NAVY MIL-C-24524-1975 CABLE ASSEMBLIES MAGNETIC MINESWEEPING TYPE CL2B《CL2B型磁性扫雷缆绳组件》.pdf

1、. . (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) UHIFONII CLASSIFICATION COI4I4ITTEB I: y :. . . -. . . 1 2 1 . I . ; . . . . , . 1 (Application for copies should be addressed to the Uniform Classification C

2、ommittee, . 222 South Riverside Plaza, Room 1106, Chicago, IL 60606.) NATIONhL MOTOR FREIGHT TWFIC ASSOCIATION INCOROORATED , AGENT 1Jational 1-lotor Freight Classification Rules. Association, Inc., 1616 P St. N.W., Washington, D C 20036.) (Application for cop.ies should be addressed to the National

3、 t4otor Freight Traffic FSC 1075 . (1;:- . cl . - . - -., -_ -_-.I. -.-. . . -.-.-.-. _._ I_ . . . . I . . _“._ - . . . -.- . . . -. _.L. . . .-_ -. _._ - . -. . - .-. . . _ - . . . -.a . -,* . - 1IL-C-24 524 (SLIPS) 10 Septenber 1375 MILITARY SPECIFICATION CABLE ASSEMBLIES, f4G;iETIC XINESIiCCPIIJG

4、, TYPE CL2B This specification is approved for use by the !laval Sea Systems Command and is available for use by all Departments and Agencies of the Department of UC?fenSe. 1. SCOPE 1.1 This specification covers type CL2B magnetic minesweeping cible, a single-conductor, insulated, buoyant connecting

5、-link cable wit!i external plastic flotation elements of ball and socket design. 2. APPLICABLE DOCU!ENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDEW

6、PPP-B-1055 - Barrier Material, Waterproofe, STAHDARDS FEDERAL FEU-STD-601 - Rubber: Sampling and Testing. Flexible. . ). I;?: . -. . . THIS DOCUM EQIT CONTAI IVSLPAG ES , . . . , ?SE o :a “,. t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Technic

7、al society and technical association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Feferai agencies.) . . - . - . . . MIL-C-29524 10 9999906 0309398 9 m 3. REQUIREMENTS _. . . i . -. .-. r-.- . ,._-c_c. .

8、 .-. -. -,.- . ,. . t: ) . . i , . .- .:. . .:. . i- . *. :.-. F -.-.-.-. - . - . - . . . .-.-. . - ,.- . . 3.1 Length. Cable assemblies shall have a length of 450 feet within tolerances of plus 10 feet or minus 2 feet. *-. .A ,. .- . .- - . . . . . - .- . -.“- I-. .- . . . .“_ . 3.2 Construction. 3

9、.2.1 Conductor. The conductor shall be 1660 thousand circular mils of harc? drawn alloy 1350 aluminum; 37 ropes, each rope composed of 19 wires, each wire 0.0486 inch in diameter. Nominal overall diameter of the conductor shall be 1.701 inches. 3.2.2 Strand senlin . The conductor shall be blocked wi

10、th the compound and in the manner descrilied?ndtached appendix to prevent the passage of any trace of water through the cable when tested in accordance with 4.13. of 170 mils my be of either taped or extruded construction. be fabric reinforced, but there shall be no fabric in the outer 50 mils of ja

11、cket and there shall be no fabric in a 60 mil thickness of the total insulation thickness. struction is used, curing tapes shall be completely removed so that no fabric ravelings remain. If extruded construction is used, a reinforcing braid, completely bonded to both insulation .and jacket, shall be

12、 applied between insulation and jacket. Khether taped or extruded, the insulation and jacket shall be vulcanized together so as to produce a single cohesive mass (see 3.8). chlorosulphonated polyethylene (Ilypalon), or equal. chlorosulphonateaiolyethylene, the jacket shall be of the same naterial. 3

13、.2.3 Sheath. The cable sheath (insulation and jacket) shall have a nominal thickness If taped, the sheath shall If taped con- 3.2.4 Insulation. Insulation material shall be styrene-butadiene (SBR) or butyl or 3.2.5 Jacket. Jacket material shall be neoprene or, if the insulation material is 3.2.6 She

14、ath thickness. The average thickness of the cable sheath shall be not less than 90 perc-r more than 110 percent of nominal value, and the thickness at any spot shall be not less than 75 percent of nominal value nor more than an amount greater than nominal which would reduce clearance between cable a

15、nd floats by more than 50 percent. The diameter of molded insulation over the terminal barrels shall be 2.820 inches plus or minus 0.202 inch for proper fit of insulating sleeves (see 4.6.1). 3.2.7 Jacket tensile stren th. The cable jacket shall have a tensile strength of 1800 + pounds per square in

16、ch (lb/in ) when tested in accordance with 4.6.2 3.2.8 Jacket elongatio;. Elongation of the cable jacket shall be not less than 250 percent when tested in accor ance with 4.6.4. 3.2.9 Oxygen and sunlight resistance. The tensile strength and elongation of the cable jacket, when tested- accordance wit

