USACE / NAVFAC / AFCESA / NASA UFGS-22 15 13.16 (February 2009)
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Preparing Activity: NASA Superseding
UFGS-22 15 13.16 40 (August 2008)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 22 15 13.16
HIGH-PRESSURE COMPRESSED-AIR PIPING, PIPING COMPONENTS, AND VALVES, STAINLESS
02/09
NOTE: This specification covers the requirements for aboveground and underground
piping systems and certain components with pressure ratings of 2410, 13790,
and 41370 kilopascal 350, 2,000, and 6,000 pounds per square inch, gage.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)AISC 325(2005) Manual of Steel Construction][AMERICAN WELDING SOCIETY (AWS)AWS A5.13(2000) Specification for Surfacing Electrodes for Shielded Metal Arc WeldingAWS WHB-2.9(2004) Welding Handbook; Volume Two - Welding Processes][ASME INTERNATIONAL (ASME)ASME B16.10(2000; R 2003) Face-to-Face and End-to-End Dimensions of ValvesASME B16.11(2005) Forged Fittings, Socket-Welding and ThreadedASME B16.25(2007) Standard for Buttwelding EndsASME B16.34(2004) Valves - Flanged, Threaded and Welding EndASME B16.5(2003) Standard for Pipe Flanges and Flanged Fittings: NPS 1/2 Through NPS 24ASME B16.9(2007) Standard for Factory-Made Wrought Steel Buttwelding FittingsASME B18.2.2(1987; R 2005) Standard for Square and Hex NutsASME B18.2.4.6M(1979; Errata 1981; R 2003) Metric Heavy Hex NutsASME B19.3(1991; Addenda A 1994; Addenda B 1995) Safety Standard for Compressors for Process IndustriesASME B31.3(2008) Process PipingASME B36.10M(2004) Standard for Welded and Seamless Wrought Steel PipeASME B36.19M(2004) Stainless Steel PipeASME B40.100(2005) Pressure Gauges and Gauge AttachmentsASME BPVC SEC II-C(2007; Addenda 2008) Boiler and Pressure Vessel Code; Section II, Materials, Part C - Specifications for Welding Rods, Electrodes and Filler MetalsASME BPVC SEC IX(2007; Addenda 2008) Boiler and Pressure Vessel Code; Section IX, Welding and Brazing QualificationsASME BPVC SEC VIII D1(2007; Addenda 2008) Boiler and Pressure Vessel Code; Section VIII, Pressure Vessels Division 1 - Basic Coverage][ASTM INTERNATIONAL (ASTM)ASTM A 105/A 105M(2005) Standard Specification for Carbon Steel Forgings for Piping ApplicationsASTM A 106/A 106M(2008) Standard Specification for Seamless Carbon Steel Pipe for High-Temperature ServiceASTM A 181/A 181M(2006) Standard Specification for Carbon Steel Forgings, for General-Purpose PipingASTM A 182/A 182M(2008a) Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature ServiceASTM A 193/A 193M(2008b) Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature ServiceASTM A 194/A 194M(2008b) Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or BothASTM A 216/A 216M(2008) Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature ServiceASTM A 234/A 234M(2007) Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature ServiceASTM A 307(2007b) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile StrengthASTM A 312/A 312M(2008a) Standard Specification for Seamless, Welded, and Heavily Worked Austenitic Stainless Steel PipesASTM A 403/A 403M(2007a) Standard Specification for Wrought Austenitic Stainless Steel Piping FittingsASTM A 563(2007a) Standard Specification for Carbon and Alloy Steel NutsASTM A 563M(2007) Standard Specification for Carbon and Alloy Steel Nuts (Metric)ASTM B 148(1997; R 2003e1) Standard Specification for Aluminum-Bronze Sand CastingsASTM B 370(2003) Standard Specification for Copper Sheet and Strip for Building ConstructionASTM B 749(2003) Standard Specification for Lead and Lead Alloy Strip, Sheet and Plate ProductsASTM C 920(2008) Standard Specification for Elastomeric Joint SealantsASTM E 1(2007) Standard Specification for ASTM Liquid-in-Glass ThermometersASTM F 568M(2007) Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners][ISA - INTERNATIONAL SOCIETY OF AUTOMATION (ISA)ISA 7.0.01(1996) Quality Standard for Instrument Air][MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY (MSS)MSS SP-25(2008) Standard Marking System for Valves, Fittings, Flanges and UnionsMSS SP-53(1999; R 2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges and Fittings and Other Piping Components-Magnetic, Particle Examination MethodMSS SP-54(1999; R 2007) Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components, - Radiographic Examination MethodMSS SP-55(2006) Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components - Visual Method for Evaluation of Surface IrregularitiesMSS SP-58(2002) Standard for Pipe Hangers and Supports - Materials, Design and ManufactureMSS SP-61(2003) Pressure Testing of Steel ValvesMSS SP-69(2003; R 2004) Standard for Pipe Hangers and Supports - Selection and Application][PIPE FABRICATION INSTITUTE (PFI)PFI ES 11(2003; R 2004) Permanent Marking of Piping MaterialsPFI ES 21(2004) Internal Machining and Fit-up of GTAW Root Pass Circumferential Butt WeldsPFI ES 3(2004) Fabricating Tolerances][U.S. GENERAL SERVICES ADMINISTRATION (GSA)FS FF-S-325(Int Amd 3) Shield, Expansion; Nail, Expansion; and Nail, Drive Screw (Devices, Anchoring, Masonry)FS HH-I-558(Rev C) Insulation, Blocks, Boards, Blankets, Felts, Sleeving (Pipe and Tube Covering), and Pipe Fitting Covering, Thermal (Mineral Fiber, Industrial Type)FS L-C-530(Rev C) Coating, Pipe, Thermoplastic ResinFS WW-P-541(1990e; Am 1) Plumbing Fixtures]1.2 SUBMITTALS
NOTE: Review Submittal Description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] Submit the following
in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-01 Preconstruction Submittals
Submit Proposed Deviations from specified instructions in accordance with paragraph entitled,
"General Requirements," of this section.
SD-02 Shop Drawings
Submit Detail Drawings in accordance with paragraph entitled "General Requirements," of this
section.
SD-03 Product Data
Submit manufacturer's catalog data for the following items in sufficient detail and scope to
verify compliance with the requirements of the contract documents.
Underground Piping Materials
Aboveground Piping Materials
Air Compressors
Manual Valves
Piping Specialties
Miscellaneous Materials
Supporting Elements
SD-06 Test Reports
Submit test reports for the following items in accordance with the paragraph entitled, "Compressed
Air Systems Testing," of this section.
Pressure Testing
System Testing
Acceptance Tests
Preliminary Tests
SD-07 Certificates
Submit certificates for the following items showing conformance with the referenced standards
contained in this section.
Underground Piping Materials
Aboveground Piping Materials
Air Compressors
Manual Valves
Piping Specialties
Miscellaneous Materials
Supporting Elements
1.3 GENERAL REQUIREMENTS
NOTE: If Section 23 00 00 AIR SUPPLY, DISTRIBUTION, VENTILATION, AND EXHAUST
SYSTEMS and/or Section 23 05 48 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING
AND EQUIPMENT and/or Section 40 17 30.00 40 WELDING GENERAL PIPING are not included
in the project specification, applicable requirements from each, as required,
should be inserted and the following applicable paragraph deleted.
[Section 23 00 00 AIR SUPPLY, DISTRIBUTION, VENTILATION, AND EXHAUST SYSTEMS applies to work specified in this
section.]
[Section 23 05 48 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT applies to work specified in this
section.]
[Section 40 17 30.00 40 WELDING GENERAL PIPING applies to work specified in this section.]
Submit Detail Drawings for the following high-pressure compressed air systems consisting of fabrication and assembly
drawings for all parts of work in sufficient detail to enable the Government to check conformity with the requirements
of the contract documents.
Where the Contractor proposes to deviate from specified instructions, submit the Proposed Deviations to the Contracting
Officer for approval.
PART 2 PRODUCTS
2.1 UNDERGROUND PIPING MATERIALS
NOTE: Select type of piping to suit project requirements.
Drawings shall show size, rating, and other details of piping requirements not
covered in the specifications for specific project application.
