MIL_STD_777F.pdf

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

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 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 section 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 Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandards@navy.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.

mailto:CommandStandards@navy.mil� https://assist.dla.mil/� ii

CONTENTS

PARAGRAPH PAGE

1. SCOPE

1.1 Scope

1.2 Category and group designation

1.3 Superseded pages

2. APPLICABLE DOCUMENTS

2.1 General

2.2 Government documents

2.2.1 Specifications, standards, and handbooks

2.2.2 Other Government documents, drawings, and publications

2.3 Non-Government publications

2.4 Order of precedence

3. DEFINITIONS

4. GENERAL REQUIREMENTS

4.1 Recycled, recovered, or environmentally preferable materials

4.2 Nuclear plant piping

4.3 Gauge piping

4.3.1 Root valves

4.4 Thermometer wells

4.5 Maximum material temperature

4.6 Fire protection

4.7 Seawater valves

4.8 Valve approvals

4.9 Pressure temperature ratings

4.10 Butt-weld requirements

4.11 Long-radius elbows

4.12 Steel valve seat and disc materials

4.13 Threaded joints

4.14 Fire-hardened fittings

4.14.1 Fire-hardened fitting requirements

4.15 Silver-brazed fitting requirements

4.16 Fasteners

4.17 Brass fastener restriction

4.18 Flange finishes

4.19 Weld joint requirements

4.19.1 Titanium weld restrictions

4.20 Flange facings

4.21 Welded branch outlets

4.22 Branch connections

4.23 Packing requirements

4.24 Bulkhead penetrations

4.24.1 Titanium piping penetrations

4.24.2 Sleeve requirements

4.25 Union joints

4.26 Gaskets

iii

PARAGRAPH PAGE

4.27 Missile systems

4.28 Slip-on joints

4.29 Steam generators

4.30 Butterfly valves

4.31 Fuel piping run rules

4.32 Butt-welded fittings

4.33 Bessemer steel restriction

4.34 Flexible hose fittings

4.35 Valve handwheel requirements

4.36 Cast valve material

4.36.1 Weld repair of copper-nickel castings

4.37 Flange and fitting construction

4.38 Hydrostatic testing of forgings

4.39 Casting inspections

4.40 Large ball valves

4.41 Flaring test

4.42 Approval of commercial items

4.43 GRP applications

4.44 Titanium applications

4.44.1 Flange face inserts

4.44.2 Insulating gasket kits

4.44.3 Insulating sleeves and washers

4.44.4 Isolation testing

4.44.5 Material requirements

4.44.6 Non destructive testing of grade 2 titanium material for class P-2 piping

4.45 Marking

4.46 Mechanically attached fittings (MAFs)

4.47 Belled-end fittings and slip-on couplings

4.48 Commercial item requirements

4.48.1 Commercial plumbing material

4.49 Relief valves

4.49.1 MIL-V-20065 relief valves

4.49.2 MIL-V-24332 relief valves

4.50 Stainless steel piping

4.51 Valve actuators

5. DETAILED REQUIREMENTS

5.1 Service categories and groups

5.2 Using the tables

5.3 Category and group listing

6. NOTES

6.1 Intended use

6.2 Acquisition requirements

6.3 Subject term (key word) listing

6.4 Changes from previous issue

iv

LIST OF TABLES

TITLE PAGE

I. Fire-hardened fitting requirements (for systems in high fire hazard spaces) II. Fire-hardened fitting requirements III. Gasket materials and ratings IV. Gasket dimensions V. Category A-1, Steam and steam drains, 1500 psig/1000 °F VI. Category A-2, Steam and steam drains, 1500 psig/775 °F VII. Category A-3, Propulsion plant saturated steam and steam drains, 600 to 1500 psig/775 °F VIII. Category A-4 and A-7, Steam and steam drains, 600 psig/875 °F IX. Category A-5, Steam and steam drains, 600 psig/775 °F X. Category A-6, Steam and steam drains, 150 psig/775 °F XI. Category A-8, Steam and steam drains for auxiliary boiler, reboiler, and waste heat boiler installation only, 150 psig/366 °F (sat) XII. Category A-9, Steam system overboard discharge, steam generator blowdown, 1500/600 psig/650 °F XIII. Category A-10, High pressure steam drains between low point trap, drain strainer orifice/orifice plate assembly discharge stop-check valve and DFT or gland exhaust piping from turbines, discharge main, 100 psig/425 °F XIV. Category B-1, Feed systems, 600 psig, 400 °F; 1200 psig, 475 °F XV. Category B-2, Propulsion plant saturated feed system, 600 to 2050 psig/300 °F XVI. Category C-1 and C-2, Freshwater, including feed, chilled water, condensate, electronic freshwater cooling, potable, freshwater firefighting, and gas turbine washdown, 200 psig/250 °F XVII. Category C-2, Freshwater, feed water and condensate, including potable, gas turbine washdown, 100 psig/250 °F XVIII. Category C-3, Glass-reinforced plastic (GRP), 200 psig/150 °F XIX. Category C-4, Water mist fire fighting, 1500 psig/140 °F XX. Category C-5, High purity water, 150 psig/140 °F XXI. Category D-1 and D-3, Seawater, including firemain, main and secondary drainage, ballast, 250 psig/150 °F XXII. Category 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 XXIII. Category D-4, Seawater, firemain, sodium hypochlorite disinfection treatment XXIV. Category E-2, E-3 and U-1, Fuel service, transfer, and stripping, 600 psig XXV. Category E-4 and U-1, Fuel service, transfer, and stripping, 200 psig XXVI. Category F-1, Lubricating oil, 150 psig/250 °F XXVII. Category G-1, G-3, G-4, and G-5, Hydraulic service, 3000 psig, 180 °F XXVIII. Category G-2, G-6, and G-7, Low pressure hydraulic (including lines), 400 psig/180 °F XXIX. Category G-8, Hydraulic service, 6000 psig/200 °F XXX. Category H-1, Gasoline, 150 psig/150 °F XXXI. Category H-2, Cleaning fluid and contaminated aviation lubricating system, 100 psig/150 °F XXXII. Category I-1, JP-5 fuel service, filling transfer, tank stripping, and auxiliary JP-5, 200 psig/100 °F XXXIII. Category J-1 and J-2, Air, nitrogen and helium, 6000 psig/150 °F XXXIV. Category J-3, Air and nitrogen, 600 psig/150 °F XXXV. Category J-4, Air and nitrogen, 200 psig/150 °F XXXVI. Category J-5, Air, and bleed-off, 150 psig/550 °F XXXVII. Category J-6, Air, gas turbine starting and prairie masker, 150 psig/450 °F XXXVIII. Category J-7, Air, prairie-masker, gas turbine starting, 100 psig/600 °F v

