W9128F20R0042 2of2 GSU Transformer Bushing Repairs at Oahe Dam SD Specs.pdf

SPECIFICATIONS

(Service Contract)

Solicitation Number W9128F20R0042

Generator Step-Up Transformer Bushing Oahe Dam, SD

April 2020

US Army Corps of Engineers Omaha District

Generator Step-Up Transformer Bushing Oahe Dam, SD

PROJECT TABLE OF CONTENTS

PERFORMANCE WORK STATEMENT (PWS)

DIVISION 26 - ELECTRICAL

26 11 14.00 10 STEP-UP TRANSFORMER BUSHING REPLACEMENT AND MISCELLANEOUS

TESTING AND REPAIRS

SUMBITTAL REGISTER

TRANSFORMER DRAWINGS (FIO)

GF/CI 196 KV BUSHING DATA

OAHE GENERATOR STEP UP TRANSFORMER OIL TEST

-- End of Project Table of Contents --

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PERFORMANCE WORK STATEMENT (PWS)

Oahe Generator Step-up Transformer Bushing Replacement and Miscellaneous Testing and Repairs

1.0 General Information.

1.1 Background. The purpose of this project is to replace the generator step-up (GSU) transformer bushings at Oahe Power Plant, South Dakota. There are four GSU transformers located outdoors in the transformer vaults on the draft tube deck on the south side of the powerhouse at elevation 1456. Transformer #1 consists of one three-phase transformer rated 103 MVA, 13.8 kV - 115 kV; Transformer Banks #2, #3, and #4 are similar and consist of three single-phase transformers each rated 66.7 MVA, 13.8 kV - 132.8/230 kV.

The high side transformer bushings connect to aerial conductors for connection to transmission lines which route to the switchyard for transmission onto the electrical distribution network. There are a total of 4 transformers and 10 transformer tanks.

Reference attached technical specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS for more detailed information.

1.2 Scope of Work. This is a non-personal services contract to provide Step-Up Transformer Bushing Replacement and Miscellaneous Testing and Repairs at Oahe Hydroelectric power plant, South Dakota. Project requirements include the following items:

1) Perform pre-work electrical testing on Transformer #1, and Transformer Banks #2, #3, and #4.

2) Drain and store transformer oil from Transformer #1, and Transformer Banks #2, #3, and #4.

3) Test and install Government Furnished 230 kV high voltage bushings on Transformer Banks #2, #3, and #4.

(Quantity of 9 bushings installed.)

4) Furnish, test, and install 115 kV high voltage bushings for Transformer #1.

5) Furnish, test, and install 15 kV low voltage bushings for Transformer #1, and Transformer Banks #2, #3, and #4.

(Quantity of 21 bushings installed.)

6) Furnish, test, and install high voltage neutral bushings on Transformer #1, and Transformer Banks #2, #3, and #4.

7) Replace gaskets on all bushings, leaking temperature sensors, and all covers that are removed during work on the transformers with new gasket material as specified.

8) Test, process (filter), and hot oil vacuum fill the insulating oil Transformer #1, and Transformer Banks #2, #3, and #4.

9) Recharge the nitrogen in Transformer #1, and Transformer Banks #2, #3, and #4.

10) Perform pre-work and post-work electrical testing and insulating oil testing on Transformer #1, and Transformer Banks #2, #3, and #4.

11) All work on each transformer shall be performed during one outage per transformer bank.

Reference attached technical specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS for more detailed information and requirements. The Government shall not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers shall be accountable solely to the Contractor who, in turn is responsible to the Government. This is a fixed priced, performance based service contract where the Government defines and measures desired outcomes, while Contractor methods are generally not constrained or directed.

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1.3 Period of Performance. The period of performance shall be 545 days from award. Work shall be completed with mutually agreeable dates coordinated between the Government and the Contractor. Permissible outage dates are September thru November of 2020; March thru May of 2021 and September thru November of 2021. The Contractor shall efficiently execute work to minimize the outage periods. All work will be done sequentially requiring no more than two mobilizations and if possible concurrent with the Government’s scheduled outages. Only one transformer bank shall be under an outage at a time, concurrent outages will not be allowed. A minimum 18 hour transformer settling period shall be required before re-energizing the transformer.

