W912DW-17-R-0011_Amendment_0005.pdf

W68MD963150131

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

Albeni Falls Pow erhouse Station Service Sw itchgear

Please see Continuation Page for details.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY 29-Mar-2017

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912DW-17-R-0011

X 9B. DATED (SEE ITEM 11)

24-Feb-2017

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

Offer 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 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram 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 telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

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

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, 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)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

29-Mar-2017

CODE

USA ENGINEER DISTRICT, SEATTLE

ATTN: CECT-NWS

4735 EAST MARGINAL WAY SOUTH, BLDG. 1202

SEATTLE WA 98134-2388

W912DW 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DW-17-R-0011

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

The purpose of Amendment five (0005) is as follows:

Incorporate below items as indicated.

1. Specifications/Drawings – revised/new specification(s) and drawing(s) are as follows:

01 11 10.00 26, Summary of Work 26 23 10.00 26, 480 Volt Switchgear

The attached revised section(s) are to be replaced in their entirety. Specifications changes are generally identified, for convenience, either by strikeout for deletions, and double underlining of text for additions or a single dark line in the margin. All portions of the revised sections shall apply whether or not changes have been indicated.

2. Proposal Submittal Proposal submittal date/time remains the same: 4 April 2017 at 12:30:00 p.m. LOCAL TIME.

NOTICE TO OFFERORS: Offerors must acknowledge receipt of this amendment by number and date on offer.

Encl:

01 11 10.00 26 (revised) 26 23 10.00 26 (revised)

(End of Summary of Changes)

Albeni Falls Powerhouse 13.8 kV and 480 V Switchgear Replacement 15020 Oldtown, ID

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 11 10.00 26

SUMMARY OF WORK

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

1.2 CHANGES IN SPECIFICATIONS AND DRAWINGS

1.3 DEFINITIONS

PART 2 - PRODUCTS - NOT USED

PART 3 - PRODUCTS - NOT USED

-- End of Section Table of Contents --

SECTION 01 11 10.00 26 Page 1

W912DW-17-R-0011 R0005

SECTION 01 11 10.00 26

SUMMARY OF WORK

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

This section covers the technical specifications to perform all work required to furnish, install, test, commission, and place in service the Albeni Falls Powerhouse 15 kV and 480 V Station Service Switchgear Replacement. This section is a general summary of the required work and is not all-inclusive. The work described within these specifications includes, but not necessarily limited to the following:

a. Remove and dispose of three (3) 15 kV rated switchgear lineups including related feeders and control systems located on EL 2060.

b. Remove and dispose of one (1) double-ended 480 V switchgear, SQ1,located on EL 2042 consisting of two (2) 750 kVA 13.8 kV-480 V dry type transformers and seven (7) vertical breaker sections, including the control systems, incoming 15kV feeders.

c. Remove and dispose of abandoned rotating excitation equipment consisting of three (3) Amplidyne Sets, three (3) Rheostat Cubicles, and three (3) Amplidyne Cubicles, and abandoned rotating excitation equipment cables. Cut and plug abandoned conduits.

d. Furnish, install, and test three (3) new 15 kV switchgear lineups SJ1, SJ2, and SJ3 on EL 2060 complete with vacuum circuit breakers; XJ1, XJ2, XJ3, XJO1, and XJO2, new surge protective equipment, 15 kV bus duct modifications, new conduits and feeders to TO1 and TO2, controls, annunciation, and protection circuits.

e. Furnish, install, and test one (1) 480 V double ended substation (SQ1) consisting of two (2) main bus breakers, two (2) tie breakers, and eleven fourteen ( 1114) feeder breakers on each bus, complete with relays, meters, and wiring on EL 2042.

g. Furnish, install, and test two (2) three-phase, 1000 kVA, Delta/Wye 13,800/480 V dry-type transformers, two (2) high-resistance grounding systems, and associated surge arresters and surge capacitors on EL 2042.

h. Furnish, install, and test one (1) local-remote control panel SQ1C for control of supply breakers, tie/isolation breakers, and all feeder breakers.

i. Furnish, install, and test three (3) new high-resistance grounding (HRG) units in SJ1, SJ2, and SJ3.

j. Furnish, install, and test one (1) new high-resistance grounding (HRG) unit for the exisisting Diesel generator system.

k. Modify and test four (4) sections of main control switchboard (SC)

SECTION 01 11 10.00 26 Page 2 panels 1 through 4 located in the control room on EL 2060 to include the removal and installation of new associated controls and indication for 15 kV circuit breaker, 480 V station service switchgear, and mimic bus modifications.

l. Furnish, install, and test new feeder cables to fifth floor offices from SQ1 and new manual transfer switch.

m. Furnish services of manufacturer's erecting engineer and system commissioning.

n. Furnish spare parts and accessories, training of Government Personnel, O & M Manuals, and as-built drawings.

p. Furnish concrete cutting and sawcutting for equipment foundations.

p. Perform work required to comply with site operations, environmental protection, and safety and health provisions.

1.2 CHANGES IN SPECIFICATIONS AND DRAWINGS

The Government reserves the right to revise or amend the specifications and/or drawings prior to the due date set for receipt of proposals.

Copies of such amendments will be furnished to all prospective offerors.

If the revisions and amendments require material changes in quantities or prices, or both, the due date set for receipt of proposals may be extended to enable offerors the opportunity to revise their proposals. The amendment will include an announcement of the new due date for receipt of proposals.

