26_20_10_-_Temporary_Power_Equipment_8_24_0002.pdf

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FG STATION SERVICE SWITCHGEAR UPGRADE
Solicitation number
140R4022R0009
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This solicitation package outlines requirements for a construction contract to upgrade station service switchgear at two Bureau of Reclamation power plants. The contractor will be required to provide new switchgear, relays, switchboards, generators and related equipment. A firm fixed price contract will be awarded following a competitive solicitation process in accordance with FAR Parts 15 and 36. Offerors must demonstrate sufficient bonding capacity. The temporary power specifications require the contractor to submit plans and equipment lists for providing temporary power during the upgrade work, along with plans for removal of temporary systems. Critical loads to be supported include transformers, motor controls, pumps, lighting panels and station heaters. This small business set-aside opportunity is issued by the Bureau of Reclamation.

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Flaming Gorge and Fontenelle Powerplants Station Service Replacement Colorado River Storage Project

Solicitation No. 140R4022R0009

MOD P0002

Temporary Power Equipment 26 20 10 - 1

SECTION 26 20 10

TEMPORARY POWER EQUIPMENT

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Cost:

1. Include cost in lump sum prices offered in Price Schedule A for Secondary Unit Substation and Price Schedule B for Switchboard, D1A.

1.02 REFERENCE STANDARDS

A. National Electrical Manufacturers Association (NEMA)

1. NEMA 250-2018 Enclosures for Electrical Equipment

B. National Fire Protection Association (NFPA)

1. NFPA 70-2020 National Electrical Code (NEC)

1.03 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 – Submittals and Section 01 33 26 – Electrical Drawings and Data.

B. RSN 26 20 10-1, Flaming Gorge Temporary Power Plan:

1. Sequencing plan including methods to connect to existing facilities.

2. Plan view of temporary conduit/cable routing and equipment locations. Include height above finished floor for overhead conduit and cables.

3. Ratings and physical sizes of equipment.

4. Manufacturer data sheets:

a. Power distribution board.

b. Low-voltage power conductors.

c. Conduit.

d. Pull boxes.

e. Isolation barriers.

C. RSN 26 20 10-2, Flaming Gorge Temporary Power Removal Plan:

1. Government response letter to RSN 26 16 14-7, Field Test Reports, stating that the RSN is approved.

Colorado River Storage Project Solicitation No.

Temporary Power Equipment

26 20 10 - 2

2. Schedule.

3. Sequencing of removal.

4. Equipment to be removed.

D. RSN 26 20 10-3, Fontenelle Temporary Power Plan:

1. Sequencing plan including methods to connect to existing facilities.

2. Plan view of temporary conduit/cable routing and equipment locations. Include height above finished floor for overhead conduit and cables.

3. Ratings and physical sizes of equipment.

4. Manufacturer data sheets:

a. Power distribution board.

b. Low-voltage power conductors.

c. Conduit.

d. Pull boxes.

e. Isolation barriers.

E. RSN 26 20 10-4, Fontenelle Temporary Power Removal Plan:

1. Government response letter to RSN 26 24 13-4, Field Test Reports, stating that the RSN is approved.

2. Schedule.

3. Sequencing of removal.

4. Equipment to be removed.

1.04 PROJECT CONDITIONS

A. Provide temporary power equipment, conductors and conduit to power following critical station service loads at Flaming Gorge Powerplant:

1. Miscellaneous power board MSB

2. Miscellaneous power board MSA

3. 112.5kVA Transformer KRA

4. Motor control center MRA

5. Boiler #1 480VAC.B1

6. Domestic Water Pump No 2.

7. Unit power board M3A

8. 75kVA transformer K1B

9. Miscellaneous power board MCA

26 20 10 - 3

10. Unit power board M1A

11. Unit power board M2A

12. Unit Power Boards M3A,

13. Dam Feeders P1, P2, P3, and P4.

14. Crane

B. Provide temporary power equipment, conductors, and conduit to power following critical station service loads at Fontenelle Powerplant:

1. Fire protection pump 20 HP.

2. WAPA’s battery chargers 10kVA.

3. High Bay Light Transformer.

4. Sump high water level device.

5. WAPA/Bridger Valley telemetering.

6. Emergency lighting contactor.

7. Lighting panelboard L1A (16kW).

8. Lighting panelboard LSA (22kW).

9. River outlet works.

10. Gate control house 55A.

11. Station heater NO. 1 (55kW).

12. Station heater NO. 2 (55kW).

13. Station heater NO. 3 (52kW).

14. Station heater NO. 4 (12kW).

15. Modular office power.

16. UPS transformer (15kVA, 1-PH, 480-240/120V).

17. Battery charger NO. 1.

18. Battery charger NO. 2.

C. Contractor may propose an alternate temporary power solution. Obtain Government approval of an alternate temporary power plan.

