UFGS 23 05 15 Common Piping for HVAC.pdf

USACE / NAVFAC / AFCEC UFGS-23 05 15 (May 2022)

Change 2 - 08/24

Preparing Activity: NAVFAC Superseding UFGS-23 05 15 (February 2014)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated July 2025

SECTION TABLE OF CONTENTS

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

SECTION 23 05 15

COMMON PIPING FOR HVAC

05/22, CHG 2: 08/24

PART 1 GENERAL

1.1 REFERENCES

1.2 GENERAL REQUIREMENTS

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Material and Equipment Qualifications

1.4.2 Alternative Qualifications

1.4.3 Service Support

1.4.4 Manufacturer's Nameplate

1.4.5 Modification of References

1.4.5.1 Definitions

1.4.5.2 Administrative Interpretations

1.5 DELIVERY, STORAGE, AND HANDLING

1.6 ELECTRICAL REQUIREMENTS

1.7 ELECTRICAL INSTALLATION REQUIREMENTS

1.7.1 New Work

1.7.2 Modifications to Existing Systems

1.7.3 High Efficiency Motors

1.7.3.1 High Efficiency Single-Phase Motors

1.7.3.2 High Efficiency Polyphase Motors

1.7.4 Three-Phase Motor Protection

1.8 INSTRUCTION TO GOVERNMENT PERSONNEL

1.9 ACCESSIBILITY

PART 2 PRODUCTS

2.1 ELECTRICAL HEAT TRACING

2.2 PIPE AND FITTINGS

2.2.1 Type BCS, Black Carbon Steel

2.2.2 Type BCS-125, 862 kilopascal Service 125-psi Service

2.2.3 Type GCS, Galvanized Carbon Steel

2.2.4 Type GCS-DWV, Galvanized Steel Drain, Waste and Vent

2.2.5 Type CISP-DWV, Cast-Iron Drain, Waste and Vent

SECTION 23 05 15 Page 1

2.2.6 Type CPR, Copper

2.2.6.1 Type CPR-A, Copper Above Ground

2.2.6.2 Type CPR-U, Copper Under Ground

2.2.6.3 Type CPR-INS, Copper Under Ground Insulated

2.2.7 Polypropylene Pipe

2.2.8 Grooved Pipe Couplings and Fittings

2.3 PIPING SPECIALTIES

2.3.1 Air Separator

2.3.2 Air Vents

2.3.3 Compression Tank

2.3.4 Dielectric Connections

2.3.5 Expansion Vibration Isolation Joints

2.3.6 Flexible Pipe

2.3.7 Flexible Metallic Pipe

2.3.8 Flexible Metal Steam Hose

2.3.9 Metallic Expansion Joints

2.3.10 Hose Faucets

2.3.11 Pressure Gages

2.3.12 Sight-Flow Indicators

2.3.13 Sleeve Couplings

2.3.14 Thermometers

2.3.15 Pump Suction Strainers

2.3.16 Line Strainers, Water Service

2.3.17 Line Strainers, Steam Service

2.4 VALVES

2.4.1 Ball and Butterfly Valves

2.4.2 Drain, Vent, and Gage Cocks

2.4.3 Gate Valves (GAV)

2.4.4 Globe and Angle Valves (GLV-ANV)

2.4.5 Standard Check Valves (SCV)

2.4.6 Nonslam Check Valves (NSV)

2.5 MISCELLANEOUS MATERIALS

2.5.1 Bituminous Coating

2.5.2 Bolting

2.5.3 Elastomer Caulk

2.5.4 Escutcheons

2.5.5 Flashing

2.5.6 Flange Gaskets

2.5.7 Grout

2.5.8 Pipe Thread Compounds

2.6 SUPPORTING ELEMENTS

2.6.1 Building Structure Attachments

2.6.1.1 Anchor Devices, Concrete and Masonry

2.6.1.2 Beam Clamps

2.6.1.3 Type 19 and 23 C-Clamps

2.6.1.4 Inserts, Concrete

2.6.2 Horizontal Pipe Attachments

2.6.2.1 Single Pipes

2.6.2.2 Parallel Pipes

2.6.3 Vertical Pipe Attachments

2.6.4 Hanger Rods and Fixtures

2.6.5 Supplementary Steel

PART 3 EXECUTION

3.1 PIPE INSTALLATION

3.2 VALVES

3.3 SUPPORTING ELEMENTS INSTALLATION

3.4 PENETRATIONS

SECTION 23 05 15 Page 2

3.5 SLEEVES

3.6 ESCUTCHEONS

3.7 FLASHINGS

3.8 UNDERGROUND PIPING INSTALLATION

3.9 HEAT TRACE CABLE INSTALLATION

3.10 DISINFECTION

3.11 HEAT TRACE CABLE TESTS

3.12 OPERATION AND MAINTENANCE

3.13 PAINTING OF NEW EQUIPMENT

3.13.1 Factory Painting Systems

3.13.2 Shop Painting Systems for Metal Surfaces

-- End of Section Table of Contents --

SECTION 23 05 15 Page 3

USACE / NAVFAC / AFCEC UFGS-23 05 15 (May 2022)

Change 2 - 08/24

Preparing Activity: NAVFAC Superseding UFGS-23 05 15 (February 2014)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated July 2025

SECTION 23 05 15

COMMON PIPING FOR HVAC

05/22, CHG 2: 08/24

NOTE: This guide specification covers the requirements for standard basic mechanical work and should be supplemented by use of other mechanical sections as required.

Show on the drawings detailed upstream and downstream piping anchor provisions.

Install flexible metallic pipe vertically to keep dirt out of convolutions.

Coordinate design detail and specification for each installation with the manufacturer to ensure that length, stiffness of hose, and slack are suitable for the intended offset, travel, and imposed service under normal and shock conditions.