*Note: The Contractor is not required to perform any services during the inactive period of performance.

1.4 Contractor Personnel

1.4.1 The Contractor shall perform all work under this contract using his or her own forces except as provided in Paragraph 1.3.2 Subcontracting. Employees who perform this work shall be qualified persons on the Contractor’s own payroll.

1.4.2 Subcontracting. The Contractor shall not subcontract any work without written approval of the Contracting Officer. Compliance with the provisions of this contract by subcontractors shall be the responsibility of the Contractor.

1.5 Quality Control

1.5.1 The Contractor shall designate, in writing, an employee who shall serve as the contact for matters involving quality and performance or nonperformance of the required work stated in this PWS. The employee(s) shall be qualified and fully competent with full authority to act for, and on behalf of, the Contractor as necessary to insure that the required work is performed in accordance with the standards contained herein. The Contractor shall furnish the above written designation to the Contracting Officer’s Representative (COR) no later than the first day of work.

The Contractor shall include the name(s), address(s), and telephone number(s) of the responsible individual(s).

1.5.2 The Contracting Officer reserves the right to disapprove any individual whom he considers incompetent to perform the work required. The Contracting Officer will provide a written notice of any disapproval to the Contractor.

1.6 Quality Assurance. The Government will use a Quality Assurance Surveillance Plan (QASP) to ensure that the Contractor is performing the services required by this PWS in an acceptable manner. The Government may use Quality Assurance Evaluators (QAE(s)) to provide assistance with the quality assurance methods.

1.6.1 The Government has the right to inspect all services called for by the contract, to the extent practicable at all times and places during the term of the contract. The Government shall perform inspections in a manner that will not delay the work.

1.6.2 If any of the services do not conform to contract requirements, the Government may require the Contractor to perform the services in conformity with contract requirements and at no increase in cost. If the contract requirements are not met after a second attempt the Government may (1) require the Contractor to take necessary action to ensure that future performance conforms to contract requirements and (2) reduce the contract price to reflect the reduced value of the services performed.

1.6.2.1 Upon verification of a validated customer complaint or corrective action report, the COR will notify the Contractor that they are required to re-perform specific services.

1.6.3 The Government may take action, if the Contractor fails to perform the services again or to take the necessary action to ensure future performance is in conformity with the contract requirements. The Government may (1) by contract, or otherwise, perform the services and charge to the Contractor any cost incurred by the Government that related to the performance of such service or (2) terminate the contract in whole or in part

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1.6.4 The Contractor is responsible to replace/repair any damage to Government property due to negligence, at his or her own cost. The Government may take action, if the Contractor fails to replace/repair any damage to Government property. The Government may (1) by contract, or otherwise, replace/repair damaged Government property and charge to the Contractor any cost incurred by the Government to replace/repair any damage.

1.7 Hours of Operation. The Contractor is responsible for conducting business, between the hours of 7:00 A.M.

and 5:30 P.M., Monday thru Friday except Federal holidays or when the Government facility is closed due to local or national emergencies, administrative closings, or similar Government directed facility closings. The Government will not provide for outage or clearance support on Fridays. The Contractor must maintain an adequate workforce for the uninterrupted performance of all tasks defined within this PWS when the Government facility is not closed for the above reasons. When hiring personnel, the Contractor shall keep in mind that the stability and continuity of the workforce are essential.

1.8 Pre-Work Meeting. Prior to commencing any activities, the Contractor shall arrange a Pre-work Meeting with the COR. The Meeting shall discuss the work requirements, scheduling, submittal process, review of the Activity Hazard Analysis (AHA), and Abbreviated Accident Prevention Plan (AAP). At least one (1) week prior to commencing work, the Contractor shall coordinate their proposed work schedule with the COR.

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1.9. Submittals.

