W912BV18R0022_Amendment_0001.pdf

SUMMARY OF CHANGES (SPECIFICATIONS)

AMENDMENT 0001

RFP NO. W912BV18R0022

INSTALL TRANSFORMER, BUS, AND SWITCHGEAR

LAKE TEXOMA, TEXAS

Standard Form (SF) 30, Block 14 (continuation):

The proposal documents shall be revised as follows:

SPECIFICATIONS

Delete previously issued Section 01 11 00.00 40 and Attachments and replace with new Section 01 11 00.00 40 and Attachments attached hereto. Paragraphs that contain revisions are highlighted by bold text.

(END OF SUMMARY OF CHANGES – AMENDMENT 0001)

Denison Install Transformer, Bus, and Switchgear FY18 DENISONTRNINST18

SECTION 01 11 00.00 40

SUMMARY OF WORK

PART 1 GENERAL

1.1 SUMMARY OF WORK

The work to be performed under this contract consists of providing the labor, equipment, and materials to remove the existing single phase GSU transformers, the 15 kV switchgear for units 1 and 2, the iso-phase bus between the generator and the transformers, make connections to the new three phase gas insulated transformers, install new segregated phase bus, install new non-segregated phase bus, install new 15 kV switchgear, provide new controls and relaying, furnishing new control room switchboard panels, furnish and install new motor control centers, and all the necessary auxiliary and ancillary equipment and systems required necessary to install the equipment at the Denison Powerhouse to make it fully operational. The new GSU power transformers are to be furnished by others with the external connections to be made under this contract as summarized below and as required in specifications and drawings.

The work includes electrical work and related work including, but not limited to, the following:

a. Remove and dispose of seven (7) single phase GSU transformers (2 three phase transformer banks and 1 spare) including oil, piping, cabling and conduit, equipment no longer to be used and the disconnection from the overhead transmission line. Equipment to be disposed includes spare transformer bushings, one (1) high voltage, two

(2) neutral, and two (2) low voltage.

b. Remove and dispose of the two 15 kV switchgear lineups (unit 1 and unit 2) including the cable and conduit no longer to be used.

c. Remove and dispose of the existing iso-phase bus for units 1 and 2 to include the sections from the generator to the switchgear and from the switchgear to the six GSU transformers.

d. Remove insulating oil from the existing "clean" and "dirty" insulating oil storage tanks and clean the tanks.

e. Remove the existing oil filled transformer nitrogen piping, fire suppression deluge piping, oil piping systems, and their support structures.

f. Design, manufacturer, test and deliver FOB Denison Powerhouse two new switchgear assemblies with all breakers and auxiliary equipment.

g. Design, manufacturer, test and deliver FOB Denison new segregated bus for connection between the generator main leads and the new 15 kV switchgear and non-segregated bus for connection of the new switchgear to the new GSU transformers.

h. Connect the power and control cables and conduits to the new Gas Insulated Transformers T1 and T2 on Denison Powerhouse tailrace deck

SECTION 01 11 00.00 40 Page 1 Section Reissued by Amd 0001

(transformers are to be furnished and placed in location by others).

Connect the cable from the new high voltage transformer bushings to the overhead transmission lines.

i. Modify the existing transformer pedestal. Design and install new transformer foundation to allow the transformer supplier to place the transformers in the final location. After the transformer is placed in its final location, weld and provide touchup paint.

i. Remove existing surge arresters and brackets and provide and install new mounting brackets and new surge arresters on the high voltage side of the new transformers.

j. Install, level, and test new 15 kV switchgear for units 1 (SJ1) and 2 (SJ2) including all cable and conduit connections to make the equipment fully operational both locally and remotely as well as connection of the 15 kV cable connections to the existing excitation system transformers and the existing station service transformer.

k. Install, adjust, level, and test new segregated phase bus from the new 15 kV switchgear to the existing generator main leads including the modification of the generator main leads to connect the new bus at the generator main floor to make it fully operational.

