Am-0010_W9128F20R0002.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

W9128F

CONSOLIDATED SPACE OPERATIONS FACILITY, PNGLEN203001 (FY20), SCHRIEVER AFB, COLORADO

See attached documentation for content of the amendment revisions to solicitation

Date for receipt of Volume II proposals is 10 JUN 2021 at 1400 hours

Government Point of Contact: Melissa Harlon, Contract Specialist, Melissa.R.Harlon@usace.army.mil

U.S.ARMY CORPS OF ENGINEERS, OMAHA DIST

Attn: CONTRACTING DIVISION (CENWO-CT-M)

1616 CAPITOL AVENUE

OMAHA, NE 68102-4901

See Item 6

W9128F20R0002

08 Jun 21

23-Mar-2021

08 Jun 21

Am #0010 - 1

Am #0010 - 2 (Continuation SF 30)

08 JUN 2021

Solicitation No. W9128F 20 R 0002

Date of Issue: 23 MAR 2021 Date of Receiving Volume II Proposals: 10 JUN 2021

SUBJECT: Amendment No. 0010 to Request for Proposal Solicitation Package for Construction of CONSOLIDATED SPACE OPERATIONS FACILITY.

TO: Prospective Offerors and Others Concerned

1. The specifications and drawings for subject project are hereby modified as follows (revise all specification indices, attachment lists, and drawing indices accordingly).

a. Specifications. (Descriptive Changes.) NONE

b. Specifications (New and/or Revised and Reissued). Delete and substitute or add specification sections as noted below. The substituted sections are revised and reissued with this amendment. For convenience, on the revised specification pages, changes have been identified with highlighting unless section is noted as new or completely reissued; all portions of the revised specification pages apply regardless of whether changes are shown with highlighting.

VOLUME 2 SPECIFICATIONS – CSOF:

Pages or Sections Deleted Pages or Sections Substituted or Added 23 64 26 23 64 26 25 05 11.06 25 05 11.06 33 52 10 33 52 10

c. Drawings (Reissued). The following drawings are revised with latest revision date as shown in the drawing border and reissued with this amendment.

CSOF PACKAGE - VOLUME 1 OF 8 – LIFE SAFETY, CIVIL, LANDSCAPE:

(1) Sheet CS101, CIVIL SITE PLAN - SHEET 1

(2) Sheet CS501, CIVIL SITE DETAILS - SHEET 1

(3) Sheet CS514, CIVIL SITE DETAILS - SHEET 14

CSOF PACKAGE – VOLUME 2 of 8 – STRUCTURAL:

(1) Sheet S-119, 1ST FLOOR SLAB AND FRAMING PLAN – SECTOR 9

(2) Sheet S-119A, 1ST FLOOR SLAB AND FRAMING PLAN A – SECTOR 9 – BID

OPTION

CSOF PACKAGE – VOLUME 3 of 8 – ARCHITECTURAL:

(1) Sheet A-737, CEILING DETAILS

Am #0010 - 3

CSOF PACKAGE – VOLUME 4 of 8 – INTERIOR DESIGN:

(1) Sheet I-111, 1ST FLOOR SECTOR 1 FINISH PLAN

(2) Sheet I-112, 1ST FLOOR SECTOR 2 FINISH PLAN

(3) Sheet I-113, 1ST FLOOR SECTOR 3 FINISH PLAN

(4) Sheet I-114, 1ST FLOOR SECTOR 4 FINISH PLAN

(5) Sheet I-115, 1ST FLOOR SECTOR 5 FINISH PLAN

(6) Sheet I-116, 1ST FLOOR SECTOR 6 FINISH PLAN - BASE BID

(7) Sheet I-116A, 1ST FLOOR - SECTOR 6 FINISH PLAN - BID OPTION

(8) Sheet I-117, 1ST FLOOR SECTOR 7 FINISH PLAN

(9) Sheet I-118, 1ST FLOOR SECTOR 8 FINISH PLAN

(10) Sheet I-119, 1ST FLOOR SECTOR 9 FINISH PLAN - BASE BID

(11) Sheet I-119A, 1ST FLOOR SECTOR 9 FINISH PLAN - BID OPTION

(12) Sheet I-121, 2ND FLOOR SECTOR 1 FINISH PLAN

(13) Sheet I-122, 2ND FLOOR SECTOR 2 FINISH PLAN

(14) Sheet I-123, 2ND FLOOR SECTOR 3 FINISH PLAN

(15) Sheet I-124, 2ND FLOOR SECTOR 4 FINISH PLAN

(16) Sheet I-125, 2ND FLOOR SECTOR 5 FINISH PLAN

(17) Sheet I-126, 2ND FLOOR SECTOR 6 FINISH PLAN - BASE BID

(18) Sheet I-126A,2ND FLOOR SECTOR 6 FINISH PLAN - BID OPTION

(19) Sheet I-127, 2ND FLOOR SECTOR 7 FINISH PLAN

(20) Sheet I-128, 2ND FLOOR SECTOR 8 FINISH PLAN

(21) Sheet I-129, 2ND FLOOR SECTOR 9 FINISH PLAN - BASE BID

(22) Sheet I-129A, 2ND FLOOR SECTOR 9 FINISH PLAN - BID OPTION

(23) Sheet IN604, MATERIALS & FINISH LEGEND

CSOF PACKAGE – VOLUME 5 of 8 – FIRE PROTECTION, PLUMBING:

(1) Sheet P-601, PLUMBING SCHEDULES

CSOF PACKAGE – VOLUME 6 of 8 – PROCESS MECHANICAL:

