1、MIL-C-85077 13 7779706 0363643 ?! a 737y7 e-!- MIL-C-85077 (AS) 12 December 1977 1.11 LI TARY SPEC I FI CATI ON CAPS, BLASTING, SPECIAL This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Dep
2、artment of Defense. 1. Scope. This specification covers electric, shielded blasting caps for use in detonating explosives (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 invitation For bids or request for proposal, form a part of this speci- fication to the extent specified herein: The following documents of
3、 the issue in effect on date of S P EC I F I CAT I ONS Federal W-B-41 l B1 acting-Apparatus (Machines , B1 asting; Gal va- nometers and Rheostats for Testing Blasting Circuits and Machines) QQ-A-250/8 Aluminum Alloy 5052; Plate and Sheet QQ-L-201 Lead, Sheet PPP-B-621 Box, Wood, Nailed and Lock Corn
4、er PPP-B-636 BOX, Fi berboard PPP-B-1055 -Barrier Material , Waterproofed, F1 exi bl e Beneficial comments, (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: 93, Naval Air Engineering Center, Lakehurst, NJ 08733 by u
5、sing the self -addressed Standardization Document Improvement Proposal (DD Form 1426) appearinq at the end of this document or b.y letter. Engineering Specifications and Standards Department, Code I i i , THIS DOCUMENT CONTAINS i PAGES. ?-., Provided by IHSNot for ResaleNo reproduction or networking
6、 permitted without license from IHS-,-,-MIL-STD-129 MI L-STD- 1461 Marking- For Shipment and Storage Ammuni tion Manufacturers and Their Symbols PUBLICATIONS Department of Defense 4145.26M DoD Contractors Safety Manual for Ammunition, Explosives and Re1 ated Dangerous Materials (Copies of specificat
7、ions, standards, drawings, and pub1 ications required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as drected by the con- tracti ng offi cer . ) 2.2 Other publications. The following document forms a part of this specification to th
8、e extent specified herein. The issue in effect on date of invitation for bids or request for proposal shall apply. CODE OF FEDERAL REGULATIONS 49 CFR 171-178 Hazardous Materials Regulations, Department (Copies are available from the Superintendent of Documents, Govern- of Transportation ment Printin
9、g Office, Washington, DC 20402.) 3. REQUIREMENTS 3.1 caps shall be as specified herein. shall be of the best quality normally used for the purpose in good com- mercial practice. The materials shall be free of all defects and imper- fections that might affect the serviceability of the finished produc
10、t. Material. The materials used in the manufacture of the blasting All materials not definitely specified 2 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-
11、,-,-MIL-C-5077 13 = 9777706 O363646 4 MIL- C-85077 (AS) 3.3 Details of assembly. The base- charge shall be compressed into the shell. A primer charge, or a primer and ignition charge, shall be placed in the shell. The caps shall be provided with a pair of copper lead wires, approximately 24 feet in
12、length, in accordance with the MIL-C-27500, cable designation 22ML2T08, sealed into the cap to make a waterproof assembly. The shielding shall be electrically connected to the cap and to a female connector with a conductive material (solder, braze, or a conductive epoxy such as Emerson and Cuming, I
13、nc., Type 72- G) throughout their respective entire peripheries to form a continuous shield without electrical discontinuities or gaps. The pins on the inner conductors of the connector shall be female and recessed into the insulator to prevent unintentional contact by fingers or tools. In addition,
14、 the tips of the female pins shall be recessed well below the lip of the surrounding shield to provide additional shielding. The shielded lead wires shall be covered with a heat shrinkable, flexible, insulation sleeving of appropriate quality. A metal-cased male plug, designed to completely mate wit
15、h the outer shell (shield) surface before any of its inner shorted conductors make contact with the recessed pins of the connector, when being unmated, shall completely open-circuit the female conductor pins before the shell (shield) contact surface has broken contact, The female connector and plug