Indicate on the drawings use of flexible metal steam for main steamline dripping where amount of expansion and contraction is such that movement cannot be readily accommodated by piping configuration, with excessive stress on pressurized components or where there is a tendency to cause leaks at connections to mains. Tunnels, trenches, manholes, and above-ground steamlines are prime locations; ensure the pressure rating accounts for water-hammer shock. This specification is limited to 15 millimeter through 25 millimeter 1/2 inch through 1 inch . Use welded pipe, valve, and hole connections wherever possible. Provide a welded end steam strainer upstream of hose to prevent welding bead penetration of bellows upon start up. Wherever possible, install flexible metal steam hose vertically.

Show on the Drawings, or supplement the specifications to include, calculated movement of piping, operating pressure and temperature ranges, fluid velocity, piping anchor and guiding

SECTION 23 05 15 Page 4 provisions, limit stops, installation length, end connections, and special conditions such as angular displacement and vibration analysis in one or more planes.

This specification does not include slip-type expansion joints or ball joints.

Adhere to UFC 1-300-02 Unified Facilities Guide Specifications (UFGS) Format Standard when editing this guide specification or preparing new project specification sections. Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable item(s) or insert appropriate information.

Remove information and requirements not required in respective project, whether or not brackets are present.

Comments, suggestions and recommended changes for this guide specification are welcome and 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 Reference Identifier (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 (2017) Steel Construction Manual

SECTION 23 05 15 Page 5

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME A112.18.1/CSA B125.1 (2024) Plumbing Supply Fittings

ASME A112.19.2/CSA B45.1 (2024) Standard for Vitreous China Plumbing Fixtures and Hydraulic Requirements for Water Closets and Urinals

ASME B1.20.7 (1991; R 2013) Standard for Hose Coupling Screw Threads (Inch)

ASME B1.21M (1997; R 2013; R 2018; R 2023) Standard for Metric Screw Threads - MJ Profile

ASME B16.1 (2020) Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250

ASME B16.3 (2021) Malleable Iron Threaded Fittings, Classes 150 and 300

ASME B16.4 (2021) Gray Iron Threaded Fittings;

Classes 125 and 250

ASME B16.5 (2020) Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard

ASME B16.9 (2024) Factory-Made Wrought Buttwelding Fittings

ASME B16.11 (2021) Forged Fittings, Socket-Welding and Threaded

ASME B16.22 (2021) Wrought Copper and Copper Alloy Solder Joint Pressure Fittings

ASME B16.25 (2022) Buttwelding Ends

ASME B16.26 (2024) Cast Copper Alloy Fittings for Flared Copper Tubes

ASME B16.34 (2021) Valves - Flanged, Threaded and Welding End

ASME B16.39 (2025) Malleable Iron Threaded Pipe Unions; Classes 150, 250, and 300

ASME B31.3 (2024) Process Piping

ASME B36.10M (2022) Welded and Seamless Wrought Steel Pipe

ASME B40.100 (2022) Pressure Gauges and Gauge Attachments

ASME BPVC SEC IX (2017; Errata 2018) BPVC Section IX-Welding, Brazing and Fusing Qualifications

ASME BPVC SEC VIII D1 (2023) BPVC Section VIII-Rules for

SECTION 23 05 15 Page 6

Construction of Pressure Vessels Division 1

AMERICAN WELDING SOCIETY (AWS)

AWS A5.8/A5.8M (2019) Specification for Filler Metals for Brazing and Braze Welding

AWS WHB-2.9 (2004) Welding Handbook; Volume 2, Welding Processes, Part 1

ASTM INTERNATIONAL (ASTM)

ASTM A6/A6M (2024b) Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

ASTM A53/A53M (2024) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A74 (2021) Standard Specification for Cast Iron Soil Pipe and Fittings

ASTM A105/A105M (2023) Standard Specification for Carbon Steel Forgings for Piping Applications

ASTM A106/A106M (2019a) Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service

ASTM A126 (2004; R 2023) Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings

ASTM A183 (2014; R 2020) Standard Specification for Carbon Steel Track Bolts and Nuts

ASTM A197/A197M (2020; R 2023; E 2023) Standard Specification for Cupola Malleable Iron

ASTM A216/A216M (2021) Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service

ASTM A234/A234M (2024) Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

ASTM A276/A276M (2025) Standard Specification for Stainless Steel Bars and Shapes

ASTM A278/A278M (2001; R 2024) Standard Specification for Gray Iron Castings for Pressure-Containing Parts for Temperatures Up to 650 degrees F (350 degrees C)

ASTM A307 (2023) Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60

SECTION 23 05 15 Page 7

000 PSI Tensile Strength

ASTM A312/A312M (2022a) Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A480/A480M (2025a) Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

ASTM A563 (2021; E 2022a) Standard Specification for Carbon and Alloy Steel Nuts

ASTM A563M (2007; R 2013) Standard Specification for Carbon and Alloy Steel Nuts (Metric)

ASTM A888 (2024) Standard Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications

ASTM B32 (2020) Standard Specification for Solder Metal

ASTM B62 (2017) Standard Specification for Composition Bronze or Ounce Metal Castings

ASTM B88 (2022) Standard Specification for Seamless Copper Water Tube

ASTM B88M (2020) Standard Specification for Seamless Copper Water Tube (Metric)

ASTM B117 (2019) Standard Practice for Operating Salt Spray (Fog) Apparatus

ASTM B370 (2022) Standard Specification for Copper Sheet and Strip for Building Construction

ASTM B749 (2025) Standard Specification for Lead and Lead Alloy Strip, Sheet and Plate Products

ASTM C67/C67M (2024) Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile

ASTM C109/C109M (2024) Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or (50-mm) Cube Specimens)

ASTM C404 (2024) Standard Specification for Aggregates for Masonry Grout

ASTM C476 (2023) Standard Specification for Grout for Masonry

ASTM C553 (2024) Standard Specification for Mineral Fiber Blanket Thermal Insulation for

SECTION 23 05 15 Page 8

Commercial and Industrial Applications

ASTM C564 (2020a) Standard Specification for Rubber Gaskets for Cast Iron Soil Pipe and Fittings

