361AndersonRanchPPStationServiceReplacement_amd_003.pdf

Solicitation No. R15PS00361 Anderson Ranch Powerplant Station Service Replacement

Amendment No. 003

(Revised) 26 05 10 - 5

I. UL listed and UL labeled on outer surface with NFPA 70.

2.04 ACCESSORIES

A. Single Conductor Markers:

1. Type: Heat-shrink or self-laminating-vinyl type, machine printable sleeve.

2. Color: White with black text.

3. Text size: As large as practical but at least 7 point (0.06 inch).

4. Computer generated lettering.

5. Length: 1 inch, minimum.

6. Diameter suitable for installation on the intended conductor.

B. Multiconductor Cable Tags:

1. Type: Cross-laminated polyethylene film or Nomex. Be resistant to water, oil, solvent, abrasion, and tearing.

2. Rectangular shape and have minimum dimensions of 2 by 0.5 inches.

3. Color: White with black text.

4. Text size: As large as practical but at least 16 point (0.16 inch).

5. Attach to cable with standard nylon self-locking tie wraps or cable ties.

C. Terminal connectors for control cable:

1. Heavy-duty, preinsulated, pressure-crimp-type with ring tongues.

2. Tin-plated copper.

3. Serrated inner barrel.

4. 600-volt-rated nylon insulation.

5. Insulation support sleeve for vibration resistance.

6. UL listed.

7. Compatible with conductor size and type of cable for which it is used.

D. Cable ties: Heat stabilized nylon tape.

PART 3 EXECUTION

3.01 INSTALLATION

A. Provide new cables in existing conduits and/or existing cable trays for the following items:

1. Indoor power cable from Switchgear DSA to:

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a. Panel MSA.

b. Automatic Transfer Switch that feeds Panel MSK.

c. Panel NSA-1.

d. Panel NSA-2.

e. Transformer KSD.

f. Transformer KSE.

g. DC distribution board BSA for 125VDC power: 2 conductor - #10 AWG.

2. Indoor power cable:

a. From Panel MSK to Transformer KSK: 2 conductor - #10 AWG.

b. From Transformer KSK to Panel MSK-2: 3 conductor - #10 AWG.

c. From Panel MSK-2 to Control Board CSA: 2 conductor - #10 AWG.

3. Multiconductor control cables to Control Board CSA.

a. Number of cables:

1) From Substation:

a) 12 conductor - #16 AWG: 8 cables

b) 5 conductor - #12 AWG: 1 cable

c) 5 conductor - #10 AWG: 1 cable

2) From Temporary Power Distribution Board:

a) 5 conductor - #16 AWG: 1 cable

b. Pull cable from Substation to cable spreading room below Control Board

CSA.

c. Government will pull cable from cable spreading room to Control Board

CSA.

d. Government will land wires on terminal blocks at Control Board CSA.

B. Provide new temporary power cables from Temporary Power Distribution Board to:

1. Panel MSA.

2. Automatic Transfer Switch that feeds Panel MSK.

3. Panel NSA-1.

4. Panel NSA-2.

5. Transformer KSD.

6. Transformer KSE.

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C. Route temporary power cables in new conduits and/or cable trays when using non-MC or non-AC cables.

D. Comply with NFPA 70 and IEEE C2.

E. Size of conductors and cables based on the larger of:

1. NFPA 70

2. Existing installation.

3. As specified on drawings.

4. As specified in this Section.

F. Install cable without exceeding allowable pulling tensions and sidewall pressures recommended by cable manufacturer.

G. Do not splice multi-conductor control cables.

H. Conduit installation:

1. Do not pull cable into conduits until conduit runs have been cleaned and are free from obstructions and sharp corners.

2. Draw a clean, dry, tight-fitting rag through conduit immediately before installing cable.

3. Install cable to prevent cuts or abrasions in insulation or protective covering, or kinks in cable.

4. Block cable opening in sleeves under equipment or passing through blockouts, with silicone-foam, fire-retardant type material in accordance with NFPA 70.

5. Lubricant:

a. Use only as aid to pulling.

b. Soapstone or other suitable material not injurious to cable sheath.

6. Where conductors carrying alternating current are installed in ferrous metal enclosures or metal raceways, arrange to avoid heating surrounding ferrous metal by induction. Group phase conductors together.

I. Grounding.

1. Install 1 nonactive conductor grounded at both ends in each non-twisted pair shielded control cable. Ground shielding of each shielded control cable on both ends directly to equipment ground bus by method indicated on Standard Drawing 40-D-4335, Figure 8.

2. Ground shielding of twisted pair shielded cables only to source equipment ground bus using pressure crimp type connectors with ring tongues on drain wire.

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3. Ground spare conductors by wire jumpers from equipment terminal block points to equipment ground bus.