1.3 DEFINITIONS

a. Wherever in the specifications, or upon the drawings, the words "directed", "required", "ordered", "designated", "prescribed", or words of like import are used, it shall be understood that the "direction", "requirement", "order", "designation", or "prescription" of the Contracting Officer is intended, and similarly the words "approved", "acceptable", "satisfactory", or words of like import shall mean "approved by" or "acceptable to" or "satisfactory to" the Contracting Officer unless otherwise expressly stated.

b. Where "as shown", "as indicated", "as detailed", or words of like import are used, it shall be understood that the reference is made to the drawings accompanying this contract unless stated otherwise. The word "provided" as used herein shall be understood to mean "provided complete in place", that is, "furnished and installed". (FAR 52.236.21(b) and (c)).

c. Wherever in these specifications or upon the drawings, the words "Contracting Officer" (CO) or "Contracting Officer's Representative" (COR) are used, it shall be understood to also mean "Government" unless otherwise expressly stated.

d. Wherever in these specifications the word "weekend(s)" is used, it shall be understood to mean "Saturday, Sunday, and Federal Holidays", unless otherwise expressly stated.

e. Whenever in these specifications the word "Project" is used, it shall be understood to mean Albeni Falls Powerhouse.

SECTION 01 11 10.00 26 Page 3

PART 2 - PRODUCTS - NOT USED

PART 3 - PRODUCTS - NOT USED

-- End of Section --

SECTION 01 11 10.00 26 Page 4

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 23 10.00 26

480 VOLT SWITCHGEAR

PART 1 GENERAL

1.1 GENERAL

1.2 REFERENCES

1.3 SUBMITTALS

1.4 GENERAL REQUIREMENTS

1.4.1 General

1.4.2 Delivery, Storage, and Handling

1.4.3 Qualifications

1.5 MATERIALS, EQUIPMENT AND INSTALLATION

1.5.1 Standard Products

1.5.2 Corrosion Prevention

1.5.2.1 General

1.5.2.2 Fastenings and Fittings

1.5.2.3 Corrosion-Resisting Materials

1.5.2.4 Corrosion-Resisting Treatments

1.5.2.5 Finish

1.5.3 Storage and Handling

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 General

2.1.2 Device Arrangement

2.1.3 Connections

2.2 480 VOLT SWITCHGEAR

2.2.1 Assembly And Detail Drawings

2.2.2 Outline Drawings

2.2.3 Schematic Diagrams And Connection Diagrams

2.2.4 Enclosure And Framework

2.2.5 Buses And Connections

2.2.6 Circuit Breakers

2.2.6.1 General

2.2.6.2 Bus Supply and Bus Tie Circuit Breakers

2.2.6.3 Diesel Generator Breakers

2.2.6.4 Feeder Air Circuit Breakers

2.2.6.5 Safety Shutters

2.2.6.6 Automatic Bus Transfer

2.2.7 Wiring

2.2.8 Terminals And Installation

2.2.9 Terminal Blocks

2.2.10 Equipment Grounding

2.2.11 Molded-Case Circuit Breakers

2.2.12 Nameplates

2.2.13 Foundations

2.2.14 Remote Racking Device

2.2.15 Remote Control Device

2.3 CONTROL SWITCHES

SECTION 26 23 10.00 26 Page 1

2.3.1 General

2.3.2 Switch Features

2.4 INDICATING METERS

2.4.1 Ammeters

2.4.2 Voltmeters

2.4.3 Wattmeters

2.5 INDICATING LAMP ASSEMBLIES

2.6 ESCUTCHEONS

2.7 INSTRUMENT TRANSFORMERS

2.7.1 General

2.7.2 Voltage Transformers

2.7.3 Current Transformers

2.7.3.1 General

2.7.3.2 Window or Bushing Type Current Transformers

2.7.3.3 Wound and Bar Type Current Transformers

2.7.3.4 Rating

2.7.3.5 Burden Analysis

2.8 PAINTING

2.9 ACCESSORIES

2.10 SPARE PARTS

PART 3 EXECUTION

3.1 EQUIPMENT INSTALLATION

3.2 FACTORY INSPECTION AND TESTS

3.2.1 General

3.2.2 Breaker Assembly Tests

3.2.2.1 Assembled Equipment

3.2.2.2 Wiring

3.2.2.3 Breaker Assembly

3.2.2.4 Circuit Breaker

3.3 FIELD INSPECTION, TESTING AND COMMISSIONING

3.3.1 General

3.3.2 Low Voltage Breakers

3.3.3 Commissioning

3.4 PAINTING

3.5 QUALIFICATIONS OF FIELD ENGINEERING SERVICE PERSONNEL

3.6 CONTRACTOR FURNISHED TRAINING OF GOVERNMENT PERSONNEL

-- End of Section Table of Contents --

SECTION 26 23 10.00 26 Page 2

SECTION 26 23 10.00 26

480 VOLT SWITCHGEAR

PART 1 GENERAL

1.1 GENERAL

These specifications include the design, fabrication, assembly, wiring, testing, and delivery of the 480 volt switchgear for the SQ01 Switchgear including integration with the equipment specified in SECTIONS

26 23 15.00 26 , 480 VOLT HIGH RESISTANCE GROUNDING (HRG) SYSTEM,

33 72 33.14 26 POWER SYSTEM RELAY PROTECTION AND METERING, and

26 12 16.00 26 DRY-TYPE TRANSFORMERS.