1.9.1 Required Submittals. Prior to commencement of services, the Contractor shall submit the following documents to the COR for review and approval:

a. Activity Hazard Analysis (AHA);

b. Abbreviated Accident Prevention Plan (APP);

c. List of who will perform work on this contract;

d. Proof of Insurance for Contractors and Subcontractor’s; The Contractor shall show certificates or other written evidence of reliable insurance coverage and assets to indemnify against long-term liabilities and/or catastrophic occurrences as follows:

aa. Environmental Impairment Expense - $1,000,000 per occurrence covering sudden and accidental spills of hazardous waste material from the transport vehicles.

bb. Comprehensive General Liability - $1,000,000 combined single limit per occurrence.

cc. Comprehensive Automobile Liability - $1,000,000 combined single limit per occurrence.

dd. Contractors Pollution Liability - $1,000,000 per occurrence covering sudden and accidental spills at the Oahe Power plant.

ee. Pollution Legal Liability - $1,000,000 per occurrence covering non-sudden, sudden and accidental environmental pollution from the Contract site.

ff. Workman's Compensation and Employer's Liability Insurance -$100,000.

e. Submit documentation of the qualifications of the Services Supervisor.

f. Submit a plan for Spill Prevention and Spill Countermeasures, including clean-up procedures.

g. Reference attached technical specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER

BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS, paragraph 1.5 for technical submittal requirements.

1.9.2 Submittal Form. The attached submittal form (ENG Form 4025) shall be used for transmitting the submittal.

This form may be reproduced by the Contractor and shall be properly executed by filling out all the heading blank spaces and identifying each time submitted. Special care should be exercised to ensure proper listing of the specification paragraph and/or sheet number of the contract drawings pertinent to the date submitted for each item.

The Contractor shall provide copies for each submittal to the locations stated below.

1.9.3 Means of Approvals. Action Codes will be as indicated on the back of ENG Form 4025. The Contracting Officer’s Representative will mark an Action Code on each submitted ENG Form 4025 prior to returning a copy to the Contractor. The approval of a submittal by the Contracting Officer shall not be construed as a complete check, but will indicate only that the general method of prosecution and detailing is satisfactory. Approval will not release the Contractor of the responsibility for any error that may exist, as the Contractor is responsible for satisfactory prosecution and detailing of all work.

1.9.4 When Not Approved. The Contractor shall make all corrections required by the Contracting Officer’s Representative and promptly furnish a corrected submittal in the form and number of copies as specified in the initial submittal.

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1.9.5 Submittal Delivery. The Contractor shall provide a completed copy of ENG Form 4025 with 3 copies of each submitted item to the Contracting Officer’s Representative at the Oahe Project.

U.S. Army Corps of Engineers Oahe Project Attn: Kris Cleveland 28563 Powerhouse Rd. Rm. 105 Pierre, SD 57501

Two copies of all submittals shall be submitted to the following address:

Attn: Lucas Kirkpatrick (MS: OD-SM)

U.S. Army Corps of Engineers 1616 Capitol Ave Omaha, NE 68102

1.10 Standards and Regulations. The Contractor shall perform to the standards in the contract and comply with all Local, State, and Federal Regulations during the services performed. The Contractor is responsible for ascertaining the extent to which these regulations affect the operations resulting from this contract. The Contractor shall comply will all applicable regulations. Applicable regulations include, but are not limited to the following:

a. Code of Federal Regulations (CFR), Title 36, Chapter III, Part 327, Rules and Regulations Governing Public Use on Corps of Engineers Water Resource Development Projects EP 1165-2-316 (http://www.publications.usace.army.mil/Portals/76/Publications/EngineerPamphlets/EP_1165-2- 316.pdf?ver=2013-08-22-104526-670);

b. Engineering Manual (EM) 385-1-1 (USACE – Safety and Health Requirements Manual), dated November 2014; http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf;

c. Occupational Safety and Health Standard (29 CFR 1910) regulations related to the Management and Control of Hazardous Wastes;

d. EPA - Environmental Protection Agency Regulations for the Control and Disposal of PCB Contaminant Waste;

e. EPA Policy Statement on residual PCB's in processed liquids and solids;

f. EPA Policy Statement on disposal methods for PCB's in sludge;

g. RCRA - Resources Conservation and Recovery Act (Primarily 40 CFR 268);

h. TSCA - Toxic Substances and Control Act (Primarily 40 CFR 761);

i. DOT - Department of Transportation Regulations for the Transportation of Toxic Wastes;

j. CERCLA-Comprehensive Environmental Response, Compensation, and Liability Act of 1980