J. Marking:

1. Mark conductors, whether single-conductor cables or individual conductors of multiconductor control, instrumentation, and power cables at each end with conductor designation on first line followed by cable designation on second line as indicated on approved wiring diagrams.

2. Mark spare conductors of multiconductor cables with cable designation and word

"SPARE".

3. Numerically sequence markings (e.g., 2CSA-CSB-SPARE1).

K. Tagging.

1. Tag multiconductor cables at each end.

2. Attach tags to cable by self-locking cable ties.

3. Mark tags with cable designation.

a. Cable designations: As indicated on approved wiring diagrams.

b. Provide computer- or electronic label maker-generated lettering.

Individual stickers for letters and numbers are not permitted.

L. Terminate control and instrumentation wire with terminal connectors.

M. Wiring methods:

1. Form conductors into neat packs, or lace conductors, or tie conductors with self-locking cable ties at termination point of multiconductor cable.

2. Do not combine alternating-and direct-current circuits, or current and potential transformer circuits in same multiconductor cable.

3. Support cable installed in a vertical or inclined plane by cable grips (including hooks). Installed cable with slack spans between supports.

4. Clamp cable entering equipment with commercial type cable clamps.

5. Leave sufficient length cable ends to make connections conveniently to equipment, fixtures, and devices.

6. Install 5-conductor cable for each 3-phase current and potential transformer circuit.

7. Retain sufficient length of conductors in a current transformer cable length to reach farthest terminal used to select current transformer ratios.

8. Retain spare single conductors at each end of a multiconductor cable in a length equal to longest single conductor of multiconductor cable.

9. Run direct-current circuits connected to a device radially.

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10. Run both positive and negative leads of a circuit in same cable.

11. Tie cables that are installed under a raised floor system or are installed external to plant and are not in conduit, and that consist of 2 or more single conductors, together at 10-foot intervals by self-locking cable ties.

3.02 CONTRACTOR FIELD QUALITY TESTING

A. Comply with NEMA WC 74 and NETA ATS.

B. Test cables in large groups to minimize number of testing sessions.

C. Notify COR, in writing, of date, time, and cables to be tested at least 5 working days before testing.

D. Pre-installation Testing:

1. Insulation resistance.

E. Post-installation Testing:

1. Continuity.

2. Tightness of bolted electrical connections by calibrated torque wrench method.

3. Thermographic survey.

F. Insulation resistance test parameters:

1. Perform test before connection to equipment.

2. Measure insulation resistance between each conductor and station ground with other conductors in same cable or conduit grounded.

3. Test voltage: 1,000 volts direct-current (negative), minimum for 600V cable or as required for temperature correction.

4. Minimum acceptable insulation resistance: R in MΩ = (rated voltage in kV + 1) x 1000/length in ft.

5. Duration: 1 minute.

6. Record following test data on test report for each conductor tested:

a. Date of test.

b. Name or names of Contractor's personnel who performed test.

c. Name of Government inspector who witnessed test.

d. Conductor identification.

e. Megohms between conductor and ground.

f. Total length of conductor.

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G. If single-conductor or a conductor in a multi-conductor cable fails continuity or insulation resistance testing, remove and replace conductor and cable. Perform tests on conductors that were replaced.

H. Thermographic survey parameters:

1. A qualified Government representative will perform a thermographic survey.

Contractor shall record temperatures at cable terminations.

2. If initial survey detects hotspots, Contractor to correct deficiency at hotspots and retest. Contractor shall provide a list of hotspots including corrective actions taken. Contractor shall provide final survey results showing no deficiencies.

END OF SECTION

Boise Project, Idaho

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C. Assemble boards with molded-case circuit breakers individually mounted on fixed framework behind easily removable covers.

D. Supply blank spaces for future circuit breakers on each board as indicated on drawings.

Cover blank spaces with removable plates.

E. Furnish typed circuit directory for each panel.

F. Load centers and plug-in type breakers shall be used for Panel MSK-2 only.

2.07 SOURCE QUALITY TESTING

A. Perform dielectric test in factory in compliance with NEMA PB 1.

PART 3 EXECUTION

3.01 GENERAL

A. Coordinate the replacement of panels and breakers with Section 01 14 30 - Outages and Section 01 14 31 - Interruption of Service.

3.02 INSTALLATION

A. Install ground cable between panelboard ground bar and existing grounding electrode conductor.

B. Provide anchoring, supporting, and mounting materials as required.

C. Connect incoming and outgoing conductors.

D. Existing panelboards MKA, MSB, NSC and NSD are mounted inside recessed metal enclosures with a sheet metal cover. Size replacement panel to fit in existing enclosure with cover mounted flush to sheet metal cover. Provide mounting provisions for panelboard with proper spacers for secure installation. See Section 51 00 20 - Photographs for a photograph of an existing panelboard onsite that was replaced in manner described above.