(1) Sheet D-705, PIPING AND INSTRUMENTATION DIAGRAM - COOLING TOWER 01

(2) Sheet D-706, PIPING AND INSTRUMENTATION DIAGRAM - COOLING TOWER 02

(3) Sheet D-707, PIPING AND INSTRUMENTATION DIAGRAM - COOLING TOWER 03

(4) Sheet D-708, PIPING AND INSTRUMENTATION DIAGRAM - COOLING TOWER 04

(5) Sheet D-721, PIPING AND INSTRUMENTATION DIAGRAM - DOMESTIC COLD WATER

(6) Sheet DP303, PROCESS PIPING SECTIONS - CUP

(7) Sheet DP407, DOMESTIC COLD WATER AND MAKE-UP WATER PIPING PLAN - CUP

MECHANICAL ROOM A

Am #0010 - 4

(8) Sheet DP408, DOMESTIC COLD WATER AND MAKE-UP WATER PIPING PLAN - CUP

MECHANICAL ROOM B

(9) Sheet DP904, DOMESTIC COLD WATER AND MAKE-UP WATER PIPING ISOMETRIC

- CUP

(10) Sheet DQ401, PROCESS EQUIPMENT PLAN - CUP MECHANICAL ROOM A

(11) Sheet DQ402, PROCESS EQUIPMENT PLAN - CUP MECHANICAL ROOM B

(12) Sheet M-606, MECHANICAL - EQUIPMENT SCHEDULES - SHEET 6

(13) Sheet MH113, FIRST FLOOR HVAC PLAN - SECTOR 3

CSOF PACKAGE – VOLUME 7 of 8 – ELECTRICAL:

(1) Sheet EG111, GROUNDING PLAN LEVEL 1

(2) Sheet EG111A, GROUNDING PLAN LEVEL 1A

(3) Sheet EG121, GROUNDING PLAN LEVEL 2

(4) Sheet E-603, PANEL M1 ONE-LINE DIAGRAM

(5) Sheet E-606, CUP CABLE SCHEDULE

(6) Sheet E-670, CUP PANEL SCHEDULES

(7) Sheet E-671, CUP SWITCHBOARD SCHEDULES AND ELEVATIONS

(8) Sheet EP403, POWER PLAN LEVEL 1 CUP SECTOR 1

CSOF PACKAGE – VOLUME 8 of 8 – TELECOMMUNICATIONS, AUDIO VISUAL, SECURITY:

(1) Sheet TY101, LEGEND AND ABBREVIATIONS

(2) Sheet TY601, SECURITY ONE-LINES - SHEET 1

2. This amendment is a part of the proposing papers and its receipt shall be acknowledged. All other conditions and requirements of the request for proposal remain unchanged.

3. Electronic Proposals. Provide proposals via the instructions provided in Section 00 22 00 of the Request for Proposal.

4. Offers will be received until 2:00 p.m., local time at place of receiving proposals, 10 JUN 2021.

Attachments:

Specifications listed in 1.b., above Drawings listed in 1.c., above

U.S. Army Corps of Engineers, Omaha District 1616 Capitol Avenue Omaha, Nebraska 68102 4901