TITLE PAGE

XXXIX. Category J-8, Air deballast, 50 psig/400 °F XL. Category J-9, Air, gas turbine bleed, anti-icing, 300 psig/950 °F XLI. Category K-1, Gaseous oxygen, outside hull, 4500 psig/150 °F XLII. Category K-2, Gaseous oxygen, inside hull, 4500 psig/ambient XLIII. Category K-3, Gaseous oxygen, 100 psig/ambient XLIV. Category K-4, Liquid oxygen and nitrogen, 6000 psig XLV. Category K-5, Liquid oxygen and nitrogen, 250 psig XLVI. Category K-6, Mixed gas, 4500 psig/150 °F XLVII. Category K-7, Propane, 200 psig XLVIII. Category L-1, Cooling, (electronic equipment, diesel equipment, diesel engine, and so forth) – ethylene glycol, freshwater solution, distilled water solution, 150 psig/200 °F XLIX. Category M-1, Seawater-washdown countermeasure system, 200 psig/100 °F L. Category N-1, Sprinkling system (dry) other than AFFF and magazine, 175 psig/100 °F LI. Category N-2, Magazine sprinkling system (wet and dry), 175 psig LII. Category N-3, Miscellaneous seawater sprinkling systems (sprinkling other than AFFF, magazine, and countermeasure washdown), 175 psig LIII. Category O-1, Diesel, incinerator, and gas turbine exhaust, and sewage treatment, 1200 °F LIV. Category O-2, Diesel exhaust, subject to salt water spray for IR suppression, 850 °F LV. Category P-1, Boiler safety valve and super-heater outlet safety valve escape, 150 psig/850 °F LVI. Category P-2, Nuclear steam generator escape piping to transition joint, 150 psig/350 °F LVII. Category P-3, Nuclear steam generator escape piping - transition to overboard, 150 psig/350 °F LVIII. Category Q-1, Refrigerant piping, 30 inches vacuum to 300 psig/minus 85 °F to plus 250 °F LIX. Category R-1, Waste water, oily water drainage, oily waste transfer, weather deck drainage systems, and contaminated deck drains, 50 psig/150 °F LX. Category R-2, Chemical drains, 30 psig/150 °F LXI. Category R-3, Plumbing drains and vents, interior space deck drains and AC condensate drains, 50 psig/150 °F LXII. Category R-4, Sewage collection, holding, and transfer (CHT) and vacuum collection, holding, and transfer (VCHT), 100 psig/150 °F LXIII. Category S-1, Aqueous film-forming foam (AFFF) concentrate and AFFF/SW solution, 250 psig LXIV. Category T-2, HFP and Halon 1301 fire extinguishing systems, 1170 psig/140 °F LXV. Category T-3, CO2 actuation for HFP and Halon fire extinguishing systems, 2080 psig/200 °F 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 LXVII. Category Y-3, Overflows, sounding tubes, vents, and air escapes for other than fuel tanks [freshwater (except potable) clean ballast, voids, etc.], 50 psig/150 °F LXVIII. Category Y-4, Vents, reduction gear, 5 psig/ambient

Refer to the index for system materials/components materials.

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 piping 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 prefaced 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 applicable.

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 available.

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 made 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 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-Copper 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, Heat 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 Rubber, 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

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 Systems, 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 (R-12) - Naval Shipboard

MIL-R-17131 - Rods and Powders, Welding, Surfacing

MIL-V-17360 - Valves, Cylinder, Gas, Carbon Dioxide Fire Extinguisher

MIL-V-17501 - Valves, Control Type, Magazine, and Hangar Deck Sprinkler

MIL-V-17547 - Valves, Check, Bronze

MIL-V-17848 - Valves, Pressure-Reducing, Steam Service

MIL-H-17902 - Hose, End Fittings and Hose Assemblies, Synthetic Rubber, Aircraft Fuels

MIL-V-18030 - Valves, Control, Air-Diaphragm-Operated (Complete with Instrumentation)

MIL-V-18110 - Valves, Gate Type, Steel (Sizes 2-1/2 Inches to 16 Inches)

MIL-B-18381 - Boilers, Steam, High Pressure, Naval Ship Propulsion

MIL-V-18436 - Valves, Check: Bronze, Cast-Iron, and Steel Body

MIL-DTL-19772 - Valves, Temperature Regulating, Automatic, Naval Shipboard

MIL-PRF-20042 - Flanges, Pipe, Bronze (Silver Brazing)

MIL-V-20064 - Valve, Nonferrous, for Use with Halogenated Refrigerants

MIL-V-20065 - Valves, Angle, Pressure Relief, Naval Shipboard, for Steam Service

MIL-R-21252 - Rubber Sheet, Solid, Synthetic, Shipboard Water Evaporator Gasketing

MIL-DTL-22050 - Gasket and Packing Material, Rubber, for Use with Polar Fluids, Steam, and Air at Moderately High Temperatures