1.2 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 C12.1 (2008) Code for Electricity Metering

ANSI C39.1 (1981; R 1992) Requirements for Electrical Analog Indicating Instruments

ASME INTERNATIONAL (ASME)

ASME B1.1 (2003; R 2008) Unified Inch Screw Threads (UN and UNR Thread Form)

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

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2013) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM B187/B187M (2011) Standard Specification for Copper, Bus Bar, Rod and Shapes and General Purpose Rod, Bar and Shapes

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 1248 (1998; R 2007) Commissioning of Electrical Systems in Hydroelectric Power Plants

SECTION 26 23 10.00 26 Page 3

IEEE C2 (2012; Errata 2012; INT 1-4 2012; INT 5-7 2013) National Electrical Safety Code

IEEE C37.13 (2008; INT 1 2009; AMD 1 2012) Standard for Low-Voltage AC Power Circuit Breakers Used in Enclosures

IEEE C37.16 (2009) Standard for Preferred Ratings, Related Requirements, and Application Recommendations for Low-Voltage AC (635 V and below) and DC 3200 V and below) Power Circuit Breakers

IEEE C37.17 (2012) Standard for Trip Devices for AC and General-Purpose DC Low-Voltage Power Circuit Breakers

IEEE C57.13 (2008; INT 2009) Standard Requirements for Instrument Transformers

IEEE C37.20.1 (2002; INT 1 2005; AMD A 2005; AMD B 2006;

R 2007) Standard for Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear

IEEE C57.13.3 (2006) Grounding of Instrument Transformer Secondary Circuits and Cases

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 62271-200 (2011) AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up To and Including 52 kV

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA C37.50 (2012) American National Standard for Switchgear--Low-Voltage AC Power Circuit Breakers Used in Enclosures - Test Procedures

NEMA SG 4 (2009) Alternating-Current High-Voltage Circuit Breaker

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 44 (2010) Thermoset-Insulated Wires and Cables

UL 489 (2009; Reprint Jun 2013) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

SECTION 26 23 10.00 26 Page 4

UL 1581 (2001; Reprint Oct 2009) Electrical Wires, Cables, and Flexible Cords

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2008; Errata 1-2010; Changes 1-3 2010;

Changes 4-6 2011; Change 7 2012) Safety and Health Requirements Manual

1.3 SUBMITTALS

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

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Work Plan ; G, HDC

Automatic Bus Transfer Scheme ; G, HDC

Contractor Furnished Training of Government Personnel ; G, HDC

SD-02 Shop Drawings

Outline drawings ; G, HDC

Assembly and Detail Drawings ; G, HDC

Foundations ; G, HDC

Schematic Diagrams and Connection Diagrams ; G, HDC

SD-03 Product Data

Submit within 60 days after receipt of notice to proceed:

Infra-Red (IR) Viewing Windows ; G, HDC

Circuit Breakers ; G, HDC

Wiring ; G, HDC

Terminal Blocks ; G, HDC

Molded-Case Circuit Breakers ; G, HDC

Nameplates ; G, HDC

Remote Racking Device ; G, HDC

Remote Control Device ; G, HDC

Control Switches ; G, HDC

Indicating Meters ; G, HDC

SECTION 26 23 10.00 26 Page 5

Indicating Lamp Assemblies ; G, HDC

Escutcheons ; G, HDC

Instrument Transformers ; G, HDC

Paint ; I, HDC

Submit within 90 days after receipt of notice to proceed:

Relay Curves for Instrument Transformers ; G, HDC

Accessories and Spare Parts List ; G, HDC

SD-06 Test Reports

Submit within 75 days after receipt of notice to proceed:

Design Test Reports ; G, HDC

Submit no later than 30 days prior to tests:

Factory Test Procedure ; G, HDC

Field Test Procedure ; G, HDC

Submit no later than 30 days after completion of tests:

Factory Inspection and Test Reports ; G, HDC

Submit no later than 10 days after completion of tests:

Field Test Reports ; G, HDC

SD-07 Certificates

Submit within 90 days after receipt of notice to proceed:

Certifications of Switchgear and Breakers ; G, HDC

SD-10 Operation and Maintenance Data

480 Volt Switchgear Information , Data Package 4; G, HDC

Submit in accordance with Section 01 78 23.00 27 OPERATION AND MAINTENANCE DATA and Section 01 78 00 CLOSEOUT SUBMITTALS.

SD-11 Closeout Submittals

Submit within 60 days after completion of work:

Shop Drawings ; G, HDC

a. Circuit Breaker Manufacturer's Installation Drawings and Details.

b. Circuit Breaker Controls and Schematic Diagrams.

SECTION 26 23 10.00 26 Page 6

1.4 GENERAL REQUIREMENTS

1.4.1 General

a. The Contractor is required to accomplish all coordination between manufacturers, new switchgear, and existing switchgear, in order to provide assurance to the Government that critical requirements are met.

b. The Contractor shall submit a complete package of 480 Volt Switchgear information , to include, but not limited to, complete manufacturer's data sheets, installation and trouble shooting manuals, parts listings, and equipment descriptions for all equipment installed under this Contract.