Specified protection of underground piping is dependent upon 100-percent detection
and elimination of coating faults to preclude accelerated metal loss at point
failures of coating in possibly brackish ground water. Piping protection should
be ensured by soil resistance surveys of proposed pipe routes and by providing
cathodic protection in the form of magnesium anode piles or rectifier impressed-current
and high silicon iron anode pile systems when soil resistivity indicates need.
Normally, soil resistivity of 10,000 ohms or less at pipe laying depth to 1500
millimeter 5 feet below pipe laying depth indicates need for cathodic protection.
Give special consideration to situations where dielectric coupling isolation
from connected systems is not practicable due to system pressures. Check typical
dielectric coupling manufacturing source for pressure ratings. Where piping
is not isolated, normal impressed current of 0.1 milliamp per .09 square meter
square foot of surface protected will increase several fold. Check rectifier
systems. Specify piles to be made up of 45 kilogram 100-pound anodes (a single
50 millimeter 2-inch outside diameter piece).
The following system pressures are for nonshock loading and are based on ASME
B31.3, zero corrosion factor, welded joints and following materials stress values:
138 Megapascal 20,000 pounds per square inch (psi) for ASTM A 106/A 106M and
ASTM A 312/A312M, Grade TP 316 or TP 347. Reduce system pressures if largest
specified pipe size is increased, if service temperatures are increased over
38 degrees C, 100 degrees F, or if alloy specifications are changed.
Materials for piping systems with pressures to 69 Megapascal at 38 degrees C
10,000 psi at 100 degrees Fmay be specified in accordance with MSS SP-75 and
MSS SP-65. The same specification may be used for 41 Megapascal 6,000 psi systems
with pipe sizes larger than DN80 3 inches.
The following materials specifications do not take into account material temperatures
less than minus 29 degrees C 20 degrees F. Pipe trade regards seamless piping
in sizes less than DN50 2 inches as tubing. Tubing sources are limited and
tubing costs in small quantities may range from 3 to 5 times pipe costs. Project
costs frequently may be reduced and deliveries improved by oversizing lines
to be cataloged as piping.
Operating temperature limit of Type BCS-PS and Type SS-PS is 66 degrees C 150
degrees F, limited by polyethylene sheath and adhesive.
2.1.1 Type BCS-PS-6000
Pipe or tube DN15 through DN80 1/2 through 3 inches: XXS, seamless, black carbon steel sheathed with thermoplastic
(polyethylene), conforming to ASTM A 106/A 106M, Grade B and ASME B36.10M
Fittings DN15 through DN40: 62 Megapascal 1/2 through 1-1/2 inches: 9,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M and ASME B16.11
Fittings DN50 through DN80 2 through 3 inches: XXS, long radius, butt weld, black carbon steel, conforming to
ASTM A 234/A 234M, Grade WPB, and ASME B16.9
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with thermally fitted shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repairs in accordance with manufacturer's instructions. Electrical flaw detection testing at
the factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be
not less than 13,000 volts.
2.1.2 Type BCS-PS-2000
Pipe or tube DN15 through DN80 1/2 through 3 inches: Schedule 40, seamless, black carbon steel sheathed with
thermoplastic (polyethylene), conforming to ASTM A 106/A 106M, Grade B, and ASME B36.10M
Fittings DN15 through DN80: 20 Megapascal 1/2 through 1-1/2 inches: 3,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M, and ASME B16.11
Fittings DN50 through DN80 2 through 3 inches: Schedule 40, long radius, butt weld, black carbon steel, conforming
to ASTM A 234/A 234M, Grade WPB, and ASME B16.9
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with thermally fitted shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repairs in accordance with manufacturer's instructions. Electrical flaw detection testing at
the factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be
not less than 13,000 volts.
2.1.3 Type BCS-PS-350
Pipe or tube DN15 through DN610 1/2 through 24 inches: Schedule 40, seamless, black carbon steel sheathed with
thermoplastic (polyethylene), conforming to ASTM A 106/A 106M, Grade B, and ASME B36.10M.
Fittings DN15 through DN80: 20 Megapascal 1/2 through 1-1/2 inches: 3,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M and ASME B16.11.
Fittings DN50 through DN610 2 through 24 inches: Schedule 40, long radius butt weld, black carbon steel, conforming
to ASTM A 234/A 234M, Grade WPB, and ASME B16.9.
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with thermally fitted shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repairs in accordance with manufacturer's instructions. Electrical flaw detection testing at
the factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be
not less than 13,000 volts.
2.1.4 Type SS-PS-6000
Pipe or tube DN15 through DN80 1/2 through 3 inches: XXS, seamless, corrosion-resistant steel sheathed with
thermoplastic (polyethylene), conforming to ASTM A 312/A 312M, Grade TP 316, and ASME B36.19M.
Fittings DN15 through DN40: 62 Megapascal 1/2 through 1-1/2 inches: 9,000-pound, forged corrosion-resistant
steel, socket weld, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.11.
Fittings DN50 through DN80 2 through 3 inches: XXS, long radius, buttweld, corrosion-resistant steel conforming
to ASTM A 403/A 403M, WP 316 and ASME B16.9.
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with thermally fitted shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repairs in accordance with manufacturer's instructions. Electrical flaw detection testing at
the factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be
not less than 13,000 volts. Adhesives shall contain no free chloride ions.
2.1.5 Type SS-PS-2000
Pipe or tube DN15 through DN80 1/2 through 3 inches: Schedule 40S, seamless, corrosion-resistant steel sheathed
with thermoplastic (polyethylene), conforming to ASTM A 312/A 312M, Grade TP 316.
Fittings DN15 through DN40: 20 Megapascal 1/2 through 1-1/2 inches: 3,000-pound, forged corrosion-resistant
steel, socket weld, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.11.
Fittings DN50 through DN) 2 through 3 inches: Schedule 40S, long radius butt weld, corrosion-resistant steel
sheathed with thermoplastic (polyethylene), to ASTM A 403/A 403M, and WP 316, and ASME B16.9.
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with factory-approved shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repair in accordance with manufacturer's instructions. Electrical flaw detection testing at the
factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be not
less than 13,000 volts. Adhesives shall contain no free chloride ions.
2.1.6 Type SS-PS-350
Pipe or tube DN15 through DN250 1/2 through 10 inches: Schedule 40, seamless, corrosion-resistant steel sheathed
with thermoplastic (polyethylene), conforming to ASTM A 312/A 312M, Grade TP 316, and ASME B36.19M.
Fittings DN15 through DN40: 20 Megapascal 1/2 through 1-1/2 inches: 3,000-pound, forged corrosion-resistant
steel, socket weld, conforming to ASTM A 182/A 182M, Grade F316, and ASME B16.11.
Fittings DN50 through DN610 2 through 24 inches: Schedule 40, long radius, butt weld, corrosion-resistant steel,
conforming to ASTM A 403/A 403M, WP 316, and ASME B16.9.
Thermoplastic sheaths for pipe and fittings: Thermoplastic sheaths shall conform to FS L-C-530. Make sheath
joints with thermally fitted shrinking sleeves applied with factory-approved shrinking devices. Make taped fitting
protection and repairs in accordance with manufacturer's instructions. Electrical flaw detection testing at
the factory shall require 10,000 volts to be impressed across the sheath. Sheath breakdown voltage shall be
not less than 13,000 volts. Adhesives shall contain no free chloride ions.
2.2 ABOVEGROUND PIPING MATERIALS
NOTE: Select required systems materials and delete all others.
The following system pressures are based on ASME B31.3, zero corrosion factor,
welded joints and following materials allowable stress values: 138 Megapascal
20,000 psi for ASTM A 106/A 106M and ASTM A 312/A312M, Grade TP316 or TP347.
Reduce system pressure if largest specified pipe size is increased, if service
temperatures are increased (over 38 degrees C 100 degrees F or if alloy specifications
are changed.
Materials for piping systems with pressures to 69 Megapascal at 38 degrees C
10,000 psi at 100 degrees F may be specified in accordance with MSS SP-75 and
MSS SP-65. The same specifications may be used for 41.3 megapascal 6,000 psi
systems with pipe size larger than DN80 3 inches.
Following material specifications do not take into account materials with temperatures
less than minus 29 degrees C 20 degrees F.
2.2.1 Type BCS-6000
Pipe or tube DN15 through DN80 1/2 through 3 inches: XXS, seamless, black carbon steel, conforming to ASTM A 106/A 106M
, Grade B, and ASME B36.10M.
