Denison_Photo_Attachment.pdf

Attachments

FOR REFERENCE ONLY

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 New switchgear to be moved forward to be flush with cable gallery wall in rear. 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 to cable gallery toward Unit 1 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 Gallery gutter. New unit 1 and unit 2 switchgear to be moved upstream toward generator so it does not span the gutter 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 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 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 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 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 i nstalling raceways g2hdcrjs Typewritten Text EL 528 cable gallery- Looking from unit 1 to unit 2 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 Typewritten Text 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 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 Spare transformer nitrogen system to be removed 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

Gallery Gutter

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

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 Replace insulating barrier in floor of generator air housing to accommodate the new non-segregated bus 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 to be replaced

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

EL 545 - Transformer rail and existing transfer cart g2hdcbjb Typewritten Text Contractor may use the existing transfer cart, or use jack and skid to traverse the trailrace deck

EL 545 Deck - Existing Surge Arresters g2hdcbjb Typewritten Text remove existing arrester support stand-off;

replace only if required by arrester manufacturer 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 remove existing brackets and provide new brackets g2hdcbjb Typewritten Text contractor may change:

-height of mounting bracket -length of slack drop -provide mounting base on top of bracket as required to place arresters in the correct location relative to the transformer terminals 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.