l. Install, adjust, level, and test new non-segregated phase bus from the new 15 kV switchgear to the new GSU transformers (provided by others) and connect to the low voltage bushings to make it fully operational.

m. Furnish, install, and test the new 480 VAC-120/208 VAC Power center.

n. Furnish, install, and test two new motor control centers to supply power to powerhouse auxiliary systems to include programming internally mounted PLC.

o. Furnish and install new grounding conductors to new equipment.

p. Layout, manufacturer, wire, test and deliver FOB Denison two new control room main board rear panels for replacement of the the existing transformer relay panels with new digital transformer relays. Panels to be installed by others based on Contractor provided installation wiring drawings.

q. Install all new wire, cables and raceway required to connect the new equipment and make it fully operational including remote operation, alarm and indication. Cables going to control room to be installed by Contractor but terminated on control room end by others.

r. Furnish and install all new raceways as required to install the new equipment including supports.

s. Furnish as-constructed drawings.

t. Furnish the services of manufacturer erecting engineers to supervise, direct the installation, and test the switchgear, bus, and motor control centers.

u. Perform field acceptance testing and commissioning in coordination with the GSU transformer field engineer for the new transformer. GSU

SECTION 01 11 00.00 40 Page 2 transformer field engineer services to be furnished under GSU transformer supply contract.

V. Replace the neutral current transformers on each of the main unit generators.

w. As a an option provide industrial hygienist to perform asbestos survey and test suspected materials.

x. As an option, test, remove, and dispose of asbestos containing materials including all containment, packaging, and disposal costs.

Work shall be performed under the direction of a Certified Industrial Hygienist (CIH). The CIH shall be onsite as needed.

1.2 ATTACHMENTS

See photographs in "Attachments" at the end of this section for information only to assist in identifying and clarifying areas of work. These photographs are not intended to define the scope of the work.

Specifications and drawings shall take precedence over any conflict with these photographs.

1.3 SPECIFICATIONS AND DRAWINGS

Technical specifications in Divisions 01-48 listed in the Table of Contents cover the detailed requirements for the equipment and services listed in the schedule. The drawings listed on INDEX OF DRAWINGS, SHEET G-002 accompany this specification and are part thereof.

1.4 CHANGES IN SPECIFICATIONS AND DRAWINGS

The Government reserves the right to revise or amend the specifications and/or drawings prior to the date set for opening bids. Copies of such amendments will be furnished to all prospective bidders. If the revisions and amendments require material changes in quantities or prices bid, or both, the date set for bid opening may be extended to enable bidders the opportunity to revise their bids. The amendment will include an announcement of the new date for opening bids.

1.5 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"

SECTION 01 11 00.00 40 Page 3

(COR) are used, it shall be understood to also mean "Government" unless otherwise expressly stated.

d. Wherever in these specifications the acronym "GQAR" is used, it shall be understood to mean "Government Quality Assurance Representative", unless otherwise expressly stated.

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

f. Whenever in these specifications the word "Project" is used, it shall be understood to mean Denison Powerhouse.

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION - NOT USED

-- End of Section --

SECTION 01 11 00.00 40 Page 4

Attachments

FOR REFERENCE ONLY

The attached photos are for information only to assist in identifying areas of work and are not intended to define the scope of the work.

Specifications and drawings shall overule any conflict with the photos.

g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Deluge piping to be removed g2hdcrjs Typewritten Text Existing fencing and gate. May be temporarily removed and replaced as necessary to perform work. Posts are mechanical anchored and not embedded in concrete g2hdcrjs Typewritten Text Existing transformers to be removed. 6 plus 1 spare.

g2hdcrjs Typewritten Text Existing oil piping g2hdcrjs Typewritten Text Existing Surge Arrester g2hdcrjs Typewritten Text EL. 545 - View of Transformers from parking lot g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Existing Unit 1 Excitation System Power Potential transformer (PPT) g2hdcrjs Typewritten Text Unit 1 Switchgear to be replaced g2hdcrjs Typewritten Text Access way to cable gallery g2hdcrjs Typewritten Text PPT low voltage cable Cable tray g2hdcrjs Typewritten Text Cable tray for control cables to be extended for new cables to enter new switchgear g2hdcrjs Typewritten Text 15 KV cable tray for PPT primary cables and station service transformer primary cables.