Fittings DN15 through DN4: 62 Megapascal 1/2 through 1-1/2 inches: 9,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M and ASME B16.11.
Fittings DN50 through DN80 2 through 3 inches: XXS, long radius, butt weld, black carbon steel, conforming to
ASTM A 234/A 234M, Grade WPB, and ASME B16.9.
Flanges: 17 and 41 Megapascal 2,500-pound, 6,000-pounds per square inch (psi) forged carbon steel, welding neck,
with raised face and concentric serrated finish, conforming to ASTM A 105/A 105M and ASME B16.5.
Gaskets: Spiral wound, non-asbestos filled material, carbon steel, with centering provisions, conforming to
ASME B16.5, Group 1.
Bolting: Alloy-steel bolt studs conforming to ASTM A 193/A 193M, Grade B7, and semifinished heavy hexnuts conforming
to ASTM A 194/A 194M, Grade 2H.
2.2.2 Type BCS-2000
Pipe or tube DN6 through DN80 1/8 through 3 inches: Schedule 40, seamless, black carbon steel, conforming to
ASTM A 106/A 106M, Grade B, and ASME B36.10M.
Fittings DN6 through DN40: 20 Megapascal 1/8 through 1-1/2 inches: 3,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M, and ASME B16.11.
Fittings DN50 through DN80 2 through 3 inches: Schedule 40, long radius, butt weld, black carbon steel conforming
to ASTM A 234/A 234M, Grade WPB, and ASME B16.9.
Flanges DN25 through DN80: 6200 kilopascal, 14890 kilopascal 1 through 3 inches: 900-pound, 2,160-psi forged
carbon steel, welding neck, with raised face and concentric serrated finish conforming to ASTM A 105/A 105M and
ASME B16.5.
Bolting: Alloy-steel bolt studs con-forming to ASTM A 193/A 193M, Grade B7 and semifinished heavy hex-nuts conforming
to ASTM A 194/A 194M, Grade 2H.
2.2.3 Type BCS-350
Pipe or tube DN6 through DN25 1/8 through 10 inches: Schedule 40, seamless, black carbon steel, conforming to
ASTM A 106/A 106M, Grade B, and ASME B36.10M
Fittings DN6 through DN40: 20 Megapascal 1/8 through 1-1/2 inches: 3,000-pound, forged carbon steel, socket
weld, conforming to ASTM A 105/A 105M, ASME B16.11.
Fittings DN50 through DN250 2 through 10 inches: Schedule 40, long radius, butt weld, black carbon steel, conforming
to ASTM A 234/A 234M, Grade WPB and ASME B16.9.
Flanges DN25 through DN250: 2070 kilopascal, 5000 kilopascal 1 through 10 inches: 300-pound, 720 psi, forged
carbon steel welding neck, with raised face and concentric serrated finish, conforming to ASTM A 181/A 181M,
Class 70 and ASME B16.5.
Gaskets: Spiral wound, non-asbestos filled materials, carbon steel, with centering provisions, conforming to
ASME B16.5, Group 1.
Bolting: Heavy hexhead carbon steel bolts or bolt studs conforming to ASTM F 568M ASTM A 307, and semifinished
heavy hex-nuts conforming to ASTM A 563M ASTM A 563, Grade A. Square-head bolts are not acceptable.
2.2.4 Type SS-6000
Pipe or tube DN15 through DN80 1/2 through 3 inches: XXS, seamless, corrosion-resistant steel, conforming to
ASTM A 312/A 312M, Grade TP 316 and ASME B36.10M.
Fittings DN15 through DN40: 62 Megapascal 1/2 through 1-1/2 inches: 9,000-pound, forged corrosion-resistant
steel, socket weld, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.11.
Fittings DN50 through DN80 2 through 3 inches: XXS, long radius, butt weld, corrosion-resistant steel, conforming
to ASTM A 403/A 403M, WP 316, ASME B16.9, and ASME B36.10M.
Flanges DN25 through DN80: 17 Megapascal, 41 Megapascal 1 through 3 inches: 2,500-pound, 6,000-psi DN25 through
DN80: 17 Megapascal, 41 Megapascal, forged corrosion-resistant steel, welding neck, with raised face and concentric
serrated finish, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.5.
Gaskets: Spiral wound, filled with chloride ion-free non-asbestos materials, corrosion-resistant steel, with
centering provisions, conforming to ASME B16.5, Group 1.
Bolting: Alloy-steel bolt studs conforming to ASTM A 193/A 193M, Grade B8 and semifinished heavy hex-nuts conforming
to ASTM A 194/A 194M, Grade 8F.
2.2.5 Type SS-2000
Pipe or tube: Schedule 40S seamless, corrosion-resistant steel, conforming to ASTM A 312/A 312M, Grade TP 316,
and ASME B36.19M.
Fittings DN15 through DN40: 20 Megapascal 1/2 through 1-1/2 inches: 3,000-pound, forged corrosion-resistant
steel, socket weld, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.11.
Fittings DN50 through DN80 2 through 3 inches: Schedule 40S, long radius, butt weld, corrosion-resistant steel
conforming to ASTM A 403/A 403M, WP 316 and ASME B16.9, and ASME B36.19M.
Flanges DN25 through DN80: 6200 kilopascal, 15 Megapascal 1 through 3 inches: 900-pound, 2,160-psi, forged
corrosion-resistant steel, welding neck, with raised face and concentric serrated finish, conforming to ASTM A 182/A 182M
, Grade F 316 and ASME B16.5.
Gaskets: Spiral wound, filled with chloride ion-free non-asbestos materials, corrosion-resistant steel, with
centering provisions, conforming to ASME B16.5, Group 1.
Bolting: Corrosion-resistant steel bolt studs conforming to ASTM A 193/A 193M, Grade B8 and semifinished heavy
hex-nuts conforming to ASTM A 194/A 194M, Grade 8A.
2.2.6 Type SS-350
Pipe or tube DN15 through DN250 1/2 through 10 inches: Schedule 40S, seamless, corrosion-resistant steel, conforming
to ASTM A 312/A 312M, Grade TP 316, and ASME B36.19M.
Fittings DN15 through DN25: 20 Megapascal 1/2 through 1 inch: 3,000-pound, forged corrosion-resistant steel,
socket weld, conforming to ASTM A 182/A 182M, Grade F 316, and ASME B16.11.
Fittings DN25 through DN250 1 through 10 inches: Schedule 40, long radius, butt weld, corrosion-resistant steel,
conforming to ASTM A 403/A 403M, WP 316 and ASME B16.9.
Flanges DN25 through DN250: 2070 kilopascal, 5000 kilopascal 1 through 10 inches: 300-pound, 720-psi, forged
corrosion-resistant steel, welding neck, with raised face and concentric serrated finish, conforming to ASTM A 182/A 182M
, Grade F 316, and ASME B16.5.
Gaskets: Spiral wound, filled with chloride ion-free non-asbestos materials, corrosion-resistant steel, with
centering provisions, conforming to ASME B16.5, Group 1.
Bolting: Heavy hex-head corrosion-resistant steel bolts or bolt studs conforming to ASTM A 193/A 193M, Grade
B8, and semifinished heavy hex nuts conforming to ASTM A 194/A 194M, Grade 8A. Square-head bolts are not acceptable.
2.3 AIR COMPRESSORS
Provide an air compressor of the standard piston type complete with air tank, [air dryer,] and other appurtenances.
Compressor and installation shall conform to ASME B19.3. Compressor shall be of sufficient capacity to provide
continuous control air when operating on a 1/3-on 2/3-off cycle and shall be provided with an oil-level sight
indicator on the compressor and a coalescing oil filter on the compressor discharge line. [Air dryers shall
be of the continuous duty [silica-gel type with reactivation] [mass refrigerated dryer type] and shall maintain
the air in the system with a dew point low enough to prevent condensation(minus 11 degrees C at 125 kilopascal
(13 degrees F at 18 psi main pressure). Locate air dryer at the outlet of the tank.] Control air delivered to
the system shall conform to ISA 7.0.01.
2.4 MANUAL VALVES
NOTE: Valves with "BCS" (Block Carbon Steel) prefix are for Type BCS piping
systems; valves with "SS" (Stainless Steel) prefix are for Type SS piping systems.
