21._Attachment_A_-_Reformed_Guernsey_Transformer_Replacement_Specifications.pdf

Attachment A

Guernsey Rural Substation Transformer Replacement Project Specifications

DE‐SOL‐0008513

10 August 2015

REFORMED

GUERNSEY RURAL SUBSTATION

TRANSFORMER KY1A REPLACEMENT

Spec. No. 842

SECTION C

DESCRIPTION/SPECIFICATIONS

WYOMING

SECTION C

DESCRIPTIONS/SPECIFICATIONS

GUERNSEY RURAL SUBSTATION TRANSFORMER KY1A REPLACEMENT

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENTS

B. DESCRIPTION OF WORK

1. Sitework

2. Concrete

3. Substation Electrical

C. DESCRIPTION OF BIDDING SCHEDULE ITEM

1. Bidding Schedule item “Mobilization and preparatory work”

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK

1. Commencement and Completion

2. Submittal Approval Time

3. Commencement of Control Work

4. Outage Restrictions

5. Construction Schedule Restrictions

6. Maximum Available Fault Current

E. CONSTRUCTION SCHEDULE

1. Submittal Time

2. Format and Detail

F. MATERIAL

G. RIGHTS-OF-WAY

H. GEOLOGIC INVESTIGATIONS

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES

J. WATER FOR CONSTRUCTION PURPOSES

K. EXPLOSIVES AND BLASTING

L. SUBMITTALS

1. General

2. Submittal Response

3. Approval Time

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEM

1. Bidding Schedule item “Sitework”

2. Bidding Schedule item “Demolition”

3. Bidding Schedule does not contain separate items

DIVISION 3 – CONCRETE

A. GENERAL

1. Material

2. Test for Potential Reactivity of Sand and Coarse Aggregate

3. Curing

B. DESCRIPTION OF BIDDING SCHEDULE ITEM

1. Bidding Schedule item “Concrete foundations”

DIVISION 4 – SUBSTATION METALWORK

A. GENERAL

1. Measurement

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Steel platforms, welded (galvanized)”

DIVISION 9 – SUBSTATION ELECTRICAL

A. GENERAL

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS

1. Bidding Schedule item “Power transformer, 110-kV, 20 MVA, three-phase (Government-furnished)”

2. Bidding Schedule item “Removal and disposal of existing power transformer”

3. Bidding Schedule item “Associated electrical equipment and material”

4. Bidding Schedule items “Furnishing 5/c No. 10 AWG control cable” and “Furnishing 12/c

No. 10 AWG control cable”

5. Bidding Schedule items “Installing 5/c No. 10 AWG control cable” and “Installing 12/c

No. 10 AWG control cable”

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

A. DESCRIPTION

1. Environmental Quality Protection

DIVISION 1 – GENERAL REQUIREMENTS

A. CONTRACT REQUIREMENTS:

Construct and complete Guernsey Rural Substation, Transformer KY1A Replacement, in accordance with the Construction Contract (Standard Form 1442); the Contract Clauses; Western’s Construction Standards, including Standard 1 – General Requirements (September 2013), Standard 2 – Sitework (September 2013), Standard 3 – Concrete (September 2013), Standard 4 – Substation Metalwork and Transmission Line Lattice Structures (September 2013), Standard 9 – Substation – Electrical (September 2013), Standard 13 – Environmental Quality Protection (September 2013), Standard 15 – Drawings (September 2013); Standard Drawings; and these Project Specifications and Drawings.

If a conflict occurs between the Project Specifications and the Construction Standards, the Project Specifications shall govern. The Project Specifications and Drawings are used to take exceptions or provide additions to the Construction Standards. Some paragraphs in the Construction Standards will not apply to this job.

Western’s Construction Standards, Standard Drawings, and Electrical Equipment Standards are available at http://www.wapa.gov/business/buys.htm.

Western Project Specifications and Construction Standards are explained in Standard 1 – General Requirements, Section 1.1.1, “Standards and Project Specifications”.

B. DESCRIPTION OF WORK:

Paragraphs “Description of Bidding Schedule Items” in Divisions – 1, 2, 3, 9, and 13 describe the work to be performed.