Cables to be replaced. Ground cable to be added g2hdcrjs Typewritten Text EL 528 Front view of Unit 1 switchgear (52G1 and 52S1) g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Control cable tray to be extended to new switchgear to run new cables directly into switchgear g2hdcrjs Typewritten Text PPT low voltage cable tray g2hdcrjs Line g2hdcrjs Typewritten Text Bus to be removed g2hdcrjs Typewritten Text 15KV cable tray g2hdcrjs Typewritten Text PPT low voltage cables to remain g2hdcrjs Line g2hdcrjs Typewritten Text Maintain distance from new Switchgear to existing power potential transformer no less than 3 ft.

g2hdcrjs Typewritten Text The existing concrete is rough chipped out at bottom edge. The existing concrete on floor and wall at edge shall be cut as required to ensure new switchgear maintains a minimum of 3 ft of clearance between equipment on right side.

Typical for both unit 1 and unit 2 switchgear g2hdcrjs Typewritten Text g2hdcrjs Typewritten Text Unit 1 Power Potential Transformer (PPT) g2hdcrjs Typewritten Text EL 528 Front View Unit 1 Switchgear g2hdcrjs Line g2hdcrjs Typewritten Text Existing control cables to be replaced g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Aisle way into cable gallery under transformer deck g2hdcrjs Typewritten Text Control cable Tray for Unit 1 switchgear to be extended into new switchgear g2hdcrjs Typewritten Text 15 KV cable tray for unit 1 switchgear g2hdcrjs Typewritten Text Unit 2 PPT g2hdcrjs Typewritten Text Unit 2 control cable tray g2hdcrjs Typewritten Text Unit 2 Low voltage PPT cable tray g2hdcrjs Line g2hdcrjs Typewritten Text Unit 1 PPT low voltage PPT cable tray. Cables and tray to remain g2hdcrjs Line g2hdcrjs Typewritten Text Main cable trays extending to below the Terminal Room g2hdcrjs Typewritten Text EL 528 Looking from Unit 1 switchgear to unit 2 g2hdcrjs Typewritten Text Unit 2 15 KV cable tray g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text EL 528 Looking from access door south to station service bay, Unit 1 on right g2hdcrjs Typewritten Text Access door to cable gallery below transformer deck g2hdcrjs Typewritten Text Unit 1 switchgear to be replaced g2hdcrjs Typewritten Text Unit 1 Power potential transformer (PPT) g2hdcrjs Typewritten Text 750 KVA Station Service Transformer g2hdcrjs Typewritten Text Iso Phase bus to be removed g2hdcrjs Typewritten Text Main control cable trays which extend to room below Terminal Room g2hdcrjs Line g2hdcrjs Typewritten Text Location of existing transition from iso phase bus to generator main lead bus.