(SUPERFUND);

k. CWA - Clean Water Act of 1972;

l. Safe Drinking Water Act of 1974;

m. All other applicable Federal, State, Country and City codes, laws, standards and regulations;

n. Reference attached technical specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER

BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS, paragraph 1.3 for technical standards and regulations.

1.10.1 Activity Hazard Analysis (AHA). The Contractor shall prepare the AHA in accordance with Paragraph 01.A.14 or 01.A.15 of the EM 385-1-1. If using Paragraph 01.A.15, prepare the AHA IAW Figure 1-2.

Note: Contractors and other individual employer’s typically use Job Safety Analyses (JSAs), Job Hazard Analyses (JHAs), or similar Risk Management assessment tools. The Government considers equivalent to, and acceptable substitutes for, the USACE’s AHA provided the data collected is the same as that required by the AHA, commensurate with the type of services the Contractor is performing.

1.10.2 Abbreviated Accident Prevention Plan (APP). EM 385-1-1 in its entirety may be too complex for the type of work performed under these contracts; Contractors may reference Appendix A, for abbreviated Accident Prevention Plan (APP). The Contractor shall only need to submit items in Appendix A that are pertinent to the

PWS Page 6 contract. The Contractor shall use a qualified person to prepare the site-specific abbreviated Accident Prevention Plan (APP). The Contractor shall prepare the APP in accordance with the format and requirements of the EM 385-1- 1 and supplemented herein. The Contractor shall sign and submit the APP for approval prior to the start of work onsite.

1.11 Physical Security

1.11.1 The Contractor shall be responsible for safeguarding all Government facilities, property, and materials provided for Contractor use. The Contractor shall secure at all times all Government facilities, property, and materials. Specific security conditions may change based on threats to national defense, and based on the risk of specific facilities to these threats. The Contractor shall abide by these changing conditions at all times, as applicable.

1.11.2 Key Control. The Contractor shall ensure all keys issued by the Government are not lost, stolen, duplicated, or used by unauthorized persons.

1.11.2.1 The Contractor shall immediately report to the COR any occurrences of lost or stolen keys.

1.11.2.2 In the event keys, other than master keys are lost or stolen, the Contractor may be required, upon written direction of the COR, to re-key or replace the affected lock or locks without cost to the Government. The Government may, however, at its option, replace the affected lock or locks or perform re-keying and deduct the cost of such from the monthly payment due the Contractor. If a master key is lost or stolen, the Government may need to replace all locks and keys for that system. The Government will deduct the total cost to replace the locks and keys from the Contractor’s monthly invoice.

1.11.2.3 The Contractor shall prohibit the use of keys issued by the Government by any persons other than the Contractor’s employees. The Contractor shall not facilitate access of secured areas to persons other than Contractor personnel or subcontractors engaged in performance of contract work requirements.

1.12 Antiterrorism/Operation Security Requirements

1. � �AT Level I Training All Contractor employees, to include subcontractor employees, requiring access to Army installations, facilities and controlled access areas shall complete AT Level I awareness training within 30 calendar days prior to mobilization. The Contractor shall submit certificates of completion and memo listing names of each affected Contractor employee and subcontractor employee who took the training on the date listed on the submitted certificate, to the COR or to the contracting officer, if a COR is not assigned, within 5 calendar days after completion of training by all employees and subcontractor personnel (submittal: <SUB>AT Level I Training Sign In Sheets</SUB>). Any following trainings documented via memo shall require at least one formal certificate matching the dates listed on the memo.

AT Level I awareness training is available at the following website:

https://jko.jten.mil/courses/atl1/launch.html.