08 JUN 2021

nep/2160

Consolidated Space Operations Facility - Schriever AFB, CO SH50

SECTION TABLE OF CONTENTS

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

SECTION 23 64 26

CHILLED, CHILLED-HOT, AND CONDENSER WATER PIPING SYSTEMS

08/09

PART 1 GENERAL

1.1 REFERENCES

1.2 SYSTEM DESCRIPTION

1.3 SUSTAINABILITY REQUIREMENTS

1.4 SUBMITTALS

1.5 MODIFICATIONS TO REFERENCES

1.5.1 Definitions

1.5.2 Administrative Interpretations

1.6 SAFETY REQUIREMENTS

1.7 DELIVERY, STORAGE, AND HANDLING

1.8 PROJECT/SITE CONDITIONS

1.8.1 Verification of Dimensions

1.8.2 Drawings

1.8.3 Accessibility

PART 2 PRODUCTS

2.1 STANDARD COMMERCIAL PRODUCTS

2.2 STEEL PIPING

2.2.1 Pipe

2.2.2 Fittings and End Connections (Joints)

2.2.2.1 Threaded Connections

2.2.2.2 Flanged Connections

2.2.2.3 Welded Connections

2.2.2.4 Dielectric Waterways and Flanges

2.3 POLYPROPYLENE PIPING (CHILLED WATER APPLICATIONS ONLY)

2.3.1 Pipe

2.3.2 Fittings

2.4 POLYETHYLENE PIPING

2.4.1 Pipe

2.4.2 Fittings

2.5 COPPER TUBING

2.5.1 Tube

2.5.2 Fittings and End Connections (Solder and Flared Joints)

2.5.3 Solder

2.5.4 Brazing Filler Metal

2.6 VALVES

2.6.1 Gate Valve

2.6.2 Globe and Angle Valve

2.6.3 Check Valve

2.6.4 Butterfly Valve

2.6.5 Plug Valve

2.6.6 Ball Valve

2.6.7 Square Head Cocks

2.6.8 Calibrated Balancing Valves

SECTION 23 64 26 Page 1Am #0010

2.6.9 Automatic Flow Control Valves

2.6.10 Water Temperature Mixing Valve

2.6.11 Water Temperature Regulating Valves

2.6.12 Water Pressure Reducing Valve

2.6.13 Pressure Relief Valve

2.6.14 Combination Pressure and Temperature Relief Valves

2.6.15 Float Valve

2.6.16 Drain Valves

2.6.17 Air Venting Valves

2.6.18 Vacuum Relief Valves

2.7 PIPING ACCESSORIES

2.7.1 Strainer

2.7.2 Cyclonic Separator

2.7.3 Combination Strainer and Pump Suction Diffuser

2.7.4 Flexible Pipe Connectors

2.7.5 Pressure and Vacuum Gauges

2.7.6 Temperature Gauges

2.7.6.1 Stem Cased-Glass

2.7.6.2 Bimetallic Dial

2.7.6.3 Liquid-, Solid-, and Vapor-Filled Dial

2.7.6.4 Thermal Well

2.7.7 Pipe Hangers, Inserts, and Supports

2.7.8 Escutcheons

2.7.9 Expansion Joints

2.7.9.1 Slip-Tube Type

2.7.9.2 Flexible Ball Type

2.7.9.3 Bellows Type

2.8 WATER TO WATER PLATE AND FRAME HEAT EXCHANGER

2.9 EXPANSION TANKS

2.10 AIR SEPARATOR TANKS

2.11 ELECTRICAL WORK

2.12 PAINTING OF NEW EQUIPMENT

2.12.1 Factory Painting Systems

2.12.2 Shop Painting Systems for Metal Surfaces

2.13 FACTORY APPLIED INSULATION

2.14 NAMEPLATES

2.15 RELATED COMPONENTS/SERVICES

2.15.1 Drain and Make-Up Water Piping

2.15.2 Cathodic Protection

2.15.3 Field Applied Insulation

2.15.4 Field Painting

2.15.4.1 Color Coding

2.16 ELECTRICAL HEAT TRACING

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Welding

3.1.1.1 Employer's Record Documents (For Welding)

3.1.1.2 Welding Procedures and Qualifications

3.1.1.3 Examination of Piping Welds

3.1.1.4 Welding Safety

3.1.2 Directional Changes

3.1.3 Functional Requirements

3.1.4 Fittings and End Connections

3.1.4.1 Threaded Connections

3.1.4.2 Brazed Connections

3.1.4.3 Welded Connections

3.1.4.4 Flared Connections

SECTION 23 64 26 Page 2Am #0010

3.1.4.5 Flanges and Unions

3.1.5 Valves

3.1.6 Air Vents

3.1.7 Drains

3.1.8 Flexible Pipe Connectors

3.1.9 Temperature Gauges

3.1.10 Pipe Hangers, Inserts, and Supports

3.1.10.1 Hangers

3.1.10.2 Inserts

3.1.10.3 C-Clamps

3.1.10.4 Angle Attachments

3.1.10.5 Saddles and Shields

3.1.10.6 Horizontal Pipe Supports

3.1.10.7 Vertical Pipe Supports

3.1.10.8 Pipe Guides

3.1.10.9 Steel Slides

3.1.10.10 Multiple Pipe Runs

3.1.10.11 Structural Attachments

3.1.11 Pipe Alignment Guides

3.1.12 Pipe Anchors

3.1.13 Building Surface Penetrations

3.1.13.1 Refrigerated Space

3.1.13.2 General Service Areas

3.1.13.3 Waterproof Penetrations

3.1.13.4 Fire-Rated Penetrations

3.1.13.5 Escutcheons

3.1.14 Access Panels

3.2 INSTALLATION FOR POLYPROPYLENE PIPING (CHILLED WATER APPLICATIONS

ONLY)

3.2.1 Locations

3.2.2 Pipe Joints

3.2.3 Overheating Precautions

3.2.4 Testing and Flushing

3.3 ELECTRICAL INSTALLATION

3.4 HEAT TRACE CABLE INSTALLATION

3.5 HEAT TRACE CABLE TESTS

3.6 CLEANING AND ADJUSTING

3.7 FIELD TESTS

3.7.1 Equipment and Component Isolation

3.7.2 Pressure Tests

3.7.3 Related Field Inspections and Testing

3.7.3.1 Piping Welds

3.7.3.2 HVAC TAB

3.8 INSTRUCTION TO GOVERNMENT PERSONNEL

-- End of Section Table of Contents --

SECTION 23 64 26 Page 3Am #0010

SECTION 23 64 26

CHILLED, CHILLED-HOT, AND CONDENSER WATER PIPING SYSTEMS

08/09

PART 1 GENERAL

1.1 REFERENCES

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 NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI Z21.22/CSA 4.4 (2015) Relief Valves for Hot Water Supply Systems

AMERICAN SOCIETY OF SANITARY ENGINEERING (ASSE)

ASSE 1003 (2009) Performance Requirements for Water Pressure Reducing Valves for Domestic Water Distribution Systems - (ANSI approved 2010)

ASSE 1017 (2009) Performance Requirements for Temperature Actuated Mixing Valves for Hot Water Distribution Systems - (ANSI approved 2010)

AMERICAN WELDING SOCIETY (AWS)

AWS A5.8/A5.8M (2011; Amendment 2012) Specification for Filler Metals for Brazing and Braze Welding

AWS BRH (2007; 5th Ed) Brazing Handbook

AWS D1.1/D1.1M (2015; Errata 1 2015; Errata 2 2016) Structural Welding Code - Steel

AWS Z49.1 (2012) Safety in Welding and Cutting and Allied Processes

ASME INTERNATIONAL (ASME)

ASME B1.20.1 (2013) Pipe Threads, General Purpose (Inch)

ASME B16.1 (2015) Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250

ASME B16.11 (2016) Forged Fittings, Socket-Welding and Threaded

ASME B16.18 (2018) Cast Copper Alloy Solder Joint Pressure Fittings

ASME B16.21 (2016) Nonmetallic Flat Gaskets for Pipe

SECTION 23 64 26 Page 4Am #0010

Flanges

ASME B16.22 (2013) Standard for Wrought Copper and Copper Alloy Solder Joint Pressure Fittings

ASME B16.26 (2013) Standard for Cast Copper Alloy Fittings for Flared Copper Tubes

ASME B16.3 (2016) Malleable Iron Threaded Fittings, Classes 150 and 300

ASME B16.39 (2014) Standard for Malleable Iron Threaded Pipe Unions; Classes 150, 250, and 300

ASME B16.9 (2018) Factory-Made Wrought Buttwelding Fittings

ASME B31.9 (2017) Building Services Piping

ASME B40.100 (2013) Pressure Gauges and Gauge Attachments

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

ASTM INTERNATIONAL (ASTM)

ASTM A53/A53M (2018) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A653/A653M (2018) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM A733 (2016) Standard Specification for Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples

ASTM B117 (2016) Standard Practice for Operating Salt Spray (Fog) Apparatus

ASTM B32 (2008; R 2014) Standard Specification for Solder Metal

ASTM B42 (2015a) Standard Specification for Seamless Copper Pipe, Standard Sizes

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

ASTM B75/B75M (2011) Standard Specification for Seamless Copper Tube

ASTM B813 (2016) Standard Specification for Liquid and Paste Fluxes for Soldering of Copper