The work is located at Guernsey Rural Substation, which is about 5 miles west of Guernsey, Wyoming in Platte County. Refer to the location map shown on Drawing GW 0015.

The principal components of the work include the following:

1. SITEWORK:

a. Replacing and protecting existing gravel surfacing.

b. Removing and disposing of two (2) existing foundations.

2. CONCRETE:

a. Provide foundation for power transformer.

3. SUBSTATION ELECTRICAL:

a. Install Government-furnished power transformer. Requires travel to Sterling, Colorado and moving a 20 MVA power transformer from Sterling Substation to Guernsey Rural Substation.

b. Remove and dispose of existing power transformer and miscellaneous electrical material.

c. Furnish and install the substation grounding and electrical conduit systems.

d. Furnish and install power and control cables.

C. DESCRIPTION OF BIDDING SCHEDULE ITEM:

1. Bidding Schedule item “Mobilization and preparatory work” includes the following:

a. Performing mobilization and preparatory work in accordance with Section H and Section M of the contract clauses.

b. Prepare and submit a Construction Schedule and furnish a Safety and Health Program.

D. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK:

1. COMMENCEMENT AND COMPLETION: Begin work within 10-calendar days after date of receipt of Notice to Proceed, and complete all work within 180-calendar days from the date of receipt of such notice.

2. SUBMITTAL APPROVAL TIME: Except as otherwise provided for specific submittals, Western will require 20-calendar days for review of drawings or data submitted for approval.

3. COMMENCEMENT OF CONTROL WORK: Do not perform any outdoor equipment wiring until receipt of Government-furnished wiring diagrams. Western will furnish outdoor wiring and schematic diagrams no sooner than October 1, 2015, and no later than October 15, 2015.

Include these restrictions in the Construction Schedule.

4. OUTAGE RESTRICTIONS: Restrictions listed in the Construction Standard 1.

5. CONSTRUCTION SCHEDULE RESTRICTIONS: The following Construction Schedule restrictions shall apply:

a. The Contractor shall not work more than 60 hours in one calendar week without prior approval from the COR.

6. MAXIMUM AVAILABLE FAULT CURRENT: When protective ground leads are required, the protective ground leads shall be sized as defined below and shall meet the requirements of Standard 1 – General Requirements, Section 1.4 “Safety and Health” and the following:

a. The maximum available fault current in the 115-kV area is 4,138 amps and the X/R ratio is

3.6 prior to completing construction and 4,138 amps and the X/R ratio is 3.6 after completing construction.

b. A minimum of one (1) 1/0 AWG grounds shall be used in the 115-kV area.

c. The maximum available fault current in the 69-kV area is 1,128 amps and the X/R ratio is 24.1 prior to completing construction and 2,963 amps and the X/R ratio is 8.64 after completing construction.

d. A minimum of one 1/0 AWG grounds shall be used in the 69-kV area.

e. No protective ground lead shall be longer than 36-feet in length, unless approved by the

Contracting Officer’s Representative (COR). Resistance values given in Personal Protective Grounds Test Report shall be less than or equal to those allowed in

ASTM F 2249.

E. CONSTRUCTION SCHEDULE:

1. SUBMITTAL TIME: Prepare and Submit a Construction Schedule to the Contracting Officer (CO) within 10-calendar days after date of Notice to Proceed.

2. FORMAT AND DETAIL: Dates for each item of Government-furnished material shall be provided.

F. MATERIAL:

Furnish all material for completing the work, except for the Government-furnished power transformer.

G. RIGHTS-OF-WAY:

Orient construction methods and equipment to utilize Government-furnished rights-of-way, or obtain additional temporary access without additional cost to Western.

H. GEOLOGIC INVESTIGATIONS:

Geologic logs of subsurface explorations are unavailable. The Contractor may (at no additional cost to Western) determine the nature of material to be excavated, the difficulties of making and maintaining required excavations, and doing other work affected by geology and ground water elevations at the worksite.

I. ELECTRIC POWER FOR CONSTRUCTION PURPOSES:

Electric power up to a maximum of approximately 5-kVA for construction purposes will be available without cost. Source of supply is located at the receptacles throughout the substation. The Contractor may furnish power for his operations by other means at no additional cost to Western.

