1、MIL-P-25877D 53 9 999990b 01i29352 .O 9 MI L-P-15877D f SHIPS1 . . 29 June 1973 EPCRSEDING IL-11-15877C (SHIPS) 29 June 1961 (See 6.5) HILITARY SPECIFICATION PIPE SUPPORT DEVICES (HANGERS AND SWAYBRACES, SHIPBOARD USE) 1, SCOPE # 1.i Cope. This specification covers constant support, variable support
2、 pipe hangers. and swaybraces for shipboard piping. # 1.2 Classification. angers and swaybraces for piping shall be of the following types and classes as specified (see 6.2): Type I - Constant support hangers. Class 1 - Coil spring. Class 2 - Belville spring. Type 11 - Variable support hangers. Clas
3、s 1 - Long coil spring. Class2 - Normal coil spring. Class 3 - Short coil spring. Class 4 - Belville spring. style A - 1/2 inch deflection. Style B - 1 inch deflection. Style C - 1-1/2 inch deflection. Type III - Swaybraces. Class 1 - Coil spring. Class 2 - Belville spring. Class 3 - hydraulic snubb
4、er. 2. APPLICABLE DOCUMENTS 2.1 I The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL W-D-1078 - Damping Fluid. Silicone Base (Dimethyl Polysiloxane). PPP-B-601
5、- Boxes, Wood, Cleated-Plywood. PPP-E-621 - Boxes, Wood, Nailed and Lock-Corner. PPP-8-636 - Boxes, Shipping, Piherboard. PPP-B-640 - Boxes, Fiberboard, Corrugated, Triple Wall. MIL-P-116 - Preservation, Methods of. MIL-R-196 - Repair Parts for Internal Col-ustion Enaines, Packaging of. MIL-S-901 -
6、Shock Tests, H.I. (High-Impact); Shipboard Machinery. Equipment and Systems, Requirements For. MIL-D-1000 - Drawings, Cnineering and Associated Lists. MIL-D-1000/2 - Drawings, Envineering And Associated Lists. MIL-bl-15071 - Hanuals, Technical: Equipments Ancl Systems Content Requirements MIL-P-1983
7、4 - Plates, Identification. !Ictal Foil, Ad?kcsive Backed. MIL-B-22191 - Barrier Materials, Transparent, Flexible, Ileat Sealable. MILITARY For. STANDARDS MILITARY MIL-STD-105 - Sanplfnq Procedures And Tables Por Inspection Dy Attributes. MIL-STD-129 - Marking For Shipment And Storage. MIL-STD-758 -
8、 Packaging Procedures For Submarine Repair Parts, Utilizing MIL-STD-1186 - Cushioning, Anchoring, Bracing, Blockins, And Waterproofing; With Appropriate Test Mctliods. Transparent, flexible, lient Scalablc Film. .- . FCC 5340 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
9、ut license from IHS-,-,-flIL-P-15877D 53 999990b 0429353 2 MIL-P-15877U (SIIIPC:) (Copies of spccificationc, standards, drawings, and publications required by suppliers in connection with specific procurcmcnt functions should he obtaine from the procuring activity or as directed by the contracting o
10、fficer.) # 2.2 Other ublications. The following documents farm a part of this specification to the extent-i- Unless otherwise indicated, the issue in effect an date of invitation for bids or request for proposal shall apply. UIJIFORM CLSSIICATIOX COPIITTET: Uniform Freight Classification Rules. (App
11、lication for copies should he addressed to the Jniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, Illinois 60606.1 NATIONAL MOTOR FREICIIT TRAFFIC ASSOCIATION, II4CORPORATED, AGEUT IJational Flotor rreiglit Classification. (Application for copies should be addressed to
12、the National Motor Freight Traffic Association, Inc., Agent, 1616 P Street, H.W., Washington, D.C. 20036.) 3. REQUI REPICWTS # 3.1 Canple for first article ins ection. Prior to beginning production a sample shall be tested as spece4 # 3.2 Description. # 3.2.1 The type I constant support hangers shal
13、l consist of an enclosed spring, compan- sating lever arm to obtain the constant support feature, and upper and lower attachment points . # 3.2.2 The type If variable support hangers shall consist of an enclosed spring and The enclosed ripring may be partially exposed along a upper and lower attachm
14、ent points. slot for the purpose of providinq an indicator arm alongside the spring or load scale. # 3.2.3 The type III sitaybraces shall consist of an enclosed double acting spring and attachment pints on each en of the swaybrace. cylinder, and hydraulic reservoir, and shall have attachment points
15、on both ends of the swaybrace. The hydraulic type shall consist of a piston, Iiydraulic fluid shall be in accordance with W-D-1078, 200 centistokes. I 3.3 taterials. rlagnesius and maqnesiun alloys shall not be used. In general, cast iron and aluminum alloys will not tic permitted for structural par
16、ts. caps may be cast of ductile iron Iiavinq an elongation of 12-1/2 percent and a tensile of 50,000 pounds per square inch gaqe ipsigi. Load carrying spring # 3.4 Construction. The design, fabrication, and asser;?bly of spring hangers and sway- braces shall be such that conpletc release of the pipi
17、ng load will be impossible in the event of a spring failure. 3.5 Factors of safet . With the exception of springs, all parts of the equipment shall haveamun d of safety of five based on the ultimate strength of the materials used. # 3.5.1 Types I and II hangers shall be capable of supporting an over