New bus to be extended to generator floor above g2hdcrjs Typewritten Text 15 KV cables to station service transformer to be replaced g2hdcrjs Typewritten Text Control cable to be extended into new switchgear g2hdcrjs Typewritten Text 15 KV cable to PPT to be replaced g2hdcrjs Typewritten Text Existing switchgear control cable to be removed g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Polygonal Line g2hdcrjs Typewritten Text Unit 1 switchgear to be replaced g2hdcrjs Typewritten Text Existing spare transformer nitrogen system to be removed g2hdcrjs Typewritten Text Transformer T1 Nitrogen system to be removed g2hdcrjs Typewritten Text Existing Asbestos trays g2hdcrjs Typewritten Text Space for cable trays and raceways g2hdcrjs Typewritten Text Approximate location of new Motor Control Centers CQ-T1 and CQ-T2 g2hdcrjs Line g2hdcrjs Typewritten Text 15 KV cables to be removed g2hdcrjs Typewritten Text Iso Phase bus to be removed g2hdcrjs Line g2hdcrjs Typewritten Text Approximate location of deck penetration for Deluge piping to be used to run new power and control cables to new transformers g2hdcrjs Typewritten Text EL 528 Cable Gallery - Rear view of Unit 1 switchgear looking south toward Station Service bay g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Typical nitrogen system piping to be removed from tanks to transformers g2hdcrjs Typewritten Text Location of new Power Center

CR-B1

g2hdcrjs Line g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Gallery gutter. New unit 1 and unit 2 switchgear to be moved upstream toward generator so it does not span the gutter g2hdcrjs Line g2hdcrjs Oval g2hdcrjs Typewritten Text Insulating oil piping to be removed g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Polygonal Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Transformer T1 Nitrogen system to be removed.

g2hdcrjs Typewritten Text Unit 1 switchgear to be removed g2hdcrjs Typewritten Text Access way to turbine room g2hdcrjs Typewritten Text Iso phase bus to be removed g2hdcrjs Typewritten Text Cable tray and raceway to be removed g2hdcrjs Typewritten Text Cables to be removed g2hdcrjs Typewritten Text Bus to be removed g2hdcrjs Typewritten Text Approximate location of new power center CR-B1 g2hdcrjs Typewritten Text EL 528 Cable gallery review view of unit 1 switchgear g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Typical nitrogen \piping to be removed from tanks to transformers

Deluge piping to be modified for control and power cables to new transofmres g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Polygon g2hdcrjs Line g2hdcrjs Typewritten Text Unit 1 switchgear to be removed g2hdcrjs Typewritten Text Access way to turbine room g2hdcrjs Typewritten Text Transformer T2 Nitrogen system to be removed g2hdcrjs Typewritten Text Unit 2 switchgear g2hdcrjs Typewritten Text Asbestos trays g2hdcrjs Typewritten Text Typical control/power cable drops from each transformer g2hdcrjs Typewritten Text 15 KV cable and raceway to be removed g2hdcrjs Typewritten Text Iso phase bus to be removed g2hdcrjs Typewritten Text Typical nitrogen piping to each transformer to be removed g2hdcrjs Typewritten Text Space available for installing raceways g2hdcrjs Typewritten Text EL 528 cable gallery- Looking north from unit 1 to unit 2 g2hdcrjs Line g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Insulating oil piping g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Unit 2 PPT Low voltage cables to remain g2hdcrjs Typewritten Text Unit 2 PPT 15 KV cables to be replaced g2hdcrjs Typewritten Text Unit 2 Power Potential Transformer (PPT) g2hdcrjs Typewritten Text Unit 2 switchgear to be removed g2hdcrjs Typewritten Text Control cables and cable trays.

Cables to be removed and cable tray to be extended to run cable into new switchgear g2hdcrjs Typewritten Text PPT low voltage cable tray g2hdcrjs Typewritten Text

PPT 15 KV

cable tray g2hdcrjs

EL 528 Front view of unit 2 switchgear g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text PPT Low voltage cable to remain g2hdcrjs Typewritten Text

PPT 15 KV

cable to be replaced g2hdcrjs Typewritten Text 15 KV cable tray g2hdcrjs Line g2hdcrjs Typewritten Text Unit 2 Power Potential Transformer (PPT) g2hdcrjs Typewritten Text Unit 2 switchgear to be removed g2hdcrjs Typewritten Text Bus to be removed g2hdcrjs Typewritten Text PPT low voltage cable tray g2hdcrjs Typewritten Text Cable tray to be extended to new switchgear g2hdcrjs Typewritten Text The new switchgear to be moved upstream to be flush with cable gallery wall in rear. Distance from new Switchgear to existing power potential transformer to be no less than 3 ft.