Power made available by Western will be delivered as single-phase, 60 Hz, AC, at approximately 120-240 V.

J. WATER FOR CONSTRUCTION PURPOSES:

Furnish water for construction purposes. Make arrangements for obtaining the water, and provide for conveying the water to the points of use.

K. EXPLOSIVES AND BLASTING:

Explosives shall not be used.

L. SUBMITTALS:

1. GENERAL: The Contractor shall furnish submittals via email as specified in the Construction Standards and this Project Specification. Submittals via email shall be in standard PDF or Electronic CAD “*.dwg” (AutoCAD 2010) formats. All submittals shall include the Western contract number (DE-WA000XXXX), Western project title, and Bidding Schedule Contract Line Item Number (CLIN) and applicable division number. Multiple CLIN’s on a single submittal are not permitted. A cover transmittal letter in Microsoft Word or PDF format shall be included with each email. Email submittals shall be delivered to: RMR-J5600-CS@wapa.gov.

2. SUBMITTAL RESPONSE: Western will return all submittals electronically with an “Approved” or “Not Approved” status with comments as appropriate to the email address where the submittal originated.

3. APPROVAL TIME: Approval time for submittals shall be in accordance with the

“Commencement, Prosecution, and Completion of Work” paragraph.

DIVISION 2 – SITEWORK

A. DESCRIPTION OF BIDDING SCHEDULE ITEM:

1. Bidding Schedule item “Sitework” includes the following:

a. Replacing and protecting existing gravel surfacing.

b. Providing a soil-applied herbicide where gravel surfacing is placed.

2. Bidding Schedule item “Demolition” includes the following:

a. Removing and disposing of the two (2) existing foundations “TRANSFORMER” and

“TAT1” as shown in the clouded region on Drawing GW 2200 (EI).

b. Backfilling the areas where foundations were removed with compacted structural backfill and providing a minimum of 6-inches of gravel surfacing over those areas where foundations were removed.

3. Bidding Schedule does not contain separate items for the following. Include these items in applicable Bidding Schedule items:

a. Excavations for foundations, structures, and trenches.

b. Providing gravelfills under concrete foundations as shown on the Drawings.

c. Disposing of Excavated Material: Material from excavations not suitable or required for earthwork shall be removed from the substation and access road right-of-way. The Contractor shall make arrangements required for disposal of waste material in an approved landfill.

DIVISION 3 – CONCRETE

A. GENERAL:

1. MATERIAL:

a. Cement: Type IIA cement.

b. Compressive Strength: 4000 psi at 28-days for substation concrete.

c. Water-Cement Ratio: Net water-cement ratio, exclusive of water absorbed by the aggregates, shall not exceed 0.45 by weight.

d. Type A and D water-reducing and retarding admixtures may be used if approved by the COR.

2. TEST FOR POTENTIAL REACTIVITY OF SAND AND COARSE AGGREGATE: Western may perform tests for potential reactivity for the sand and coarse aggregate to be used by the Contractor. If the tests determine the aggregate(s) to be unsuitable as a concrete aggregate, a suitable source shall be obtained by the Contractor.

3. CURING: Exposed, formed surfaces of concrete foundations shall be cured with water, resin-base curing compound without fugitive dye, or by covering with polyethylene film.

B. DESCRIPTION OF BIDDING SCHEDULE ITEM:

1. Bidding Schedule item “Concrete foundations” includes the following:

a. Earthwork, formwork, reinforcement, and material used in concrete, embed plates, curing, finishing, joints, gravel fills and other related work, and material needed to complete the concrete construction.

b. Concrete foundations for electrical equipment.

Measurement for quantities of concrete foundations will be made on the basis of concrete quantities as shown on Drawing GW 2300. Regardless of the concrete quantities actually placed, payment will be based on the quantities of concrete shown on the Drawing.

DIVISION 4 – SUBSTATION METALWORK

A. GENERAL:

1. MEASUREMENT: Measurement for quantities for Bidding Schedule items “Steel structures, welded (galvanized)”, will be made on lump sum basis.

a. The Contractor shall submit shop drawings to Western for approval.

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Steel platforms, welded (galvanized)” includes providing the following:

a. Equipment cabinet platforms as follows, including gratings.