2. � �. Access and General Protection/Security Policy and Procedures All Contractor and all associated sub-contractors employees shall comply with applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative). The Contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services or Security Office. Contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in Contractor security matters or processes.

2.1 Submit a complete, updated and signed, list of all Contractor and subcontractor personnel, including their titles and intended working hours, who will be working on site prior to start of work. This listing shall be revised and resubmitted when personnel changes occur. (SUBMITTAL FIO)

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2.2 � �Personnel Risk Assessment A minimum of seven days prior to engaging in work submit, to the CO or Project POC, a Personnel Risk Assessment (PRA) for each employee requiring authorized unescorted access to the Jobsite. The Contractor employee will only be allowed authorized unescorted

� �physical access after the PRA is shown to and approved by the Government. 2.3 Authorized � �Unescorted Access Requirements Perform a PRA on all Contractor personnel that require authorized unescorted access to the Jobsite. Costs associated with the execution of the PRA shall be at � �the expense of the Contractor. The content of the PRA is defined by the requirements as follows:

a. Criminal Check - Obtain a criminal background check, completed within the last seven years, on all Contractor personnel that require authorized unescorted access to the Jobsite. A minimum of a 7-year criminal background check with the state patrol office shall be performed from all states of residence and employment, for the past seven years. The Project Security Officer through the Contacting Officer will approve, disapprove, or revoke authorized unescorted access to the Jobsite as a result of the seven-

� �year background check.

b. Identity Verification - Contractor employees shall provide positive verification of individual identity prior to authorized unescorted access to the Jobsite. Acceptable forms of identity verification are documents issued by a federal Government agency that include: the individual's photograph, name, and date of birth, such as a passport or military identification (ID) card. Additionally, a state issued driver's

� �license or ID card is acceptable for identity verification.

c. The Criminal Check and Identity Verification shall be updated at least every seven years for each

� �employee requiring authorized unescorted access to the Jobsite.

d. Escort Requirements - Contractor personnel not cleared for authorized access to the Jobsite may be escorted by Government or Contractor personnel that have authorized unescorted access to the Jobsite.

All costs related to the escorting of non-cleared personnel shall be at the expense of the Contractor.

Additional burden shall not be placed upon the Government to provide these escorts. Prior to access, coordination with the Project Security Officer is required, including but not limited to:

(1) Verification of identity with photo identification �(2) Name of escorting individual and verification of unescorted status

(3) Time of �entry into the Jobsite

(4) Time exiting the Jobsite.

3. Not Used

4. iWATCH and/or CorpsWatch Training The Contractor and all associated subcontractors shall brief all employees on the local iWATCH, Corps Watch, or See Something, Say Something program (training standards provided by the requiring activity ATO). This locally developed training will be used to inform employees of the types of behavior to watch for and instruct employees to report suspicious activity to the COR. This training shall be completed within 10 days prior to mobilization and within 30 calendar days of new employees commencing performance with the results reported to the COR. (submittal: iWATCH and/or CorpsWatch Training Sign In Sheets).http://www.myarmyonesource.com/cmsreso �urces/Army%20OneSource/Media/Videos/ Family%2

� �0Programs%20and%20Services/iWatch_Program/iWATCH%2060_4streaming.wmv

5. And 6 NOT USED.

7. OPSEC Training All new Contractor employees will complete Level I OPSEC training within 30 calendar days prior to mobilization. Additionally, all Contractor employees must complete annual OPSEC awareness training. (submittal: OPSEC Training Sign In Sheets) https://securityawareness.usalearning.gov/opsec/

8. thru 12 NOT USED

13. Will be Escorted in Areas Where They May be Exposed to Classified and/or Sensitive Materials and/or Sensitive

�or Restricted Areas If applicable, all contract employees, including subcontractor employees who are not in possession of the appropriate security clearance, will be escorted in areas where they may be exposed to classified and/or sensitive materials and/or sensitive or restricted areas. There is NO classified material at this project

� �location.