g2hdcrjs Line g2hdcrjs Typewritten Text g2hdcrjs Typewritten Text EL 528 Front view of unit 2 switchgear g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text EL 528 Cable Gallery Rear view of Unit 2 Switchgear g2hdcrjs Typewritten Text Transformer T2 Iso Phase Bus to be removed g2hdcrjs Typewritten Text Transformer T2 Nitrogen system to be removed g2hdcrjs Typewritten Text Typical routing of Nitrogen system piping to transformers to be removed g2hdcrjs Typewritten Text Approximate location of deluge piping penetration of the transformer deck g2hdcrjs Typewritten Text 15 KV cable and raceway to be removed g2hdcrjs Typewritten Text Unit 2 switchgear to be removed g2hdcrjs Polygon g2hdcrjs Line g2hdcrjs Typewritten Text Space for new cable tray and raceways g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Nitrogen piping to be removed from tanks to transformers g2hdcrjs Oval g2hdcrjs Typewritten Text Insulating oil piping to be removed g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Bus to be removed g2hdcrjs Typewritten Text Unit 2 15 KV cables and raceway to be removed g2hdcrjs Typewritten Text Unit 2 switchgear to be removed g2hdcrjs Typewritten Text Transformer T2 nitrogen system to be removed g2hdcrjs

EL 528 Rear view of Unit 2 switchgear g2hdcrjs Rectangle g2hdcrjs Polygon g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Polygon g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text EL 528 Cable gallery View from Station Service Bay toward Unit 1-2 g2hdcrjs Typewritten Text Space available for new cable tray and conduits g2hdcrjs Line g2hdcrjs Typewritten Text Approximate location of new motor control centers CQ-T1 and CQ-T2 g2hdcrjs Typewritten Text Asbestos cable trays g2hdcrjs Typewritten Text Typical nitrogen pipng to be removed g2hdcrjs Typewritten Text Iso Phase bus to be removed g2hdcrjs Typewritten Text Unit 1 switchgear to be removed g2hdcrjs Line g2hdcrjs Typewritten Text Stairway down g2hdcrjs Line g2hdcrjs Typewritten Text Gallery Gutter g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Insulating oil piping to be removed g2hdcrjs Typewritten Text Spare transformer nitrogen system to be removed

Polygon g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Ceiling deck joint drainage hoses.

New CQ-T1 and CQ-T2 to be place between deck joints g2hdcrjs Typewritten Text Spare Transformer nitrogen system to be removed g2hdcrjs Line g2hdcrjs Typewritten Text Iso phase bus to be removed g2hdcrjs Typewritten Text Unit 1 switchgear to be removed g2hdcrjs Line g2hdcrjs Typewritten Text Transformer T1 nitrogen system to be removed g2hdcrjs Line g2hdcrjs Typewritten Text Stairway Down g2hdcrjs Typewritten Text EL 528 Cable Gallery- Approximate location of new Motor control centers g2hdcrjs Line g2hdcrjs Typewritten Text Typical nitrogen system piping to be removed from tank to transformer g2hdcrjs Oval g2hdcrjs Oval g2hdcrjs Typewritten Text Typical nitrogen system piping to be removed from tanks to transformers g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Gallery Gutter g2hdcrjs Line g2hdcrjs Typewritten Text Space available for installation of the new Motor Control Centers CQ-T1 and CQ-T2. Mount away from wall out of gutter. Mount between the ceiling deck joints

EL 528 Station Service 480 volt switchgear. Supply to new Motor control centers g2hdcrjs Line g2hdcrjs Typewritten Text Existing breaker to be connected to supply the new motor control center CQ-T1 g2hdcrjs Line g2hdcrjs Typewritten Text Existing breaker to be connected to supply the new motor control center CQ-T2 g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Iso phase bus to be replaced g2hdcrjs Typewritten Text iso phase bus/generator main lead bus transition housing g2hdcrjs