1.4.2 Delivery, Storage, and Handling

a. The Contractor shall provide written notification to the Government 14 calendar days prior to shipment of equipment.

b. The switchgear shall be shipped as completely assembled and wired as feasible. The switchgear and any other equipment shall be wrapped suitably or otherwise protected from damage during shipment. All electrical material delivered to site, shall until immediately prior to installation, be protected from damaging environmental and construction activities. The equipment shall be kept dry and free from precipitation and condensation during storage, installation, and after installation. All electrical equipment shall be stored in completely enclosed containers and in a humidity-controlled environment. Method of on-site storage and storage containers will be subject to approval by the Contracting Officer.

1.4.3 Qualifications

Each manufacturer shall have a minimum of five years experience with the production of equipment of the same type and rating.

1.5 MATERIALS, EQUIPMENT AND INSTALLATION

New materials and equipment shall be furnished and any defective material or equipment damaged in the course of installation shall be replaced or repaired. Testing shall be performed to check the installation of and the proper operational functions of the electrical equipment. The installations shall be in accordance with the National Electrical Code, NFPA 70 , and the National Electrical Safety Code, IEEE C2 , except where otherwise specifically shown or specified, in which case the drawings and specifications shall govern. Omission of details on the drawings or in the specifications shall not be construed as permitting deviations from Code requirements.

1.5.1 Standard Products

Material and equipment shall be the standard products of manufacturers regularly engaged in the manufacture of these products and shall essentially duplicate items that have been in satisfactory use for at least two years prior to proposal due date.

SECTION 26 23 10.00 26 Page 7

1.5.2 Corrosion Prevention

1.5.2.1 General

All equipment shall be protected to prevent deterioration from corrosion.

The general requirements are specified below; however, other corrosion-resisting treatments that are the equivalent of those specified may be used.

1.5.2.2 Fastenings and Fittings

Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous fastening and fittings shall be of corrosion-resistant material or shall be treated in an approved manner to render them resistant to corrosion.

All fastenings which are to be exposed directly to the weather shall be of corrosion-resisting material.

1.5.2.3 Corrosion-Resisting Materials

Corrosion-resisting steel, copper, brass, bronze, copper-nickel-copper alloys are acceptable corrosion-resisting materials.

1.5.2.4 Corrosion-Resisting Treatments

Treatments shall be in accordance with ASTM A123/A123M or ASTM A153/A153M .

1.5.2.5 Finish

Final painting shall be done in accordance with paragraph PAINTING.

1.5.3 Storage and Handling

Materials and equipment shall be suitably protected from dampness, dust, and physical damage.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 General

a. The equipment furnished and the work performed under this Contract shall be in conformance with the applicable provisions of ANSI & IEEE standards. The Contractor shall furnish documentation substantiating that the circuit breaker design and assembly are ANSI certified using Manufacturer's data and catalog cuts to demonstrate fully that all parts of the equipment shall conform to the requirements and intent of the specifications.

b. All materials, components, and equipment shall conform to the requirements of these specifications. Materials, components, and equipment shall be free from defects and imperfections, of recent manufacture, and shall have mechanical and electrical properties suitable for the intended use. All materials, components, and equipment not manufactured by the Contractor shall be products of other recognized reputable manufacturers meeting the requirements of subparagraph Qualifications. Insofar as practicable, devices and equipment used for the same or similar services shall be of the same make and type, and shall be interchangeable when of the same rating.

SECTION 26 23 10.00 26 Page 8

2.1.2 Device Arrangement

Power cables in conduit will enter the switchgear from the top and bottom as shown on the Contract drawings. The preferred arrangement of the switchgear is indicated on the Contract drawings and shall be such that existing embedded feeders may enter the appropriate cabinets. Bottoms shall be open to the maximum extend practicable to allow for variations in cable entry from existing embedded conduits. Any proposed deviation from this arrangement shall be submitted to the Contracting Officer for approval. The design of the switchgear and arrangement of devices shall be such that adequate space is provided for inspection and maintenance of wiring, terminals, and devices. Equipment on the rear of the panels shall be so mounted that the studs of the equipment mounted on the front of the panels will be accessible without removing any device.

2.1.3 Connections

All bolts, studs, machine screws, nuts, and tapped holes shall be in accordance with ASME B1.1 . Threads for sizes 1/4-inch to 1-inch , inclusive, shall be NC or UNC series. The sizes and threads of all valves, pipe and fittings, conduit and fittings, tubing and fittings, and connecting equipment shall be in accordance with ASME B1.20.1 .

Manufacturer's standard thread and construction may be used on small items which are integrally replaceable, except that threads for external connections to these items shall meet the above requirements.

2.2 480 VOLT SWITCHGEAR

Except as otherwise specified or indicated, the design, construction, and tests of the switchgear shall conform to the applicable requirements of UL 489 , IEEE C37.13 , and IEEE C37.20.1 . The switchgear shall be of the totally-enclosed, free-standing, dead-front type, built on a framework of structural steel. The framework and structure shall be sufficiently rigid to withstand operation of the equipment or any stresses due to short circuits. Each switchgear assembly shall contain two main bus sections connected by a bus tie circuit breaker. Each main bus section shall be connected to a supply transformer through a main supply circuit breaker.