MIL-V-22052 - Valves, Stop and Stop Check, Globe, Angle, and Y Pattern, Cast or Forged Carbon or Alloy Steel, Outside Screw and Yoke (Sizes 2-1/2 Inches and Larger)

MIL-V-22549 - Valves, Angle, Relief, for Gas and Oxygen Service (Sizes 2-Inches IPS and Below); Naval Shipboard

MIL-V-22682 - Valves, Astern (for Shipboard Use)

MIL-V-22687 - Valves, Ball, Naval Shipboard, for Air, Nitrogen, Helium or Hydraulic Service (Sizes 2-1/2 Inches NPS and Below)

MIL-S-22698 - Steel Plate, Shapes and Bars, Weldable Ordinary Strength and Higher Strength: Structural

MIL-PRF-23236 - Coating Systems for Ship Structures

MIL-R-24085 - Refrigerant Unit, Centrifugal for Air Conditioning

MIL-T-24107 - Tube, Copper (Seamless) (Copper Alloy Numbers C10100, C10200, C10300, C10800, C12000, C12200, and C14200)

MIL-V-24109 - Valves, Globe, Angle, Quick Change Cartridge Trim, High Pressure (H.P.) Hydraulic and Pneumatic (Sizes 1/8 – 1-1/4 Inches)

MIL-F-24202 - Fittings, Butt Welding, Seamless or Welded, 70-30 Copper-Nickel Alloy, 700 PSI, 200 °F

MIL-F-24227 - Fittings and Flanges, Cast Bronze, Silver-Brazing Suitable for Ultrasonic Inspection

MIL-T-24270 - Thermowells for Thermometers and Electrical Temperature Sensors General Specification for

MIL-V-24272 - Valve Manifolds, High Pressure Gas Reducing

MIL-V-24332 - Valves, Angle Relief, for Liquid Service (Naval Shipboard)

MIL-V-24336 - Valves, Pressure Reducing, for Oxygen Service

MIL-V-24384 - Valves, Pressure Regulating, for Low Pressure Air or Nitrogen Systems

MIL-P-24396 - Packing Material, Braided PTFE (Polytetrafluoroethylene)

MIL-V-24439 - Valves, Oxygen, Helium and Helium Oxygen Mixture, High Pressure for Gas Services

MIL-V-24509 - Valves, Flanged, Ball and Plug for Sewage and Sea Water Service

MIL-V-24569 - Valve, Quick-Closing, for Fuel and Oil and Auxiliary Steam Emergency Shutdown

MIL-E-24572 - Extinguisher, Fire, Bromotrifluoromethane (Halon 1301) System Components (Fixed Pipe, Pneumatically Actuated, Naval Shipboard Use)

MIL-V-24578 - Valves, Globe, Pressure Instrument, Stem Test Connection, Union End

MIL-V-24586 - Valve, Needle, Size 1/4-Inch and 1/2-Inch, Union Bonnet Construction

MIL-P-24608 - Pipe, Fittings, and Adhesive Kits, Glass-Reinforced Thermosetting Epoxy Resin for Shipboard Piping Systems

MIL-V-24619 - Valve, Quick Closing, for Saturated Steam Service

MIL-V-24624 - Valves, Butterfly, Wafer and Lug Style, Shipboard Service

MIL-V-24630/1 - Valves, Check, In-Line, Non-Reversible Installation for Hydraulic Fluid and Lubricating Oil Fluid

DOD-V-24657 - Valve Actuator, Direct Coupled, Gear Driven Electrically Powered for Naval Shipboard Propulsion and Auxiliary Systems (Metric)

DOD-V-24675 - Valves, Boiler Blow Service, Monel, Shipboard Use

MIL-P-24691 - Pipe and Tube, Carbon, Alloy and Stainless Steel, Seamless and Welded, General Specification for

MIL-P-24691/1 - Pipe and Tube, Carbon Steel, Seamless

MIL-P-24691/2 - Pipe and Tube, Chromium-Molybdenum Steel, Seamless

MIL-P-24691/3 - Pipe and Tube, Corrosion-Resistant, Stainless Steel, Seamless or Welded

MIL-V-24694/1 - Valve, Hydraulic Relief, 1.5 - 35 Bar, 150 LPM Cartridge Type

MIL-V-24694/2 - Valve, Hydraulic Relief, 1.5 - 35 Bar, 10 LPM Cartridge Type

MIL-V-24695 - Valve, Hose Assembly, and Adapter, Vent and Test Hydraulic Service, General Specification for (Metric)

MIL-DTL-24696 - Gasket, Sheet, Non-Asbestos

MIL-DTL-24704 - Flanges, Four Bolt Square, Hydraulic General Specification for

MIL-G-24716 - Gaskets, Metallic-Flexible Graphite, Spiral Wound

MIL-DTL-24788 - Coupling Assembly, Semi-Dry-Break, Quick-Disconnect Fuel With or Without Continuity Switch

MIL-PRF-32187 - Gasket, Hybrid, Flat and Raised Face Flange, Fire Resistant, Shipboard Use

MIL-DTL-32258 - Nut, Self-Locking (Ring Type Non-Metallic Insert), Heavy Hex, Controlled Root Radius, Nickel-Copper Alloy

MIL-PRF-32307 - Valve, Quarter Turn, Triple-Offset, Torque Seated, Shipboard Use

MIL-DTL-81940/4 - Valve, Sampling and Bleed, Hydraulic, 3000 PSI Non-Aircraft Applications

MIL-V-85245/1 - Valve, Relief, Hydraulic, High Response Inline

MIL-V-85245/2 - Valve, Relief, Hydraulic, High Response Cartridge Type

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-22 - Welded Joint Design

MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited)

MIL-STD-769 - Thermal Insulation Requirements for Machinery and Piping

MIL-STD-792 - Identification Marking Requirements for Special Purpose Components

MIL-STD-1330 - Precision Cleaning and Testing of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, and Hydrogen Systems

MIL-STD-2035 - Nondestructive Testing Acceptance Criteria

DEPARTMENT OF DEFENSE HANDBOOKS

MIL-HDBK-267 - Guide for Selection of Lubricants and Hydraulic Fluids for Use in Shipboard Equipment

(Copies of these documents are available online at https://assist.dla.mil/quicksearch/ or https://assist.dla.mil.)

https://assist.dla.mil/quicksearch/�

2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications 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.

