1、1.1 trmsferring cryogenic liquids. his specification covers a nonvacuum insulated metai hose asseriDly for 2.1 The failowing documents, of the issue in effect on date of invitation or biCs or recpess for proposal, form a part of this specification to tie extent sgecified herein: sPElFIcmIoxs /-=-=-A
2、- Fede ral L-P-378 EE-;:-s-561 Solder, Silver F2F-3-638 Boxes, Fiberboard Plastic Fih (Polyethylene Thin Gage) RIL-cI-272lO Oxygen, Aviators Breathing, Liquid and Gas EZL-STD-129 3ZL-STD-120 m,-sm-8-31 Test Reports, Preparation of xi-f-id6 Cushioning, Anchoring, Blocking, and Waterproof ifig, ,/ lia
3、rking for Shipment and Storage IGentification Marking of US Military Property with Appropriate Test Methods Air Force 596671 (Coples of specifications, standards, drawings, and publications rzzed by suppliers in connection with specific procurement faqct.isns should be obtained from the procuring ac
4、tivity or as directed by the contracting Hose, Transfer, Cryogenic Liquid, Assembly of officer. ) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-27301D 36 m 999790b 021.171.131 b KCL -H - 27 30lD ( USAF) 1 Inch 12 Inch 3.1 Pz-em-oUUction. This
5、 specification makes provisions for preproductioz testing. 22-Inch Diameter 30-Inch Diameter 20 Inch/l5 ft length 30 Inch/L5 ft length 3.2 Desi$ i?:d mnstmction. const.mct.ed in accorcknce with Drawing 59C71 and as specifie herein for Tne hose assembly shall be esigned and Hose 15) Size Nandrel use
6、with fluids such as tye II liquib oxygen conforming to tDL-0-27210 ana type II iiquiii nitrogen conlorniing to -1y-li-11. (See 6.2.) - Maximum Bend Raius -n 3.c.1 ?erAz- The braid shall no% work loose during tests specifies hreii-. 3.2.2 Szirsl ” ay BeFC 0,” J-t.fi. Weigh% Per Linear Foot1 0.2 Milli
7、gram 0.5 Flilligram - I - =.* x.ctiflzztizi sf pro6uct. Cisntilicatiss in accoraaxs with NIL-STD-130 as specified for parts. sleeve. The hose assembly shall be marked for p _- rr.arhing shall be made in raised or stamped lettering on the retainer - J. :.-YE:s:. The hose assenbly shall be assembled a
8、nd finishes in a ._. -L-d+-y -,-, .I- MIL-H-27301D 36 7777906 02i.17435 3 W Pm-H-2730lD( USfLF) 4.3.1 Tole=.an,ces or pressures. Tolerances on pressure data shall be wikhir; 2 percent of actual values based on units of pounds per square inch gage. 4.b Prepra iner and outer braids where affixci! to e
9、nd iiitings to determine whether joint is smooih an continuou s. Two !ayers 1-1/2-pound density I-inch-thick ji5e:glcs mat Poyken No. 32U, or equal, wrapped over the entire length :o ho insulation Sjacin between each spiral shall not exceel 1-inch Spirci wire sucrd material Connector sleeve and nut
10、material Retainer rins material Corrusated hose material Seal material used between connector and retaining rins, cnd retaining ring and sleeve Type cad clcss of solder used Spirai wire guard dimensions of figure 1: A. B. C. Split guara retainer dimensions of figure 2: A. B. C. RESULT 7 i?- * Provid
11、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-H-27301D 36 = 7977706 0247Ll37 7 W MIL-H-273OlD(USAF) . MANDREL SIZE AS SPECIFIED FOR SIZE OF HOSE BEING TESTED . .SEE TABLE I -BEND RAOICJS MEASURED HERE SHALL NOT EXCEED SPECI Fi ED 1 IMIT SEE TABLE I
12、. . ? HOSE ROTATED * d 8O. / FIGURE 3 BEND RADIUS . - : . :- i. . . _ i _, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 4.6.6.1 Yce :nose shall be suspended vertically. of the hose shall be through a multilayer, stainless-steel wire wound,or sta
13、in- less-steel kcre mesh, cloth-type filter in which the wires have beer fme -iner 3ztr311t3 cm8itions asl are capable of retaining all particles whose ssdlest Z.iz:ensio-, is U rdcroas. Tne top of tne hose shall be comected to E. ccritE5zer OZ trictLxaethylene or other oxygen-safe hydrocarbon solve
14、nt witn a olirr,e 5; least 10 t*es that of the interior of the hose. ta 50 pai6 mC then flomd at the maximum flow rate through the hose ESC filter. Cie iiqiia ski1 then be transferred to the cmtainer st the top of the hose. Elis procewe shall be repeated 10 times. cleaeci md dried foliowing the comp