The two main supply circuit breakers and the bus tie circuit breaker shall be electrically operated. Automatic bus transfer shall be provided as specified in subparagraph Automatic Bus Transfer. The switchgear shall have instruments, control accessories, and other equipment mounted on the front panels and inside the switchgear as shown and as specified. Remote racking and control provisions shall be provided for the breaker cubicles.

2.2.1 Assembly And Detail Drawings

Prepare and submit assembly and detailed drawings and data to demonstrate that all parts of the equipment will conform to the requirements and intent of the specifications. Submit within 75 days after receipt of notice to proceed. The drawings and data shall include sectional views of switchgear units, description of removable elements, all relays and other devices, equipment lists, and nameplate schedules.

2.2.2 Outline Drawings

Prepare and submit outline drawings for coordination of equipment and physical location. Submit within 75 days after receipt of notice to proceed. Drawings shall include the overall dimensions and weights of the

SECTION 26 23 10.00 26 Page 9 equipment; the size and location of conduit and cable entrances; details of provisions for bolting equipment to the floor, walls, and ceilings; the equipment crate sizes and proposed routing to the installation site within the facility.

2.2.3 Schematic Diagrams And Connection Diagrams

Schematic diagrams shall show the one line diagrams of the switchgear assembly, complete assembly full line connection diagram, and control logic showing that the equipment will function in a way to meet the requirements and intent of the specifications. All controls and external connections indicated by the Contract drawings shall be accounted for.

Point to point connection or wiring diagrams shall show all terminal blocks and connections between the blocks and switchgear equipment, and shall provide a space at least three (3) inches below and adjacent to the terminal blocks in which external circuits, conduits or connections may be shown. The wiring diagrams shall be made as seen by an observer of the actual wiring, and space shall be provided for the addition of devices where mounting space exists on the structure. Drawings shall also show the proposed arrangement of terminal blocks and supports for incoming cables. Additional information on outgoing circuits will be provided by the Government when the drawings are received for approval, and shall be added to the drawings by the Contractor. Submit diagrams within 120 days after receipt of notice to proceed.

2.2.4 Enclosure And Framework

a. Enclosure shall be made of selected smooth sheet steel panels, suitably supported. Doors and panels used to support instruments and other devices and barriers between compartments shall not be less than No. 11 MSG. Exposed panels on the front and ends of the enclosure shall be bent angle or channel edges with all corner seams welded and ground smooth, or shall be the manufacturer's equivalent construction as approved. The front outside surfaces shall not be drilled or welded for the purpose of attaching wires or mounting devices if such holes or fastenings will be visible from the front.

b. Infra-red (IR) viewing windows shall be provided on the rear of the switchgear enclosures, minimum one window for each main bus breaker lug connection and each bus tie circuit breaker lug connection, to allow IR sensing of each breaker in the closed position under load conditions without having to open the enclosure. Windows shall feature a removable steel or aluminum security cover over a 4-inch crystal sightglass. Windows shall also be provided for each feeder breaker, unless the switchgear manufacturer can show that such installation is impractical due to the design of the bus-breaker connections. Windows shall be on the front or rear of the enclosure as recommended by the manufacturer for optimum viewing. The IR windows shall be the switchgear manufacturer's standard product, or a third-party product that is UL certified and arc-flash tested to the kA rating of the breakers or higher, meeting the applicable requirements of IEC 62271-200 , and installed with the coordination and approval of the switchgear manufacturer and installed at the manufacturer's facility.

2.2.5 Buses And Connections

Copper bars and shapes for main bus and ground bus conductors shall conform to the requirements of ASTM B187/B187M . All primary connections

SECTION 26 23 10.00 26 Page 10 including the power connections to the line side of the circuit breakers shall be by bus bar. The main bus segments shall have a continuous current-carrying capacity of 2,000 amperes and the feeder bus segments shall have a continuous current-carrying capacity of 2,000 amperes conforming to IEEE C37.20.1 . The buses shall have mechanical and thermal capacities coordinated with the interrupting rating of the power supply circuit breakers. Bus bars shall be of hard-drawn copper. Shop splices and tap connections shall be brazed, pressure-welded or bolted. All splices for field assembly shall be bolted. Where bolted connections are used, contact surfaces shall be silver- or tin-plated. The buses shall be mounted on insulating supports of wet process porcelain, glass polyester, or approved suitable molded material. All primary connections including the power connections to the line side of the circuit breakers shall be by bus bar.

2.2.6 Circuit Breakers

2.2.6.1 General

a. Each drawout type circuit breaker shall completely enclosed in a metal compartment and shall have safety shutters. Access to the circuit breakers shall be provided through hinged steel doors. Access to instrument and relay wiring, instrument transformers and fuses, shall also be through hinged doors. All hinged doors shall have bent angle or channel edges, invisible hinges and suitable latches or fastenings. Access to the switchgear bus compartments shall be through removable bolted panels, cover plates or hinged doors.

b. The bus supply, bus tie, and feeder air circuit breakers shall be 3-pole, dead-front, drawout type rated 600 volts AC, conforming to the requirements of IEEE C37.16 and IEEE C37.17 . All circuit breakers of the same frame size and type of operation shall be interchangeable.

Breakers shall be a narrow design, each section not to exceed eighteen

(18) inches in width. Suitable means shall be provided for removing and handling the drawout circuit breakers. These means may include support from the top of the switchgear enclosure without interference with incoming or outgoing wiring. Overcurrent trip alarm contacts, with means for manual reset, shall be furnished as indicated. Covers shall be provided over readily accessible energized portions to prevent hazards to personnel when withdrawing or inserting the breakers.