MILITARY STANDARD DRAWINGS

MS18307 - Laterals, Forged Steel Socket Welding 3000 PSI at 1000 °F (Max.)

Steam Service

MS18308 - Alloy Steel Socket Welding Flanges and Flanged Nipples, 1/4 Inch and 3/8 Inch, 600 Pounds Per Square Inch at 850 °F (Maximum)

(Copies of these documents are available online at https://assist.dla.mil/quicksearch/ or https://assist.dla.mil.)

NAVAL SEA SYSTEMS COMMAND (NAVSEA) DRAWINGS

505-8289963 - Titanium Seawater Piping, Electrical Isolation to Prevent Galvanic Corrosion

803-1385541 - Valves, Bronze, Flanged, In-Line & Angle Stop & Stop Check 2-1/2 - 12

803-1385623 - Valves, Bronze, Flanged Globe Y Pattern 250 PSI WOG

803-1385637 - Valves, Bronze, Flanged, Check 250 PSI WOG

803-1385707 - Valve, Scupper, Gag Type

803-1385711 - Valve, Hose Globe, In-Line & Angle 1-1/2 In 250 PSI

803-1385712 - Valve, Hose Globe, In-Line and Angle 2-1/2 In. - 250 PSI

803-1385714 - Valve, Bronze ¼ - 2, Union End, Gate

803-1385721 - Valve, Bronze ½ - 2, Union End, Swing Check

803-1385789 - Fitting, Deck Drain

803-1385850 - Piping, Instrument Pressure for All Services

803-1385866 - Penetration, Bulkhead and Deck

803-1385880 - Fitting, Cu-Ni Alloy, Slip On Sleeve for Brazing, Arc, or Gas Welded, 200 PSI at 150°

803-1385884 - Unions, Fittings and Adapters, Butt and Socket Welding, 6000 PSI WOG

NPS

803-1385892 - Flanges, Bronze, for Use with Butterfly Valve

803-1385917 - Temperature Indicator and Thermowell

803-1385948 - Unions, Sil Brzg, OD, 3000 PSI, WOG for UT Insp

803-1385950 - Bosses for Non-Ferrous Piping for UT Insp

803-1385965 - Valve, 3-Way By-Pass, 1/2 - 1 BW & SW 900 LB ASME

803-2177140 - Valves, 2-1/2 Inch Globe-Stop, Stop Check, Lift Check, and Throttle, Butt Weld – 1500 ASME

803-2177141 - 3" & 4" Globe Stop, Stop Check, Lift Check, 900 ASME Valves - BW

803-2177142 - 5" & 6" BW - 900 ASME Valves https://assist.dla.mil/quicksearch/�

803-2177518 - 900 LB ASME Gate Valve, 5, 6, 8, 10, 12, 14, & 16 Sizes

803-2177525 - ¼ - 2 BW & SW 900 LB ASME Valve

803-2177917 - Valves, Bronze Flanged, Gate 250 PSI WOG

803-4384536 - Valves Bronze; ¼" – 2" Union End Globe; In-Line & Angle; Stop, Stop Check & Needle

803-5001003 - Valve, Ball, ¼ Thru 2-1/2 Inch Straight and 3-Way Line 700 PSI

803-5001004 - Valve, Ball, 3 Thru 6 Inch Straight Line 400 PSI

803-5184193 - Steel Globe Valves 1/4 to 2 NPS 1500 Class

803-5959276 - Valve, Tank Sounding Tube

803-6397247 - Valve, Globe 1/8 Thru 1-1/2 Ni-Al-Brz 6000 PSI

803-6397304 - Valve, Globe, Instrument Isolation,, CRES and NICU Alloy, .25 Inch, 6000 PSI

803-6397404 - Halon System Actuation Check Valve

803-6397408 - Sprinkler Valve 1 1/2 Thru 8" Size Assembly & Details

803-6397430 - Fitting, Socket Welded, Copper Nickel 400 PSI

803-6983468 - Diaph Oper Check Valve, 3/8 In. Thru 8 In. Size, Assembly & Details

803-6983491 - Valve, Ball, Marine Composite

803-6983512 - Flanges, STD CU-NI Socket-Weld, Slip-on, and Welding Neck

803-7063850 - Tailpiece Assemblies, Union End (BW, SW, SB), 1/4 - 2 inch, 400 PSI

WOG

803-7106793 - Butterfly Valve, Low Pressure, High Performance

804-4444650 - Sewage Discharge Connection, Surface Ship

804-5284201 - Reinforced Rubber Gasket Material for Pipeline Joints

810-1385791 - Fitting, Air Test for Soundings

810-1385848 - Deck Plates, Sounding, Filling Connections

810-1385880 - Fittings, Copper-Nickel Alloy, Slip-on Sleeve for Brazing, Arc, or Gas Welded 200 PSI at 150°

810-1385888 - Unions, Butt, Socket-Weld, OD Tubing, 6000 PSI

810-1385889 - Unions, Sil Brzg, OD Tubing

810-1385899 - Fitting, Refrigerant Piping

810-1385915 - Fitting, Pipe Composition, Flanged

810-1385992 - Flanges, CUNI 250 PSI WOG Welding Nec

(Copies of these documents are available from the applicable repositories listed in NAVSEA S0005-AE-PRO- 010/EDM. Copies of NAVSEA S0005-AE-PRO-010/EDM are available from the Naval Logistics Library, 5450 Carlisle Pike, Mechanicsburg, PA 17055 or online at https://nll1.ahf.nmci.navy.mil.)

https://nll1.ahf.nmci.navy.mil/�

NAVAL AIR WARFARE CENTER

A404734 - Fitting Assembly Data, Sil-Braze & Socket Weld “O”-Ring Seal

(Copies of this document are available from the Naval Air Warfare Center, Aircraft Division, Lakehurst, NJ 08733-5000.)

