1、AMSC N/A FSC 4730 NOT MEASUREMENT SENSITIVE MIL-STD-777F(SH) 30 March 2012 SUPERSEDING MIL-STD-777E(SH) 7 February 1986 DEPARTMENT OF DEFENSE STANDARD PRACTICE SCHEDULE OF PIPING, VALVES, FITTINGS, AND ASSOCIATED PIPING COMPONENTS FOR NAVAL SURFACE SHIPS Provided by IHSNot for ResaleNo reproduction
2、or networking permitted without license from IHS-,-,-MIL-STD-777F(SH) i FOREWORD 1. This standard is approved for use by the Naval Sea Systems Command and is available for use by all Departments and Agencies of the Department of Defense. 2. This standard establishes the requirement for piping system
3、 components on surface ships, in order to preclude the necessity for including a piping schedule in each Navy Ship Specification. This standard represents and includes the latest material requirements previously covered in the Ship Specifications. It is the intent to refer to this standard in sectio
4、n 505 in the Ship Specifications for all new Navy surface ships and the General Specifications for Overhaul of Surface Ships (GSO) for existing ships. 3. Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05S, 1333 Isaac Hull A
5、venue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil.
6、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-777F(SH) ii CONTENTS PARAGRAPH PAGE 1. SCOPE 1 1.1 Scope . 1 1.2 Category and group designation . 1 1.3 Superseded pages 1 2. APPLICABLE DOCUMENTS 1 2.1 General 1 2.2 Government documents 1 2.2.
7、1 Specifications, standards, and handbooks 1 2.2.2 Other Government documents, drawings, and publications . 5 2.3 Non-Government publications 7 2.4 Order of precedence 11 3. DEFINITIONS . 11 4. GENERAL REQUIREMENTS 11 4.1 Recycled, recovered, or environmentally preferable materials . 11 4.2 Nuclear
8、plant piping 11 4.3 Gauge piping . 12 4.3.1 Root valves . 12 4.4 Thermometer wells . 12 4.5 Maximum material temperature 12 4.6 Fire protection . 12 4.7 Seawater valves . 12 4.8 Valve approvals 12 4.9 Pressure temperature ratings . 12 4.10 Butt-weld requirements . 13 4.11 Long-radius elbows . 13 4.1
9、2 Steel valve seat and disc materials 13 4.13 Threaded joints 13 4.14 Fire-hardened fittings 13 4.14.1 Fire-hardened fitting requirements . 13 4.15 Silver-brazed fitting requirements . 14 4.16 Fasteners . 14 4.17 Brass fastener restriction . 16 4.18 Flange finishes 16 4.19 Weld joint requirements 16
10、 4.19.1 Titanium weld restrictions 16 4.20 Flange facings . 16 4.21 Welded branch outlets . 16 4.22 Branch connections . 17 4.23 Packing requirements 17 4.24 Bulkhead penetrations . 17 4.24.1 Titanium piping penetrations 17 4.24.2 Sleeve requirements . 17 4.25 Union joints . 17 4.26 Gaskets 18 Provi
11、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-777F(SH) iii PARAGRAPH PAGE 4.27 Missile systems . 19 4.28 Slip-on joints . 19 4.29 Steam generators . 19 4.30 Butterfly valves . 19 4.31 Fuel piping run rules . 19 4.32 Butt-welded fittings 20 4.33
12、Bessemer steel restriction 20 4.34 Flexible hose fittings . 20 4.35 Valve handwheel requirements . 20 4.36 Cast valve material 20 4.36.1 Weld repair of copper-nickel castings 20 4.37 Flange and fitting construction . 20 4.38 Hydrostatic testing of forgings 20 4.39 Casting inspections . 20 4.40 Large
13、 ball valves . 20 4.41 Flaring test 20 4.42 Approval of commercial items 21 4.43 GRP applications 21 4.44 Titanium applications 21 4.44.1 Flange face inserts 21 4.44.2 Insulating gasket kits 21 4.44.3 Insulating sleeves and washers . 21 4.44.4 Isolation testing 21 4.44.5 Material requirements 21 4.4
