1、MIL-C-70770 (3) W 999990b 2022859 925 W MIL I TARY INCH-POUND I MIL-C-70770 (AR) AMENDMENT 3 - SUPERSEDING AMENDMENT 2 17 January 1995 SPECIFICATION CONTAINERS, SHIPPING AND STORAGE: PA 137, PA 138, AND PA 141, FOR THE M139 MINE DISPENSER SYSTEM This amendment forms a part of MIL-C-70770(AR), dated
2、4 November 1992, and is approve6 for use by the U.S. Army Armaments Receafch, Development and Engineering Center, and is available for use by all Departments and Agencie Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-Co70770 (3) W 7999906 20228
3、60 647 MIL-C-70770 (AR) AMENDMENT 3 PAGE 4 & * 3.3.1.4: Delete in its entirety and substitute the following: “3.3.1.4 Cornerwise dr- . The PA137, PA138, and PA141 containers shall be subjected to the cornerwise drop test as specified in 4.5.4, followed by a pressure retention test as specified in 3.
4、3.1.1.“ Add new paragraphs 3.3.3, 3.3.4 and 3.3.5 as follows: “3.3.3 Laminate strenut h. Fiberglass reinforced plastic used in the container shall meet the strength requirements of Drawing 12564879 when tested as specified in 4.5.9. 3.3.4 Laminate hardness . Fiberglass reinforced plastic used in the
5、 container shall meet the Barco1 hardness requirements of Drawing 12564879 when tested as specified in 4.5.10. 3.3.5 Jaminate weiaht . Fiberglass reinforced plastic used in the container shall meet the glass content requirements of Drawing 12564879 when tested as specified in 4.5.11.“ Add new paragr
6、aphs 3.4.1, 3.4.2 and 3.4.3 as follows: 3.4.1 Glass kita,ocieU . Fabrication of container base and cover shell configuration shall be documented on a glass kit schedule for primary laminates as defined on Drawing 12564879. As a minimum, the glass kit shall define, for each layer, the sequence of app
7、lication, material description, location, orientation, size, quantity, weight, and overlap of converging layers. The glass kit shall be prepared for each container cover and base shell and documented to record part number, approved revision(s) and date(s). The glass kit schedule and any changes ther
8、eto, shall be submitted in writing to the contracting officer or the procuring agency for approval prior to its use in shell fabrication for first article samples and production units. A traveler record shall be maintained which is integral or supplemental to the glass kit. Follow-on production prog
9、rams with the same manufacture and previously approved glass kit schedule shall not require approval again provided the contractor informs the contracting officer or the procuring agency in writing. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M
10、IL-C-70770 (3) 9999906 2022863 583 3.4.2 . Departures from the fabrication sequence specified in Drawing 12564879 require approval in writing from the contracting officer. It shall be the responsibility of the contractor to assure that approved glass kit schedules are being followed by qualified per
11、sonnel in the fabrication of container shells and installation of interior dunnage. At each in-process and final inspection level, traveler record shall be kept for each shell or cover processed through secondary lamination which records the date and personnel who performed each process or inspectio
12、n operation. 3.4.3 Rexiair Drocedure . When necessary and not prohibited by contract, the contractor shall prepare repair procedure for laminates detailing applicable factors of 3.4.1. The procedure shall also include preparation of surface to be repaired, finish after repair, and inspection to ensu
13、re removal of defects. Repair procedures shall apply only to defects greater than allowed in Drawing 12564879. in writing by the Government or procuring activity is required prior to use of repair procedures. Approval PAGE 6 TABLE I: SHEET OF Block: Delete “SHEET 1 of 1“ and substitute “SHEET 1 of 3
14、“. Add new sheet 2 and 3 as included pages 6A and 6B. Shipping and Storage Container: PA137 (125648391, Examination for defects: Delete “4.4.2.14“ and substitute “4.4.2.17“ under Inspection Method Reference. PAGE 9 4.4.2.1: Add new Major 105 as follows: 105 Pressure retention test failure . 100% . 3
15、.3.1.1 . . .Tester, 4.5 .la. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-d rl Li U ai d U Li Q Li tn H MIL-C-70770 (3) rn 9Ob 2022862 4LT rn m 8 cv I- I u) # $4 a, c *FI Q L, C O V o, b (d k O L, tD W rl Pa d di W o z L, k u VI C O . Y W W L, O
16、 ?I u a w h rl a k al E: Q) u, a -FI s cil c a E X k O 3 k O O 04 Y 10 (208) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I a, tn a m . c O -rl m 28 a Q, r: -4 rci a, a a, c O z l-l a -4 k a, L, l-i a k a, c a, b a z Y -4 s i! x k O 3 k O O pc 11