17、h 4.6;5, shall be not less than 60 percent of the values obtained in 4.6.2 and 4.6.4. Surface checks and cracks shall not be visible to the naked eye when the visual examination of 4.6.5 is performed. strength to p- cheath slippage when tested in accordance with 4.8. to prevent damage to theden test

18、ed in accordance with 4.11. floats) with unector similar to part number 5263 of Drawing 58101-1566524, except that the thickness of the tongue shall be 0.75 inch. line of the barrel. The connector shall have part number J263A. The part nurnber, the legend “use Navy die number 30“, and the cable supp

19、liers identification shall be stamped on the part. the cable with a pressingie in accordance with Drawing 58101-1566636. 2-1/4 inch 5/8 NC 11-2brass or nickel-copper alloy bolts with washers and self-locking nuts. 3.2.10 Sheath bond. The cable sheath shall be bonded to the conductor wiM sufficient 3

20、.2.11 Dielectric stren th The dielectric strength of the cable shall be sufficient 3.2.12 Cable terminals. Each end of a cable shall be terminated (after installation of One surface of the tongue shall be on center- 3.2.12.1 Pressing die. Cable terminals (and splices (see 4.7) shall be pressed onto

21、3.2413 Terminal bolts. One terminal of each cable assembly shall be supplied with two 2 . . . I c :.:.:.:.:.*:.*.: . . . . i J I . i i . -_II.- - 1 “ - . 3 . -.-. . - . I . -. -.-_ . .-.- “_ -.-,- .-. L. - -.- -.-I.- . . . . . - . - - . *- , . . -“- -. I L:;:;:;. . . t: - -. - . -._ . . . -.- -.- -.

22、-.-. - *I -.-. L I. . . . + . . I . I. -. . . . . .-_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. - . l. _ . . *, ?. *. . “ . . - . + . - ._._._ ._. . . ,. ,- - -.- -II. L.*- . 1 K:z:=:zxT. . . . . 1: ,: b *.- y - . , . . , ,_. . t , ., . . * -

23、 r:. tlIL-C-24524 (SHIPS) - I -. . . *_ - . - . P_I- ,-. . - . * _._ . . . _- .-.II.- ._- . -. I . . . . ,._ .-.- -.l. _ s. , - . ,-.-.-.I I I:.II“.: i:r:-:r; . I. . I , ,._I_ r 5 . . . .- . “. . t: :f: _ (.:.:x:. . ._.-.- , . . . _. .-.- - . . . . _ . . 1 . _- -_ -_ . .-.-. .-. L_ . ._ -. , - . .-J

24、 -_. -_. - :=-.-.- i. . - ,.* _. . .-. . . . - . 3.2.14 Flotation components. Floats and spacers shall be in accordance with Drawing 14-162, clamps shall be in accordance with orawing 3304176, and end clanps shall be in accordance with Drawing 3304130, except that the materiai for ail flotation comp

25、onents shall be Cycolac,.grade Hl or equal. free from ridges, flash, anci excess weld material. Float filler material shall be foamed polystyrene. Floats shall be installcd on the cable altcrnatcly witn spacers. Clamps shall be installed at approximately 20-foot intervals in place of spacers at thos

26、e points. An end clamp shall be installed at each end, leaving a space of 2 to 3 inches between end clamp and terminal. Color shall be gray. Plastic parts shall have a smooth finish 3.3 uoc. Specific gravity of the cable shall not exceed 0.92 when tested in accordancewith 4.5. 3.4 Float com ressioii

27、 stretigth. 3.5 Tensile strenfih. 3.6 Insulation resistance. Insulation resistance of each cable assembly, corrected to 3.7 Contact resistano. Contact resistance between cable conductor and connectors shall Floats shall Withstand a radiai conpression load of 1,000 pounntkurGp opening of seams illien

28、 tested in accordance with 4.4. 15,000 poundsnxted-in accordance with 4.7. Tensile strength of cable asse.*lies shall be not less than a temperature of 1SUC shall be not less than 200 megohm as measured in accordance with 4.12. not exceed 4 microhms when measured in accordance with 3.8 Elastomer bon

29、d. The bond between insulation tion and c=tTfmngs shall be such that a force required for separation wnen tested in accordance with 3.9 Splices. Cable assemblies shall not contain 3.10 Identification. 4.9. and jacket, and between molded insula- of at least 8 pounds per inch is 4.6.3 and 4.10. splice

30、s in the conductor or the sheath. 3.10.1 Cable. The cable type designation (i.e., CLZB), cable serial number, manufac- turers name,Tyear of manufacture shall be clearly nolded into the insulation over the barrels of the terminals at each end. In addition, the cable type and serial number shall. be s