(1) One (1) Type I for the 110/69-kV Transformer (KY1A), as shown on

Drawing GW 2928.

DIVISION 9 – SUBSTATION ELECTRICAL

A. GENERAL: Electrical equipment and material shall be as specified in Western’s “WAPA ES”

Standard Equipment Specifications, as shown on project drawings, and in accordance with NEMA, ANSI, IEEE, ICEA, ASTM, NEC, NESC, UL, and Federal specifications and standards as applicable.

Applicable requirements shall be met under the following service conditions:

Ambient Temperatures:

Maximum ........................................................................................... +40°C Minimum ............................................................................................. -40°C

Elevation:

Above Mean Sea Level .............................................................. 4,554-Feet

*ASCE-7 Wind Load:

Minimum Basic Wind Speed ............................................................ 90 MPH Importance Factor.................................................................................. 1.15

*IEEE 693 Seismic Qualification:

Performance Level................................................................................. Low

*Wind and seismic loads are nonsimultaneous.

B. DESCRIPTION OF BIDDING SCHEDULE ITEMS:

1. Bidding Schedule item “Power transformer, 110-kV, 20 MVA, three-phase (Government-furnished)” includes furnishing all equipment and material not furnished by Western and installing the following Government-furnished power transformer:

DESIGNATION (THREE-PHASE) KY1A

Manufacturer General Electric

Voltage Rating (kV) 110/69-12.47

Rating (MVA) 20/26.67/33.33

Oil (Gallons) 5,020

Total Weight (including oil) (LBS) 90,800

a. General: The Contractor shall be responsible for travel to Sterling Substation located near Sterling in Logan County, Colorado as shown on Drawing STG 0016, and transporting the existing 20 MVA General Electric transformer. The transformer is located on cribbing inside Sterling substation and needs to be disassembled prior to transport. The Contractor shall remove the surge arresters, bushings, and radiators and place them in crates with adequate protection for transport. The Contractor shall remove the oil from the transformer and prepare the transformer for transport, including providing an impact recorder mounted on the transformer. The Contractor shall transport the transformer and all components, including the insulating oil and spare parts to Guernsey Rural Substation.

The Contractor shall provide impact recorder readings, analyze and report the results of the impact recorder to the COR. The Contractor shall either confirm that no damage to the transformer occurred after receipt of the equipment at Guernsey Rural Substation or the Contractor will provide a detailed report of the damage sustained during transportation.

The Contractor shall then reassemble the transformer as required, fill and process the transformer oil as needed, test, and verify the transformer is ready for normal commercial operation. The Contractor shall provide all personnel, including manufacturer certified erecting engineer, all equipment including cranes, rigging equipment, tractor trailers, truck transport, oil processing, test equipment, make railroad transport agreements, highway and road certificates as required, and all other material, equipment, or personnel as needed to complete the work. The Contractor shall be responsible for any and all damage of the transformer as a result of disassembly, loading, transporting, unloading, and reassembly. The Contractor shall be responsible for all permits, fees, and route selection for this move. The transformer shall not be tilted from level in any direction more than 15 degrees. Any road improvements, grading, etc. required to safely transport the transformer shall be the responsibility of the Contractor.

b. Pre-Disassembly Testing of the Transformer: The following tests shall be made by the Contractor prior to disassembly and removal of oil from the transformer and will be used as a baseline to determine if any damage occurs to the transformer or accessories during shipment:

(1) SFRA Test: Utilizing the Doble SFRA M-5100/M-5200 test equipment, duplicate measurements shall be made on each of the transformer windings and these results shall be compared to those values measured prior to the transformer being shipped.

A paper copy of the SFRA traces and a CD with the data in Doble file format shall be submitted for review and acceptance by Western. The contractor shall notify the COR two weeks prior to completing this test and verify that the correct tap changer position.

(2) Doble Testing utilizing an M4K Test Set:

(a) Overall Power Factor Tests: Use a Doble M4000 Insulation Power Factor tester only. Results shall be downloaded directly from the M4000 in .xml format and given to the WAPA representative. A hardcopy of the results shall also be provided.