ASTM C920 (2018; R 2024) Standard Specification for Elastomeric Joint Sealants

ASTM D2000 (2018; R 2024) Standard Classification System for Rubber Products in Automotive Applications

ASTM D2308 (2007; R 2013) Standard Specification for Thermoplastic Polyethylene Jacket for Electrical Wire and Cable

ASTM E1 (2014; R 2025) Standard Specification for ASTM Liquid-in-Glass Thermometers

ASTM E84 (2024) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E814 (2024) Standard Test Method for Fire Tests of Penetration Firestop Systems

ASTM F104 (2011; R 2020) Standard Classification System for Nonmetallic Gasket Materials

ASTM F568M (2007) Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners

ASTM F2389 (2024a) Standard Specification for Pressure-rated Polypropylene (PP) Piping Systems

CAST IRON SOIL PIPE INSTITUTE (CISPI)

CISPI 310 (2012) Coupling for Use in Connection with Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications

FLUID SEALING ASSOCIATION (FSA)

FSA-0017 (1995e6) Standard for Non-Metallic Expansion Joints and Flexible Pipe Connectors Technical Handbook

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 515 (2017) Standard for the Testing, Design, Installation, and Maintenance of Electrical Resistance Heat Tracing for Industrial Applications

IEEE C2 (2023) National Electrical Safety Code

SECTION 23 05 15 Page 9

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-58 (2018) Pipe Hangers and Supports - Materials, Design and Manufacture, Selection, Application, and Installation

MSS SP-67 (2022) Butterfly Valves

MSS SP-70 (2011) Gray Iron Gate Valves, Flanged and Threaded Ends

MSS SP-72 (2010a) Ball Valves with Flanged or Butt-Welding Ends for General Service

MSS SP-80 (2019) Bronze Gate, Globe, Angle, and Check Valves

MSS SP-110 (2010) Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends

MSS SP-125 (2010) Gray Iron and Ductile Iron In-Line, Spring-Loaded, Center-Guided Check Valves

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG 1 (2021) Motors and Generators

NEMA MG 10 (2017) Energy Management Guide for Selection and Use of Fixed Frequency Medium AC Squirrel-Cage Polyphase Induction Motors

NEMA MG 11 (1977; R 2012) Energy Management Guide for Selection and Use of Single Phase Motors

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2023; ERTA 1 2024; TIA 24-1; TIA 25-2)

National Electrical Code

NSF INTERNATIONAL (NSF)

NSF/ANSI 14 (2024) Plastics Piping System Components and Related Materials

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-C-18480 (1982; Rev B; Notice 2 2009; Notice 3 2022) Coating Compound, Bituminous, Solvent, Coal-Tar Base

MIL-DTL-17813 (2009; Rev H; Supp 1 2009; Notice 1 2013;

Notice 2 2018; Notice 3 2023) Expansion Joints, Pipe, Metallic Bellows, General Specification for

SECTION 23 05 15 Page 10

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

CID A-A-1922 (Rev A; Notice 1; Notice 2; Notice 3;

Notice 4) Shield, Expansion (Caulking Anchors, Single Lead)

CID A-A-1923 (Rev A; Notice 1; Notice 2; Notice 3;

Notice 4) Shield, Expansion (Lag, Machine and Externally Threaded Wedge Bolt Anchors)

CID A-A-1924 (Rev A; Notice 3) Shield, Expansion (Self Drilling Tubular Expansion Shell Bolt Anchors

CID A-A-1925 (Rev A; Notice 1; Notice 2; Notice 3;

Notice 4) Shield Expansion (Nail Anchors)

CID A-A-55614 (Basic; Notice 2) Shield, Expansion (Non-Drilling Expansion Anchors)

CID A-A-55615 (Basic; Notice 1; Notice 2; Notice 3;

Notice 4) Shield, Expansion (Wood Screw and Lag Bolt Self-Threading Anchors

UL SOLUTIONS (UL)

UL 1479 (2015; Reprint Apr 2025) UL Standard for Safety Fire Tests of Penetration Firestops

1.2 GENERAL REQUIREMENTS

NOTE: If Section 23 30 00 HVAC AIR DISTRIBUTION is not included in the project specification, applicable requirements thereof should be inserted and the first paragraph deleted. If Section 23 05 48.19 SEISMIC BRACING FOR HVAC is not included in the project specification, applicable requirements thereof should be inserted and the second paragraph deleted. If Section 40 05 13.96 WELDING PROCESS PIPING is not included in the project specification, applicable requirements thereof should be inserted and the third paragraph deleted.

[ a. Section 23 30 00 HVAC AIR DISTRIBUTION applies to work specified in this section

][ b. Section 23 05 48.19 SEISMIC BRACING FOR HVAC applies to work specified in this section.

][ c. Section 40 05 13.96 WELDING PROCESS PIPING applies to work specified in this section.

] d. Submit Records of Existing Conditions consisting of the results of Contractor's survey of work area conditions and features of existing structures and facilities within and adjacent to the jobsite.

Commencement of work constitutes acceptance of the existing conditions.

SECTION 23 05 15 Page 11

e. Include with Equipment Foundation Data for piping systems all plan dimensions of foundations and relative elevations, equipment weight and operating loads, horizontal and vertical loads, horizontal and vertical clearances for installation, and size and location of anchor bolts.

f. Submit Fabrication Drawings for pipes, valves and specialties consisting of fabrication and assembly details to be performed in the factory.

g. Submit Material, Equipment, and Fixture Lists for pipes, valves and specialties including manufacturer's style or catalog numbers, specification and drawing reference numbers, warranty information, and fabrication site information. Provide a complete list of construction equipment to be used.

h. Submit Manufacturer's Standard Color Charts for pipes, valves and specialties showing the manufacturer's recommended color and finish selections.

i. Include with Listing of Product Installations for piping systems identification of at least 5 units, similar to those proposed for use, that have been in successful service for a minimum period of 5 years.