Number suffix applies to system pressure rating.
Write pressure-reducing valve specifications to suit project conditions.
Select required valves; delete all others; and supplement to suit project conditions.
2.4.1 General
NOTE: Select from the following paragraphs to suit project requirements.
Valve marking shall conform to MSS SP-25 and shall be supplemented by securely attached identification plates
which identify manufacturer, catalog number, pressure and temperature rating, size, flow direction, and serial
numbers. Also indicate body, stem, disc, seat, and hard surfacing materials.
Valve face-to-face and end-to-end dimensions shall conform to ASME B16.10.
Valve body, butt welding end configuration shall conform to the following requirements:
For piping systems rated at 13.7 Megapascal 2,000-psi and higher, PFI ES 21 shall apply.
For piping systems rated at 2500 kilopascal 350-psi water, oil, and gas (wog) and lower, ASME B16.25
shall apply.
Valve body socket welding end configurations shall conform to ASME B16.11
NOTE: Select if specification is rewritten for flanged valves.
Valve body flanged end configurations and pressure temperature ratings shall conform to ASME B16.5.
Pressure and temperature ratings for steel butt welding end valves shall conform to ASME B16.5 or ASME B16.34
.
Valves shall conform to applicable provisions of ASME BPVC SEC VIII D1.
Hydrostatic testing of steel valves shall conform to MSS SP-61.
Bolts and studs shall conform to ASTM A 193/A 193M, Grade B7; nuts shall conform to ASTM A 194/A 194M, Grade
2H.
Packing shall be wire reinforced, non-asbestos fiber materials jacketed, and impregnated with 30 percent tetrafluoroethylene
or a corrosion-inhibiting lubricant specifically suitable for service with the stem material provided.
NOTE: If body materials are changed or if larger carbon steel valves are used,
review need for stress relieving per ASME BPVC SEC VIII D1.
Hard surfacing alloy (HSA) shall conform to AWS A5.13, Class RNiCr-B or Class RCoCr-B, where specified.
NOTE: Select the following paragraph whenever cast-steel valves are specified.
Visually inspect cast-steel valves in accordance with MSS SP-55.
NOTE: Normally select one or delete both of the following paragraphs whenever
cast-steel valves are specified.
[Cast-steel valves shall be certified as inspected by the dry powder magnetic particle method in accordance with
MSS SP-53.]
[Cast-steel valves shall be certified as inspected by radiographic methods in accordance with MSS SP-54.]
2.4.2 Type BCS-6000A
Type BCS-6000A valves shall be Y-body globe type, rated 17 Megapascal 2,500 pounds, and 41 Megapascal 6,000 psi
with seal-welded or pressure-sealed bonnet, outside screw and yoke (OS&Y), hard-surfaced body-guided loose
disk, hard-surfaced integral or inserted and welded seat, hard-surfaced backseating, loose backseat, swing-eye
gland bolts, and malleable iron impact type valve wheels and handles.
Body and bonnet assembly shall be forged carbon steel conforming to ASTM A 105/A 105M.
Trim shall conform to ASTM A 182/A 182M, Grade F6.
Bronze stem bushing shall conform to ASTM B 148, No. C95300, heat treated, or approved equal.
NOTE: Select one of the following two paragraphs after checking flow coefficient.
[Valves shall have a full port.]
[Valves shall have full or reduced ports.]
Valve body shall have butt weld ends except that valves DN40 1-1/2-inch iron pipe size (ips) and smaller may
be socket weld end type.
2.4.3 Type BCS-6000B
Type BCS-6000B valves shall be Y-body type piston check, rated 17 Megapascal2,500 pounds and 41.37 Megapascal
6,000 psi with seal-welded or pressure-sealed bonnet, hard-surfaced spring-loaded body-guided disk, and hard-surfaced
integral or inserted and welded seat.
Body and bonnet assembly shall be forged carbon steel conforming to ASTM A 105/A 105M.
Trim shall conform to ASTM A 182/A 182M, Grade F 11.
Spring shall be corrosion-resistant steel.
Valve body shall have butt weld ends, except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.4.4 Type BCS-2000A
Type BCS-2000A valves shall be globe type, rated 4100 kilopascal and 14 Megapascal 600 pounds and 2,000 psi with
union, seal-welded or pressure-sealed bonnet, OS&Y, hard-surfaced loose disk, hard-surfaced seat, minimum
375 Brinell back seating, loose backseat where required for access, and malleable iron hand wheel or handle.
Body and bonnet assembly shall be forged carbon steel conforming to ASTM A 105/A 105M.
Trim shall conform to ASTM A 182/A 182M, Grade F6, or shall be manufacturer's standard equivalent materials for
the specified service.
Valve body shall have butt weld ends, except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.4.5 Type BCS-2000B
Type BCS-2000B valves shall be Y-body, piston check, rated 4100 kilopascal and 14 Megapascal 600 pounds and 2,000
psi with bolted, seal-welded or pressure-sealed bonnet, hard-surfaced spring-loaded body-guided disk, and hard-surfaced
integral or inserted and welded seat.
Body and bonnet assembly shall be forged carbon steel conforming to ASTM A 105/A 105M, Class 70, or cast carbon
steel conforming to ASTM A 216/A 216M, Grade WCB.
Trim shall be manufacturer's standard for the service.
Spring shall be corrosion-resistant steel.
Valve body shall have butt weld ends, except that forged steel valves may be socket weld end type up to DN50
2-inch ips.
2.4.6 Type BCS-2000C
Type BCS-2000C valves shall be gate type, rated 4100 kilopascal and 14 Megapascal 600 pounds and 2,000 psi with
union, bolted, seal-welded or pressure-sealed bonnet, OS&Y, hard-surfaced solid wedge disk, hard-surfaced
seats, minimum 375 Brinell back seating, and malleable iron handwheel.
Body and bonnet assembly shall be forged carbon steel conforming to ASTM A 105/A 105M.
Trim shall conform to ASTM A 182/A 182M, Grade F6, or shall be manufacturer's standard equivalent materials for
the specified service.
Valve body shall have butt weld ends except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.4.7 Type BCS-350A
Type BCS-350A valves shall be globe and angle type, rated 2070 kilopascal and 5100 kilopascal 300 pounds and
740 psi with bolted bonnet, OS&Y, hard-surfaced plug type loose disk, hard-surfaced seat, minimum 350 Brinell
back seating, swing-eye gland bolts, and malleable iron wheel.
Body and bonnet assembly shall be cast carbon steel conforming to ASTM A 216/A 216M, Grade WCB.
Stem material shall conform to ASTM A 182/A 182M, Grade F6.
NOTE: If valves smaller than 1-inch DN25 ips are required, use Type BCS-2000A.
Valve body in sizes DN50 2 inches and larger shall have butt weld ends.
2.4.8 Type BCS-350B
Type BCS-350B valves shall be horizontal swing check, rated 2070 kilopascal and 5100 kilopascal 300 pounds and
740 psi with bolted bonnet.
Body and bonnet assembly shall be cast carbon steel conforming to ASTM A 216/A 216M, Grade WCB.
Seating materials shall conform to ASTM A 182/A 182M, Grade F6.
NOTE: If valves smaller than DN25 1-inch ips are required, use Type BCS-2000B.
Valve body in sizes DN50 2 inches and larger shall have butt weld ends.
2.4.9 Type BCS-350C
Type BCS-350C valves shall be gate type, rated 2070 kilopascal and 5100 kilopascal 300 pounds and 740 psi with
bolted bonnet, OS&Y, hard-surfaced solid or one-piece flexible wedge disk, hard-surfaced seats, minimum 350
Brinell back seating, swing-eye gland bolts, and malleable iron wheel.
Body and bonnet assembly shall be cast carbon steel conforming to ASTM A 216/A 216M, Grade WCB.
Stem material shall conform to ASTM A 182/A 182M, Grade F6.
NOTE: If valves smaller than DN25 1-inch ips are required, use Type BCS-2000C.
Valve body in sizes DN50 2 inches and larger shall have butt weld ends.
2.4.10 Type SS-6000A
Type SS-6000A valves shall be Y-body globe type, rated 17 Megapascal and 41 Megapascal 2,500 pounds and 6,000
psi with seal-welded or pressure-sealed bonnet, OS&Y, hard-surfaced body guided disk, hard-surfaced integral
or inserted and welded seat, hard-surfaced back seating, loose back seat, swing-eye gland bolts, and malleable
iron impact-type valve wheels and handles.