(b) Excitation Tests (Duplicating the final factory tests or most recent test prior to shipping):

1) Duplicate the final factory tests or most recent testing prior to shipping.

2) Provide testing on all transformer tap positions.

(c) Bushing Tests (On all liquid filled bushings):

1) C1 and C2 Measurements.

(d) Surge Arrester Tests.

(3) Insulating Oil Testing:

(a) Sufficient samples shall be taken from the main tank.

(b) All oil tests to utilize WESTERNs “Independent Laboratory”, as specified in the “Site Specific Requirements”, to obtain, sample bottles(s) and syringe(s).

1) All oil samples of sufficient quantity shall be taken from the transformer with the following “oil quality” tests made on the sample.

TEST LIMIT STANDARD

Dielectric Break => 30 ASTM D 877

TEST LIMIT STANDARD

Down Strength Water ppm <= 20 ASTM D 1533 Visual Clear ASTM D 1524 Sediment Color <= 3 ASTM D 1500 Acidity <0.2 ASTM D 974 Specific Gravity 0.86-0.91 ASTM D 1298 Refractive Index 1.479-1.495 ASTM D 1807 Viscosity <12 ASTM D 445

IFT >30 ASTM D 971

Power Factor ASTM D 924

@ 25⁰C <=0.15 @ 100⁰C <=1.5

2) An oil sample taken with a syringe shall be taken from the transformer with the following “dissolved gas” analysis made on the sample.

TEST

Hydrogen (H2) Oxygen (O2) Nitrogen (N2) Methane (CH4) Carbon Monoxide (CO) Carbon Dioxide (CO2) Ethylene (C2H4) Ethane (C2H6) Acetylene (C2H2) Total Combustible Gases Total Gas (%V/V)

3) Oil Test for Corrosive Sulfur: (a) For transformers shipped with insulating oil, the factory shall perform a test in accordance with ASTM D 1275 (B) for corrosive sulfur and the test result shall be included in the final factory test report. (b) For transformers shipped without insulating oil, the final field oil tests shall include a test in accordance with ASTM D 1275 (B) for corrosive sulfur and the test result shall be included in the final field test report.

(c) All tests are to be conducted by a WESTERN approved laboratory with a written test report of the test results submitted.

(d) Oil sample to be sent to a qualified test laboratory (Oil quality and Dissolved Gas Analysis (DGA) testing).

(4) Provide a formal written report of pre-disassembly test results to the COR.

c. Transformer Disassembly: The work shall be accomplished under the supervision of a manufacturer certified erecting engineer and shall include the following:

(1) Inspect transformer and furnish report of any leaks or problems found to the COR.

(2) Drain the oil from the transformer into Contractor provided oil tanker trucks.

(3) Remove the surge arresters, bushings and radiators.

(4) All conduits, piping, and accessories normally removed from a transformer for shipment shall be removed from this unit by the Contractor.

(5) Seal and pressurize the transformer with approximately 3 pounds of dry air. Once the transformer is filled with dry air a pressure test is required. The transformer must maintain a positive pressure of 3 pounds for a minimum of 24-hours.

(6) Box and crate any disassembled or spare parts.

(7) The transformer control cabinet shall be padlocked by the Contractor once the transformer is ready for moving.

d. Transport of Transformer Oil and Transformer Components: The work shall be accomplished under the supervision of a manufacturer certified erecting engineer and shall include the following:

(1) The Contractor shall transport transformer oil by tank trucks from Sterling Substation in Colorado to Guersney Rural Substation in Wyoming. The oil in the transformer at Sterling Substation has been recently tested at less than 1 part per million (PPM) polychlorinated biphenyl (PCB). To ensure that no PCB contamination is introduced during transport, the Contractor shall provide to the COR, prior to transport, PCB test result indicating that the tank trucks used to transport the transformer oil are all PCB free.

(2) Load and transport the transformer from Sterling Substation to Guernsey Rural

Substation. If the transportation system is an over the road type, then it shall be approved by the states of Colorado and Wyoming. If transported by rail-car, the rail-car shall be specifically designed for transformer transport.

(3) Install an impact recorder on the transformer and provide recorder data for the entire loading, transportation, and unloading operation. The Contractor shall analyze the results and prepare a certified report. The report shall be submitted to the COR within 10-days after off-loading the transformer.