Include in the list purchaser, address of installation, service organization, and date of installation.

j. Submit Record Drawings for pipes, valves and accessories providing current factual information including deviations and amendments to the drawings, and concealed and visible changes in the work.

k. Submit Connection Diagrams for pipes, valves and specialties indicating the relations and connections of devices and apparatus by showing the general physical layout of all controls, the interconnection of one system (or portion of system) with another, and internal tubing, wiring, and other devices.

l. Submit Coordination Drawings for pipes, valves and specialties showing coordination of work between different trades and with the structural and architectural elements of work. Detail all drawings sufficiently to show overall dimensions of related items, clearances, and relative locations of work in allotted spaces. Indicate on drawings where conflicts or clearance problems exist between various trades.

1.3 SUBMITTALS

NOTE: Review Submittal Description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list, and corresponding submittal items in the text, to reflect only the submittals required for the project. The Guide Specification technical editors have classified those items that require Government approval, due to their complexity or criticality, with a "G." Generally, other submittal items can be reviewed by the Contractor's Quality Control System. Only add a “G” to an item, if the submittal is sufficiently important or complex in context of the project.

SECTION 23 05 15 Page 12

For Army projects, fill in the empty brackets following the "G" classification, with a code of up to three characters 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 and Air Force projects.

The "S" classification indicates submittals required as proof of compliance for sustainability Guiding Principles Validation or Third Party Certification and as described in Section 01 33 00 SUBMITTAL

PROCEDURES.

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification 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

Material, Equipment, and Fixture Lists [; G, [_____] ]

SD-02 Shop Drawings

Record Drawings [; G, [_____] ]

Connection Diagrams [; G, [_____] ]

Coordination Drawings [; G, [_____] ]

Fabrication Drawings [; G, [_____] ]

Installation Drawings [; G, [_____] ]

SD-03 Product Data

Pipe and Fittings [; G, [_____] ]

Piping Specialties [; G, [_____] ]

Valves [; G, [_____] ]

Miscellaneous Materials [; G, [_____] ]

Supporting Elements [; G, [_____] ]

Equipment Foundation Data [; G, [_____] ]

SD-04 Samples

SECTION 23 05 15 Page 13

Manufacturer's Standard Color Charts [; G, [_____] ]

SD-05 Design Data

Pipe and Fittings [; G, [_____] ]

Piping Specialties [; G, [_____] ]

Valves [; G, [_____] ]

SD-06 Test Reports

Hydrostatic Tests [; G, [_____] ]

Air Tests [; G, [_____] ]

Valve-Operating Tests [; G, [_____] ]

Drainage Tests [; G, [_____] ]

Pneumatic Tests [; G, [_____] ]

Non-Destructive Electric Tests [; G, [_____] ]

System Operation Tests [; G, [_____] ]

SD-07 Certificates

Record of Satisfactory Field Operation [; G, [_____] ]

List of Qualified Permanent Service Organizations [; G, [_____] ]

Listing of Product Installations [; G, [_____] ]

Records of Existing Conditions [; G, [_____] ]

Surface Resistance [; G, [_____] ]

Shear and Tensile Strengths [; G, [_____] ]

Temperature Ratings [; G, [_____] ]

Bending Tests [; G, [_____] ]

Flattening Tests [; G, [_____] ]

Transverse Guided Weld Bend Tests [; G, [_____] ]

SD-10 Operation and Maintenance Data

Operation and Maintenance Manuals [; G, [_____] ]

1.4 QUALITY ASSURANCE

1.4.1 Material and Equipment Qualifications

Provide materials and equipment that are standard products of manufacturers regularly engaged in the manufacture of such products, which

SECTION 23 05 15 Page 14 are of a similar material, design and workmanship. Provide standard products in satisfactory commercial or industrial use for 2 years prior to bid opening. The 2-year use includes applications of equipment and materials under similar circumstances and of similar size. Ensure the product has been for sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2 year period.

1.4.2 Alternative Qualifications

Products having less than a two-year field service record are acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturer's factory or laboratory tests, can be shown.

1.4.3 Service Support

Ensure the equipment items are supported by service organizations. Submit a certified list of qualified permanent service organizations for support of the equipment which includes their addresses and qualifications.

Select service organizations that are reasonably convenient to the equipment installation and able to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

1.4.4 Manufacturer's Nameplate

Provide a nameplate on each item of equipment bearing the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent is not acceptable.

1.4.5 Modification of References

In each of the publications referred to herein, consider the advisory provisions to be mandatory, as though the word, "shall" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of similar meaning, to mean the Contracting Officer.

1.4.5.1 Definitions

For the International Code Council (ICC) Codes referenced in the contract documents, advisory provisions are considered mandatory, the word "should" is interpreted as "shall." Reference to the "code official" is interpreted to mean the "Contracting Officer." For Navy owned property, interpret references to the "owner" to mean the "Contracting Officer."

For leased facilities, references to the "owner" is interpreted to mean the "lessor." References to the "permit holder" are interpreted to mean the "Contractor."

1.4.5.2 Administrative Interpretations

For ICC Codes referenced in the contract documents, the provisions of Chapter 1, "Administrator," do not apply. These administrative requirements are covered by the applicable Federal Acquisition Regulations (FAR) included in this contract and by the authority granted to the Officer in Charge of Construction to administer the construction of this project. References in the ICC Codes to sections of Chapter 1, are applied as appropriate by the Contracting Officer and as authorized by his

SECTION 23 05 15 Page 15 administrative cognizance and the FAR.

1.5 DELIVERY, STORAGE, AND HANDLING

Handle, store, and protect equipment and materials to prevent damage before and during installation in accordance with the manufacturer's recommendations, and as approved by the Contracting Officer. Replace damaged or defective items.

[ 1.6 ELECTRICAL REQUIREMENTS

NOTE: Use this paragraph for other than SOUTHNAVFACENGCOM projects.

Furnish motors, controllers, disconnects and contactors with their respective pieces of equipment. Ensure motors, controllers, disconnects and contactors conform to and have electrical connections provided under Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM. Furnish internal wiring for components of packaged equipment as an integral part of the equipment.