18、load of at least 150 percent of its mininum maximum load without evidence of failure. 3.6 S rin s. Springs shall be dcsiqned with a safe vorking stress for the type of spring matAFsec ancl tiie service invoveylications of less than 50 pounds, the total spring deflection silit11 he not mrc t?ian 5 in
19、ciics. 3.17 III way!races. 3.17.1 Swaybraces s!iall !se so Ansiqncd that whcn properly installed in a piping system they shall oppose the notion or vi!wation of the piping system due to externally applied forces. # 3.17.2 Swaybraces shall Le cayblc of providing, along the swaylrace axis, the followi
20、ng minimum movement in each dircction fror! a centcr position. defined as timt position at which tiic miaylroce exerts no force u?on the piping system: The center position is (ai Class 1 - 2 inclitls (5) Class 2 - i incil/ (c) Class 3 - 2 inc!ies L/Class 2 s*a:rbrares arc alao ivailable 1.ith 2 incl
21、ics movcmcrit in each clirection frm centcr, with a rr?durvc? rrstraininc: force. their rated capacity. “iicy -3.7 ilc utilized within 3-18 Paintinq. Ell hanmers an siU:lrscr? shall 1-r! tiaraiirihly riiintcd inside and out- side to protect all petal ?arts sron corrorlinu in ;n ocean atros;iierc. Th
22、c! vanufacturer shall use his standard nrirer an to? top toli ccn ter center i-nt t om 1 I 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-I,5877D 53 m 77777Db DY27358 Z m TfGP-15877D (SIIIPS) 4.5.2.1 After each shock has heen administered, t
23、he hanqcr or swaybrace should be inspected for danace. or swaybraces by threaded devices. 4.6 pparison inspytion. I.hcre items have not heen manufactured within one year prior to t e start ofpro uction, a pilot lot of two each of each class hanqcr and swaybrace shall be made using the reqular produc
24、tion line. only on items of hangers and swaybraces which have not heen manufactured within a year. inspection does not apply to delivery inspection on contract or orders. be inspec taaeorc6npmatGndi s spe ci f ica tion. Locknuts s!ia11 be used whcrevcr attachments are made to pipe hangers # The pilo
25、t model inspection shall be made This t 4.7 Ins ection of aration for deliver . The packaging, packing, and marking shall 5. PREPiiATIOt? FOR DELIWRY (The preparation for delivery requirements specified herein apply only for direct Government procurements. requirements of referenced docuriientr; lis
26、ted in section 2, see 6.4.) (see 6.2). For the extent of applicability of the preparation for delivery # 5.1 Preservation-packaginq. Preservation-packaging shall be level A or C, as specified # 5.1.1 Level A. t 5.1.1.1 Cleanfno, dryinq, unit rotection. Pipe support devices shall be cleaned, dried, a
27、nd individually unit protcct?rkhmethod III in accordance with HIL-P-116. Method I shall apply to those devices that incorporate a filled and sealed hydraulic system, faying surfaces, partially exposed springs, or other exterior surfaces susceptible to corrosion. Preservative types P-2, P-10, or P-19
28、 of HIGP-116 shall be used and applied in accordance with the criteria specified therein. constructed of corrosion resistant materials. hard boxes com-B-636, class weather-resistant, load type I or type II. closure shall be as specified for method V in accordance with the appendix to the box speci-
29、fication. in 5.2. t 5.1.2 Level 2. Preservation-packaninq of pipe support devices shall afford protection against corrG, deterioration, and physical damage during shipment from the supply source to the first receiving activity for imnediate use. packaging methods may be utilized when such meet the r
30、equirements of this level. Method III shall bc applied to devices # 5.1.1.2 Unit ackaqinq Devices weighing 80 pounds or less can be packaged in fiber- Devices exceeding 80 pouns shall be individually packed in containers specified Box The suppliers normal preservation- # 5.2 Packinz. Packinq shall l
31、ie level A, B or C as specified (see 6.2). # 5.2.1 General re irements for levels A and R. Ciishioning, anchoring, blocking, and bracing for mAandwSrproofin7 for Teve1 F. only shall be in accordance with HIL-STD-1186. t 5.2.2 Level A. Pipe support devices packaged as specified (see 6-21. shall be pa
32、cked in containersfrming to any one of the following specifications at the option of the contractor. specification PPP-B-601 PPP-B-U21 PPP-B-636 PPP-B-640 Con taincr Type or Class I.loo, cleated-plywood Overseas Class 2 wood, nailed and lock corner Pilcroard Weather-resistant Fiberboard, corruqate t
33、riplevall Class 2 Wood and plywood containers shall he closed, strapped, or 1;andcd in accorc?ance with the applicable container specification or wipcndix thcrrto. ril.criJoard containers shall be tlosed, waterproofod, and reinforced with twe as s)wcificd in tho apicndix to the anplicable container