EL 528 Iso Phase bus transition compartment. Looking up from floor of el 528

Coupling capacitors to be emoved and turned over to the Government g2hdcrjs Line g2hdcrjs Typewritten Text Iso Phase bus to be removed g2hdcrjs Typewritten Text Generator Bus to be modified to connect to new non-segregated bus at approximatedly el 545 g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Iso phase bus - generator bus transition housing with cover removed g2hdcrjs Line g2hdcrjs Typewritten Text Insulating barrier at floor of generator air housing.

New bus to be installed above this location and new insulating barrier to be provided g2hdcrjs Typewritten Text Ceiling of EL 528 - View looking up to generator main leads from floor of elevation 528

EL 545 Generator Main leads at air housing door g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text Existing generator main leads.

To be modified to connect to new non-segregated bus.

Bus to be terminated in this location g2hdcrjs Typewritten Text Existing insulating barrier to be replace to accommodate the new non-segregated bus g2hdcrjs Line g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Typewritten Text The new non-segregated bus to be terminated above EL 545.

Modify the existing generator main bus to terminate to the bus

Oval g2hdcrjs Line g2hdcrjs Typewritten Text Generator main lead bus to be modify to connect to the new non-segregated bus.

New Bus to terminate above the floor inside generator housing g2hdcrjs Typewritten Text g2hdcrjs Line g2hdcrjs Typewritten Text Existing insulating barrier in floor of generator air housing g2hdcrjs Typewritten Text EL 545 Generator Main Leads. Looking toward floor

EL 545 Generator Main lead Bus with air housing door open g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Main generator leads exiting generator g2hdcrjs Typewritten Text Location of terminals for new non-segregated bus g2hdcrjs Typewritten Text Existing insulating barrier floor

EL 545 Generator Neutral Bus and current transformers g2hdcrjs Line g2hdcrjs Typewritten Text Generator Neutral Current transformers.

Replace with different turns ratio g2hdcrjs Line g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text Three neutral current transformers to be replaced. Located inside generator air housing g2hdcrjs

EL 545 Generator neutral current transformers inside air housing

EL 528 Turbine floor looking from unit 1 toward Station service bay g2hdcrjs Line g2hdcrjs Line g2hdcrjs Oval g2hdcrjs Line g2hdcrjs Line g2hdcrjs Typewritten Text 15 KV cables to be replaced g2hdcrjs Typewritten Text 750 KVA station service transformer g2hdcrjs Typewritten Text Two spare 15 KV breakers to be removed g2hdcrjs Line g2hdcrjs

15 KV cable tray g2hdcbjb mounting area for arrester discharge counters g2hdcbjb Oval g2hdcbjb Line g2hdcbjb Typewritten Text Bus penetration through transformer pedestal, typ.

g2hdcbjb Line g2hdcbjb Typewritten Text space between transformer rails and bus penetration g2hdcbjb Line g2hdcbjb

EL 545 - Powerhouse downstream wall

EL 545 - Transformer rail and spare transformer area

Text Box

EL 545 - Transformer rail and existing transfer cart g2hdcbjb Typewritten Text Existing transfer cart g2hdcbjb Line

Rectangle

EL 545 Deck - Existing Surge Arresters g2hdcbjb Typewritten Text replace surge arresters g2hdcbjb Typewritten Text If required due to layout changes, provide new drop from tension wire to arrester g2hdcbjb Typewritten Text Existing brackets and supports g2hdcbjb Line g2hdcbjb Line

EL 545 - Existing transformer transfer cart g2hdcbjb Typewritten Text Contractor may use the existing transfer cart. The Government makes no claims to its fitness for transferring transformers; Contractor is responsible to verify and analyze capacity for use.

g2hdcbjb Line g2hdcrjs Oval g2hdcrjs Line g2hdcrjs

Oil piping typical