Extended voltage range motors is not permitted. Provide controllers and contactors with a maximum of 120 volt control circuits, and auxiliary contacts for use with the controls furnished. When motors and equipment furnished are larger than sizes indicated, include the cost of additional electrical service and related work under the section that specified that motor or equipment. Provide power wiring and conduit for field installed equipment under and conform to the requirements of Section 26 20 00

INTERIOR DISTRIBUTION SYSTEM.

][ 1.7 ELECTRICAL INSTALLATION REQUIREMENTS

NOTE: Use this paragraph and its subparagraphs regarding electrical components and energy efficient motors for SOUTHNAVFACENGCOM projects.

Ensure electrical installations conform to IEEE C2 , NFPA 70 , and requirements specified herein.

1.7.1 New Work

Provide electrical components of mechanical equipment, such as motors, motor starters [(except starters/controllers which are indicated as part of a motor control center)], control or push-button stations, float or pressure switches, solenoid valves, integral disconnects, and other devices functioning to control mechanical equipment, as well as control wiring and conduit for circuits rated 100 volts or less, to conform with the requirements of the section covering the mechanical equipment.

Extended voltage range motors are not permitted. Provide under Division 26, the interconnecting power wiring and conduit, control wiring rated 120 volts (nominal) and conduit, [the motor control equipment forming a part of motor control centers,] and the electrical power circuits, except internal wiring for components of package equipment is provided as an integral part of the equipment. When motors and equipment furnished are larger than sizes indicated, provide any required changes to the electrical service as may be necessary and related work as a part of the work for the section specifying that motor or equipment.

SECTION 23 05 15 Page 16

1.7.2 Modifications to Existing Systems

Where existing mechanical systems and motor-operated equipment require modifications, provide electrical components under Division 26.

1.7.3 High Efficiency Motors

1.7.3.1 High Efficiency Single-Phase Motors

Unless otherwise specified, provide high efficiency single-phase fractional-horsepower alternating-current motors corresponding to the applications listed in NEMA MG 11.

1.7.3.2 High Efficiency Polyphase Motors

Unless otherwise specified, select polyphase motors based on high efficiency characteristics relative to the applications as listed in NEMA MG 10. Additionally, ensure polyphase squirrel-cage medium induction motors with continuous ratings meet or exceed energy efficient ratings in accordance with Table 12-6C of NEMA MG 1.

1.7.4 Three-Phase Motor Protection

Provide controllers for motors rated one 1.34 kilowatts one horsepower and larger with electronic phase-voltage monitors designed to protect motors from phase-loss, undervoltage, and overvoltage. Provide protection for motors from immediate restart by a time adjustable restart relay.

] 1.8 INSTRUCTION TO GOVERNMENT PERSONNEL

When specified in other sections, furnish the services of competent instructors to give full instruction to the designated Government personnel in the adjustment, operation, and maintenance, including pertinent safety requirements, of the specified equipment or system.

Provide instructors thoroughly familiar with all parts of the installation and trained in operating theory as well as practical operation and maintenance work.

Give instruction during the first regular work week after the equipment or system has been accepted and turned over to the Government for regular operation. The number of man-days (8 hours per day) of instruction furnished is as specified in the individual section. When more than four man-days of instruction are specified, use approximately half of the time for classroom instruction. Use other time for instruction with the equipment or system.

When significant changes or modifications in the equipment or system are made under the terms of the contract, provide additional instruction to acquaint the operating personnel with the changes or modifications.

1.9 ACCESSIBILITY

NOTE: The following requirement is intended to solicit the installer's help in the prudent location of equipment when he has some control over locations. However, designers should not rely on it at all since enforcing this requirement in the field

SECTION 23 05 15 Page 17 would be difficult. Therefore, the system designer needs to layout and indicate the locations of equipment, control devices, and access doors so that most of the accessibility questions are resolved inexpensively during design.

Install all work so that parts requiring periodic inspection, operation, maintenance, and repair are readily accessible. Install concealed valves, expansion joints, controls, dampers, and equipment requiring access, in locations freely accessible through access doors.

PART 2 PRODUCTS

2.1 ELECTRICAL HEAT TRACING

Provide heat trace systems for pipes, valves, and fittings that are in accordance with IEEE 515 and be UL listed. System include all necessary components, including heaters and controls to prevent freezing.

Provide self-regulating heaters consisting of two 16 AWG tinned-copper bus wires embedded in parallel in a self-regulating polymer core that varies its power output to respond to temperature along its length. Ensure heater is able to be crossed over itself without overheating. Obtain approval before used directly on plastic pipe. Cover heater with a radiation cross-linked modified polyolefin dielectric jacket in accordance with ASTM D2308.

[ For installation on plastic piping, apply the heater using aluminum tape.

Provide heater with an outer braid of tinned-copper and an outer jacket of modified polyolefin in accordance with ASTM D2308, to provide a good ground path and to enhance the heater's ruggedness.

NOTE: Self-regulation factor is defined as the percentage reduction, without thermostatic control, of the heater output going from 4 degrees C 40 degrees F pipe temperature operation to 66 degrees C 150 degrees F pipe temperature operation.

Provide heater with self-regulating factor of at least [90] [_____] percent, in order to provide energy conservation and to prevent overheating.

Operate heater on line voltages of [120] [208] [220] [240] [277] volts without the use of transformers.

NOTE: Required heater output rating is in watts per meter at 10 degrees C foot at 50 degrees F . Heater selection based on 25 millimeter one-inch fiberglass insulation on metal piping.

Size Heater according to the following table:

Pipe Size (DN)

SECTION 23 05 15 Page 18

(Millimeter Diameter) Minus 23 degrees C Minus 29 degrees C

80 or less 16 watts per meter (wpm) 16 watts per meter (wpm)

100 16 wpm 26 wpm

150 26 wpm 26 wpm

200 2 strips/16 wpm 2 strips/26 wpm

300 to 356 2 strips/26 wpm 2 strips/26 wpm

Pipe Size

(Inch, Diameter) Minus 10 degrees F Minus 20 degrees F

3 inches or less 5 watts per foot (wpf) 5 wpf

4 inch 5 wpf 8 wpf

6 inch 8 wpf 8 wpf

8 inch 2 strips/5 wpf 2 strips/8 wpf

12 inch 2 strips/8 wpf 2 strips/8 wpf

Control systems by an ambient sensing thermostat set at 4 degrees C 40 degrees F either directly or through an appropriate contactor.