2.2.6.2 Bus Supply and Bus Tie Circuit Breakers

a. The two power supply circuit breakers and the bus tie circuit breakers shall be electrically-operated drawout type with the closing mechanism designed for operation on 125 volts DC. The circuit breakers shall be rated 1,600 amperes frame size, 42,000 amperes symmetrical interrupting capacity at 600 volts AC, with continuous current ratings as indicated. Each circuit breaker shall be provided with functional components in accordance with Table 1 of IEEE C37.13 , including means for manual emergency tripping and manual closing for maintenance operation. Each bus supply and bus tie breaker shall be equipped with a manually-reset bell alarm contact to energize an annunciator circuit only when the breaker is automatically tripped on a fault or overload.

b. Each bus supply breaker and the bus tie circuit breaker shall be provided with protective relaying as per 33 72 33.14 26 POWER SYSTEM

SECTION 26 23 10.00 26 Page 11

RELAY PROTECTION AND METERING.

c. The two power supply circuit breakers and the bus tie circuit breaker shall be electrically interlocked so that only two of the three breakers can be in the closed position at the same time. A local test control switch shall be provided for each electrically-operated circuit breaker. The breaker shall be electrically interlocked through cell switches or secondary disconnects to prevent breaker operation except when the breaker is in the test position. Sufficient breaker auxiliary switch contacts and cell switches shall be provided to accomplish the required breaker control and interlocking system as shown. At least four auxiliary switch contacts shall be provided on each breaker. At least two spare auxiliary switch contacts, one normally-open and one normally-closed, shall also be provided on each electrically-operated breaker.

d. In addition to the above requirements, a second bus tie breaker with instantaneous trip only shall be provided in series with the electrically-operated bus tie breaker for manual isolation of the electrically-operated bus tie breaker. The two tie breakers shall be separated by physical space as shown on the contract drawings.

2.2.6.3 Diesel Generator Breakers

a. Each bus of SQ1 can alternatively be supplied by an emergency diesel generator. These breakers shall conform to paragraph Feeder Air Circuit Breakers and be electrically operated. A local test control switch shall be provided for each electrically-operated circuit breaker. The breaker shall be electrically interlocked through cell switches or secondary disconnects to prevent breaker operation except when the breaker is in the test position. Sufficient breaker auxiliary switch contacts and cell switches shall be provided to accomplish the required breaker control and interlocking system as shown in the contract drawingsincluding both diesel generator breakers, both main breakers, and the tie breaker..

2.2.6.4 Feeder Air Circuit Breakers

a. Feeder breakers shall be independent electrically-operated drawout type with the closing mechanism designed for operation on 125 volts DC, with frame sizes as indicated on teh contract drawings, and shall be rated 600 volts AC. Circuit breakers with 800-ampere frames shall have a short-circuit interrupting capacity of not less than 42,000 rms symmetrical amperes at 600 volts AC.

b. Each feeder breaker, except as specified otherwise, shall be provided with protective relaying as per 33 72 33.14 26 POWER SYSTEM RELAY PROTECTION AND METERING. Each feeder breaker shall be equipped with a manually-reset bell alarm contact to energize an annunciator circuit only when the breaker is automatically tripped on a fault or overload.

2.2.6.5 Safety Shutters

Each breaker shall have positive acting safety shutters that isolate the breaker connections to the main bus when the breaker is withdrawn from the cell.

SECTION 26 23 10.00 26 Page 12

2.2.6.6 Automatic Bus Transfer

The 480 volt switchgear SQ1 shall be configured with an automatic bus transfer scheme. The breakers shall have sufficient auxiliary contacts to allow the bus transfer scheme to function. The automatic transfer shall use a programble relay to implement automatic transfer scheme and be provided as per 33 72 33.14 26 POWER SYSTEM RELAY PROTECTION AND METERING. Contractor shall submit for approval, within 90 days after receipt of notice to proceed, the programing for the automatic bus transfer scheme . The automatic transfer arrangement shall be as shown and shall incorporate the following functions:

a. Normal operating configuration shall be with both supply breakers closed and the bus tie breaker open.

b. Loss of voltage on one bus shall cause the associated supply breaker to trip and the bus tie breaker to close.

c. Automatic transfer control shall cease to function if either of the supply breakers or the bus tie breaker trip on overcurrent.

d. Recovery of voltage from one of the two normal sources shall (after a time delay) open the bus tie breaker and close the associated supply breaker.

e. After pickup by the voltage relays, the bus transfer operation shall be accomplished within approximately 1 second.

2.2.7 Wiring

In addition to the requirements for Special Wire and Cable in Section 26 05 19.00 26 , INSULATED WIRE AND CABLE, switchgear wiring shall meet the following requirements:

a. All control wire, including wire for removable elements, shall be stranded copper switchboard wire with 600 volt insulation, type SIS as listed in NFPA 70 . The wire shall comply with the requirements of UL 44 and shall pass the VW-1 flame test of UL 1581 . Hinge wire shall have Class K stranding. Current transformer secondary leads shall be not smaller than No. 10 AWG. Minimum wire size for all other control wiring shall be No. 12 AWG.

b. A suitable wiring duct system shall be installed for all interpanel wiring and shall provide easy access for inspection and replacement of wiring. All wiring shall be installed in wiring channels and ducts as far as possible. Each wire shall be properly protected where it leaves a channel or duct.

c. Wiring, where not installed in channels or ducts, shall be formed into compact wire bundles suitably bound together and properly supported. Bindings and supports shall not cause damage or cold flow of the insulation. Groups of exposed wires shall be run straight horizontally or vertically with short-radius right-angle bends.