(4) Prior to off-loading the transformer perform:

(a) Core Insulation Resistance Tests: Measure the insulation resistance values utilizing 1000 VDC for 1-minute.

1) Main core ground.

2) Auxiliary core ground(s).

3) Compare field measurements to factory final test values or most recent values prior to shipment. Minimum Acceptable Value: 1000 meg ohms.

(b) Dew Point Measurement of Internal Atmosphere of the transformer.

1) Compare to factory measurement or reading prior to shipment.

(5) Offload the transformer at Guernsey Rural Substation on the concrete pad provided by the Contractor and align as directed by Western’s representative.

(6) Transport the transformer accessories, including spare parts from Sterling Substation to Guernsey Rural Substation. Spare parts furnished with the transformer may include but are not limited to the following:

(a) One (1) bushing of each voltage class used on the transformer.

(b) One (1) complete set of gaskets.

(c) One (1) complete extra relay and contactor of each type used on the transformer.

(d) One (1) cooling fan and motor assembly.

(e) One (1) complete oil pump and motor assembly.

e. Reassembly of the Transformer: The work shall be completed in accordance with the equipment manufacturer’s instruction books and shall be accomplished under the supervision of a manufacturer certified erecting engineer and include the following:

(1) Mount all bushing turrets and reconnect current transformer wiring.

(2) Furnish and install new gaskets.

(3) Install bushings.

(4) Hang and brace radiator headers and associated radiators.

(5) Mount surge arresters.

(6) Mount miscellaneous items removed for shipment.

(7) Place all spare parts in the locations directed by the COR.

(8) The Contractor, upon assembly, shall fill the transformer with 3 PSI dry air followed by a pressure test. The transformer must maintain a positive pressure of 3 PSI for a minimum of 24-hours.

f. Oil Filling of the Transformer: The work shall be completed in accordance with the equipment manufacturer’s instruction books and shall be accomplished under the guidance of a manufacturer certified erecting engineer and include the following:

(1) Follow the original filling procedures.

(2) Establish a dew point.

(3) Provide oil processing and vacuum filling equipment as required.

(4) Apply vacuum for at least 36-hours.

(5) Vacuum fill in accordance with manufacture specifications (Oil temperature to be no less than 50 degrees Celsius).

(6) Provide additional oil filtering if the dielectric strength does not exceed 30-kV.

(7) The Contractor shall be responsible for repairing any leaks at the Contractor’s expense. Repairs will be directed by a Western representative.

g. Testing of the Transformer: The work shall be accomplished under the supervision of an erecting engineer and include the following tests and data:

(1) The following tests shall be made by the Contractor after the transformer has been completely assembled and oil filled.

(a) SFRA Test: Utilizing the Doble SFRA M-5100/M-5200 test equipment, duplicate measurements shall be made on each of the transformer windings and these results shall be compared to those values measured prior to the transformer being shipped. A paper copy of the SFRA traces and a CD with the data in Doble file format shall be submitted for review and acceptance by Western. These SFRA tests shall compare to the pre-disassembly SFRA test results. The contractor shall ensure that this SFRA test is complete with the same tap changer position as the pre-disassembly SFRA test.

(b) Short Circuit Impedance: Perform a short circuit impedance test using the

Doble M4100 and M4110. Test values should be within +/- 3 percent of nameplate. In addition to the test report, a CD with the data in Doble file format shall be submitted for review.

(c) Turns Ratio Testing (TTR):

1) All taps of the transformer that is listed on the final factory test report are to be tested and compared to factory and previous test results.

2) Perform test on all transformer taps positions.

(d) Winding Resistance Measurements: Duplicate resistance measurements of each winding tested during the final factory testing or most recent test reports prior to shipping are to be measured for comparison purposes:

1) Compare measurements between the different phases.

2) Compare measurements to the factory test report, (utilizing the standard temperature correction factors).

(2) Doble Testing utilizing an M4K Test Set:

(a) Overall Power Factor Tests: Use a Doble M4000 Insulation Power Factor tester only. Results shall be downloaded directly from the M4000 in .xml format and given to the WAPA representative. A hardcopy of the results shall also be provided.