NAVAL SEA SYSTEMS COMMAND (NAVSEA) INSTRUCTIONS

NAVSEAINST 9210.36 - Steam Plant Cleanliness Control

(Copies of this document are available online at www.navsea.navy.mil.)

NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS

S6430-AE-TED-010 - Technical Directive for Piping Devices, Flexible Hose Assemblies;

Volume 1

S6430-AE-TED-020 - Piping Devices, Flexible; Rubber Insert Sound Isolation Couplings

(RISIC)

S9AA0-AB-GOS-010,

Section 505

- General Specifications for Overhaul (GSO) of Surface Ships, Section 505, General Requirements for Piping Systems

S9AA0-AB-GOS-010,

Section 542

- General Specifications for Overhaul (GSO) of Surface Ships, Section 542, Gasoline and JP-5 Systems

S9074-AR-GIB-010/278 - Requirements for Fabrication Welding and Inspection, and Casting Inspection and Repair for Machinery, Piping, and Pressure Vessels

S9086-CJ-STM-010 - NSTM Chapter 075, Fasteners

S9086-CM-STM-010 - NSTM Chapter 078, Volume 1 – Seals

S9086-RK-STM-010 - NSTM Chapter 505, Piping Systems

S9086-VH-STM-010 - NSTM Chapter 635, Thermal, Fire, and Acoustic

S9505-A1-DDT-010 - NAVSEA Design Practices and Criteria Manual for Titanium Piping Systems

T9500-AA-PRO-110 - NAVSEA Design Practices and Criteria Manual for Glass Reinforced Plastic (GRP) Piping Systems, Chapter 505

(Copies of these documents are available from the Naval Logistics Library, 5450 Carlisle Pike, Mechanicsburg, PA 17055 or online at https://nll1.ahf.nmci.navy.mil.)

2.3 Non-Government publications. The following documents 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.

ASME INTERNATIONAL

ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS ½ through NPS 24

ASME B16.9 - Factory-Made Wrought Buttwelding Fittings

ASME B16.11 - Forged Fittings, Socket-Welding and Threaded

ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings

ASME B16.24 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500 and 2500 http://www.navsea.navy.mil/� https://nll1.ahf.nmci.navy.mil/�

ASME B16.34 - Valves Flanged, Threaded and Welding End

ASME B31.1 - Power Piping

ASME B46.1 - Surface Texture (Surface Roughness, Waviness, and Lay)

ASME Boiler and Pressure Vessel Code

(Copies of these documents are available from ASME International, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900 or online at www.asme.org.)

ASTM INTERNATIONAL

ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc- Coated, Welded and Seamless

ASTM A105/A105M - Standard Specification for Carbon Steel Forgings for Piping Applications

ASTM A106/A106M - Standard Specification for Seamless Carbon Steel Pipe for High- Temperature Service

ASTM A167 - Standard Specification for Stainless and Heat-Resisting Chromium- Nickel Steel Plate, Sheet, and Strip

ASTM A181/A181M - Standard Specification for Carbon Steel Forgings, for General-Purpose Piping

ASTM A182/A182M - Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High- Temperature Service

ASTM A193/A193M - Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

ASTM A194/A194M - Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

ASTM A213/A213M - Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A216/A216M - Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service

ASTM A217/A217M - Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service

ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

ASTM A269 - Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A276 - Standard Specification for Stainless Steel Bars and Shapes

ASTM A312/A312M - Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A335/A335M - Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service http://www.asme.org/�

ASTM A351/A351M - Standard Specification for Castings, Austenitic, for Pressure-Containing Parts

ASTM A376/A376M - Standard Specification for Seamless Austenitic Steel Pipe for High-Temperature Central-Station Service

ASTM A403/A403M - Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

ASTM A449 - Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

ASTM A479/A479M - Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

ASTM A530/A530M - Standard Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe

ASTM A743/A743M - Standard Specification for Castings, Iron-Chromium, Iron-Chromium- Nickel, Corrosion Resistant, for General Application

ASTM B61 - Standard Specification for Steam or Valve Bronze Castings

ASTM B88 - Standard Specification for Seamless Copper Water Tube

ASTM B210 - Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

ASTM B280 - Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service

ASTM B363 - Standard Specification for Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings

ASTM B367 - Standard Specification for Titanium and Titanium Alloy Castings

ASTM B369 - Standard Specification for Copper-Nickel Alloy Castings

ASTM B381 - Standard Specification for Titanium and Titanium Alloy Forgings

ASTM B443 - Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219)* Plate, Sheet, and Strip

ASTM B444 - Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 and UNS N06852) and Nickel-Chromium- Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube

ASTM B600 - Standard Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces

ASTM B705 - Standard Specification for Nickel-Alloy (UNS N06625, N06219 and N08825) Welded Pipe

ASTM B861 - Standard Specification for Titanium and Titanium Alloy Seamless Pipe

ASTM B862 - Standard Specification for Titanium and Titanium Alloy Welded Pipe

ASTM D5363 - Standard Specification for Anaerobic Single-Component Adhesives

(AN)

ASTM F467 - Standard Specification for Nonferrous Nuts for General Use

ASTM F468 - Standard Specification for Nonferrous Bolts, Hex Cap Screws, and Studs for General Use

ASTM F1347 - Standard Specification for Manually Operated Fueling Hose Reels

ASTM F1370 - Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard

ASTM F1387 - Standard Specification for Performance of Piping and Tubing Mechanically Attached Fittings

ASTM F1508 - Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services

ASTM F1793 - Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service

(Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West Conshohocken, PA 19428-2959 or online at www.astm.org.)