Wiring supports shall be of heavy-gage rustproof material or steel with rust-resisting finish equivalent to sherardizing or cadmium-zinc plating. There shall be no splices in the wiring and all connections shall be made at terminal studs or terminal blocks with ring-tongue indented terminals. All screw terminals shall have toothed lockwashers and all stud terminals shall have contact nuts and either

SECTION 26 23 10.00 26 Page 13 locking nuts or lockwashers. Each conductor shall be identified at each end with a permanently machine-embossed black identification on white plastic tubular shrink-on marker and as shown on the connection diagram terminal blocks.

d. Any control wiring within the bus section compartments shall be completely shielded in a protective metal enclosure. Interpanel terminal blocks shall be used for interconnecting the wiring between adjacent panels at shipping splits. Hinge wire shall be used between stationary panels and swinging panels or swinging doors and shall be formed in vertical wire loops which shall provide rotation around the longitudinal axis of the conductors. Instrument transformer secondary circuits where required shall be grounded at the switchgear. All leads from each individual instrument transformer shall be brought out to terminal blocks.

e. All current transformer secondary leads shall be routed through metal conduits separately from all other wiring, to short-circuiting terminal blocks in the control cabinet or in a separate cabinet.

Current transformer terminal blocks shall be isolated by barriers from operating mechanism and control circuits if they are in the control cabinet. Grounding shall comply with IEEE C57.13.3 .

f. Terminal blocks and internal wiring shall be provided to all breaker spare auxiliary contacts and control device spare contacts for the connection of remote circuits. Terminal blocks shall be provided to terminate all external cables and shall contain at least 10 percent spare terminals. Suitable provisions shall be made for training and supporting incoming cables from the point of entrance to their termination on terminal blocks. All terminal blocks shall be accessible from the front of the switchgear unit with the front door open and the circuit breaker in the operate position. Drawings showing the proposed arrangement of terminal blocks and supports for incoming cables shall be submitted for approval.

g. Special attention shall be given to wiring and terminal arrangement to permit the individual conductors of an external cable to be conveniently grouped for connection to adjacent terminal points.

Suitable entrance locations shall be indicated on the Contractor's shop drawings for entrance of all external control cables.

h. The wire or terminal point designations used on the Contractor's wiring diagrams and printed on terminal block marking strips may be according to the Contractor's standard practice; however, additional wire and cable designations for identification of remote or external circuits shall be required, and drawings submitted for approval will be so marked and returned to the Contractor for additional designations. Drawings may require revision of external circuit connections, terminal and wire designations and wire grouping when submitted for approval.

2.2.8 Terminals And Installation

a. Control wiring within the assembly housings shall be furnished and installed by the Contractor. All new control wiring leaving equipment shall be run to and terminated on terminal blocks. Terminal blocks and internal wiring shall be provided as required for connection of existing remote circuits to all spare auxiliary and alarm contacts, remote annunciators, remote control switches, and pilot devices and

SECTION 26 23 10.00 26 Page 14 remote indicating lights where such devices are specified or existing and applicable to the equipment involved. There shall be no splices in the wiring and all connections shall be made at terminal blocks.

Terminal blocks shall be added for wiring to existing devices having leads instead of terminals. Indented terminals, Burndy Type YAV10 or an approved equal, shall be used on all wires terminated on screw terminals. All screw terminals shall have toothed lock washers and all stud terminals shall have contact nuts and either locking nuts or lock washers.

b. All external control cables and power cables shall enter the switchgear as shown on the drawings.

2.2.9 Terminal Blocks

Terminal blocks shall conform to the requirements of Section 26 00 00.00 26

GENERAL ELECTRICAL WORK AND EQUIPMENT.

2.2.10 Equipment Grounding

In addition to the requirements of Section 26 05 26.00 26 GROUNDING, the switchgear assembly shall have a full-length interior ground bus bar to which the housing, framework, cable supports, bus supports, and non-current carrying metallic parts of all equipment and conduits is grounded to insofar as practicable. The operating mechanism of the drawout units shall be permanently grounded, ground contacts shall be provided to automatically connect the movable element to the ground buses. These connections shall make before the main disconnecting devices upon insertion, and break after the main disconnecting devices upon withdrawal. Grounding shall conform to IEEE C37.20.1 except that the ground conductor shall have a continuous current-carrying capacity not less than 25 percent of the continuous rating of the circuit breakers.

2.2.11 Molded-Case Circuit Breakers

Molded case circuit breakers for control power sources shall conform to the applicable paragraphs in Section 26 00 00.00 26 GENERAL ELECTRICAL

WORK AND EQUIPMENT

2.2.12 Nameplates

Each item of equipment mounted on the switchgear which does not have a suitable designation included as an integral part of the device shall be provided with an engraved nameplate or with other approved suitable means of identification. Nameplates shall be as per Section 26 00 00.00 26

GENERAL ELECTRICAL WORK.