16、shall be approved by the contracting officer. The outside of the blasting cap shell shall be legibly marked with the manufacturers code number per MIL-STD-1461. One male plug with 36 inch leads compatible to female connector, shall be.provided with each package of 10 blasting caps for detonation use
17、. 3.4 Functioning. 3.4.1 Electrical resistance. The resistance of the complete cap assembly, including its leads, shall be 2.2 5 0.5 ohms when tested as specified in 4.5.3.1. 3.4.2 Waterproofness. The caps shall withstand submersion in water for a period of 4 hours at a temperature of 70 Fahrenheit
18、(F) 55 and a pressure of 50 pounds per square inch (psi) as specified in 4.5.3.2. Following the test, the caps shall function satisfactorily, as evidenced by the perforation of the lead discs when the caps are tested as specified in 4.5.3.2 and 4.5.4.1, and shall either: (a) Function upon applicatio
19、n of an electric current of 1.5 amperes for a period not exceeding 50 milliseconds, as specified in 4.5.3.2, or 4 . . . . . - . - : - i . . ._ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-C-5077 23 W 7797706 03636117 b M MIL-C-85077( AS) (b)
20、 Function through a total resistance of 32 ohms when fired with a blasting machine, as specified in 4.5.3.2. 3.5 Current requirements. 3.5.1 Functioning. The electric caps shall fire when an electric current of 0.45 ampere is applied. 3.5.2 Nonfunctioning. The electric caps shall not fire when an el
21、ectric current of 0.2 ampere is applied for 5 seconds, as specified in 4.5.5.1. 3.5.3 Firing time. The caps shall fire in accordance with table II. 3.6 Safety. The supplier shall observe the safe practices and standards set forth in DoD 4145.26M. 3.7 Workmanship. All parts shall be free of chips, di
22、rt, grease, rust, and other foreign material. The cleaning method used shall not be injurious to any of the parts nor shall the parts be contaminated by the. cleaning agents used. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for-inspection. Unless otherwise specified in the contract or purchas
23、e order, the supplier is responsible for the per- formance of all inspection requiremenix as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspec- tion requirements specified herein,
24、unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 - Lot. A lot shall consist of blasting caps pro
25、duced by one manufacturer under one contract in one unchanged process and in accord- ance with the same specification and same specification revision. Each lot shall contain: (a) Blasting caps (b) Aluminum shell of new manufacture made by one manufacturer in accordance with the same specification an
26、d same specification revision (c) Lead azide of one manufacturer .from the same interfix lot number . . c 5 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-
27、,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-waterproofness) provjded that all the tested caps comply with the appii- cable functioning requirements and MIL-STD-105, AQL 1.0%. 4.5.4 Static functioning test. 4.5.4.1 Procedure. The lead discs us
28、ed in this test shall be made of 8-pound sheet lead complying with QQ-L-201, grade B, and shall be 0.1345 inch in thickness and 1.22 -0.01 inches in diameter. The disc shall be centered over a 15/16-inch-diameter hole in a metal support. The cap shall be suitably fixed in a upright position so that
29、the base of the cap is in contact with the lead disc. The caps shall be fired singly, with an.electric current of 0.45 amperes, in an upright position, with bottom resting on the unsupported section of the lead disc. shall be made for complete detonation of the cap as evidenced by the perforation of
30、 the lead disc. Observation 4.5.4.1.1 Low temperature phase (-58OF). stored at a temperature of -58“F, or colder, for a period of 2 hours, minimum. functioning test specified in 4.5.4. Observation shall be made for perforation of the lead discs to determine compliance with the require- ments. 4.5.4.
