、mple and test shall be rejected. TABLE II. First article tests and inspections for Type I and II. Examination or test Drawing Sample size Requirement paragraph Verification Cord, Detonating. 13042072 Construction Diameter 5/1 Type III only) 5 /13.2 Visual 107 Ammunition lot number 5 /13.12 VisualMin
33、or 201 Workmanship Level II 3.2 Visual Notes: /1A total of five (5) spools shall be randomly selected. Randomly cut one (1) sample, not less than eighteen (18) inches long, from each of the five (5) spools and sequentially subject them to the specified examinations. Seal the ends of the samples to p
34、revent explosive spillage. 4.3.4.2 Detonating cord tests. Drawing Number 13042072 Next Higher Assembly Tests Conformance Criteria Requirement Paragraph Paragraph reference/ Inspection Method Critical None defined Major 101 Weight of finished cord 5/13.2 4.9102 Breaking strength 5/13.2 4.10 103 Weigh
35、t of explosive (Type I or II) or inert fill (Type III) 5/13.2 4.11104 Detonation velocity (only Type I and II) 5/13.2.1, 3.2.1 4.11 105 Propagation of detonation (only Type I) 5/13.3 4.12106 Cut-off test (only Type Ip) 5/13.4 4.13 107 Detonation of TNT (only Type Ib, Ic, and Ij) 5/13.5 4.14108 Flame
36、 sensitivity test (only Type I and II) 5/13.6 4.16 109 Impact sensitivity test (only Type I and II) 5/13.7 4.17110 Waterproofness (only Type I and II) 1/23.8 4.18 111 Flexibility 5/13.11 4.21Minor 201 Workmanship 5/13.2 VisualNotes: /1A total of five (5) spools shall be randomly selected for examina
37、tion. One (1) set of sample lengths shall be cut from each of the five (5) spools and then subjected to each of the specified tests. Seal the ends of the samples to prevent explosive spillage. /2If the lot is comprised of 50 ft spools, two 50 ft spools shall be subjected for this test. Provided by I
38、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17124F 84.4 PETN inspection. The PETN lot shall be verified and accepted/rejected in accordance with MIL-P-387. 4.5 RDX inspection. The RDX lot shall be verified and accepted/rejected in accordance with MIL-
39、DTL-398. 4.6 Thermoplastic resin inspection. The thermoplastic resin shall be verified and accepted/rejected in accordance with ASTM D4976. 4.7 TNT inspection. The TNT lot shall be verified and accepted/rejected in accordance with MIL-C-46246 4.8 Diameter inspection. For each sample, use a permanent
40、 marker (or alternative) to mark two locations at least four (4) inches apart from each other and at least three (3) inches from the cut ends. At these marks, measure the maximum diameter of the detonating cord. The samples and lot shall be rejected if any of the detonating cords do not meet the dia
41、meter requirement. 4.9 Weight of finished cord test. Cut the samples to 12.0 0.05 inches in length. Weigh each sample in grams (W). Calculate the weight of each finished cord as follows: nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnull nullnullnullnull nullnullnull 1000 nullnull,nu
42、llnullnull null null null1000 nullnullnullnull454 nullnullnullnullnull nullnullnull nullnullThe sample and lot shall be rejected if any of the detonating cords exceed the maximum finished cord weight requirement. 4.10 Breaking strength test. From each of the five (5) spools, cut a sample at least tw
43、elve (12) inches in length. For each sample, use appropriate equipment to record failure load and apply an increasing load to the point of breakage. The samples and lot shall be rejected if any of the detonating cords do not meet the breakage strength requirement. 4.11 Weight of explosive or inert f
44、ill test. Cut the samples to 12.0 0.05 inches in length. Weigh each sample in grams (WT). Cut open each sample and remove the explosive/fill, while retaining all the construction material. Weigh each samples construction material in grams (WA), now absent of explosive/fill. For each sample, calculat
45、e the weight of explosive/fill per 1000 feet as follows: nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnull 1000 nullnull,nullnullnull null nullnullnullnullnullnullnull null1000 nullnullnullnull454 nullnullnullnullnull nullnullnull nullnullThe samples and lot shall b
46、e rejected if any of the detonating cords do not meet the minimum explosive weight requirement. 4.12 Detonation velocity test (Type I and II). From each of the five (5) spools, cut a sample at least three (3) feet in length. Obtain one sample and attach a method to measurement to a portion of the sa
47、mple at least twelve (12) inches long and at least one (1) foot from both Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17124F 9ends. Record the distance between the timing start and end points (D). Secure a commercial Number 6 blasting cap
48、 to the samples. For Type I samples, secure the blasting cap approximately six (6) inches from the end using adhesive tape, so that it is almost completely covered with tape except for the ends. For Type II samples, secure the blasting cap to the detonating cords square cut dry end using a butt joint; the end of the blasting cap shall be in immediate contact with the detonating cords explosive core. Initiate the blasting cap. Measure and record the detonation time in microseconds (T). Calculate the velocity of detonation as follows: nullnullnullnullnullnullnullnull nullnull nu