Body and bonnet assembly shall be forged corrosion-resistant steel conforming to ASTM A 182/A 182M, Grade F 316.
Trim shall conform to ASTM A 182/A 182M, Grade F 316.
Bronze stem bushing shall conform to ASTM B 148, No. C95300, heat treated.
NOTE: Select one of the following two paragraphs after checking flow coefficient.
[Valves shall have a full port.]
[Valves shall have full or reduced ports.]
Valve body shall have butt weld ends, except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.4.11 Type SS-6000B
Type SS-6000B valves shall be Y-body, piston check, rated 17 Megapascal and 41 Megapascal 2,500 pounds and 6,000
psi with seal-welded or pressure-sealed bonnet, and hard-surfaced spring-loaded body-guided disk, hard-surfaced
integral or inserted and welded seat.
Body and bonnet assembly shall be forged corrosion-resistant steel conforming to ASTM A 182/A 182M, Grade F 316.
Trim shall conform to ASTM A 182/A 182M, Grade F 316.
Spring shall be corrosion-resistant steel.
Valve body shall have butt weld ends, except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.4.12 Type SS-2000A
Type SS-2000A valves shall be globe type, rated 41 Megapascal and 14 Megapascal 6,000 pounds and 2,000 psi with
union, seal-welded or pressure-sealed bonnet, OS&Y, hard-surfaced loose disk, hard-surfaced seat, minimum
375 Brinell back seating, loose back seat where required for access, and malleable iron hand wheel or handle.
Body and bonnet assembly shall be forged corrosion-resistant steel conforming to ASTM A 182/A 182M, Grade F 316.
Trim shall conform to ASTM A 182/A 182M, Grade F 316, or shall be manufacturer's standard equivalent materials
for the specified service.
Valve body shall have butt weld ends, except that valves DN40 1-1/2-inch ips and smaller may be socket weld end
type.
2.5 PIPING SPECIALTIES
2.5.1 Pressure Gages
Pressure gages shall conform to ASME B40.100 and to requirements specified in kilopascal psi units herein. Pressure
gage size shall be 115 millimeter 4-1/2 inches nominal diameter for systems pressures less than 2500 kilopascal
and 200 millimeter 350 psi and 8 inches nominal diameter for all higher pressures. Cases shall be of cast aluminum.
Equip all gages with adjustable red marking pointer and damper screw adjustment in inlet connection. Bourdon
tubes shall have a bleeding device to facilitate cleaning and bleeding trapped gas.
Gage cases shall be one-piece solid-front type with a safety-release back cover. Windows shall be shatterproof
glass. Dials shall be white with dual seals. Outer scale shall have red markings graduated in SI units; the
inner scale shall have black markings graduated in psi units.
NOTE: Select following for high pressure gages in control rooms and for applications
in accordance with NASA LRC safety policy.
2.5.2 Pressure Receiver Gages and Pneumatic Transmitters
2.5.2.1 Receiver Gages
Gages shall be indicating type with 150 millimeter 6-inch white background dial face and black lettering indicating
transmitted air pressure and be suitable for transmitted air pressure range from 20 to 105 kilopascal 3 to 15
psi. Pointer shall be adjustable micrometer type. Provide overload and underload stops. Bourdon tube and movement
shall be AISI Type 316 and 300 series stainless steel, respectively. Connection shall be DN6 1/4-inch ips or
tube size, depending on system makeup. Case shall be black finish cast aluminum for indicated mounting. Accuracy
shall be within 0.5 percent of scale range.
NOTE: Select following paragraph or delete and tabulate each instrument.
[Gage scale range shall be as indicated.]
2.5.2.2 Pneumatic Transmitters
Transmitter shall be nonsuppressed, nonindicating type complete with sensitive relay, dual Bourdon tube-actuated
motion balance system, zero and span adjustment, and accessories. Case shall be weatherproof, kept free of foreign
particulate matter by purging air, and shall be constructed of manufacturer's standard finish steel base with
safety blowout disk and aluminum cover.
NOTE: Select first of following two paragraphs for inlet pressures to 1,000
psi 70 Megapascal; select second of following two paragraphs for inlet pressures
in excess of 1,000 psi 70 Megapascal.
Bourdon tubes shall be phosphor bronze; tips and connections shall be brass. Unit inlets shall be screened.
Bourdon tubes, tips, and connections shall be AISI Type 316 corrosion-resistant steel. Unit inlets shall be
screened.
Unit shall be self-compensating under varying ambient temperature conditions. Minimum speed of response shall
be the capability to raise pressure from 20 to 105 kilopascal 3 to 15 psi through 15.25 meter of 5 millimeter
500 feet of 3/16-inch id tubing with a time constant of 4 seconds. Accuracy shall be within 0.5 percent of
scale range. Sensitivity shall be within 0.1 percent of pressure range.
NOTE: Select following paragraph or delete and rewrite to agree with receiver
gage tabulation or to suit other project conditions.
Unit range shall be as indicated. Output range shall be 20 to 105 millimeter 3 to 15 psi. Provide one pneumatic
transmitter for each pressure-receiver gage, unless otherwise specified.
[Pneumatic-transmitter assembly mounting shall be pipe type.]
NOTE: Select following paragraph only after checking specific regulator requirements.
Rewrite if necessary to suit project conditions.
Provide manufacturer's standard pressure rated filter-regulator assembly and50 millimeter 2-inch dial face supply
air and transmitted air pressure gages.
2.5.3 Thermometers
Thermometers shall conform to ASTM E 1 and to requirements specified herein. Thermometers shall be industrial
pattern Type 1, Class 3. All thermometers installed 1800 millimeter 6 feet or higher above the floor shall have
an adjustable angle body. Scale shall be not less than 180 millimeter 7 inches long, and case face shall be
manufactured from manufacturer's standard polished aluminum or AISI 300 series polished corrosion-resistant steel.
Thermometer range shall be as indicated. All thermometers shall be provided with AISI Type 316 corrosion-resistant
steel separable wells.
2.6 MISCELLANEOUS MATERIALS
2.6.1 Bolting
General purpose bolting shall be hex-head and shall conform to ASTM F 568M ASTM A 307. Heavy hex-nuts shall
conform to ASME B18.2.4.6M ASME B18.2.2. Square-head bolts and nuts are not acceptable.
2.6.2 Elastomer Calk
Polysulfide or polyurethane base elastomer calking material shall be a two-component type conforming to ASTM C 920
.
2.6.3 Escutcheons
Escutcheons shall be manufactured from nonferrous metals and shall be chrome plated except when AISI 300 series
corrosion-resistant steel is provided. Metals and finish shall conform to FS WW-P-541.
Escutcheons shall be one-piece or split-pattern type. All escutcheons shall have provisions consisting of internal
spring-tension devices or setscrews to maintain a fixed position against a surface.
2.6.4 Flashing
Lead: Sheet lead shall conform to ASTM B 749, Grade B, C, or D and shall weigh not less than 20 kilogram per
square meter 4 pounds per square foot.
Copper: Sheet copper shall conform to ASTM B 370 and shall weigh not less than 4.8 kilogram per square meter
16 ounces per square foot.
2.7 SUPPORTING ELEMENTS
NOTE: Drawings shall completely detail anchors, restraining guides, sway braces,
and shock absorbing provisions to accommodate reaction forces encountered, as
well as other piping support elements not covered by the following specifications.
Refer to Section 23 05 48 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND
EQUIPMENT if design may induce vibration considerations.
Select and supplement or rewrite the following paragraphs as required by project
conditions.
2.7.1 General
Provide all necessary piping system components and miscellaneous supporting elements required, including but
not limited to, building structure attachments; supplementary steel; hanger rods, stanchions, and fixtures; vertical
pipe attachments; horizontal pipe attachments; anchors; guides; shock absorbers; and variable and constant supports.
All supporting elements shall be suitable for stresses imposed by system pressures and temperatures, and natural
and other external forces.
Supporting elements shall be UL approved or listed, shall conform to requirements of ASME B31.3, MSS SP-58, and
MSS SP-69, or the BOCA National Plumbing Code, except as supplemented and modified by these specifications.
Code mark and submit individual supporting element details as part of the shop drawings for all piping systems.