15、letion of the 10 cycles. The particulate matzer rexairsirig shall be inspected and shall not exceed the following: The discharge from the bottom . The 1icpi. shall be precszrizeti The filter shall be thoroughly s. b. C. 373 *Aide kith any dimension greater thag 1,000 microns. NQ fibmus particle with
16、 a lengtn greater than 6,000 microns The total of solids collected, both fobrous and particulate, shall not exceed the weight listed in table II for the hose size tested. 4.6.6.1.1 Failure of the hose to meet the cleanliness test specified in 4.6.6.1 soail require recleaning of the lot until a rssdo
17、m-selected hose fulfills the test. 4.7 InssectToa of the preservation-, packaging, packing, an marking for sk5sxezt. =ci storzge. Ee=;:s a2 section 5, or the documents specified therein. The inspection of the preservation, packaging, packing, cm Lh 4 u-AAL+, -9 ,.:-s 7 for shipnent and storage shall
18、 be in accormce with the require- 5. ?J.33IX POR DELIXEBY 5.1 CTecing. liaesc tests Specified in 4.6.6. Prior to packaging, hose assenblies shall complete the clean- 5.1.1 2reszn-et.ion and pchginn Preservation and packaging shall be level A or C (see 6.2). 5.1.2 Isrels A and C. Each hose assembly s
19、hall be encased in a sealed plastic bag fabricate6 from type II, grade C material conforming to L-P-378 hTiing a rriinkum thickaess of 6 mils (0.006 inch). Each bagged hose assembly shall be ptickaged one each in a Cy-pe I, class 2 fiberboard unit container confoming :o 22-636. k-L%k 222-3-636. ctrs
20、igh-t (uzcoiled). pcksge coile. ts5le .I. Closure and sealing of the container shall be in accordance Hose assemblies under 10 feet in length shall be pac?cage Hose assemblies exceeding 10 feet in length shall be Radii of the coils shall be not less than as specified irr 5.2 Puckling. Packing shall
21、be level A, By or C (see 6.2). 5.2,1 Levei A. sgecified in 5.1.2 shall not be overboxed for shipaent. Such hose assemblies shall be shipped in the unit container. lengbh, packaged as specified in 5.1.2, shall be overboxed in a type I, class 2 container conforming to PPP-B-636. Hose assemblies exceed
22、ing 10 feet in length, packaged as Hose assemblies under 10 feet in Closure and sealing shall meet PPP-3-636. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5.2.2 Le-el E. sTeci2ied in 5.1.2 shall not be overbxed for shipment. shall be shi2p in t
23、he unit container. ler.:. ad shigping containers shall be marked in accordance with KtL-STD- - 723. The nonenclature shall be as follows: tz the yint or delivery. Containers shall neet apslicable carrier nies - - - ;.z ZZ:-S:S: ratection. Blocking, bracing, and cushioning shall be as -I In adoition
24、to markings required by the contract or order (see EOSE ASSElBLY, NETsea-, . 6.2 Ckeeriag data. Procurement documents should specify the following: The hose assembly covered by this specification is intenea a. Title, number, and date of this specification. b. In the event it becomes necessary to cha
25、nge the rawing(s) to achieve the performaace requirements of the specification, the contractor shall immediately notify the contracting officer, with recomencia- tions for drawing changes to obtain the required performance. To tne extent approved, such changes shall be processed in accordance with t
26、he provisions of:rthe changes clause of this contract (See Drming 596671). 3.2). c. Xosinal lengths and part number of hose assembliesrequired (See d. e. f. Locztion aad conditions for preproduction testing (see 4.4). Required level of preservation and packaging, and packing (see sec- Special shipme
27、nt markings (see 5.4). tion 5). Y- o. Defhitims. definitions will apply. For the prupose of this specification, the following 6.3.1 FiO zarticle. particle vhose naXimu3 cross-sectional dimension is 4-0 microns. A fibrous particle is defined as a long, slender 11 = Provided by IHSNot for ResaleNo rep
28、roduction or networking permitted without license from IHS-,-,-fl 0.3.2 Ssc-,sa cvcle. cq-agesic iiqaid uner pressure from one vessel to another. A servicing cycle shall be defined as transferring Preparing Activity Air Force - -68 Project No. 3655-053 _._ . . 12 . - . .I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