PART 2 PRODUCTS

2.01 TEMPORARY POWER TRANSFORMER

A. Flaming Gorge: Contractor may use transformer KR1A or KR1B as the temporary power transformer.

26 20 10 - 4

B. Fontenelle: Contractor may use transformer KSB as the temporary power transformer.

2.02 TEMPORARY FUSED DISCONNECT SWITCH

A. Ratings:

1. Maximum voltage: 508V, rms (System voltage: 480V).

2. Phasing: Three phase, no neutral.

3. Power frequency: 60 Hz.

4. Continuous current:

a. Flaming Gorge: 1200A, minimum.

b. Fontenelle: 600A, minimum.

5. Withstand/interrupting current rating at 480V: 15K AIC.

B. Fused disconnect switch shall selectively coordinate with feeder breakers at the required trip setting.

C. A circuit breaker with similar ratings may be used as an alternative to a fused disconnect switch. Disconnecting means shall be in a separate enclosure from the feeder breakers in the temporary power distribution board.

2.03 TEMPORARY POWER DISTRIBUTION BOARD

A. Ratings:

1. Maximum voltage: 508V, rms (System voltage: 480V).

2. Power frequency: 60 Hz.

3. Continuous current:

a. Bus:

1) Flaming Gorge: 1200A, minimum.

2) Fontenelle: 600A, minimum.

b. Main Breaker: None.

c. Feeder breakers, adjustable trip LSI with continuous current rating: As shown on single line diagrams.

4. Withstand/interrupting current rating for bussing and breakers:

a. Short time current: 30,000 A.

b. Short-circuit current rating at 480V: 30,000 A.

B. Temporary fused disconnect switch shall selectively coordinate with feeder breakers and fused disconnect switch at required trip setting.

Colorado River Storage Project Solicitation No.

Temporary Power Equipment 26 20 10 - 5

2.04 TEMPORARY POWER CONDUCTORS

A. Meet or exceed requirements listed in Section 26 05 20 – Conductors and Cables.

B. Minimum size shown on single line diagrams.

2.05 TEMPORARY CONDUIT

A. Meet or exceed requirements listed in Section 26 05 33 – Raceways and Boxes.

B. Rigid Metal Conduit: Evaluated and sized per NFPA 70.

2.06 PULL BOXES

A. NEMA 250, Type 4.

PART 3 EXECUTION

3.01 GENERAL

A. Do not install temporary power equipment, 480V cables, conduit, and associated items until RSN 26 20 10-1 and RSN 26 20 10-3, Temporary Power Plan, are approved.

B. Do not remove temporary power equipment, 480V cables, conduit, and associated items prior to Government:

1. Acceptance of new switchgear

2. Approval of RSN 26 20 10-2 and RSN 26 20 10-4, Temporary Power Removal Plans.

C. Comply with Section 01 14 30 – Interruption of Service.

D. Install and remove personal protective grounds, not listed in this Section.

E. Provide temporary lighting for work area and egress when lighting circuits are de-energized.

F. Government may energize the engine generator during station service de-energization.

G. Contractor may splice conductors near location of switchgear DRA and switchboard D1A so that existing conductors to loads can be used for temporary power.

3.02 INSTALLATION

A. Perform work in accordance with the approved sequencing plan provided in RSN 26 20 10-1 and RSN 26 20 10-3 Temporary Power Plan to reduce the downtime of the station service loads.

Colorado River Storage Project Solicitation No.

Temporary Power Equipment 26 20 10 - 6

B. Install conduits, supports, and boxes required per NFPA 70.

3.03 REMOVAL

A. Remove and dispose of items associated with temporary power.

B. Comply with Section 01 74 00 – Cleaning and Waste Management.

END OF SECTION

File details come from the government source that posted it. Updated .