Details shall include an exact bill of materials for components making up each assembly and shall include a dimensioned
location plan for each assembly with respect to building structure or equipment.
Individually bundle and tag each coded assembly with code mark prior to delivery to the site.
[Provide constant supports, with travel stops where necessary, at vertically drifting piping to preclude excessive
stresses at terminal points.]
NOTE: Drawings shall show reactive forces (in pounds) newton) generated by
system operation which normally cannot be anticipated by device manufacturer.
Provide shock absorbers and sway suppressors to absorb system reactive forces where indicated.
Make attachments welded to pipe of material identical to that of pipe or of materials accepted as permissible
raw materials by referenced code or standard specification. Heat treatment for attachment stress relieving shall
be in a furnace allowing for controlled conditions and uniformity of temperature. Type devices specified herein
are defined in referenced MSS Standard, unless otherwise noted.
2.7.2 Building Structure Attachments
Anchor devices, concrete, and masonry: Anchor devices shall conform to requirements of FS FF-S-325, Group I;
Group II, Type 2, Class 2, Style 1 or Style 2; Group III; or Group VIII.
Cast-in-floor mounted-equipment anchor devices shall provide adjustable positions.
Masonry anchor devices shall be built in, unless otherwise approved by the Contracting Officer.
Do not use powder-actuated anchoring devices to support any mechanical system components.
Beam Clamps: Beam clamps shall be center-loading Type 21, 28, 29, or 30, UL-listed, catalogued and load-rated,
commercially manufactured products.
Do not use C-clamps.
Inserts, Concrete: Construct concrete inserts in accordance with the requirements of MSS SP-58 for Type 18 and
MSS SP-69. When applied to piping in sizes DN50 2-inch ips and larger and where otherwise required by imposed
loads, insert and wire a 300 millimeter 1-foot length of 15 millimeter 1/2-inch reinforcing rod through wing
slots. Proprietary-type continuous inserts may be similarly used when approved by the Contracting Officer.
2.7.3 Horizontal Pipe Attachments
Single pipes
Wherever possible, piping shall be supported by Type 2, Type 3, or Type 4 attachments.
Provide spring supports in accordance with referenced standards.
Pipe rolls shall be Type 41 or 49.
Where clamps and rolls are not used, pipe supports shall be Type 1.
2.7.4 Vertical Pipe Attachments
Vertical pipe attachments shall be Type 8.
Provide spring supports in accordance with referenced codes and standards.
2.7.5 Hanger Rods and Fixtures
Use only circular cross section rod hangers to connect building structure attachments to pipe support devices.
Use pipe straps or bars of equivalent strength for hangers only where approved by the Contracting Officer.
Provide turnbuckles, swing eyes, and clevises as required by support system to accommodate pipe accessibility
and for adjustment to load and pitch.
2.7.6 Supplementary Steel
Where it is necessary to frame structural members between existing members or where structural members are used
in lieu of commercially rated supports, design and fabricate such supplementary steel in accordance with AISC 325
.
PART 3 EXECUTION
3.1 UNDERGROUND PIPING SYSTEMS INSTALLATION
Perform installation of compressed air systems in accordance with the applicable requirements specified under
"Aboveground Piping Systems Installation" in this section, the requirements specified herein, and in the presence
of the Contracting Officer who shall be notified by the Contractor 48 hours in advance of start of the work.
All excavations shall be dry and clear of extraneous materials when pipe is being laid.
Blocking and wedging will not be permitted.
NOTE: Drawings shall indicate underground piping requiring support from slabs.
All underground piping below supported or suspended slabs shall be supported from the slab with a minimum of
two supports per length of pipe. Protect supports with a coating of bitumen.
NOTE: Coordinate following two paragraphs with drawings.
Pipes passing through walls below grade and ground floor slab shall pass through pipe sleeves as indicated.
Where pipe penetrates earth or concrete grade, not less than 300 millimeter 12 inches of polyethylene-coated
Type BCS-PS pipe shall be exposed-to-view. Additional piping protection shall be provided concrete penetration
points as indicated.
Install Type BCS-PS materials in accordance with the applicable requirements specified herein for underground
piping and aboveground piping. Pipe shall be palletized in padded pallets at the factory and handled from pallet
to final position with padded gear. Protect surfaces from the sun with black polyethylene sheeting. Prior to
being lowered into a trench, sheeting shall be checked for continuity with 10,000 volts applied by a continuity
detector with an audible alarm. In the trench, after joints and fittings are made, previously untested surfaces
shall be checked for continuity. Where discontinuities in thermoplastic sheeting are found, remove and replace
not less than 300 millimeter 12 inches of material upstream and downstream of the fault.
Distinctly mark and promptly remove defective materials found from the site.
3.2 ABOVEGROUND PIPING SYSTEMS INSTALLATION
3.2.1 General
NOTE: Check for pertinent item inclusion, NASA Langley Research Center standard
procedures for radiographic testing, and other requirements for systems operating
at pressures in excess of 125-psi 860 kilopascal wsp.
Fabricate and install piping systems in accordance with the requirements of the following codes and standards
except as supplemented and modified by these specifications:
ASME B31.3
MSS SP-69
ASME BPVC SEC II-C, for applicable materials and procedures not specified herein
AWS WHB-2.9, for applicable materials and procedures not specified herein
Provisions of referenced codes and standards shall constitute minimum requirements for system materials, installation,
and workmanship. Strict compliance therewith shall be required for all systems work except where the drawings
and specification require better materials and methods of installation than the minimum requirements set forth
in the code or standard. In all cases, the drawings and specifications shall supersede code and standards requirements.
Installation of piping systems materials shall conform to the published or written instructions of the manufacturer
for the project application except as otherwise specified herein.
Where the Contractor proposes to deviate from specified instructions, submit the proposed deviation to the Contracting
Officer for approval.
Work shall be done in the presence of the Contracting Officer who shall be notified 48 hours in advance of start
of the work.
Permanent identification of piping shall conform to PFI ES 11. Identification shall be located at points designated
by the Contracting Officer and shall be legibly and conspicuously marked by yellow fluorescent aerosol paint.
Coordinate exact location of piping among trades so that there will be no interference with lighting fixtures,
piping, ducts, or other construction.
Fabricate pipe to measurements established on the job and carefully work into place without springing or forcing.
Make adequate provision for absorbing all expansion and contraction without undue stress in any part of the system.
NOTE: If the following paragraph does not provide for cleanliness required
by project conditions, and if pickling of pipe and temporary line strainers
are required, refer to Ingersoll-Rand Form 3219B for suitable specification
and strainer-design criteria and rewrite the following paragraph. Do not oil
pipe bore; use phosphoric acid rust-preventive treatment.
Pipe, tubing, fittings, valves, equipment, and accessories shall be clean and free of all foreign material before
being installed in their respective systems. Clean pipe by hammering, shaking, or swabbing, or by a combination
of those methods. Purge lines with dry, oil-free compressed air after erection, but purging shall not be relied
upon for removing all foreign matter. Purge lines at a velocity in excess of maximum normal-flow velocity and
as approved by the Contracting Officer. During the progress of construction, properly protect open ends of pipe,
fittings, and valves at all times to prevent the admission of foreign matter. Place plugs and caps in the ends
of installed work at all times, except when connections are being made. Plugs and caps shall be commercially
manufactured products, unless otherwise approved by the Contracting Officer.
NOTE: Prior to selection of the following paragraph, review design routing,
reaction forces, and support provisions.
Install piping straight and true with approved offsets around obstructions, expansion bends or fitting offsets
essential to a satisfactory installation, and as may be necessary to increase headroom or to avoid interference
with the building construction, electric conduit, or facilities equipment.
Use standard long-sweep pipe fittings for changes in direction. No mitered joints or unapproved pipe bends will
be permitted.
Pipe bends shall be shop-made by the sand-filled hot-bending process provided (1) bend radius is not less than
6 times the nominal pipe diameter; (2) fabrication tolerances are in accordance with PFI ES 3 for the applicable
wall thickness; (3) preheat and postheat treatment procedures, where applicable, are in accordance with referenced
standards; (4) piping is cleaned, after bending operations, with a turbine cutter assembly followed by shot or
sand blasting; (5) all operations are performed to preclude detrimental wall thickness reduction; and (6) the
fabricating shop is a member of the Pipe Fabricating Institute and is approved by the Contracting Officer.