2.2 PIPE AND FITTINGS

NOTE: Do not use press fittings on NAVFAC projects. Do not use grooved connections on NAVFAC projects.

Submit equipment and performance data for pipe and fittings consisting of corrosion resistance, life expectancy, gage tolerances, and grade line analysis. Submit design analysis and calculations consisting of surface resistance, rates of flow, head losses, inlet and outlet design, required radius of bend, and pressure calculations. Also include in data pipe size, shape, and dimensions, as well as temperature ratings, vibration and thrust limitations minimum burst pressures, shut-off and non-shock pressures and weld characteristics.

2.2.1 Type BCS, Black Carbon Steel

NOTE: This pipe is applicable for chilled, hot, dual-temperature, and cooling-tower water. Refer to Specification Section 23 64 26 for system details.

Ensure pipe DN6 through DN300 1/8 through 12 inches is Schedule 40 black

SECTION 23 05 15 Page 19 carbon steel, conforming to ASTM A53/A53M.

Ensure pipe DN6 through DN250 1/8 through 10 inches is Schedule 40 seamless or electric-resistance welded black carbon steel, conforming to ASTM A53/A53M, [Type E, Grade B (electric-resistance welded)] [Type S (seamless)]. Grade A should be used for permissible field bending, in both cases.

Ensure pipe DN300 through DN610 12 through 24 inches is 9.52 millimeter 0.375-inch wall seamless black carbon steel, conforming to ASTM A53/A53M, [Type E, Grade B (electric-resistance welded)] [Type S (seamless)].

Ensure fittings DN50 and under 2 inches and under are 1034 kilopascal 150-pounds per square inch, gage (psig) working steam pressure (wsp) banded black malleable iron screwed, conforming to ASTM A197/A197M and

ASME B16.3 .

Ensure unions DN50 and under 2 inches and under are 1724 kilopascal 250 pounds per square inch, wsp female, screwed, black malleable iron with brass-to-iron seat, and ground joint, conforming to ASME B16.39 .

Ensure fittings DN65 and over 2-1/2 inches and over are Steel butt weld, conforming to ASTM A234/A234M and ASME B16.9 to match pipe wall thickness.

Ensure flanges DN65 and over 2-1/2 inches and over are 1034 kilopascal 150-pound forged-steel conforming to ASME B16.5 , welding neck to match pipe wall thickness.

2.2.2 Type BCS-125, 862 kilopascal Service 125-psi Service

NOTE: This pipe is applicable for steam- and condensate-piping systems at pressures less than 862 kilopascal 125 pounds per square inch (psi) . Avoid screwed-end connections in condensate piping wherever possible. See Section 23 64 26 CHILLED, CHILLED-HOT, AND CONDENSER WATER PIPING SYSTEMS for black carbon steel pipe for higher pressure ratings.

Ensure pipe DN6 through DN40 1/8 through 1-1/2 inches is Schedule 40 steam, Schedule 80 condensate, furnace butt weld, black carbon steel, conforming to ASTM A53/A53M, Type F (furnace butt welded, continuous welded) and ASME B36.10M.

Ensure pipe DN50 through DN250 2 through 10 inches is Schedule 40 steam, Schedule 80 condensate, seamless or electric-resistance welded black carbon steel, conforming to ASTM A53/A53M [Type E, Grade B (electric-resistance welded)] [Type S (seamless)] and ASME B36.10M.

NOTE: For condensate piping, modify following (for DN300 12 inches and over) to schedule 40 or schedule 80, if necessary.

Ensure pipe DN300 through DN610 12 through 24 inches is 9.52 millimeter 0.375-inch wall, [seamless] [electric-resistance] welded black carbon steel, conforming to ASTM A53/A53M [Type E, Grade B (electric-resistance

SECTION 23 05 15 Page 20 welded)] [Type S (seamless) and ASME B36.10M].

[ Ensure fittings DN50 and under 2 inches and under are 862 kilopascal 125-psig wsp, cast iron, screwed end, conforming to ASTM A126 Class A and

ASME B16.4 .

][ Ensure fittings DN50 and under 2 inches and under are 1034 kilopascal 150-psig wsp banded black malleable iron screwed, conforming to ASTM A197/A197M and ASME B16.3 .

][ Ensure fittings DN25 through DN50 1 through 2 inches are 14 or 21 megapascal 2,000-or 3,000-psi water, oil, or gas (wog) to match pipe wall, forged carbon steel socket weld, conforming to ASTM A105/A105M and

ASME B16.11 .

][ Ensure fittings DN50 and under 2 inches and under are 862 kilopascal 125-psig wsp, cast iron, screwed end, conforming to ASTM A126 Class A and

ASME B16.4 .

][ Ensure fittings DN65 and over 2-1/2 inches and over are wall thickness to match pipe, long radius butt weld, black carbon steel, conforming to ASTM A234/A234M , Grade WPB and ASME B16.9 .

][ Ensure couplings DN50 and under 2 inches and under are commercial standard weight for Schedule 40 pipe and commercial extra heavy weight for Schedule 80 pipe, black carbon steel where threaded, and 14 or 21 megapascal 2,000-or 3,000-psi wog forged carbon steel, conforming to ASTM A105/A105M and ASME B16.11 , where welded.

][ Ensure flanges DN65 and over 2-1/2 inches and over are 1035 kilopascal, 150-pound, forged carbon-steel welding neck, with raised face or flat face and concentric serrated finish, conforming to ASTM A105/A105M and

ASME B16.5 .

][ Conform grooved pipe couplings and fittings in accordance with paragraph

GROOVED PIPE COUPLINGS AND FITTINGS.