14、4.6 Non destructive testing of grade 2 titanium material for class P-2 piping 23 4.45 Marking . 23 4.46 Mechanically attached fittings (MAFs) 23 4.47 Belled-end fittings and slip-on couplings . 23 4.48 Commercial item requirements . 23 4.48.1 Commercial plumbing material 24 4.49 Relief valves . 24 4
15、.49.1 MIL-V-20065 relief valves 24 4.49.2 MIL-V-24332 relief valves 24 4.50 Stainless steel piping . 24 4.51 Valve actuators 24 5. DETAILED REQUIREMENTS . 24 5.1 Service categories and groups . 24 5.2 Using the tables . 24 5.3 Category and group listing 24 6. NOTES . 144 6.1 Intended use 144 6.2 Acq
16、uisition requirements 144 6.3 Subject term (key word) listing . 144 6.4 Changes from previous issue 144 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-777F(SH) iv LIST OF TABLES TITLE PAGE I. Fire-hardened fitting requirements (for systems i
17、n high fire hazard spaces) . 14 II. Fire-hardened fitting requirements . 14 III. Gasket materials and ratings . 18 IV. Gasket dimensions 18 V. Category A-1, Steam and steam drains, 1500 psig/1000 F 27 VI. Category A-2, Steam and steam drains, 1500 psig/775 F . 28 VII. Category A-3, Propulsion plant
18、saturated steam and steam drains, 600 to 1500 psig/775 F . 29 VIII. Category A-4 and A-7, Steam and steam drains, 600 psig/875 F . 31 IX. Category A-5, Steam and steam drains, 600 psig/775 F . 33 X. Category A-6, Steam and steam drains, 150 psig/775 F 35 XI. Category A-8, Steam and steam drains for
19、auxiliary boiler, reboiler, and waste heat boiler installation only, 150 psig/366 F (sat) 37 XII. Category A-9, Steam system overboard discharge, steam generator blowdown, 1500/600 psig/650 F 39 XIII. Category A-10, High pressure steam drains between low point trap, drain strainer orifice/orifice pl
20、ate assembly discharge stop-check valve and DFT or gland exhaust piping from turbines, discharge main, 100 psig/425 F 41 XIV. Category B-1, Feed systems, 600 psig, 400 F; 1200 psig, 475 F 43 XV. Category B-2, Propulsion plant saturated feed system, 600 to 2050 psig/300 F . 45 XVI. Category C-1 and C
21、-2, Freshwater, including feed, chilled water, condensate, electronic freshwater cooling, potable, freshwater firefighting, and gas turbine washdown, 200 psig/250 F 47 XVII. Category C-2, Freshwater, feed water and condensate, including potable, gas turbine washdown, 100 psig/250 F 50 XVIII. Categor
22、y C-3, Glass-reinforced plastic (GRP), 200 psig/150 F 53 XIX. Category C-4, Water mist fire fighting, 1500 psig/140 F 54 XX. Category C-5, High purity water, 150 psig/140 F . 56 XXI. Category D-1 and D-3, Seawater, including firemain, main and secondary drainage, ballast, 250 psig/150 F 57 XXII. Cat
23、egory D-2, Seawater missile injection system between freshwater accumulating tank and nozzles, main and secondary drainage, ballast and oily waste transfer, 400 psig/150 F 60 XXIII. Category D-4, Seawater, firemain, sodium hypochlorite disinfection treatment 62 XXIV. Category E-2, E-3 and U-1, Fuel
24、service, transfer, and stripping, 600 psig . 66 XXV. Category E-4 and U-1, Fuel service, transfer, and stripping, 200 psig. 68 XXVI. Category F-1, Lubricating oil, 150 psig/250 F 70 XXVII. Category G-1, G-3, G-4, and G-5, Hydraulic service, 3000 psig, 180 F . 73 XXVIII. Category G-2, G-6, and G-7, L