SECTION 23 64 26 Page 5Am #0010 and Copper Alloy Tube

ASTM B88 (2016) Standard Specification for Seamless Copper Water Tube

ASTM D2657 (2007; R 2015) Heat Fusion Joining Polyolefin Pipe and Fittings

ASTM D2683 (2014) Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing

ASTM D3035 (2015) Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter

ASTM D3261 (2016) Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing

ASTM D3308 (2012; R 2017) PStandard Specification for TFE Resin Skived Tape

ASTM D520 (2000; R 2011) Zinc Dust Pigment

ASTM D3350 (2012) Polyethylene Plastics Pipe and Fittings Materials

ASTM E84 (2018a) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM F714 (2013; R 2019) Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter

ASTM F1007 (2018) Standard Specification for Pipeline Expansion Joints of the Packed Slip Type for Marine Application

ASTM F1055 (2016a) Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX)Pipe and Tubing

ASTM F1120 (1987; R 2015) Standard Specification for Circular Metallic Bellows Type Expansion Joints for Piping Applications

ASTM F1199 (1988; R 2015) Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers (150 psig and 150 degrees F Maximum)

ASTM F2389 (2017a) Standard Specification for Pressure-rated Polypropylene (PP) Piping Systems

SECTION 23 64 26 Page 6Am #0010

EXPANSION JOINT MANUFACTURERS ASSOCIATION (EJMA)

EJMA Stds (2015) (10th Ed) EJMA Standards

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

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

MSS SP-25 (2013) Standard Marking System for Valves, Fittings, Flanges and Unions

MSS SP-58 (2009) Pipe Hangers and Supports - Materials, Design and Manufacture, Selection, Application, and Installation

MSS SP-67 (2017; Errata 1 2017) Butterfly Valves

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

MSS SP-71 (2011; Errata 2013) Gray Iron Swing Check Valves, Flanged and Threaded Ends

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

MSS SP-78 (2011) Cast Iron Plug Valves, Flanged and Threaded Ends

MSS SP-80 (2013) Bronze Gate, Globe, Angle and Check Valves

MSS SP-85 (2011) Gray Iron Globe & Angle Valves Flanged and Threaded Ends

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG 1 (2016 UPP 2016) Motors and Generators

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

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 90A (2018) Standard for the Installation of Air Conditioning and Ventilating Systems

NSF INTERNATIONAL (NSF)

NSF/ANSI 14 (2018) Plastics Piping System Components and Related Materials

1.2 SYSTEM DESCRIPTION

Provide the water systems having the minimum service (design)

SECTION 23 64 26 Page 7Am #0010 temperature-pressure rating indicated. Provision of the piping systems, including materials, installation, workmanship, fabrication, assembly, erection, examination, inspection, and testing shall be in accordance with the required and advisory provisions of ASME B31.9 except as modified or supplemented by this specification section or design drawings. This specification section covers the water systems piping which is located within, on, and adjacent to building(s) within the building(s) 5 foot line.

1.3 SUSTAINABILITY REQUIREMENTS

Materials in this technical specification may contribute towards contract compliance with sustainability requirements. See Section 01 33 29 SUSTAINABILITY REPORTING for project requirements.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-03 Product Data

Calibrated Balancing Valves; G

Automatic Flow Control Valves; G

Water Temperature Mixing Valve; G

Water Temperature Regulating Valves; G

Water Pressure Reducing Valve

Pressure Relief Valve

Combination Pressure and Temperature Relief Valves

Expansion Joints; G

Water to Water Plate and Frame Heat Exchanger; G

Combination Strainer and Pump Suction Diffuser

Expansion Tanks

Air Separator Tanks

SD-06 Test Reports

Piping Welds NDE Report

Pressure Tests Reports; G

Report shall be provided in bound 8-1/2 by 11 inch booklets. In the reports, document all phases of the tests performed. Include initial test summaries, all repairs/adjustments made, and the final test results.

SD-07 Certificates

SECTION 23 64 26 Page 8Am #0010

Employer's Record Documents (For Welding)

Welding Procedures and Qualifications

Certificates shall be submitted for the following items showing conformance with the referenced standards contained in this section.

SD-08 Manufacturer's Instructions

Lesson plan for the Instruction Course; G

SD-10 Operation and Maintenance Data

Submit spare parts data for each different item of equipment specified. Include a complete list of parts and supplies, with current unit prices and source of supply, a recommended spare parts list for 1 year of operation, and a list of the parts recommended by the manufacturer to be replaced on a routine basis.

Submit a list of qualified permanent service organizations with operation and maintenance data packages. Include service organization addresses and service area or expertise. The service organizations shall be reasonably convenient to the equipment installation and be able to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

Calibrated Balancing Valves; G

Automatic Flow Control Valves; G

Water Temperature Mixing Valve; G

Water Temperature Regulating Valves; G

Water Pressure Reducing Valve; G

Pressure Relief Valve; G

Combination Pressure and Temperature Relief Valves; G

Expansion Joints; G

Combination Strainer and Pump Suction Diffuser; G

Expansion Tanks; G

Air Separator Tanks; G

1.5 MODIFICATIONS TO 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.

SECTION 23 64 26 Page 9Am #0010

1.5.1 Definitions

For the International Code Council (ICC) Codes referenced in the contract documents, advisory provisions shall be considered mandatory, the word "should" shall be interpreted as "shall." Reference to the "code official" shall be interpreted to mean the "Contracting Officer." For Navy owned property, references to the "owner" shall be interpreted to mean the "Contracting Officer." For leased facilities, references to the "owner" shall be interpreted to mean the "lessor." References to the "permit holder" shall be interpreted to mean the "Contractor."

1.5.2 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, shall be applied appropriately by the Contracting Officer as authorized by his administrative cognizance and the FAR.