(b) Excitation Tests (Duplicating the final factory tests or most recent test prior to shipping):

1) Duplicate the final factory tests or most recent testing prior to shipping.

2) Provide testing on all transformer tap positions.

(c) Bushing Tests (On all liquid filled bushings):

1) C1 and C2 Measurements.

(d) Surge Arrester Tests.

(3) Insulation Resistance Tests:

(a) Measure the insulation resistance values utilizing 2500 VDC for 1-minute:

1) HV to other windings plus ground.

2) LV to other windings plus ground.

3) TV, if present, to other windings plus ground.

4) All windings to ground.

(4) Insulating Oil Testing:

(a) Sufficient samples shall be taken from the main tank.

(b) All oil tests to utilize WESTERNs “Independent Laboratory”, as specified in the “Site Specific Requirements”, to obtain, sample bottles(s) and syringe(s).

1) All oil samples of sufficient quantity shall be taken from the transformer with the following “oil quality” tests made on the sample.

TEST LIMIT STANDARD

Dielectric Break Down Strength => 30 ASTM D 877

Water ppm <= 20 ASTM D 1533 Visual Clear ASTM D 1524 Sediment Color <= 3 ASTM D 1500 Acidity <0.2 ASTM D 974 Specific Gravity 0.86-0.91 ASTM D 1298 Refractive Index 1.479-1.495 ASTM D 1807 Viscosity <12 ASTM D 445

IFT >30 ASTM D 971

Power Factor ASTM D 924

@ 25⁰C <=0.15 @ 100⁰C <=1.5

2) An oil sample taken with a syringe shall be taken from the transformer with the following “dissolved gas” analysis made on the sample.

TEST

Hydrogen (H2) Oxygen (O2) Nitrogen (N2) Methane (CH4) Carbon Monoxide (CO) Carbon Dioxide (CO2) Ethylene (C2H4) Ethane (C2H6) Acetylene (C2H2) Total Combustible Gases Total Gas (%V/V)

3) Oil Test for Corrosive Sulfur: (a) For transformers shipped with insulating oil, the factory shall perform a test in accordance with ASTM D 1275 (B) for corrosive sulfur and the test result shall be included in the final factory test report. (b) For transformers shipped without insulating oil, the final field oil tests shall include a test in accordance with ASTM D 1275 (B) for corrosive sulfur and the test result shall be included in the final field test report.

(c) All tests are to be conducted by WESTERN’s independent laboratory with a written test report of the test results submitted.

(d) Oil sample to be sent to a qualified test laboratory (Oil quality and Dissolved Gas Analysis (DGA) testing).

(5) Bushing Current Tests (Made on “all” BCTs mounted in the transformer):

(a) Ratios (Made all five primary taps).

(b) Polarity.

(c) Plot the Saturation Curve (Minimum of 5 points, if utilizing a manual plotting method).

(d) Insulation to ground testing, utilizing 1000 VDC on all five primary taps leads at the control cabinet shorting block.

1) Record insulation resistance values.

(6) Confirm all transformer alarm, control, protection and trip functions operate correctly. Device Check Out:

(a) Manual Contact Pickup Tests:

1) Liquid level gauge(s) contact operation to control cabinet terminal block.

2) Temperature gauge(s) contact operation to control cabinet terminal block.

3) Bucholtz relay contact operation (If present).

4) Sudden pressure relay contact operation tested per manufacturer instruction manual, including seal-in circuit in transformer control cabinet.

5) Mechanical relief device calibration and operation check.

6) Verify calibration of temperature gauges utilizing an oil bath temperature calibrator checking set points.

7) Operational check of all fans.

(7) Provide a formal written report of field test results and as a PDF format file.

2. Bidding Schedule item “Removal and disposal of existing power transformer” includes removal and disposal of the following existing power transformer, including auxiliary oil tanks, located at Guernsey Rural Substation:

DESIGNATION KY1A

Manufacturer The Standard Transformer Co.

Voltage Rating (kV) 110-69

Rating (MVA) 12/16/20

Oil (Gallons) 4,650

Total Weight (including oil) (LBS) 102,650

The Contractor shall also remove and dispose of the existing power and control cables, ACSR conductors and rigid metal conduits. The oil in the transformer has been recently tested at less than 1 part per million (PPM) polychlorinated biphenyl (PCB).