31、1.2 High temperature phase (120OF). stored at a temperature of 120F for 5 days. subjected to the static functioning test specified in 4.5.4. shall be make for perforation of the lead disc to determine compliance with the requirements. Ten sample caps shall be The caps shall then be immediately subje
32、cted to the static Ten sample caps shall be The caps shall then be . Observation 4.5.4.2 Acceptance. The lot shall be considered acceptable provided that, in the phase being tested (that is, low temperature phase (-58OF), or high temperature phase 12OoF) the caps fire and comply with the applicable
33、static functioning requirements and MIL-STD-105, AQL 1.0%. 4.5.5 Electric current test. 4.5.5.1 Nonfunctioning. The samples selected for 4.5.3.1 shall be subjected to this test. An electric current of 0.20 ampere shall be applied singly to each cap for a period of 5 seconds. be made for nonfunctioni
34、ng of the cap to determine compliance with the requi rements. Observation shall 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-5077 13 7797706 0363651 B MIL-C-85077 (AS) 4.5.5.2 Acceptance. The lot of blasting caps shall be considered accept
35、able provided that in the nonfunctioning test the caps comply with the applicable requivements and MIL-STD-105, AQL 1.0%. 5. PREPARATION FOR DELIVERY 5.1 Pac kagi ng . 5.1.1 Unit packages. Caps shall have the lead wires laid in folds in such a manner that the folds will open readily without tangling
36、 the wires and shall be placed in individual packages 5 inches or more in length, constructed of chipboard having a thickness of not less than 0.010 inch. 5.1.2 Intermediate packages. 5.1.2.1 Unit packages. Unit packages shall be packaged in fiberboard boxes in quantities of 10 unit packages each. 5
37、.1.2.2 Boxes. The boxes shall be snug fitting, W-board interior fi berboardss compl yi ng wi th the requirements of PPP-B-636, type SF, class weather-resistant, grade WS, style FOL, for type 2 load, and closed in accordance with requirements of the appendix thereto. 5.1.2.3 Liners. The unit packages
38、 shall be separated with water- resistant fi berboard complying with the requirements of PPP-6-636, grade W6s. box, using the same material as specified above, to make a snug fit, if necessary. Liners shall be used at the sides, ends, top, and bottom of the 5.1.2.4 Marking for identification. Each i
39、ntermediate box shall be marked or labeled to indicate the item and quantity contained therein as fol 1 ows : NAVAL AIR SYSTEMS COMMAND ELECTRIC, SHIELDED BLASTING CAPS No commercial number designation for the cap shall appear on the box. 5.2 Pac ki ng . 5.2.1 Intermediate packages. Intermediate pac
40、kages shall be packed in lined nailed wood boxes in quantities of 1 package each. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-BS077 13 M 9999906 0363652 T M MIL-C- 8507 7 (AS 5.2.2 Boxes. Nailed wood boxes shall comply with the requiremen
41、ts of PPP-B-6nlass 2, style 2, for type 3 load. 5.2.2.1 Liner. Each shipping container shall contain a barrier material complying with the applicable requirements of PPP-B-1055, classes C1, C2(a), El, E2, H1, H2, H3(a), H4, H5, L2(b), and M1. The liner shall completely inclose the contents of the bo
42、x. shall be one-fourth inch greater than the interior length and width of the container to avoid tensional strain when the box is tightly packed. The liner shall be securely sealed at all joints, seams, and folds with . a water-resistant adhesive. All flaps shall be folded over, and a rectangular pi
43、ece of similar liner material equal in size to the width and length of the box, shall be coated with a similar adhesive and securely bonded to the top of the sealed case liner for additional pro- tection. The dimensions of the liner 5.2.2.2 Cushioning. The intermediate packages shall be cushioned wi
44、th dry excelsior, sawdust, or equivalent material. The cushioning material shall be spread over the bottom of the lined box to a depth of at least 1 inch, and at least 1 inch of the cushioning material shall be packed tightly between the interior containers and the sides and ends of the lined box. I
45、n addition all voids shall be filled tightly and the box filled to the level of the top with at least 1 inch of cushioning material to provide a tight pack when the box is closed. 5.2.2.3 Closure and strapping. The wood boxes shall be closed and strapped in accordance with the requirements of PPP-B-
46、621 and the appendix thereto. stapled; The straps shall be tensioned and sealed but not 5.3 Marking. Each wood box shall be marked or labeled to indicate the item and quantity contained therein. shall be marked as required by the Code of Federal Regulations 49 CFR 171-178 and DoD 4145.26M to insure
47、safe handling. In addition marking shall be as specified in MIL-STD-129, except as may be modified by the contracting offi Cer. The exterior shipping containers 6. . NOTES 6.1 Intended use. The blasting caps covered by this specification are intended for detonating compressed TNT, compressed nitrost
48、arch, Composition C-3, and Composition C-4 explosives to create earth cavities. These cavities are to be filled with coi)cyete to qnchqr aircraft and other ground support equipment at exPedlt1onarY alr fields- 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Preparing activity (Project No. 1375-Nl27) Navy - AS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