1.6 SAFETY REQUIREMENTS

Exposed moving parts, parts that produce high operating temperature, parts which may be electrically energized, and parts that may be a hazard to operating personnel shall be insulated, fully enclosed, guarded, or fitted with other types of safety devices. Safety devices shall be installed so that proper operation of equipment is not impaired.

1.7 DELIVERY, STORAGE, AND HANDLING

Protect stored items from the weather, humidity and temperature variations, dirt and dust, or other contaminants. Proper protection and care of all material both before and during installation shall be the Contractor's responsibility. Any materials found to be damaged shall be replaced at the Contractor's expense. During installation, cap piping and similar openings to keep out dirt and other foreign matter. Any porous materials found to be contaminated with mold or mildew will be replaced at the Contractor's expense. Non-porous materials found to be contaminated with mold or mildew will be disinfected and cleaned prior to installation.

1.8 PROJECT/SITE CONDITIONS

1.8.1 Verification of Dimensions

The Contractor shall become familiar with all details of the work, verify all dimensions in the field, and advise the Contracting Officer of any discrepancy before performing any work.

1.8.2 Drawings

Because of the small scale of the drawings, it is not possible to indicate all offsets, fittings, and accessories that may be required. The Contractor shall carefully investigate the plumbing, fire protection, electrical, structural and finish conditions that would affect the work to be performed and shall arrange such work accordingly, furnishing required offsets, fittings, and accessories to meet such conditions.

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1.8.3 Accessibility

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 STANDARD COMMERCIAL PRODUCTS

Materials and equipment shall be standard products of a manufacturer regularly engaged in the manufacturing of such products, which are of a similar material, design and workmanship. The standard products shall have been in satisfactory commercial or industrial use for 2 years prior to bid opening.

The two year use shall include applications of equipment and materials under similar circumstances and of similar size. The 2 years experience shall be satisfactorily completed by a product which has been sold or is offered for sale on the commercial market through advertisements, manufacturer's catalogs, or brochures.

Products having less than a 2 year field service record shall be acceptable if a certified record of satisfactory field operation, for not less than 6000 hours exclusive of the manufacturer's factory tests, can be shown. System components shall be environmentally suitable for the indicated locations.

The equipment items shall be supported by service organizations. These service organizations shall be 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.

2.2 STEEL PIPING

Water piping shall be steel pipe or copper tubing. Provide steel piping with a ANSI/ASME Class 125 service rating, which for 150 degrees F, the pressure rating is 175 psig.

2.2.1 Pipe

Steel pipe, conform to ASTM A53/A53M, Schedule 40, Type E or S, Grades A or B. Do not use Type F pipe.

2.2.2 Fittings and End Connections (Joints)

Piping and fittings 1 inch and smaller shall have threaded connections.

Piping and fittings larger than 1 inch and smaller than 3 inches shall have either threaded, or welded connections. Piping and fittings 3 inches and larger shall have welded, or flanged connections. The manufacturer of each fitting shall be permanently identified on the body of the fitting in accordance with MSS SP-25.

2.2.2.1 Threaded Connections

Use threaded valves and pipe connections conforming to ASME B1.20.1. Used threaded fitting conforming to ASME B16.3. Use threaded unions conforming to ASME B16.39. Use threaded pipe nipples conforming to ASTM A733.

SECTION 23 64 26 Page 11Am #0010

2.2.2.2 Flanged Connections

Flanges shall conform to ASME B16.1, Class 125. Gaskets shall be nonasbestos compressed material in accordance with ASME B16.21, 1/16 inch thickness, full face or self-centering flat ring type. These gaskets shall contain aramid fibers bonded with styrene butadeine rubber (SBR) or nitrile butadeine rubber (NBR). Bolts, nuts, and bolt patterns shall conform to ASME B16.1.

2.2.2.3 Welded Connections

Welded valves and pipe connections (both butt-welds and socket-welds types) shall conform to ASME B31.9. Butt-welded fittings shall conform to ASME B16.9. Socket-welded fittings shall conform to ASME B16.11. Welded fittings shall be identified with the appropriate grade and marking symbol.

2.2.2.4 Dielectric Waterways and Flanges

Provide dielectric waterways with a water impervious insulation barrier capable of limiting galvanic current to 1 percent of short circuit current in a corresponding bimetallic joint. When dry, insulation barrier shall be able to withstand a 600-volt breakdown test. Provide dielectric waterways constructed of galvanized steel and have threaded end connections to match connecting piping. Dielectric waterways shall be suitable for the required operating pressures and temperatures. Provide dielectric flanges with the same pressure ratings as standard flanges and provide complete electrical isolation between connecting pipe and/or equipment as described herein for dielectric waterways.

2.3 POLYPROPYLENE PIPING (CHILLED WATER APPLICATIONS ONLY)

2.3.1 Pipe

Polypropylene pipe shall be Schedule 40, copolymer, and shall meet ASTM F2389 and NSF/ANSI 14.

2.3.2 Fittings

Fittings shall meet ASTM F2389 and NSF/ANSI 14 and shall be NSF listed for the service intended. Plastic pipe, fittings, and solvent cement shall bear the NSF seal "NSF-PW."

Polypropylene fittings shall conform to dimensional requirements of Schedule 40. Polypropylene piping that will be exposed to UV light shall be provided with a Factory applied UV resistant coating.

2.4 POLYETHYLENE PIPING

2.4.1 Pipe

Polyethylene piping shall meet PE4710 material, ASTM D3350 445574 C/E cell class, IPS 1/2 inch to 3 inch ASTM D3035 DR 11, and IPS 4 inch to 36 inch

ASTM F714 DR 11.

2.4.2 Fittings

Fittings shall be rated for internal pressure service at least equal to the full service pressure rating of the mating pipe. Fitting material and

SECTION 23 64 26 Page 12Am #0010 cell class shall match pipe material and cell class. Fittings shall meet ASTM D2683 for Socket, ASTM D3261 for Butt, ASTM F1055 for Electrofusion, and ASTM F2880 for Flange Adaptors.

Socket or Butt Fusion in accordance with ASTM D2657 and manufacturer's standard. Flanged connections to equipment and valves.