34、specification :ith mct!iod V closure applyir?a to PIP-13-636 containers. wood-cleated plywood containers excccdinn 200 pourds qross weiqht shall be riodified by the addition of skids applied in accordance with the applicable container specification. PPP-8-636 containers specified in 5.1.1.2, closed
35、nn rrinforccd ali swcifind hcrcin, nay be used as shipping containers with no further nackinq rcmiirnc!. IWmU an 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-# # # # # # MIL-P-15877D 53 D 977990b 0429359 3 D 5.2.3 Level 0. Pipe support devices p
36、ackaged as specified (see 6.21, shall be packed in containersspecified in 5.2.2, except that the domestic type or class container shall be used, and waterproofing is not required. Containers shall hc closed and banded in accord- ance with tire applicable container specification or appendix thereto,
37、except that PPP-8-636 containers shall be closed method I as specified in the avpendix therein. Wood and wood- cleated plywood containers exceeding O0 pounds gross weight shall be modified with skids as specified in 5.2.2. containers with no further packing required. PPP-B-636 containers specified i
38、n 5.1.1.2 may be used as shipping 5.2.4 Level C. Pipe support devices packaged as specified (see 6.2), shall be packed in containerEeFtatlf? to the comnon carrier and which vil1 insure safe delivery at the destinations in a satisfactory condition at the lowest applicable rate. Containers or method o
39、f packing shall comply with Uniform Freight or National Motor Freight classification rules or regulations or other carrier rules as applicable to the mode of transportation. 5.2.4.1 Skid re ircments Wood constructed containers exceeding 200 pounds gross weight shall hxah&io - 2 by 4 inch nominal woo
40、d skids to facilitate handling during transportation and storage. 5.2.5 Re air arts and tools. Repair parts and tools shall be preserved-packaged, packed, and m kcaaGith MIL-R-196 for the levels specified as follows: Destination stock Shipboard Immediate use Preservation-Packaging A A C Packing D C
41、C 5.2.5.1 Submarine re air Level A preservation-packaging methods shall be modified to transparent he!%?iccordance with ?lIL-STD-758, except that transparent film shall conform to MIL-B-22131 as follows: Method i - Type II film. Method III - Type III film. I Packing of submarine repair parts shall b
42、e in accordance with 5.2.5. 5.3 %rkhp in addition to any special marking rfquire by the contract or order (see 6.21, interior packages and exterior containers shall he marked in accordance with MIL-STD-129 and MIL-STD-758. 5.4 Technical manuals. Technical manuals shall be packaged, packed, and marke
43、d for the level specified -6.2) in accordance with MIL-M-15071. 5.5 Drawin s. Drawings shall Le prepared for shipment in accordance with NIL-D-1000 for thc ledified (see 6.2). 6. NOTES 6.1 Intended use. Hangers and swaybraces specified herein are intended for USE in the support ana bracing7 shipboar
44、d piping systems. 6.2 Orderin9 data. Procurement documents should specify thc following: (a) Title, number, and date of this smcification. (b) Type and class rquire (sce 1.21. (c) If rod should be furnished (see 3.7). (d) Installation location or fabrication mark numlcr (if sucli information is requ
45、ired by the procurin9 or installinn activity) (see 3.10.1.1). (e) Whether production drawings arc remired (sec 3.11.2). (f) Required supporting force in pounds (sec 3.15.21. (g) &ad setting required (see 3.10.1.1 and 3.15.3). (h) (i) Levels of preservUtion-packaginn and !:acking rcquircd (sac 5.1, 5
46、.2, 5.4, and (j) Special marking required (scc 5.3). Thenual navernent of pipe in inches, direction of tlicrrial movenent frm cold to hot position (u? or dmm) for class 1 (sec 3.15.3). 5.5). 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-158
47、77D 53 - 999990b OY273b0 T tlIL-P-15877D (SIIIPS) # 6.3 First article inspection. I 6.3.1 Invitations for bids should provide that the Cavernncnt reserves the riaht to waive the requirement for samples for first article inspection as to thosc bidders offering a prorluct which has been previously pro
48、cured or tested by thc Government, and that bidders offering such proucts, who wish to rely on such production or test, nust furnish evidence with the bid that prior Government approval is presently appropriate for the pending procure- i ment. + 6.3.2 First article test waivcr. A waiver on first art
49、icle testing will be granted under the 0-ng con!Tztm:- (u) The pipe support equipment under procurement lias previously been tested within the 5 year period preceedinq the current contract and there has been no design or material changes in the equipment to be produced. The pipe support equipment under procurement has previously been teated and procured for t!avy use within the last 3 years regardless of the date of tcstinq and there lias been no desi