Western will be responsible for removing the low-side (69-kV) bushing prior to contractor removal of transformer.

3. Bidding Schedule item “Associated electrical equipment and material” includes furnishing and installing the following substation installations as shown on the Drawings:

a. Insulated Conductors: Includes providing a 3/c No. 8 AWG power cable to the transformer. The Contractor shall terminate both ends of the cable.

b. Grounding System: Includes providing equipment, material, and services required to complete the substation grounding system as shown on the Drawings. Unless otherwise specified on the Drawings, splices, crosses, tees, and other fittings used on the grounding system may be compression type (DMC Power Swage System or equal).

c. Electrical Conduit System: Includes providing equipment, material, and services required to complete the embedded and exposed conduit as shown on the Drawings.

d. Outdoor Bus System: Includes providing equipment, material, and services required to complete the outdoor rigid and jumper buses as shown on the Drawings. Unless otherwise specified on the Drawings, splices, elbows, pad type terminal connectors, and other fittings used on rigid or cable buses may be compression type (DMC Power Swage System or equal).

e. AC Distribution Panel: Includes replacing one (1) 30A, 2-pole molded case circuit breaker with a 40A, 2-pole molded case circuit breaker.

4. Bidding Schedule items “Furnishing 5/c No. 10 AWG control cable” and “Furnishing 12/c No. 10 AWG control cable” include furnishing 5/c No. 10 and 12/c No. 10 AWG control cable, according to GW T610; complete wiring from outdoor equipment to the control building entrance plus the diagonal length of the building.

5. Bidding Schedule items “Installing 5/c No. 10 AWG control cable” and “Installing 12/c

No. 10 AWG control cable” include installing 5/c No. 10 and 12/c No. 10 AWG control cable, respectively.

a. Each control cable shall be terminated by the Contractor at the outdoor equipment in accordance with Western drawings. Western will terminate the control cables at the control panel.

DIVISION 13 – ENVIRONMENTAL QUALITY PROTECTION

A. DESCRIPTION:

1. ENVIRONMENTAL QUALITY PROTECTION: The Bidding Schedule does not contain separate items for the following. Include these items in the applicable Bidding Schedule items.

a. Required Submittals, Reports, and Plans (Section 13.1)

b. Contractor Furnished Data (Section 13.2)

c. Environmental Requirements (Section 13.3)

d. Preservation of Cultural and Paleontological Resources (Section 13.5)

e. Noxious Weed Control (Section 13.6)

f. Recycled Material Quantities (See Section 13.7)

g. Use of Recovered Material and Biobased Material Products (Section 13.8)

h. Disposal of Waste Material (Section 13.9)

i. Contractor’s Liability for Regulated Material Incidents (Section 13.10)

j. Pollutant Spill Prevention, Notification, and Cleanup (Section 13.11)

k. Prevention of Air-Pollution (Section 13.14)

l. Prevention of Water Pollution (Section 13.17)

m. Testing, Draining, Removal, and Disposal of Oil-Filled Electrical Equipment

(Section 13.18)

n. Removal of Oil-Contaminated Material (Section 13.19)

o. Conservation of Biological Resources (Section 13.20)

Message from the Administrator

At Western, we show our commitment to safety every day through the actions we take, the training we offer and the work conditions we provide. We expect the same commitment to safety from each of our contractors who provide products or services to Western. In performing work for Western, all contractors must make the right decisions to ensure that the work environment is as safe as possible.

Our safety program is based on four points:

Safety procedures or common sense must be applied by each

Federal and contract employee. Safety should not be set aside to meet a project schedule or for personal convenience.

Employees and contractors must believe that they have the right and the responsibility to identify and take action to reduce, if not eliminate, hazardous work environments and hazardous work practices.

Managers and supervisors must lead by example and execute their responsibility to ensure each job is accomplished in a safe and healthy way.

Safety is a personal responsibility. Each individual makes the decision on what action to take to accomplish a task.

By integrating these principles into every task we take, together we can ensure Western is a safe place to work.

Mark A. Gabriel Administrator