2.5 COPPER TUBING

Provide copper tubing and fittings with a ANSI/ASME Class 125 service rating, which for 150 degrees F., the pressure rating is 175 psig.

2.5.1 Tube

Use copper tube conforming to ASTM B88, Type L or M for aboveground tubing, and Type K for buried tubing.

2.5.2 Fittings and End Connections (Solder and Flared Joints)

Wrought copper and bronze solder joint pressure fittings, including unions ands flanges, shall conform to ASME B16.22 and ASTM B75/B75M. Provide adapters as required. Cast copper alloy solder-joint pressure fittings , including unions and flanges, shall conform to ASME B16.18. Cast copper alloy fittings for flared copper tube shall conform to ASME B16.26 and ASTM B62. ASTM B42 copper pipe nipples with threaded end connections shall conform to ASTM B42.

Copper tubing of sizes larger than 4 inches shall have brazed joints.

Brass or bronze adapters for brazed tubing may be used for connecting tubing to flanges and to threaded ends of valves and equipment.

Extracted brazed tee joints may be used if produced with an acceptable tool and installed in accordance with tool manufacturer's written procedures.

2.5.3 Solder

Provide solder in conformance with ASTM B32, grade Sb5, tin-antimony alloy. Solder flux shall be liquid or paste form, non-corrosive and conform to ASTM B813.

2.5.4 Brazing Filler Metal

Filler metal shall conform to AWS A5.8/A5.8M, Type BAg-5 with AWS Type 3 flux, except Type BCuP-5 or BCuP-6 may be used for brazing copper-to-copper joints.

2.6 VALVES

Provide valves with a ANSI/ASME Class 125 service rating, which for 150 degrees F, the pressure rating is 175 psig.

2.6.1 Gate Valve

Gate valves 2-1/2 inches and smaller shall conform to MSS SP-80 Class 125 and shall be bronze with wedge disc, rising stem and threaded, soldered, or flanged ends. Gate valves 3 inches and larger shall conform to MSS SP-70, Class 125, cast iron with bronze trim, outside screw and yoke, and flanged or threaded ends.

SECTION 23 64 26 Page 13Am #0010

2.6.2 Globe and Angle Valve

Globe and angle valves 2-1/2 inches and smaller shall conform to MSS SP-80, Class 125. Globe and angle valves 3 inches and larger shall conform to MSS SP-85, Class 125.

2.6.3 Check Valve

Check valves 2-1/2 inches and smaller shall conform to MSS SP-80. Check valves 3 inches and larger shall conform to MSS SP-71, Class 125.

2.6.4 Butterfly Valve

Butterfly valves shall conform to MSS SP-67, Type 1 and shall be lug type. Valves smaller than 8 inches shall have throttling handles with a minimum of seven locking positions. Valves 8 inches and larger shall have totally enclosed manual gear operators with adjustable balance return stops and position indicators.

2.6.5 Plug Valve

Plug valves 2 inches and larger shall conform to MSS SP-78, have flanged or threaded ends, and have cast iron bodies with bronze trim. Valves 2 inches and smaller shall be bronze with NPT connections for black steel pipe and brazed connections for copper tubing. Valve shall be lubricated, non-lubricated, or tetrafluoroethylene resin-coated type. Valve shall be resilient, double seated, trunnion mounted with tapered lift plug capable of 2-way shutoff. Valve shall operate from fully open to fully closed by rotation of the handwheel to lift and turn the plug. Valves 8 inches or larger shall be provided with manual gear operators with position indicators.

2.6.6 Ball Valve

Full port design. Ball valves 1/2 inch and larger shall conform to MSS SP-72 or MSS SP-110 and shall be cast iron or bronze with threaded, soldered, or flanged ends. Valves 8 inches or larger shall be provided with manual gear operators with position indicators. Ball valves may be provided in lieu of gate valves.

2.6.7 Square Head Cocks

Provide copper alloy or cast-iron body with copper alloy plugs, suitable for 125 psig water working pressure.

2.6.8 Calibrated Balancing Valves

Copper alloy or cast iron body, copper alloy or stainless internal working parts. Provide valve calibrated so that flow can be determined when the temperature and pressure differential across valve is known. Valve shall have an integral pointer which registers the degree of valve opening.

Valve shall function as a service valve when in fully closed position.

Valve shall be constructed with internal seals to prevent leakage and shall be supplied with preformed insulation.

Provide valve bodies with tapped openings and pipe extensions with positive shutoff valves outside of pipe insulation. The pipe extensions shall be provided with quick connecting hose fittings for a portable

SECTION 23 64 26 Page 14Am #0010 differential pressure meter connections to verify the pressure differential. Provide metal tag on each valve showing the gallons per minute flow for each differential pressure reading.

2.6.9 Automatic Flow Control Valves

Valve shall automatically maintain the constant flow indicated on the design drawings. Valve shall modulate by sensing the pressure differential across the valve body. Valve shall be selected for the flow required and provided with a permanent nameplate or tag carrying a permanent record of the factory-determined flow rate and flow control pressure levels. Provide valve that controls the flow within 5 percent of the tag rating. Valve materials shall be the same as specified for the ball or plug valves.

Provide valve that are electric type as indicated. Valve shall be capable of positive shutoff against the system pump head, valve bodies shall be provided with tapped openings and pipe extensions with shutoff valves outside of pipe insulation. The pipe extensions shall be provided with quick connecting hose fittings and differential meter, suitable for the operating pressure specified. Provide the meter complete with hoses, vent, integral metering connections, and carrying case as recommended by the valve manufacturer.

2.6.10 Water Temperature Mixing Valve

Valve, ASSE 1017 for water service.

2.6.11 Water Temperature Regulating Valves

Provide copper alloy body, direct acting, pilot operated, for the intended service.

2.6.12 Water Pressure Reducing Valve

Valve, ASSE 1003 for water service, copper alloy body.