MANUFACTURERS STANDARDIZATION SOCIETY (MSS) OF THE VALVE AND FITTINGS

INDUSTRY

MSS SP-55 - Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components - Visual Method for Evaluation of Surface Irregularities

MSS SP-97 - Integrally Reinforced Forged Branch Outlet Fittings – Socket Welding, Threaded, and Buttwelding Ends

MSS SP-119 - Factory-Made Wrought Belled End Pipe Fittings for Socket-Welding

(Copies of these documents are available from MSS, 127 Park Street, N.E., Vienna, VA 22180-4602 or online at www.mss-hq.org.)

NACE INTERNATIONAL

SP0286 - Electrical Isolation of Cathodically Protected Pipelines

(Copies of this document are available from NACE International, 1440 South Creek Drive, Houston, Texas 77084- 4906 or online at www.nace.org.)

NATIONAL AEROSPACE STANDARDS COMMITTEE (NA/NAS)

NASM 17828 - Nut, Self-Locking, Hexagon, Regular-Height, (Non-Metallic Insert) 250 Deg F, Nickel-Copper Alloy

NASM 25027 - Nut, Self-Locking, 250 Deg F, 450 Deg F, and 800 Deg F

(Copies of these documents are available from Aerospace Industries Association, 1250 Eye Street NW, Washington, DC 20005-3924 or online at www.aia-aerospace.org.)

SAE INTERNATIONAL

SAE-AMS3216 - Fluorocarbon (FKM) Rubber, High-Temperature - Fluid Resistant, Low Compression, Set 70-80

SAE-AMS3218 - Fluorocarbon (FKM) Rubber, High-Temperature-Fluid Resistant, Low Compression, Set 85 to 95

SAE-AMS5561 - Steel, Corrosion and Heat-Resistant, Welded and Drawn or Seamless and Drawn Tubing, 9.0Mn - 20Cr - 6.5Ni - 0.28N, High-Pressure Hydraulic http://www.astm.org/� http://www.mss-hq.org/� http://www.nace.org/� http://www.aia-aerospace.org/�

SAE-AMS7259 - Rings, Sealing, Fluorocarbon (Fkm) Rubber High-Temperature-Fluid Resistant Low Compression Set 85 to 95

SAE-AMS7276 - Rubber: Fluorocarbon (FKM) High-Temperature-Fluid Resistant Low Compression Set for Seals in Fuel systems and Specific Engine Oil Systems

SAE-AMSC6183 - Cork and Rubber Composition Sheet; for Aromatic Fuel and Oil Resistant Gaskets

SAE-AMS-H-81200 - Heat Treatment of Titanium and Titanium Alloys

SAE-J20 - Coolant System Hoses

SAE-J514 - Hydraulic Tube Fittings

SAE-J518 - Hydraulic Flanged Tube, Pipe, and Hose Connections, Four-Bolt Split Flange Type

SAE-J995 - Mechanical and Material Requirements for Steel Nuts

SAE-J2270 - Ship Systems and Equipment--Threaded Fasteners--Inspection, Test, and Installation Requirements

SAE-J24714 - Fluid Systems--Connector Tubes--General Specification and Part Standard

(Copies of these documents are available from SAE World Headquarters, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or online at www.sae.org.)

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC-SP 10 - Near-White Blast Cleaning

(Copies of this document are available from SSPC Publication Sales, 40 24th Street, 6th Floor, Pittsburgh, PA 15222-4656 or online at www.sspc.org.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. DEFINITIONS

This section is not applicable to this standard.

4. GENERAL REQUIREMENTS

4.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.

4.2 Nuclear plant piping. For piping directly associated with a nuclear plant, the requirements of sections 210 and 9890-1 of the applicable ship specifications apply in lieu of the requirements specified herein.

http://www.sae.org/� http://www.sspc.org/�

4.3 Gauge piping. Pressure gauge piping requirements are specified in 803-1385850, except the root valve may be eliminated when the gauge is located on a gauge board that is mounted on a component and is not more than 3 feet from the root connection of the gauge. The use of siphons and flexible connections as a means for providing flexibility is not mandatory, provided the configuration of gauge piping is such that the flexibility requirements of 803-1385850 are met and objectionable vibrations are not transmitted to the gauges on the gauge board. When the gauge/isolation test valve is not mounted on the gauge board, the jam nut and washer shall be removed.

Gauge/isolation valves to 803-6397304 may be used as alternatives to the MIL-V-24578 valves required by 803-1385850.

4.3.1 Root valves. Root connections for instrumentation piping shall be in accordance with the following:

a. Where possible, root connections shall be made into the side of pipe or pressure vessels to minimize problems due to air binding or accumulation of foreign materials in the gauge lines.

b. Root connections between the outlet and root valve shall be at least ¼ inch nominal pipe size (NPS).

c. Root valves shall be of the same design, material, and rating as valves in the system to which they are connected, except stellite-faced seats are not required for root valves in steam and drain lines. However, the hardness for these seats shall be Brinell (BHN) 225 minimum.

d. The overall size and weight of the root valves shall be kept to a minimum.

4.4 Thermometer wells. Thermometer wells shall conform to the requirements of 803-1385917 and MIL-T-24270 using materials selected which are compatible with the materials specified for the intended service.

Materials other than those specified are acceptable, provided that they are entirely satisfactory in all respects and are approved by NAVSEA.