2.2.13 Foundations

Existing foundations may be reused or modified as recommended by the switchgear manufacturer to accommodate the replacement equipment.

Existing foundations not being reused shall be removed flush with the powerhouse floor and repaired as per Section 03 60 00.00 26 , CONCRETE DEMOLITION AND REPAIR, prior to installing the switchgear manufacturer's recommended foundation. Anchorage shall be as per Section 13 48 00.00 26 SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT. All foundations shall be suitable for the dynamic switching forces of the circuit breaker and the specified seismic forces. Prepare and submit foundation drawings within 75 days after receipt of notice to proceed.

SECTION 26 23 10.00 26 Page 15

2.2.14 Remote Racking Device

Remote racking device shall be a portable unit that may be positioned in front of any bus or feeder breaker in the switchgear to rack the breaker in or out remotely. The device shall include a wheeled assembly with brakes, a power module capable of exerting up to 10 pounds of positive pressure and 100 foot-pounds of torque in the braked position to rack the breakers in and out with 15 inches of horizontal traverse, status indicator lights on the assembly visible from all directions, vertical height adjustment, and a control pendant with a minimum 25-foot cord.

Power supply for the racking device shall be 120 volts AC, 15 amps. The remote racking device shall be the switchgear manufacturer's standard system designed for racking the breakers provided. If the switchgear manufacturer does not offer such a remote racking device, a different manufactured system may be provided if certified to rack the breakers provided with the switchgear.

2.2.15 Remote Control Device

Remote control device shall be a portable unit that connect to the exterior of the breaker enclosure to allow remote operation of the breaker (open/close). The remote control device shall be a pendant with a minimum 25-foot cord. The plug shall have a circular connector socket, cord strain relief, and threaded coupling .

2.3 CONTROL SWITCHES

2.3.1 General

All control switches shall be of the rotary switchboard type with handles on the front and the operating contact mechanisms on the rear of the panels. Each switch shall be provided with ample contact stages to perform the functions of the control system. Contacts shall be self-aligning and shall operate with a wiping action. A positive means of maintaining high pressure on closed contacts shall be provided.

Compression springs or pivotal joints shall not carry current. The covers or plates on the switches shall be readily removable for inspection of contacts. All control switches shall be suitable for operation on 600-volt AC or 250-volt DC circuits. All such switches shall be capable of satisfactorily withstanding a life test of at least 10,000 operations with rated current flowing in the switch contacts. The switches shall be capable of continuously carrying 20 amperes without exceeding a temperature rise of 30 degrees C. The single-break inductive load interrupting rating of switches shall be not less than 1.5 amperes for 125 volts DC or 10 amperes for 115 volts AC. All control switches shall have lockout provisions.Switches shall be located within its associated breaker's cubical unless there is insufficient room. In cases where there is insufficient room, control switches shall be located in dedicated metering or control compartments that do not contain a breaker.

2.3.2 Switch Features

a. Control and instrument switches shall be suitable for the intended use and shall have the features shown on the schematic diagrams and switch development drawings. The switches shall have modern handles or keys of pistol grip, oval, round notched or knurled type, and shall be black color unless otherwise specified.

SECTION 26 23 10.00 26 Page 16

b. Control switches for electrically-operated circuit breakers shall be 3-position momentary-contact type with spring return to neutral position, and shall have modern-black, heavy duty pistol grip handles.

Circuit breaker control switches shall have mechanical operation indicators to show the last manual operation of the switches, and shall have slip contacts when so indicated or required.

2.4 INDICATING METERS

Electrical indicating instrument relays shall comply with the applicable portions of ANSI C12.1 and ANSI C39.1 . Unless otherwise indicated, electrical indicating instruments shall be of the semi-flush, back-connected, dustproof, direct-reading, switchboard type, approximately

108.0 mm square, (4-1/4 inches square,) with white dials, analog-style scale arcs of approximately 250 degrees, and digital readout, such as a Weschler circular bargraph series BG-241 or equal that has a 101 segment 285° circular LED bar array display with 1% full scale resolution, with AC RMS input sensitivities per ANSI C39.1 of 1mA - 5A for current, 50mV - 250V for voltage with Accuracy 0.1% of full scale 1 count to match devices in use at the Powerhouse. The accuracy of each instrument shall be within 1 percent of full scale. Indicators shall be provided with zero adjustments readily accessible from instrument fronts without disassembly. Each instrument shall be accurately calibrated for use with the associated instrument transformers, and shall have the indicated scale or a scale suitable for the application, where a specific scale is not indicated.

Except for ammeters and voltmeters or unless otherwise specified or approved, the nominal or full-load values shall appear at the approximate mid-point, or the 12 o'clock position, of the scales.

2.4.1 Ammeters

Ammeters shall be calibrated to indicate full-load current when supplied with a current of 5 amperes. Full-load current shall be indicated by the pointer at approximately 75 percent of the full-scale range.

2.4.2 Voltmeters

Voltmeters shall be provided with expanded scales and calibrated to indicate the nominal phase-to-phase voltages at approximately mid-scale.

2.4.3 Wattmeters

Wattmeters shall indicate accumulated watthours received, total three-phase power.

2.5 INDICATING LAMP ASSEMBLIES

Indicating lamp assemblies shall be of the switchboard type, insulated for 125-volt dc service, with appropriate colored caps and integrally mounted resistors for 125-volt service.