31、tamped into one side edge of the tongue of the terninal at each end. Engineering Cen-AVSBC). L . I 3.10.1.1 Serial numbers. Cable serial numbers will be furnished by the :laval Ship 3.11 Government furnished e ui ment. When specified (see 6.1.11, the Government will furnish the reels specified in 5e

32、 4. QUALITY ASSUWLNCE PnovIsIoNs 4.1 Responsibility for inspection: Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection require- ments as specified herein. Except as otherwise specified in the contract or order, the suppLer

33、may use his own or any other facilities suitable for the performance of the inspec- tion requirements specified herein, unless disapproved by the Government. The Goverment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary

34、to assure supplies and services conform to prescribed requirements. . 4.1.1 ins ection system program plan. The supplier shall provide and maintain an in- spection systemprogram plan in accordancg with the data ordering document included in the c0ntrac.t or order (see 6.1.2). 4.2 Test specimens. . 4

35、.2.1 Lot. A lot shall consist of not more than 25 cables. 4.3 Tests. The tests specified in 4.4 through 4.13 shall be conducted. 4.4 Float com ression test. Three floats, selected at random from floats to be used on a cable= *ped to a radial compressive force of 1,000 pounds applied between two flat

36、 steel plates for a period of 1 hour. ture of 27C 2 GOC. The test shall be made at a tempera- No damage or seam opening or permanent deformation shall result. If 3 : . 1 , . . - /- Y Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-24524 LO 777

37、770b 0304350 7 = - . _- . . - . - . . . . . . I . . _=. . -_. _._ _._I_ . . 1.: . . . , , -“ -. . . , . . , .- . . _., . . J . . 1 _I -. 1 . . . -. MIL-C-24524 (SHIPS) one or more floats fail the test, 20 floats selected at random from the same lot as the 3 floats shall be similarly tested. the floa

38、ts were selected shall be rejected (see 3.4). Buo anc test. length sha-twwith one float clamp and enough floats and spacers applied alternately to cover the remainder of the length. four 1/4-inch holes shall be drilled in a spiral pattern, equally spaced radially and axialIy, completely through each

39、 float, thus providing 16 openings for the entry of water. The drilled floats shall tlien be submerged in water under a hydrostatic gage pressure of 20 lb/in2 for 1 hour, after which they shall be replaced on the cable sample. a tank of fresn water, and lead weights apglied along the length of the s

40、ample until the whole sample sinks. Specific gravity (see 3.3) shall then be calculated from the following formula: If more than one of the 20 floats fail, the lot from which 4.5 A sample of cable of convenient length but not less than 2 feet in The floats shall then be removed from the cable and Th

41、e sample shall be floated in Specific gravity -._._- w_eight of cable inair o4 (Weight of cable in air) + (weight of lead in air x +l-:T) 4.6 Sheath test. The pieces of cable sheath removed from cable ends for installation of termina-1- collected, and five specimens shall be taken at random froni th

42、e collec- tion for each of the tests specified in 4.6.1 through 4.6.5. 4.6.1 Thickness. At least five separate measurements of sheath thickness shall be made on each of the five specimens. sidered the average thickness of the specimen. tensile stre- accorzance with method 4111 of FED-STD-601. of the

43、 samples shall meet the requirements of 3.2.7. trusions or betwehtx tapes shall be tested using method 4221 of FED-STD-601 except that the force shall be applied in such a manner as to tend to separate the plies along their The average of all measurements of a specimen shall be con- Thickness shall

44、meet the requirements of 3.2.6. . 4.6.2 Tensile stren th. The jacket material from five specimens shall be tested for The average tensile strength 4.6.3 % se aration test. On five specimens the bond between successive sheath ex- mating faces. Bond shall meet the requirements of 3.8. - . . I: . 4.6.4

45、 Elon ation Elongation tests in accordance with method 4121 of FED-STD-601 shall , . _ - be made on *;aterial from five specimens. The jacket material shall be obtained by slicing it from the specimens. 4.6.5 Oxygen and sunli ht resistance. Five specimens shall undergo an accelerated aging procedure

46、 conEtdae exposures outlined in methods 7111 and 7311 of FED-STD-601. an alternative to test method 7311 for sunlight resistance, a 100 hour exposure in type D test equipment in accordance with ASTI4 G23 may be used employing a cycle of approximately 1 hour and 40 minutes of arc light exposure follo

47、wed by approximately 18 minutes of exposure to arc light and water spray. Twenty-four hours after accelerated aging is complete, the spec- imens shall be examined visually and tested in accordance with 4.6.2 and 4.6.4 (see.3.2.9). Elongation shall meet the requirements of 3.2.8. 4.7 Cable tensile st

48、ren th test. A two-foot minimum length of cable, including ,terminal, shall befrom e:ch ofwo completed cable assemblies selected at random from eachlot. Removal of the test specimen shall not reduce the length of the cable to less than the tolerance specified in 3.1. The cut ends of the two lengths shall be joined by a repair splice, part 5265 in accordance with Drawing 58101-1566635, and a tensile load.of