4.5 Maximum material temperature. The pressure listed for the service categories contained in this schedule, in general (although not in all cases), are system operating pressures. Temperatures indicated, with the exception of Category A – steam systems, are the maximum expected operating temperature. In the case of most cold systems, ambient temperatures of 150 °F have been used. For maximum allowable stresses for piping materials at various temperatures, see section 505 of ship specs or GSO.

4.6 Fire protection. The piping systems, including support structures in high fire hazard spaces, shall be designed to remain operational for a specified temperature, time, and heat flux. The design specification shall specify the time, temperature, and heat flux for which various piping systems are to remain operational for each particular region within the ship. High fire hazard spaces are those compartments protected by high-pressure water mist, heptafluoropropane (HFP), Halon 1301, or CO2 flooding systems.

4.7 Seawater valves. Valves intended for seawater service shall have nickel-copper alloy stems, seats, discs, disc nuts, hinge pins, and side plugs, as applicable. For valves in sizes 2½ inches and above, discs with a nickel-copper alloy facing of ⅛-inch minimum thickness are acceptable in lieu of solid nickel-copper alloy.

Nickel-copper-aluminum or nickel-copper-silicon alloy may be used as an alternative to nickel-copper. Bronze valves for other than seawater service may have bronze stems, seats, discs, disc nuts, hinge pins, and side plugs, as applicable.

4.8 Valve approvals. For valves (except valves on many mechanical standard drawings), fittings, and flanges, contractor’s designs previously approved for comparable installations may be substituted for those specified, subject to justification to and approval by NAVSEA. Extensions of the applicability of previously granted waivers or approvals for reasons of shipbuilding expediency are not valid.

4.9 Pressure temperature ratings. For ferrous and special alloy components, selection of the pressure series shall be made in accordance with the pressure temperature ratings of ASME B16.5 or ASME B16.34, as applicable, unless the series is specifically designated in the applicable category. Butt-welded or socket-welded fittings shall be of a schedule or thickness compatible with the service conditions.

4.10 Butt-weld requirements. Butt-welded ends for valves, fittings, and flanges shall not be used for sizes smaller than 1¼ inches, except where previously approved by NAVSEA, or where inert gas consumable insert type butt-welds are used in sizes down to and including ½ inch, subject to qualification of the procedure by the activity doing the welding. Socket-welded end valves, fittings, and flanges for P-1 piping may only be used in sizes up to and including 2 inches. For welded-end steel valves, fittings, and flanges, the carbon content shall not exceed

0.35 percent.

4.11 Long-radius elbows. The use of long-radius elbows are required to minimize flow turbulence. The use of short-radius elbows is acceptable where space conditions do not permit long-radius elbows.

4.12 Steel valve seat and disc materials. Steel valves, not covered by military specifications or standard drawings in steam and feed systems normally operating at gauge pressures of 150 psi and above, shall have seat and disc seating surfaces hard faced using material in accordance with type MIL-RCoCr-A of MIL-R-17131, or the equivalent. Steel valves in steam and feed systems below 150 psi at saturation temperatures shall have either hard-faced operating seat and disc seating surfaces as specified above, or seats and discs hardened by heat treatment.

Special normally open valves not used for throttling, such as solenoid trips, shall have seating surfaces suitable for the service application.

4.13 Threaded joints. Straight threaded connections with seals are permitted in all systems where unions or union-ended components are listed, subject to any notes pertaining to unions. Open-ended piping with threaded or union connections shall be secured to prevent accidental rotation of the threaded joints. Tapered pipe threads may be used only in the following areas:

a. Connections to commercial equipment, such as washing machines and drinking water coolers, which are not essential to the ship under combat conditions and where failure would not create a hazard to personnel or the surrounding area, or affect the operation of other vital equipment.

b. Pipe plugs of a material compatible with the parent equipment material in sizes ¾ inch and below used for applications where gauge pressures do not exceed 50 psi.

c. Instrumentation, controls, vents and filling, and drain connections for applications where gauge pressures are 50 psi and below where fluids handled are neither toxic or dangerous nor could cause atmospheric contamination and which would not cause, in the event of failure, a major breakdown of the equipment, create a hazard to the surrounding area, nor affect the operation of other vital equipment.

d. For equipment where taper pipe threads are specified in RR-C-901, A-A-59860, MIL-V-17360, ASTM F1347, MIL-H-17902, and MIL-DTL-24788.

e. In unpressurized connections.

f. Quick disconnect couplings for air hose connections and spray heads for washdown countermeasure systems, magazine sprinkling, and wet sprinkling systems.

g. Male NPT to 37-degree flare adapter fittings in accordance with SAE-J514 (3-piece assembly including nut, sleeve, and tube) used for pneumatic (air) connection of control components to signal lines (125 psi maximum), where materials and fittings are specifically approved.

4.14 Fire-hardened fittings. Fire-hardened fittings are defined as fittings which are welded, or which comply with ASTM F1387, including satisfactory accomplishments of fire testing, and are approved by NAVSEA for the intended application. Where categories and groups have been combined from previous revisions of this standard as reflected in 5.3, only one designation from those combined categories/groups will be identified in table I and table II.

4.14.1 Fire-hardened fitting requirements. Fire-hardened fittings are required in the systems listed in table I below, where piping is located within compartments which are served by CO2 fixed flooding or Halon 1301 fire extinguishing systems.

TABLE I. Fire-hardened fitting requirements (for systems in high fire hazard spaces).

Category and group Service H-2 Contaminated aviation lube oil

J-4, J-8 Air and nitrogen, deballast (Copper and copper-nickel piping) J-7 Prairie masker, gas turbine start (Copper and copper-nickel) K-7 Propane (Copper and copper-nickel piping)

Fire-hardened fittings are required throughout the ship in the systems listed in table II below.

TABLE II. Fire-hardened fitting requirements.