NOTE: Prior to selection of following paragraph, review requirements of project
application.
Make branch connections with either welding tees or forged branch outlet fittings, within limitations of referenced
codes and standards. Branch outlet fittings, where used, shall be forged, flared for improved flow where attached
to the run, reinforced against external strains, and designed to withstand full pipe-bursting strength requirements.
Horizontal piping shall have a grade of 25 millimeter per 30.5 meter 1 inch per 100 feet.
Use eccentric reducers where required to permit proper drainage of pipe lines. Bushings are not permitted for
this purpose. Provide drain valves where indicated.
Install piping in a manner that will prevent stresses and strains from being imposed upon connected equipment.
Expansion bend configuration shall be as indicated. Expansion U-bend shall be cold sprung and welded into the
line which shall be anchored before removing the spreader from the expansion U-bend. Amount of cold spring shall
be as indicated.
3.2.2 Joints
NOTE: Review following requirements for inadequacy, conflict, and redundancy.
Field-welded joints shall conform to the requirements of the AWS WHB-2.9 and ASME B31.3.
[Piping systems rated 14 Megapascal 2,000 psi and higher shall have butt weld joints made with consumable insert
rings, utilizing inert-gas tungsten-arc root pass welding together with inert gas purging of id of pipe. Consumable
insert ring materials shall be compatible with all materials being joined. Joint configuration shall conform
to PFI ES 21. Provide root pass joint preheat treatment at temperatures necessary to avoid cracking.]
[Piping systems rated 2400 kilopascal 350 psi and lower shall have butt weld joints made with backing rings.
Backing ring materials shall be compatible with materials being joined. Joint configuration shall conform to
ASME B16.25.]
NOTE: Prior to selection of one of the following two paragraphs, review requirements
of ASME B31.3, and ASME BPVC SEC IX to avoid conflict and redundancy.
Perform preheat and postheat treatment of welds in accordance with ASME BPVC SEC IX.
Perform preheat and postheat treatment of welds in accordance with ASME B31.3.
Assemble flanged joints with appropriate flanges, gaskets, and bolting. Clearance between flange faces shall
be sufficient to ensure that the connections can be gasketed and bolted tight without imposing undue strain on
the piping system. Flange faces shall be parallel and the bores concentric; center gaskets on the flange faces
without projecting into the bore. Lubricate bolting with oil and graphite before assembly to ensure uniform
bolt stressing. Draw up and tighten flange bolts in staggered sequence in order to prevent unequal gasket compression
and deformation of the flanges. After the piping system has been tested, retighten bolting to provide required
gasket stress.
3.2.3 Supporting Elements Installation
Provide supporting elements in accordance with the requirements of referenced codes and standards, except as
supplemented or modified herein.
Hang piping from building construction. Hang no piping from roof deck or from other pipe.
Attachment to building construction concrete shall be by approved cast-in concrete inserts or by built-in anchors.
Where attachment by either of above methods is not practical, specified masonry anchor devices may be used upon
receipt of written approval from the Contracting Officer.
Embed fish plates in the concrete to transmit hanger loads to the reinforcing steel where hanger rods exceed
22 millimeter 7/8 inch in diameter.
Construct masonry anchors selected for overhead applications of ferrous materials only.
Masonry anchors conforming to FS FF-S-325, Group I; Group II, Type 2, Class 2, Style 1 or Style 2; or Group VIII
shall be installed in rotary, nonpercussion electrically drilled holes. Self-drilling anchors (Group III) may
be used provided masonry drilling is done with electric hammers selected and applied in a manner that will preclude
concrete spalling or cracking (visible or invisible). Pneumatic tools will not be allowed.
Percussive action, electric hammers, and combination rotary-electric hammers used for the installation of self-drilling
anchors shall be selected in accordance with the following guide:
Anchor-devices, nominal sizes M6 through M14 (1/4 through 1/2 inch) 1/4 through 1/2 inch, may be hammer
type only or combination rotary-hammer type and shall be rated at load to draw not more than 5.0 to 5.5
amperes when operating on 120-volt, 60-hertz power.
Anchor devices, nominal sizes M6 5/8 inch and larger, hammer-type only, shall be rated at load to draw
not more than 8.0 amperes when operating on 120-volt, 60-hertz power. Combination rotary-hammer tools
on the same power supply shall have a full load current rating not to exceed 10 amperes.
NOTE: Typical sources of electric hammer (h) and combination rotary-hammer
(r-h) and blows per minute (bpm):
Name and Model Type bpm amps 120/60 bpm/amp
B & D 103-1 h 2,300 3.3 695
B & D 104-1 h 2,200 7.0 314
B & D 718 r-h 3,350 7.5 448
B & D 719 r-h 3,600 10.0 360
I-R HS650U h 3,000 8.0 375
Mil 5350 r-h 2,500 5.0 500
B & D 104-1 h 2,200 7.0 314
B & D 718 r-h 3,360 7.5 448
B & D 719 r-h 3,600 10.0 360
I-R HS650U h 3,000 8.0 375
Mil 5350 r-h 2,500 5.0 500
Mil 5300 r-h 3,250 10.0 325
Phil K457 h 3,000 6.5 461
Rock-
well Kango h 2,500 7.0 357
Skil 726 r-h 2,400 5.5 436
Skil 728 r-h 2,900 6.5 446
Skil 729 h 3,000 6.5 462
Size inserts and anchors for the total stress to be applied with a safety factor as required by applicable codes,
but in no case less than 4. Submit complete shop drawings.
Insert anchor devices into concrete sections not less than twice the overall length of the device and locate
the anchor devices not less than the following distance from any side or end edge or centerline of adjacent anchor
service:
Anchor Bolt Size M6 M8 M10 M15 M16 M20 M22 (Millimeter)
Minimum Edge 85 90 105 130 150 180 205 Space (Millimeter)*
Anchor Bolt Size 1/4 5/16 3/8 1/2 5/8 3/4 7/8 (Inches)
Minimum Edge 3-1/4 3-1/2 4 5 6 7 8 Space (Inches)*
* Except where manufacturer requires greater distance.
In special circumstances, with prior written approval of the Contracting Officer, center-to-center distance may
be reduced to 50 percent of given distance provided load on the device is reduced in direct proportion to the
reduced distance.
Piping shall run parallel with the lines of the building. Space and install piping and components so that there
shall be not less than 15 millimeter 1/2 inch of clear space between the finished surface and other work and
between the finished surfaces of parallel adjacent piping.
Parallel pipe runs shall allow for tool space around mechanical connections. Where it is necessary to avoid
any transfer of load from support to support or onto connecting equipment, pipe hangers shall be constant-support
type.
Weld anchors and pipe-alignment guides to the piping in accordance with requirements specified herein and attached
to the building structure in a manner indicated or approved by the Contracting Officer.
Suitably brace piping against reaction, sway, and vibration. Bracing shall consist of hydraulic and spring devices,
brackets, anchor chairs, rods, and structural steel.
Locate pipe lines, when supported from roof purlins, not greater than one-sixth of the purlin span from the roof
truss. Load per hanger shall not exceed 1800 newton 400 pounds when support is from a single purlin or 3600
newton 800 pounds when hanger load is applied to purlins halfway between purlins by means of auxiliary support
steel supplied by the piping Contractor. When support is not halfway between purlins, the allowable hanger load
shall be the product of 400 times the inverse ratio of the longest distance to purlin-to-purlin spacing.
When the hanger load exceeds the above limits, furnish and install reinforcing of the roof purlin(s) or additional
support beam(s). When an additional beam is used, the beam shall bear on the top chord of the roof trusses, and
bearing shall be over gusset plates of top chord. Stabilize beam by connection to roof purlin along bottom flange.
Install hangers and supports for piping at intervals specified herein at locations not more than 900 millimeter
3 feet from the ends of each runout and not over 25 percent of specified interval from each change in direction
of piping.
NOTE: Check following intervals for project materials application permissible
for combined bending and shearing stresses.