2.6.13 Pressure Relief Valve

Valve shall prevent excessive pressure in the piping system when the piping system reaches its maximum heat buildup. Valve, ANSI Z21.22/CSA 4.4 and shall have cast iron bodies with corrosion resistant internal working parts. The discharge pipe from the relief valve shall be the size of the valve outlet unless otherwise indicated.

2.6.14 Combination Pressure and Temperature Relief Valves

ANSI Z21.22/CSA 4.4, copper alloy body, automatic re-seating, test lever, and discharge capacity based on AGA temperature steam rating.

2.6.15 Float Valve

Angle patternor or Globe pattern. Valve bodies 3 inches nominal pipe size and smaller shall be bronze. Valve bodies larger than 3 inches shall be cast iron or bronze. Steel parts shall be corrosion resistant. Where float rods are extended for tank applications, extension shall be properly supported and guided to avoid bending of float rod or stressing of valve pilot linkage.

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2.6.16 Drain Valves

Valves, MSS SP-80 gate valves. Valve shall be manually-operated, 3/4 inch pipe size and above with a threaded end connection. Provide valve with a water hose nipple adapter. Freeze-proof type valves shall be provided in installations exposed to freezing temperatures.

2.6.17 Air Venting Valves

Manually-operated general service type air venting valves, brass or bronze valves that are furnished with threaded plugs or caps. Automatic type air venting shall be the ball-float type with brass/bronze or brass bodies, 300 series corrosion-resistant steel float, linkage and removable seat.

Air venting valves on water coils shall have not less than 1/8 inch threaded end connections. Air venting valves on water mains shall have not less than 3/4 inch threaded end connections. Air venting valves on all other applications shall have not less than 1/2 inch threaded end connections.

2.6.18 Vacuum Relief Valves

ANSI Z21.22/CSA 4.4

2.7 PIPING ACCESSORIES

2.7.1 Strainer

Strainer, ASTM F1199, except as modified and supplemented in this specification. Strainer shall be the cleanable, basket or "Y" type, the same size as the pipeline. Strainer bodies shall be fabricated of cast iron with bottoms drilled, and tapped. Provide blowoff outlet with pipe nipple, gate valve, and discharge pipe nipple. The bodies shall have arrows clearly cast on the sides indicating the direction of flow.

Provide strainer with removable cover and sediment screen. The screen shall be made of minimum 22 gauge brass sheet, monel, corrosion-resistant steel, with small perforations numbering not less than 400 per square inch to provide a net free area through the basket of at least 3.30 times that of the entering pipe. The flow shall be into the screen and out through the perforations.

2.7.2 Cyclonic Separator

Metal- bodied, with removal capability of removing solids 45 microns/325 mesh in size and heavier than 1.20 specific gravity, maximum pressure drop of 5 psid, with cleanout connection.

2.7.3 Combination Strainer and Pump Suction Diffuser

Angle type body with removable strainer basket and internal straightening vanes, a suction pipe support, and a blowdown outlet and plug. Strainer shall be in accordance with ASTM F1199, except as modified and supplemented by this specification. Unit body shall have arrows clearly cast on the sides indicating the direction of flow.

Strainer screen shall be made of minimum 22 gauge brass sheet, monel, corrosion-resistant steel, with small perforations numbering not less than 400 per square inch to provide a net free area through the basket of at least 3.30 times that of the entering pipe. Flow shall be into the screen

SECTION 23 64 26 Page 16Am #0010 and out through the perforations. Provide an auxiliary disposable fine mesh strainer which shall be removed 30 days after start-up. Provide warning tag for operator indicating scheduled date for removal.

Casing shall have connection sizes to match pump suction and pipe sizes, and be provided with adjustable support foot or support foot boss to relieve piping strains at pump suction. Provide unit casing with blowdown port and plug. Provide a magnetic insert to remove debris from system.

2.7.4 Flexible Pipe Connectors

Provide flexible bronze or stainless steel piping connectors with single braid. Equip flanged assemblies with limit bolts to restrict maximum travel to the manufacturer's standard limits. Unless otherwise indicated, the length of the flexible connectors shall be as recommended by the manufacturer for the service intended. Internal sleeves or liners, compatible with circulating medium, shall be provided when recommended by the manufacturer. Provide covers to protect the bellows where indicated.

2.7.5 Pressure and Vacuum Gauges

Gauges, ASME B40.100 with throttling type needle valve or a pulsation dampener and shut-off valve. Provide gauges with 4.5 inch dial, brass or aluminum case, bronze tube, and siphon. Gauge shall have a range from 0 psig to approximately 1.5 times the maximum system working pressure. Each gauge range shall be selected so that at normal operating pressure, the needle is within the middle-third of the range.

2.7.6 Temperature Gauges

Temperature gauges, shall be the industrial duty type and be provided for the required temperature range. Provide gauges with fixed thread connection, dial face gasketed within the case; and an accuracy within 2 percent of scale range. Gauges shall have Fahrenheit scale in 2 degree graduations scale (black numbers) on a white face. The pointer shall be adjustable. Rigid stem type temperature gauges shall be provided in thermal wells located within 5 feet of the finished floor. Universal adjustable angle type or remote element type temperature gauges shall be provided in thermal wells located 5 to 7 feet above the finished floor or in locations indicated. Remote element type temperature gauges shall be provided in thermal wells located 7 feet above the finished floor or in locations indicated.

2.7.6.1 Stem Cased-Glass

Stem cased-glass case shall be polished stainless steel or cast aluminum, 9 inches long, with clear acrylic lens, and non-mercury filled glass tube with indicating-fluid column.

2.7.6.2 Bimetallic Dial

Bimetallic dial type case shall be not less than 3-1/2 inches, stainless steel, and shall be hermetically sealed with clear acrylic lens.

Bimetallic element shall be silicone dampened and unit fitted with external calibrator adjustment.

2.7.6.3 Liquid-, Solid-, and Vapor-Filled Dial

Liquid-, solid-, and vapor-filled dial type cases shall be not less than

SECTION 23 64 26 Page 17Am #0010

3-1/2 inches, stainless steel or cast aluminum with clear acrylic lens.