17、(20B) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl 8 YI I- W I f P i) W a &! a w O 6 F o t c O -ri JJ Q u -ri w -FI JJ k a, U rl (d 3 u -ri 3 I I JJH 3 OH H rl h rl Q k Q) c a, 0 a e Y -ri d E x k O 3 k O O PC 12 (29C) Provided by IHSNot for Re
18、saleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-70770 (3) = 9999906 2022873 422 rl 8 rl c W Oa P c O -4 JJ (d u a a, c -rl W a, a a, E: z O JJ kk h a -4 -2 E: 3 k O 3 k O O pc Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
19、S-,-,-i c c I rl rlcv m mm o L)H OH H .-I O L, kk -cv 14 (29E) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-70770 (3) a F p 5 - = 9999906 2022873 2T5 h r( Q k a, b-l a c Q, v -rl 2 $ k O 3 k O O tG Provided by IHSNot for ResaleNo reproduct
20、ion or networking permitted without license from IHS-,-,-MIL-C-70770 (3) 999990b 202287q 131 MIL-C-70770 (AR) AMENDMENT 3 PAGE 30 4.4.3.1, Delete in its entirety and substitute the following: “4.4.3.1 Structural workmaash iD testinq . The container structure shall be checked for workmanship in accor
21、dance with ASTM-D-2563, Level IV as specified on Drawing 12564879.“ 4.5.1: Line 8: Delete “Each container opening . retention test.“ Line 11: Delete “65 f 5“ and substitute “100 + 20“. * 4.5.3: Delete in its entirety and substitute the following: “4.5.3 pduewise drm . The PA 137, PA138, and PA141. c
22、ontainers shall be subjected to the edgewise drop test No. 3 of ARDEC drawing 8837375 followed by a pressure retention test. * 4.5.4: Delete in its entirety and substitute the following: 4.5.4 Cornerwise drop . The PA137, PA138, and PA141 containers shall be subjected to the counterwise drop test No
23、. 4 of ARDEC drawing 8837375 followed by a pressure retention test.“ PAGE 31 4.5.7, Delete in its entirety and substitute the following: 4.5.7 Destructive test mior to Droductiqn . Prior to production and as part of first article, workmanchip samples shall be taken and examined for compliance to 3.5
24、.1 and 3.5.2 and dimensionally for thickness. Each destructive test as specified in Drawing 12564879 shall first be performed on the base shell and then on the cover shell. All samples for destructive testing shall be taken along the O0 axis of the triaxial cloth. Sections shall also be taken at bra
25、cket secondary lamination as specified on the applicable drawing. Workmanship sp.ecimens shall be labeled by part number and section description. The specimens shall be retained as a standard for later use in maintaining good workmanship during production. If any of the specimens fail to meet the re
26、quirements listed in Drawing 12564879, the entire shell lot shall be rejected.“ 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70770 (AR) AMENDMENT 3 Add new paragraphs 4.5.8, 4.5.9, 4.5.10, 4.5.11: “4.5.8 Laminate strenuth tests . Samples
27、cut from the first article base and cover shall be tested for compression strength, tensile strength, and flexural strength according to the test methods specified in Drawing 12564879. Five specimens shall be taken from each cover and base to do each test. The average of the measured values shall be
28、 compared to the minimum physical property value listed in Drawing 12564879. If any of the average values fails to meet the requirement, the container lot shall be rejected. 4.5.9 Laminate hardness tests . The container laminate shall be tested for Barco1 hardness according to the test method in Dra
29、wing 12564879 to verify requirement of 3.3.4. 4.5.10 ,J,atch mec- . The latch assemblies on the container shall require no more than 30 pounds force to open and close. The force shall be applied and measured within one inch of each latch lever end in a direction perpendicular to the latch lever. The
30、 latch nuts shall be torqued to 100 + 20 inch pounds in the closed position prior to testing. The container shall be tested at ambient temperature and pressure. 4.5.11 -e weight test . The container laminate shall have a total glass fiber and triaxial content of 42-53% by weight when tested in accor
31、dance with ASTM D2584.“ The margins of this amendment are marked with an asterisk or vertical lines to indicate where changes (additions, modifica- tions, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatso
32、ever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Am-= Preparing activity: Army-AR (Project 1095-0282) 17 , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