Category and group Service C-4 Water mist

C-1, D-1 Firemain (see notes C-1-14, D-1-11) E-2, E-4 Fuel

F-1 Lubricating oil G-1, G-2, G-8 Hydraulic oil

H-1 Gasoline

I-1 JP-5

J-1, J-3, J-5, J-6, J-9 Air and nitrogen J-4, J-7 Air [steel and corrosion-resistant steel (CRES) piping]

K-1, K-2, K-3 Gaseous oxygen K-4, K-5, K-6 Liquid oxygen, mixed gas

N-1 Sprinkling system (dry) N-2 Magazine sprinkling system (wet and dry) R-1 Oily waste drains S-1 Aqueous film forming foam (AFFF) and AFFF/seawater T-2 HFP and Halon 1301 fire extinguishing systems T-3 HFP and Halon, actuation

4.15 Silver-brazed fitting requirements. Silver-brazed fittings shall be of the pre-inserted ring type, except as follows:

a. In sizes ½-inch NPS and below.

b. Fittings without pre-inserted brazing rings may be used in the refrigeration system (see Category Q-1).

c. Expanded copper sleeves without pre-inserted brazing rings may be used in the inner wall of a double-walled gasoline piping system.

d. Joints for bellmouth to pipe for tailpipes within tanks.

e. Bronze fittings without pre-inserted brazing rings may be used in the air conditioning chilled water condensate drain system.

4.16 Fasteners. This standard identifies material to be used in flange bolting. Additional guidance for generic fastener application is provided in S9086-CJ-STM-010/075.

a. Flanged joint fastener external threads shall be UNC-2A for fasteners up to 1-inch diameter. Flanged joint fastener external threads shall be UNC-2A or 8-UN-2A for fasteners larger than 1-inch diameter. Flanged joint internal threads shall be UNC-2B for fasteners up to 1-inch diameter. Flanged joint fastener internal threads shall be UNC-2B or 8-UN-2B for fasteners larger than 1-inch diameter.

b. All Level I fasteners shall meet the requirements of MIL-DTL-1222.

c. When applicable, each category/group lists if any commercial fastener specifications are allowed to be used for fasteners in that group/category. For all categories/groups in this standard, if the fastener requirements are identical to a fastener in a National Aerospace Standards-Military (NASM) sheet, the NASM Part Identification Number shall be used. Alternative material may be substituted, subject to approval by the cognizant technical authority.

d. Nuts on flanged joints in all tanks, non-accessible bilge regions, or locations that are otherwise inaccessible for examination or routine replacement in-service where temperatures do not exceed 450 °F shall be self-locking with at least one thread length extending beyond the insert when the nut is drawn up tight. The self-locking nuts shall be rated for the temperature of the service.

e. For studs that will be set in a hole with thread-locking compound, stud nut ends shall be Class 2A fit with Class 2B nuts, or Class 3A fit with Class 3B nuts. The setting end of the studs shall be Class 3A in Class 3B holes locked in place with a thread-locking compound in accordance with ASTM D5363. The procedure for installing studs with a thread-locking compound shall meet the requirements of SAE-J2270. The use of National Class 5 interference fit threads in accordance with ASME B1.12 shall be limited to the setting end of studs where the design temperature exceeds that allowed for thread-locking compounds.

f. Nickel-copper (Ni-Cu, UNS N04400) fasteners shall be used where the joints are not readily accessible for examination or maintenance in-service due to location of the fasteners below floor plates and in tanks or in other hidden areas where carbon steel, brass, or bronze fasteners are specified or where subject to seawater spray or submergence. Where nickel-copper fasteners do not meet the strength requirements of the joint, nickel-copper-aluminum (Ni-Cu-Al, UNS N05500) in accordance with MIL-DTL-1222, Grade 500 shall be used. If nickel-copper-aluminum fasteners are used and there are tapped holes as part of the bolted joint, the installing document shall provide torque limits for the fasteners used in the tapped holes to prevent damaging the internal threads of the tapped holes.

g. Nickel-copper-aluminum fasteners shall be in accordance with MIL-DTL-1222.

h. Flanged joint threaded fasteners in pump rooms and at all AFFF Pumping, Reserve and Transfer, and

Distribution Stations shall use either nickel-copper or nickel-copper-aluminum material as appropriate to provide the required fastener strength. This does not apply to CRES piping systems, or component piping.

i. Hull integrity piping connections are defined as all flanged joints from the hull up to and including the inboard flange of the hull valve. Included in this category are the bonnet joints of the hull valves and both line flanges and the bonnet joint of the first valve (such as a blowout valve) in branch lines connected to piping between the hull valve and the hull connections. Such connections shall be as follows:

(1) All bolted hull integrity piping connections, as defined above, shall be fitted with nickel-copper-aluminum alloy fasteners in accordance with MIL-DTL-1222 and with self-locking nuts in accordance with

MIL-DTL-32258.

(2) For services involving integrity of the hull against the sea, as defined in item i above, energy absorption shall be provided by making the mounting fasteners essentially constant strength throughout their length.

Uniform strength in bolt-studs can be achieved by:

(i) Using continuously threaded bolt-studs (the preferred method with those having roll-formed threads being stronger than those with cut threads).

(ii) Using bolt-studs with roll-formed threads whose unthreaded shank diameter is equal to the pitch diameter.

(iii) Reducing the unthreaded shank diameter of bolt studs to the minor diameter when cut threads are used.

(3) Bonnet joints for the hull valves are not required to be designed for energy absorption, unless the valve bonnet joints receive essentially the same loading from hydraulic shock as the outboard flanged joint or use the same size fasteners as the flanged joint.

j. Where individual categories specify both non-ferrous and ferrous fasteners, the ferrous fasteners may be used on steel and stainless steel bolted joints unless non-ferrous fasteners are required for considerations discussed above.

4.