E. Install ground cable between panelboard enclosure and existing metal enclosure when mounting panel inside existing metal enclosure per Section 26 05 20 - Grounding and Bonding and NFPA 70.

F. Install Government-furnished equipment: Panel MUA.

G. Panel MSK-2 and Transformer KSK shall be located in the Station Service Room near battery distribution panel BSA. Coordinate final locations with COR prior to installation.

Wall mount Transformer KSK adjacent to Panel MSK-2 at a minimum height of 96 inches above finished floor.

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3) KSD: 400A.

4) KSE: 100A.

5) NSA-1: 400A.

6) NSA-2: 400A.

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

a. Short time current: 42,000 A.

b. Short-circuit current rating at 480V: 42,000 A.

5. Alarm contact for main breaker:

a. Rating: 125VDC.

b. Form B contact to close when breaker trips on overcurrent.

1) If main breaker includes a digital trip unit, contact to close on undervoltage of input power to digital trip unit.

2.03 TEMPORARY POWER MEDIUM VOLTAGE CABLES

A. Meet or exceed requirements listed in Section 26 05 13 - Medium-Voltage Power Cable System.

2.04 TEMPORARY POWER CONDUCTORS

A. Meet or exceed requirements listed in Section 26 05 10 - Conductors and Cables.

B. Conductors shall be evaluated and sized per NFPA 70.

2.05 TEMPORARY CONDUIT

A. Meet or exceed requirements listed in Section 26 05 33 - Electrical Conduit.

PART 3 EXECUTION

3.01 GENERAL

A. Removal of temporary power equipment, 480V cables, conduit, and associated items shall not commence until the new unit substation for station service has been accepted by the Government and RSN 26 26 00-2 for removal of temporary power equipment has been approved.

3.02 INSTALLATION

A. Install temporary power equipment in space allocated by Government.

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

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C. Installation of temporary power equipment includes following:

1. Temporary power equipment installation:

a. Setup electrical equipment, install conduit, supports, boxes, and prepare medium voltage conductors for connection to Generator 2 Bus.

b. Open and lockout feeder breakers in temporary power distribution board.

Connect temporary 480V cables to temporary power distribution board.

Connect temporary power medium voltage cables to high-side of temporary power transformer.

c. Notify COR for Government to switch source of station service power to transformer KSA.

d. Notify COR for Government to open, rackout, and lockout Unit Breaker J2A, Switchyard Breaker JY2A, and Station Service breaker 52B.

e. Disconnect and remove medium voltage cables and potheads from Generator 2 bus to transformer KSB.

f. Connect temporary power medium voltage cables to new potheads at Generator 2 bus.

g. Confirm proper connections to temporary power transformer and temporary power distribution board.

h. Notify COR for Government to restore power to Generator 2 bus which will energize temporary power transformer and distribution board.

2. Individual cutover from Switchgear DSA to Temporary Power:

a. After temporary power equipment is installed and energized, schedule individual cutover of load with COR prior to work.

b. Ensure temporary power conductors connected to temporary power solution are not energized (feeder breaker open and locked out and zero voltage confirmed). Ensure that temporary power conductors are installed to an optimal location to minimize duration of individual cutover duration of each load.

c. Open and lockout breaker in Switchgear DSA that is associated with load being cutover.

d. Disconnect and remove power conductors from load being cutover. Do not disconnect conductors from Switchgear DSA due to Arc Flash Hazard.

e. Connect temporary power conductors to the associated load.

f. Confirm proper connections.

g. Energize the load from temporary power distribution board.

h. Confirm with COR that plant equipment affected by loss of power has been placed back online and is operating properly.

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i. After the load is energized, cutover the next load.

j. When all 6 loads are powered by the temporary power solution, notify the COR prior to leaving the plant.

3.03 REMOVAL

A. Contractor is responsible for removal and disposal of items associated with temporary power.

1. Comply with Section 01 74 00 - Cleaning and Waste Management.

B. Disconnection of temporary power equipment includes following:

1. Restoration of power to new unit substation from Generator 1 Bus.

a. Checkout and testing shall be performed and witnessed by the Government on unit substation prior to energizing the substation from Generator Busses.

b. Unit substation shall be first powered from Generator 1 bus through transformer KSA.

c. Perform testing on unit substation while energized from one source.

d. Plan, schedule, and perform the individual cutover of loads fed from temporary power distribution board to new substation.

2. Restoration of power to new unit substation from Generator 2 Bus.

a. After the station service loads are powered from the new substation and Generator 1 is generating power, begin interruption of service on Generator 2.

b. Remove temporary power medium voltage cables.

c. Install and connect new medium voltage cables from Generator 2 Bus to unit substation.

d. Confirm, with COR, power is restored to transformer KSB (with 52B open and locked out).

e. Perform required testing for unit substation.

END OF SECTION