Fill shall be nonmercury, suitable for encountered cross-ambients, and connecting capillary tubing shall be double-braided bronze.

2.7.6.4 Thermal Well

Thermal well shall be identical size, 1/2 or 3/4 inch NPT connection, brass or stainless steel. Where test wells are indicated, provide captive plug-fitted type 1/2 inch NPT connection suitable for use with either engraved stem or standard separable socket thermometer or thermostat.

Mercury shall not be used in thermometers. Extended neck thermal wells shall be of sufficient length to clear insulation thickness by 1 inch.

2.7.7 Pipe Hangers, Inserts, and Supports

Pipe hangers, inserts, guides, and supports: to MSS SP-58.

2.7.8 Escutcheons

Provide one piece or split hinge metal plates for piping entering floors, walls, and ceilings in exposed spaces. Secure plates in place by internal spring tension or set screws. Provide polished stainless steel plates or chromium-plated finish on copper alloy plates in finished spaces. Provide paint finish on metal plates in unfinished spaces.

2.7.9 Expansion Joints

2.7.9.1 Slip-Tube Type

Slip-tube expansion joints, ASTM F1007, Class I or II. Joints shall be provided with internally-externally alignment guides, injected semi-plastic packing, and service outlets. End connections shall be flanged or beveled for welding as indicated. Initial settings shall be made in accordance with the manufacturer's recommendations to compensate for ambient temperature at time of installation. Pipe alignment guides shall be installed as recommended by the joint manufacturer.

2.7.9.2 Flexible Ball Type

Flexible ball expansion joints shall be capable of 360 degrees rotation plus 15 degrees angular flex movement. Joints shall be constructed of carbon steel with the exterior spherical surface of carbon steel balls plated with a minimum 5 mils of hard chrome in accordance with EJMA Stds.

Joint end connections shall be threaded for piping 2 inches or smaller.

Joint end connections larger than 2 inches shall be grooved, flanged, or beveled for welding. Provide joint with pressure-molded composition gaskets suitable for continuous operation at twice design temperature.

2.7.9.3 Bellows Type

Bellows expansion type joints, ASTM F1120 with Type 304 stainless steel corrugated bellows, reinforced with equalizing rings, internal sleeves, and external protective covers. Joint end connections shall be grooved, flanged, or beveled for welding. Guiding of piping on both sides of expansion joint shall be in accordance with the published recommendations of the manufacturer of the expansion joint.

SECTION 23 64 26 Page 18Am #0010

2.8 WATER TO WATER PLATE AND FRAME HEAT EXCHANGER

Plates, frame and gaskets must be designed for operating pressure, temperatures, capacities and fluids. Condenser water, chilled water, and pressure relief valve connections must be located in accordance with manufacturer's standard practice. Connections larger than 3 inches must be ASME 150 pound flanged. Water pressure drop through clean plates and headers must not exceed 10 psi at the flow rates and temperatures indicated. The heat exchanger construction must consist of a frame, plate pack, fixed head, moveable follower, carrying bar, guiding bar, support column and tightening bolts. Construct plates of cold formed Type 316 stainless steel, and designed to assure turbulent flow. Gaskets must be single piece molded design of Nitrile Rubber (NBR), EPDM or Viton.

Arrange the plates and gaskets to ensure that the fluids do not intermix and any leaks are to the outside of the heat exchanger.

2.9 EXPANSION TANKS

Tank shall be welded steel, constructed for, and tested to pressure-temperature rating of 125 psi at 150 degrees F. Provide tanks precharged to the minimum operating pressure. Tank shall have a replaceable polypropylene or butyl lined diaphragm which keeps the air charge separated from the water; shall be the captive air type.

Tanks shall accommodate expanded water of the system generated within the normal operating temperature range, limiting this pressure increase at all components in the system to the maximum allowable pressure at those components. Each tank air chamber shall be fitted with a drain, fill, an air charging valve, and system connections. Tank shall be supported by steel legs or bases for vertical installation or steel saddles for horizontal installations. The only air in the system shall be the permanent sealed-in air cushion contained within the expansion tank.

2.10 AIR SEPARATOR TANKS

External air separation tank shall have an internal design constructed of stainless steel and suitable for creating the required vortex and subsequent air separation. Tank shall be steel, constructed for, and tested to pressure-temperature rating of 125 psi at 150 degrees F. Tank shall have tangential inlets and outlets connections, threaded for 2 inches and smaller and flanged for sizes 2-1/2 inches and larger. Air released from a tank shall be vented as indicated. Tank shall be provided with a blow-down connection.

2.11 ELECTRICAL WORK

Provide motors, controllers, integral disconnects, contactors, and controls with their respective pieces of equipment, except controllers indicated as part of motor control centers. Provide electrical equipment, including motors and wiring, as specified in Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM. Manual or automatic control and protective or signal devices required for the operation specified and control wiring required for controls and devices specified, but not shown, shall be provided. For packaged equipment, the manufacturer shall provide controllers including the required monitors and timed restart.

Provide high efficiency type, single-phase, fractional-horsepower alternating-current motors, including motors that are part of a system, in accordance with NEMA MG 11.

SECTION 23 64 26 Page 19Am #0010

Provide polyphase, squirrel-cage medium induction motors, including motors that are part of a system, that meet the efficiency ratings for premium efficiency motors in accordance with NEMA MG 1. Provide motors in accordance with NEMA MG 1 and of sufficient size to drive the load at the specified capacity without exceeding the nameplate rating of the motor.

Motors shall be rated for continuous duty with the enclosure specified.

Motor duty requirements shall allow for maximum frequency start-stop operation and minimum encountered interval between start and stop. Motor torque shall be capable of accelerating the connected load within 20 seconds with 80 percent of the rated voltage maintained at motor terminals during one starting period. Provide motor starters complete with thermal overload protection and other necessary appurtenances. Motor bearings shall be fitted with grease supply fittings and grease relief to outside of the enclosure.

Where two-speed or…