] 2.2.3 Type GCS, Galvanized Carbon Steel

NOTE: This pipe is applicable for potable water and rain water leader systems.

Ensure pipe DN15 through DN250, and where indicated 1/2 through 10 inches, and where indicated is Schedule 40 seamless or electric-resistance welded galvanized steel conforming to ASTM A53/A53M, Type E, Grade B (electric-resistance welded) or Type S (seamless).

Ensure pipe DN300 and over 12 inches and over is 9.52 millimeter 0.375-inch wall, seamless, galvanized steel, conforming to ASTM A53/A53M, Grade B.

Ensure fittings DN50 and under 2 inches and under are 1034 kilopascal 150-psig wsp banded galvanized malleable iron screwed, conforming to ASTM A197/A197M and ASME B16.3 .

Ensure unions DN50 and under 2 inches and under are 1034 kilopascal 150-psig wsp female, screwed, galvanized malleable iron with brass-to-iron seat and ground joint.

SECTION 23 05 15 Page 21

Ensure fittings DN65 and over 2-1/2 inches and over are 862 kilopascal 125-psig wsp cast-iron flanges and flanged fittings, conforming to ASTM A126, Class A and ASME B16.1 .

Conform grooved pipe couplings and fittings in accordance with paragraph

GROOVED PIPE COUPLINGS AND FITTINGS.

As an option, use 1034 kilopascal 150-psig wsp banded galvanized malleable iron screwed fittings, conforming to ASTM A197/A197M and ASME B16.3 .

2.2.4 Type GCS-DWV, Galvanized Steel Drain, Waste and Vent

NOTE: Nonferrous piping exposed to view in finished spaces and normally chrome plated is specified in Section 22 00 00 PLUMBING, GENERAL PURPOSE. Select A53 pipe where bending and flattening tests are required.

Ensure pipe (all sizes) is Schedule 40 [seamless] [electric-resistance welded] galvanized carbon steel, conforming to ASTM A53/A53M, Grade A.

Furnace butt weld pipe is acceptable for sizes less than DN50 2 inches .

[ Provide risers DN80 3 inches and larger are Type CISP-DWV.

][ Ensure fittings are galvanized, [coated] [uncoated], screwed, cast iron, recessed pattern drainage fittings, conforming to ASTM A126.

][ Use long radius fittings wherever space permits. Short-turn tees, branches, and ells may be used for vent piping and connections of branch lines to battery fixtures, except wall-hung water closets.

] 2.2.5 Type CISP-DWV, Cast-Iron Drain, Waste and Vent

NOTE: When project requires risers DN80 3 inches and larger, include Type CISP-DWV materials specification.

[ Provide soil pipe drain, waste, and vent bell-and-spigot type pipe cast iron, conforming to ASTM A74.[ Joints shall be two-gasket system type neoprene, conforming to ASTM C564.][ Caulk and lead all joints in lines to provide proper leaktight support and alignment.] Select the extra heavy (CISP-DWV-XH) pipe class.

][ Provide soil pipe drain, waste, and vent hubless cast iron pipe and fittings, conforming to ASTM A888. Joints shall be heavyweight no-hub couplings with stainless steel clamps, conforming to CISPI 310 .

] 2.2.6 Type CPR, Copper

NOTE: Copper pipe above ground and below ground is acceptable for chilled, hot, dual-temperature, cooling-tower water, and potable-water systems.

SECTION 23 05 15 Page 22

Refer to Sections 23 64 26 CHILLED, CHILLED-HOT, AND CONDENSER WATER PIPING SYSTEMS and 22 00 00 PLUMBING, GENERAL PURPOSE for system details.

2.2.6.1 Type CPR-A, Copper Above Ground

Ensure tubing DN50 and under 2 inches and under is seamless copper tubing, conforming to ASTM B88M, ASTM B88, Type L (hard-drawn for all horizontal and all exposed vertical lines, annealed for concealed vertical lines).

Ensure fittings DN50 and under 2 inches and under are 1034 kilopascal 150-psig wsp wrought-copper solder joint fittings conforming to ASME B16.22 .

Ensure unions DN50 and under 2 inches and under are 1034 kilopascal 150-psig wsp wrought-copper solder joint, conforming to ASME B16.22 .

[ Provide brazing rod with Classification BCuP-5, conforming to

AWS A5.8/A5.8M .

][ Use solder, alloy Sb-5, conforming to ASTM B32.

] 2.2.6.2 Type CPR-U, Copper Under Ground

NOTE: For sizes under DN80 3 inches .

Provide Type K seamless copper tube piping, conforming to ASTM B88M ASTM B88. Use wrought copper socket-joint fittings, conforming to ASME B16.22 . Ensure fittings for connection to corporation cocks are cast bronze, flared-type, conforming to ASME B16.26 . Braze the joints.

2.2.6.3 Type CPR-INS, Copper Under Ground Insulated

NOTE: Type CPR-INS material is commercially available in sizes to and including DN105 4 inches

OD.

Since pipe is protected from soil by insulation system, Type L copper tube may be used if suitable for water carried at a cost saving of 10 percent.

Type CPR-INS material may be used for hot water supply and return connected to tunnel mains.

Provide insulated Type K seamless copper tube piping conforming to ASTM B88M ASTM B88. Use wrought copper socket-joint fittings, conforming to ASME B16.22 . Braze the joints.

Provide insulation not less than DN50 2 inches thick, suitable for continuous service temperatures of not less than 121 degrees C 250 degrees F. Use factory-molded, closed-cell polyurethane foam insulation of not less than 40 kilogram per cubic meter 2.5 pounds per cubic foot density.

Waterproof insulation with an extruded rigid Type II virgin polyvinylchloride, with minimum wall thickness of 1.52 millimeter through 102 millimeter 60 mils through 4 inches outside diameter, 2.16 millimeter

SECTION 23 05 15 Page 23 through 168.28 millimeter 85 mils through 6.625 inches and 2.79 millimeter through 273 millimeter 110 mils through 12.750 inches . Provide fitting covers fabricated from the same materials and thickness as adjacent pipe covering according to the manufacturer's directions.