Base load rating for all pipe hanger supports on weight and forces imposed on all lines. Deflection per span
shall not exceed slope gradient of pipe. Schedule 40 and heavier pipe supports shall be in accordance with the
following minimum rod size and maximum allowable hanger spacing; concentrated loads will reduce allowable span
proportionately:
PIPE SIZE ROD SIZE HANGER SPACING
MILLIMETER (DN) MILLIMETER MILLIMETER
15 and smaller 10 1500
20 to 25 10 1800
32 to 40 10 2700
50 15 3000
65 to 80 15 3600
100 to 125 16 4500
150 20 4800
200 to 300 22 6100
PIPE SIZE ROD SIZE HANGER SPACING
INCHES INCHES FEET
1/2 and smaller 3/8 5
3/4 to 1 3/8 6
1-1/4 to 1-1/2 3/8 9
2 1/2 10
2-1/2 to 3 1/2 12
4 to 5 5/8 15
6 3/4 16
8 to 12 7/8 20
Support vertical risers independently of connected horizontal piping wherever practical and guide for lateral
stability. Provide only one rigid support for risers subject to expansion.
After the piping systems have been installed, tested, and placed in satisfactory operation, the Contractor shall
tighten hanger rod nuts and jam nuts to prevent any loosening.
3.2.4 Sound Stopping
Provide effective sound stopping and adequate operating clearance to prevent structure contact where pipes penetrate
walls, floors, or ceilings. Where penetrations occur from pipe chases into occupied spaces, provide special
acoustic treatment of ceiling. Occupied spaces include space above ceilings where no special acoustic treatment
of ceiling is provided. Penetrations shall be finished to be compatible with surface being penetrated.
Specify sound stopping under "Sleeves" in this section.
Leadwool and viscoelastic damping compounds may be proposed for use where other sound-stopping methods are not
practical, provided temperature and fire-resistance characteristics of the compound are suitable for the service.
3.2.5 Sleeves
Supply and install sleeves where piping passes through roofs, through masonry or concrete walls, and through
floors.
Sleeve work shall be laid out before placement of slabs or construction of walls and roof, and all sleeves necessary
to complete the work shall be set.
Where pipe sleeves are required after slabs and masonry are installed, make holes to accommodate these sleeves
with core drills. Set sleeves in place with a two-component epoxy adhesive system approved by the Contracting
Officer. No load shall be carried by such sleeves unless approved by the Contracting Officer.
Sleeves shall be flush with ceilings and where indicated.
Sleeves shall be flush with the floor in finished spaces and extend 50 millimeter 2 inches above the floor in
unfinished spaces.
Sleeves passing through steel decks shall be continuously welded or brazed to the deck.
Sleeves extending through floors, roofs, load bearing walls, and fire barriers shall be continuous and fabricated
from Schedule 40 steel pipe with welded anchor lugs. Form other sleeves by molded linear polyethylene liners
or similar materials which are removable. Diameter of sleeves shall be large enough to accommodate pipe and
isolation and sealing materials with a minimum of 10 millimeter 3/8-inch clearance. Sleeves shall accommodate
mechanical and thermal motion of pipe to preclude transmission of vibration to walls and the generation of noise.
Space between a pipe and the inside of a pipe sleeve or a construction surface penetration shall be packed solid
with a mineral fiber conforming to FS HH-I-558, Form B, Class 8 wherever the piping passes through firewalls,
equipment room walls, floors, and ceilings connected to occupied spaces, and other locations where sleeves or
construction surface penetrations occur between occupied spaces. Where sleeves or construction surface penetrations
occur between conditioned and unconditioned spaces, the space between a pipe, bare or insulated, and the inside
of a pipe sleeve or construction surface penetration shall be filled with an elastomer calk to a depth of 15
millimeter 1/2 inch. All surfaces to be calked shall be oil- and grease-free.
Exterior wall sleeves shall be calked watertight with lead and oakum or mechanically expandable chloroprene inserts
with mastic sealed metal components.
3.2.6 Escutcheons
Provide escutcheons at all penetrations of piping into finished areas. Where finished areas are separated by
partitions through which piping passes, provide escutcheons on both sides of the partition. Where suspended
ceilings are installed, provide plates at the underside only of such ceilings. Escutcheons shall be chrome-plated
in all occupied spaces and of sufficient size to conceal openings in building construction. Firmly attach all
escutcheons, preferably with setscrews.
3.2.7 Flashings
NOTE: Coordinate with drawings and check roof flooding provisions, if any.
Provide all require flashings at mechanical systems penetrations of building boundaries as indicated.
3.3 COMPRESSED AIR SYSTEMS TESTING
NOTE: Delete paragraph title and following paragraphs when compressed air systems
are not applicable to the project.
Determine whether or not systems supports are adequate for loads normal to specified
hydrostatic testing.
3.3.1 General
Prior to acceptance of the work, pressure test completed systems in the presence of the Contracting Officer.
NOTE: Because of the expansive force of compressed air at the 100-psi 690 kilopascal
and higher range of pressures normally used, pneumatic testing requires special
precautions and competent supervision to prevent injury and damage should a
failure occur.
[Tests shall be pneumatic and shall use dry, oil-free compressed air, carbon dioxide, or nitrogen as specified
for the system under test. Pressure Testing shall be done in two stages; i.e. preliminary and acceptance.]
[Tests shall be hydrostatic. Only use potable water for testing. Government will supply testing water at a
location determined by the Contracting Officer, but the Contractor shall be responsible for the approved disposal
of contaminated water. Temperature of water used for testing shall not cause condensation on system surfaces.
Provide supplementary heat if necessary.]
Do not perform pressure tests in excess of 34 kilopascal 5 psi until personnel not directly involved in the tests
are evacuated from the area.
Contractor may conduct tests for his own purposes, but Preliminary Tests and Acceptance Tests shall be conducted
as specified herein.
NOTE: Select the following paragraph only when pneumatic testing is specified.
System Testing shall include Preliminary Tests by applying internal pressures exceeding 34 kilopascal 5 psi swabbing
all joints under test with a high film strength soap solution, and observing for bubbles.
If testing reveals that leakage exceeds specified limits, the leaks shall be isolated and repaired, defective
materials shall be replaced where necessary, and the system shall be retested until specified requirements are
met. Remake leaking gasket joints with new gaskets and new flange bolting. Do not use removed bolting and gaskets
again.
NOTE: Select the following paragraph only when hydrostatic testing is specified.
Regardless of the amount of measured leakage, immediately repair visible leaks or defects in the pipeline.
Only use standard piping flanges, plugs, caps, and valves for sealing off piping for test purposes.
NOTE: Select following paragraph only when hydrostatic testing is specified.
Compressed air trapped during high pressure hydrostatic testing shall be vented to preclude injury and damage.
If purging or vent valves are not provided, the Contracting Officer may require the removal of any system component
such as plugs and caps to verify that water has reached all parts of the system.
Remove components from piping systems prior to testing whenever the component would otherwise sustain damage
due to test pressure.
Check piping system components such as valves for proper operation under system test pressure.
Add no test media to a system during a test for a period as specified or to be determined by the Contracting
Officer.
Duration of a test will be determined by the Contracting Officer. Test may be terminated by direction of Contracting
Officer at any point during a 24-hour period after it has been determined that the permissible leakage rate has
not been exceeded.
NOTE: Select following paragraph only when hydrostatic testing is specified.
Drain and purge dry piping system, upon completion of testing, with dry air. Verify system dryness by hygrometer
comparison with purging air.
Prepare, maintain, and submit test records of piping systems tests for approval. Records shall show Government
and Contractor test personnel responsibilities, dates, test gage identification numbers, ambient temperatures,
pressure ranges, rates of pressure drop, and leakage rates. Each acceptance test will be signed by the Contracting
Officer. Deliver two record copies to the Contracting Officer after acceptance.
3.3.2 Test Gages
Contractor's test gages shall conform to ASME B40.100 and have a dial size 200 millimeter 8 inches or larger.
Maximum permissible scale range for a given test shall be such that the pointer shall have a starting position
at midpoint of the dial or within the middle third of the scale range. Certification of accuracy and correction
table shall bear a date within 90 calendar days prior to the test date and shall show test gage number and the
project number, unless otherwise approved by the Contracting Officer.
3.3.3 Acceptance Pressure Testing
Testing shall be done during steady ambient temperature conditions.
NOTE: Specify hereunder system test pressures and allowable leakage rates to
suit project conditions.
3.3.4 Support Elements Testing
Systems containing hydraulic or spring shock absorbers shall be tested for ability to accommodate system forces
by manipulation of system components as directed by the Contracting Officer.