25、ow pressure hydraulic (including lines), 400 psig/180 F . 77 XXIX. Category G-8, Hydraulic service, 6000 psig/200 F . 80 XXX. Category H-1, Gasoline, 150 psig/150 F 81 XXXI. Category H-2, Cleaning fluid and contaminated aviation lubricating system, 100 psig/150 F . 83 XXXII. Category I-1, JP-5 fuel
26、service, filling transfer, tank stripping, and auxiliary JP-5, 200 psig/100 F . 85 XXXIII. Category J-1 and J-2, Air, nitrogen and helium, 6000 psig/150 F 87 XXXIV. Category J-3, Air and nitrogen, 600 psig/150 F . 89 XXXV. Category J-4, Air and nitrogen, 200 psig/150 F. 91 XXXVI. Category J-5, Air,
27、and bleed-off, 150 psig/550 F . 94 XXXVII. Category J-6, Air, gas turbine starting and prairie masker, 150 psig/450 F 95 XXXVIII. Category J-7, Air, prairie-masker, gas turbine starting, 100 psig/600 F 96 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
28、-,-MIL-STD-777F(SH) v TITLE PAGE XXXIX. Category J-8, Air deballast, 50 psig/400 F . 98 XL. Category J-9, Air, gas turbine bleed, anti-icing, 300 psig/950 F . 100 XLI. Category K-1, Gaseous oxygen, outside hull, 4500 psig/150 F 101 XLII. Category K-2, Gaseous oxygen, inside hull, 4500 psig/ambient 1
29、02 XLIII. Category K-3, Gaseous oxygen, 100 psig/ambient . 103 XLIV. Category K-4, Liquid oxygen and nitrogen, 6000 psig . 105 XLV. Category K-5, Liquid oxygen and nitrogen, 250 psig 106 XLVI. Category K-6, Mixed gas, 4500 psig/150 F . 107 XLVII. Category K-7, Propane, 200 psig . 108 XLVIII. Categor
30、y L-1, Cooling, (electronic equipment, diesel equipment, diesel engine, and so forth) ethylene glycol, freshwater solution, distilled water solution, 150 psig/200 F 109 XLIX. Category M-1, Seawater-washdown countermeasure system, 200 psig/100 F 112 L. Category N-1, Sprinkling system (dry) other than
31、 AFFF and magazine, 175 psig/100 F 114 LI. Category N-2, Magazine sprinkling system (wet and dry), 175 psig 115 LII. Category N-3, Miscellaneous seawater sprinkling systems (sprinkling other than AFFF, magazine, and countermeasure washdown), 175 psig . 116 LIII. Category O-1, Diesel, incinerator, an
32、d gas turbine exhaust, and sewage treatment, 1200 F 117 LIV. Category O-2, Diesel exhaust, subject to salt water spray for IR suppression, 850 F 119 LV. Category P-1, Boiler safety valve and super-heater outlet safety valve escape, 150 psig/850 F . 120 LVI. Category P-2, Nuclear steam generator esca
33、pe piping to transition joint, 150 psig/350 F . 121 LVII. Category P-3, Nuclear steam generator escape piping - transition to overboard, 150 psig/350 F . 122 LVIII. Category Q-1, Refrigerant piping, 30 inches vacuum to 300 psig/minus 85 F to plus 250 F . 123 LIX. Category R-1, Waste water, oily wate
34、r drainage, oily waste transfer, weather deck drainage systems, and contaminated deck drains, 50 psig/150 F . 125 LX. Category R-2, Chemical drains, 30 psig/150 F 128 LXI. Category R-3, Plumbing drains and vents, interior space deck drains and AC condensate drains, 50 psig/150 F 129 LXII. Category R
35、-4, Sewage collection, holding, and transfer (CHT) and vacuum collection, holding, and transfer (VCHT), 100 psig/150 F . 131 LXIII. Category S-1, Aqueous film-forming foam (AFFF) concentrate and AFFF/SW solution, 250 psig . 133 LXIV. Category T-2, HFP and Halon 1301 fire extinguishing systems, 1170
36、psig/140 F 136 LXV. Category T-3, CO2 actuation for HFP and Halon fire extinguishing systems, 2080 psig/200 F 138 LXVI. Category Y-1 and Y-2, Overflows, sounding tubes, vents and air escapes for JP-5, fuel, lubricating oil, oily tanks, 100 psig/150 F 139 LXVII. Category Y-3, Overflows, sounding tube