2.2.7 Polypropylene Pipe

Pipe is manufactured from a PP-R resin meeting the short-term properties and long-term strength requirements of ASTM F2389. Pipe is made in a three layer extrusion process. Piping contains a fiber layer (faser) to restrict thermal expansion. Pipe complies with the rated pressure requirements of ASTM F2389. Ensure layers are incorporated in the pipe wall to limit thermal expansion to 3.38 cm per degree C per meter 2 1/4-inches per 100 F per 100-ft . If the hydronic system includes ferrous components, an oxygen barrier is required in pipe wall.

Ensure pipe is certified by NSF International as complying with NSF/ANSI 14 , and ASTM F2389.

Ensure pipe wrap or insulation meets the requirements of ASTM E84. Ensure the system has a Flame Spread Classification of less than 25 and Smoke Development rating of less than 50.

Where pipe is exposed to direct UV light for more than 30 days, provide a Factory applied, UV-resistant coating or alternative UV protection.

2.2.8 Grooved Pipe Couplings and Fittings

NOTE: Do not use grooved connections on NAVFAC projects.

Provide housing for all couplings, fabricated in two or more parts, of black, ungalvanized malleable iron castings. Ensure coupling gasket is molded synthetic rubber, conforming to ASTM D2000. Ensure coupling bolts are oval-neck, track-head type, with hexagonal heavy nuts conforming to

ASTM A183.

Fabricate all pipe fittings used with couplings of black, ungalvanized malleable iron castings. Where a manufacturer's standard-size malleable iron fitting pattern is not available, approved fabricated fittings may be used.

Fabricate fittings from Schedule 40 or 19 millimeter 0.75-inch wall ASTM A53/A53M, Grade B seamless steel pipe; long radius seamless welding fittings with wall thickness to match pipe, conforming to ASTM A234/A234M and ASME B16.9 .

2.3 PIPING SPECIALTIES

Submit equipment and performance data for piping specialties consisting of corrosion resistance, life expectancy, gage tolerances, and grade line analysis. Submit design analysis and calculations consisting of surface resistance, rates of flow, head losses, inlet and outlet design, required radius of bend, and pressure calculations. Also include in data pipe size, shape, and dimensions, as well as temperature ratings, vibration and thrust limitations minimum burst pressures, shut-off and non-shock pressures and weld characteristics.

SECTION 23 05 15 Page 24

2.3.1 Air Separator

Air separated from converter discharge water is ejected by a reduced-velocity device vented to the compression tank.

[ Provide a commercially constructed separator, designed and certified to separate not less than 80 percent of entrained air on the first passage of water and not less than 80 percent of residual on each successive pass.

Provide shop drawings detailing all piping connections proposed for this work.

][ Ensure the air separator is carbon steel, designed, fabricated, tested, and stamped in conformance with ASME BPVC SEC VIII D1 for service pressures not less than 862 kilopascal 125 psi .

] 2.3.2 Air Vents

[ Provide manual air vents using 10 millimeter 3/8-inch globe valves.

NOTE: This size vent is suitable for most systems, and passes 9.40 liter per second of free air 20 cubic feet of free air per minute at a system pressure of 862 kilopascal 125 psi . Where a system is filled at a certain rate, larger vents or a multiple assembly with safety features should be used.

[ Provide automatic air vents on pumps, mains, and where indicated using ball-float construction. Ensure the vent inlet is not less than DN20 3/4-inch ips and the outlet not less than 8 millimeter 1/4-inch ips .

Orifice size is 3 millimeter 1/8 inch . Provide corrosion-resistant steel trim conforming to [ ASTM A276/A276M ] [ ASTM A480/A480M ]. Fit vent with try-cock. Ensure vent discharges air at any pressure up to 1034 kilopascal 150 psi . Ensure outlet is copper tube routed.

] 2.3.3 Compression Tank

Provide compression tank designed, fabricated, tested, and stamped for a working pressure of not less than 862 kilopascal 125 psi in accordance with ASME BPVC SEC VIII D1 . Ensure tank is hot-dip galvanized after fabrication to produce not less than 51 grams 1.5 ounces of zinc coating per square meter foot of single-side surface.

Tank accessories include red-lined gage-glass complete with glass protectors and shutoff valves, air charger and drainer, and manual vent.

2.3.4 Dielectric Connections

Electrically isolate dissimilar pipe metals from each other by couplings, unions, or flanges commercially manufactured for that purpose and rated for the service pressure and temperature.

2.3.5 Expansion Vibration Isolation Joints

NOTE: Drawings should show detailed piping anchor

SECTION 23 05 15 Page 25 provisions where expansion vibration isolation joints are used.

This joint may also serve as a dielectric connector.

Construct single or multiple arch-flanged expansion vibration isolation joints of steel-ring reinforced chloroprene-impregnated cloth materials.

Design joint to absorb the movement of the pipe sections in which installed with no detrimental effect on the pipe or connected equipment.

Back flanges with ferrous-metal backing rings. Provide control rod assemblies to restrict joint movement. Coat all nonmetallic exterior surfaces of the joint with chlorosulphonated polyethylene. Provide grommets in limit bolt hole to absorb noise transmitted through the bolts.

NOTE: If other elastomers are substituted for chloroprene, temperature limits may be lowered to 82 degrees C 180 degrees F or less.

Ensure joints are suitable for continuous-duty working temperature of at least 121 degrees C 250 degrees F .

NOTE: Select the following paragraph where solids accumulating in arch would cause cutting of carcass.

Note that all movements will be reduced by 50 percent.

Fill arches with soft chloroprene.

Ensure joint, single-arch, movement limitations and size-related, pressure characteristics conform to FSA-0017 .

2.3.6 Flexible Pipe

NOTE: Drawings should show detailed upstream and downstream piping anchor provisions and location with respect to axis of motion where flexible pipe is used.

Grooved couplings and…