NAVY MIL-V-17462 B-1981 VALVE SAFETY BOILER (SHIPBOARD USE)《锅炉阀安全性(舰载使用)》.pdf
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1、MILITARY SPFCIFICATTON VALVE, SAFETY: BOSLEH (SHIPBQAqD USE) This specification is approved for qse by the Naval Sea Systems Commend, DepartmeRb of the Navy, gnd is aygila8le far u8e by alJ. Departments and Agencie$ of the Departmeht of Defense, 1. SCOPE I This speoificatloc cgverg l-l/j?-jnb and 2-
2、1/2-inch for steam drum and 8yperheater iervice at working pressures of 600 and 1500 pounds per square inch (ib/i?lz), r 1.2 Classification, Safety valvefi shg,L be of the folowing types, 1 c 1 aase s , and q i je 8, -pea i fi e4 se e. 6.2.1 : P Type I - Flanged, direct apr4ng loaded, POP typa, Type
3、 XI - Flanged, steam drum pilot actiiator, Type III Flanged, svperheab$r outL%t pilof actuated- Class 1 - 600 lb/in2 service. Clags 2 - 1300 lb/in2 servies, Size i - rl/2-inch. Size 2 - 2-1/2-inqh. 2, APPI,.ICpBLE DOCUMENTS 2.1 IssUes of documents, The fol$owing dpcuments, of the issue in effect on
4、dqte pf ifvitation fpr bids or rsqire$t for praposal, form a part of this specjfication to $he extetlit speoifie# heretn. O i I f SPECIFICATIONS MILITARY MIL-V-3 - Valveq, Fittings, and Flanges (Except for Systems MIL-R-196 - Repair farta, Accessoriqa, ,and Kits, Mechanical; Indtated Herein); Packag
5、ing of. Pgckaging Qf* Beneficial comments (recormendatlons, qdd.itigns, geletiona) ,?nd any pertinent data which may be of uae in impraving this document should be addressed to: Commander, Naval Sea Syateng -Command, SEA 31 12 , Department of the Navy, Washington, RC 20362 b using the self-addressed
6、 Standardization Document Improvement Propos84 DD Form 1426) appearing at the end of thks document or by letter. FSC 4820 THIS DOCUMENT CONTAINS /b PAGES. i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-V-174629 4 m 7777706 0272336 5 m MILITARY
7、 (Continued) MIL-S-901 - Shock Test3, (High-Impact) ; Shipboard Machinery, Equipment and Systems, Requirements for. MIL-S-1222 - Studs, Bolts, Hex Cap Screws,. and Nuts, MIL-P-15024 - Plates, Tags and Bands for Identification MIL-P-15024/5 - Plates, Identification, MIL-J-45208 - Inspecti,on System R
8、equirements, of Equipment. STA NDA RDS F EDE RA L FED-STD-H28 - Screw-Thread Standards for Federal Services. MILITARY MIL-STD-271 - Nondestructive Testing Requirements for MIL-STD-278 - Fabrication Welding and Inspection: and -. Metals. Casting Inspection and Repair for Machinery, Piping, and Pressu
9、re Vessels in Ships of the United States Navy. DRAWING NAVAL SEA SYSTEMS COMMAND NAVSHIPS 5000-S51O3-841622 - Valves, Boiler Safety, 300, 600, and 1500 Psi Nominal Pressure, Dimensional Standard for. (Copies of specifications, standards, drawings, and QUbliCabiOnS required by oontractors in connecti
10、on with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer .I 2.2 Other publications. The following documents form a part of this specification to the extent specified hePein. Unless otherwise indicated, the issue in effect on da
11、te of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MAT.ERIALS (ASTM) A 182 - Forged or Rolled Alloy-Steel Pipe Flanges, Forged A 216 - Carbon-Steel Castings Suitable for FusiQn Welding for A 217 - Martensitic Stainless Steel and Ally Steel Castings Fittin
12、gs, and Valves and Parts for High Temperature Service. Hig h-Temper atur e Service, for Pressure-Containing Pgr ts Suitable for High Temperature Service. (Applications for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103,) AMERICA
13、N NATIONAL STANDARDS INSTITUTE (ANSI) B16.5 - Steel Pipe Flanges, Flanged Valves, and Fittings. 2 Y Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 4 MIL-V-17Vh2B VB II 7779706 0272337 7 W (Application for copies shoilld be addressed to the American
14、 National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.) (Technical society and technical association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies. I 3. REQUIREMENTS 3.1
15、Qualification. Valves furnished under this specification-shall be products which are qualified for listing on the applicable qualified products list at time set for opening of bids (see 4.3 and 6.3). 3.2 Material. Materials used ir. the construction of safety valves shall be of the quality best suit
16、ed for the purpose intended. Material of bodies, bonnets, and bolt-studs or studs and nuts for inlet flanges and bonnets shall be as specified herein. The suitability of the material of all other parts shall be demonstrated by satisfactory performance of . the valves when tested as specified herein
17、and in service. 3.2.1 Bodies. Bodies of all safety valves shall be fabricated from ? the applicable grade or composition of material as follows: 1 For maximum steam drum pressure of 750 lb/in2 (class I), type I or type II, material shall be of cast steel conforming to ASTM A 216. For maximum steam d
18、rum pressure of 1600 lb/in2 (class 21, or maximum steam temperature of 875OF, material shall be of carbon molybdenum steel conforming to grade F1 of ASTM A 182 or grade WC1 of ASTM A 217; or of chromium molybdenum steel conforming to grades WC6 or WC9 of ASTM A 217 or grades F11 or F22 of ASTM A 182
19、. (at any pressure), material shall be of chromium molybdenum steel (weldable grade) conforming to grades WC6 or WC9 of ASTM A 217 or to grades F11 or F22 of ASTM A 182, or better. For superheated steam temperatures exceeding 975OF, material shall be of chromium molybdenum alloy steel or corrosion-
20、resisting steel of a composition satisfactory to the command or agency concerned. For superheated steam temperatures between 875OF and 975OF 3.2.2 Bqnnets. Bonnet material shall be in accordance with the fol lowing : E (a) Steam drum valve bonnets shall be of the same material as specified in 3.2.1.
21、 (b) Materials for superheater outlet spring loaded valve bonnets shall have a low mean coefficient of thermal expansion (less than 7.95 x in/in/OF). Where required, use of -cooling spools or other means to reduce thermal effects may be used. 3 Provided by IHSNot for ResaleNo reproduction or network
22、ing permitted without license from IHS-,-,- MIL-V-L74b2B 48 a 799990b 02723389 M MIL-V-l7462B( SH) 3.2.3 Bolts, studs, and nuts. Bolts, studs, and nuts shall conform to MIL-S-1222. In general, the following shall apply: (a) Up to 650F, use material grade 5 for bolting. (b) Up to 850F, use material g
23、rade B7 for bolting, (c) Up to 1000F, use material grade B16 for bolting and 2H for nuts. 3.2.4 Nozzles, discs, and adjusting rings. Nozzles, discs, and ad justin.g- rings shall be made from corrosion-resisting materials suitable for the service intended. 3.2.5 Recovered materials. Unless otherwise
24、specified herein, all equipment, material, and articles incorporated in the products covered. by this specification shall be new and shall be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered mate
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