37、s, vents, and air escapes for other than fuel tanks freshwater (except potable) clean ballast, voids, etc., 50 psig/150 F 141 LXVIII. Category Y-4, Vents, reduction gear, 5 psig/ambient . 143 Refer to the index for system materials/components materials. Provided by IHSNot for ResaleNo reproduction o
38、r networking permitted without license from IHS-,-,-MIL-STD-777F(SH) 1 1. SCOPE 1.1 Scope. This standard covers requirements for basic piping system components on Navy surface ships. It is not the intention herein to include every conceivable component, valve, or fitting that might be used in the pi
39、ping system of a surface ship. The requirements invoked herein are not desirable goals but are minimum acceptable standards. 1.2 Category and group designation. This standard is broken down into basic service categories and groups. The notes contained in each individual category and group are prefac
40、ed with the category and group designation, and apply only to that specific category and group. General requirements are also included to supplement the specific category and group notes. General requirements apply to all service categories and groups where the content of the requirement is applicab
41、le. 1.3 Superseded pages. This standard will be maintained with all superseded categories and groups and list of categories and groups intact to ensure that when users are applying the standard to requirements that may predate current category and group issues, the applicable issues will be availabl
42、e. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this standard or recommended for additional information or as examples. While every effort has been m
43、ade to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following
44、 specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS HH-P-151 - Packing, Rubber-Sheet, Cloth-Insert QQ-N-281 - Nickel-Co
45、pper Alloy Bar, Rod, Plate, Sheet, Strip, Wire, Forgings, and Structural and Special Shaped Sections QQ-N-286 - Nickel-Copper-Aluminum Alloy, Wrought (UNS N05500) RR-C-901 - Cylinders, Compressed Gas: Seamless Shatterproof, High Pressure Dot 3AA Steel, and 3AL Aluminum TT-P-28 - Paint, Aluminum, Hea
46、t Resisting COMMERCIAL ITEM DESCRIPTIONS A-A-59860 - Valves, Cylinder, Gas (for Compressed or Liquefied Gases) DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment, and Systems, Requirements for MIL-PRF-1149 - Gasket Materials, Synthetic Rub
47、ber, 50 and 65 Durometer Hardness MIL-F-1183 - Fittings, Pipe, Cast Bronze, Silver-Brazing, General Specification for MIL-V-1189 - Valve, Gate, Bronze MIL-DTL-1222 - Studs, Bolts, Screws and Nuts for Applications Where a High Degree of Reliability is Required; General Specification for Provided by I
48、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-777F(SH) 2 MIL-T-1368 - Tube and Pipe, Nickel-Copper Alloy, Seamless and Welded MIL-V-2961 - Valves, Globe, Pressure Reducing, Gas Service MIL-V-15508 - Valves, Remote Control, Diaphragm Actuated (Fluid Syst
49、ems, 150 and 250 P.S.I. W.P. 140 F Maximum) MIL-C-15726 - Copper-Nickel Alloy, Sheet, Plate, Strip, Bar, Rod, and Wire MIL-T-16420 - Tube, Copper-Nickel Alloy, Seamless and Welded (Copper Alloy Numbers 715 and 706) MIL-R-16743 - Refrigerating Plants and Systems, Mechanical; and Refrigerating System Components - Dichlorodifluoromethane