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�14. Contractor Company to Obtain a Facility Clearance and Individual Clearances at the Appropriate Level

� � The Prime Contractor Company must have (or will have) a Facility Clearance (FCL) at the appropriate level (IAW the NISPOM DOD 5220.22-M and AR 380-49) prior to the start of the contract awarded period of performance. Contractor personnel performing work under this contract must have the required security clearance, per AR 380-67, at the appropriate level at the start of the period of performance. Security Clearances and FCL requirements are required to be maintained for the life of the contract IAW the DD254 attached to the contract. If no FCL, the supporting Government Contracting Activity will sponsor the prime contract company in obtaining the

� �FCL. This location does NOT require a Facility Clearance/FCL. 15. Pre-Screen Candidates using E-Verify � �Program The Contractor must pre-screen Candidates using the E-verify Program (http://www.dhs.gov/E-Verify) website to meet the established employment eligibility requirements. The Vendor must ensure that the Candidate has two valid forms of Government issued identification prior to ensure the correct information is entered into the E-verify system. An initial list of verified/eligible Candidates must be provided to the COR no later than 3 business

� �days after the initial contract award. 16. & 17 Not Used

1.13 Payment

1.13.1 The Government will make payment upon completion of all services on each transformer bank, after the Government has inspected and accepted the services on each transformer bank, and the Government has reviewed, approved, and processed the Contractor’s invoice. The Contractor shall submit the invoice to the COR and/or any other person that has been designated in the contract to receive the invoice.

1.13.2 The Contractor must provide the Contractor’s name, address, contract number, period of services completed (i.e., for the month of January or for the period of performance of January 1 through February 23), CLIN number and specific quantities of work performed (i.e., 1 Month, 40 days, 100 acres, etc.), and total requested, for an invoice to be considered proper. The Contractor shall submit the invoice by the fifth (5th) of the month for services completed the previous month or submit the invoice upon completion of all services, in accordance with the period of performance stated in the CLIN.

1.14 Warranties

Contractor shall provide standard industry warranty for all equipment installed. This will cover at minimum one year of service. It will include all equipment, costs and, work associated with replacement of defective part.

2.0 Definitions. The following definitions and descriptions apply wherever the word(s) or phrase(s) is/are stated in this PWS:

Acceptable Level of Performance (ALP): The maximum percent defective, the maximum number of defects per hundred units, or the number of defects in a lot considered satisfactory on the average. The allowable leeway or variance from a standard before the Government will reject the specific service.

Contracting Officer’s Representative (COR): means an individual designated an authorized in writing by the Contracting Officer to perform specific technical or administrative functions.

Performance-Based Contract (FAR 2.101): Structuring all aspects of an acquisition around the purpose of the work to be performed with the contract requirements set forth in clear, specific, and objective terms with measurable outcomes as opposed to either the manner by which the work is to be performed or broad and imprecise.

Performance Requirements Summary (PRS): The PRS shows contract requirements, the component requirements related to each contract requirement, the price of each work requirement as a percentage of the associated contract requirement (Fixed Price Contracts), the standard of performance, and the acceptable level of performance (ALP) for each work requirement.

Quality Assurance Surveillance Plan (QASP): An organized written document used by the Government for quality assurance surveillance. Document contains sampling/evaluation guides, checklists, and the performance requirements summary (PRS).

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3.0 Government Furnished Items and Services

3.1 Utilities. The Government will make 120 volt and 480 volt electrical service available to the Contractor. The Contractor shall provide all extension cords, ladders, cranes and any other tools, equipment and materials needed to perform the contract.

3.2 Equipment. The Government will furnish the 230 kV high side bushings for step-up transformers 2, 3 and 4.

4.0 Contractor Furnished Items and Responsibilities

4.1 General. The Contractor shall furnish all supplies, equipment, facilities and services required to perform work under this contract that are not listed under Section 3 of this PWS.

4.2 Materials. The Contractor shall furnish 115 kV bushings for step-up transformer 1; 15 kV low side (phase and neutral) bushings for step-up transformers 1, 2, 3 and 4; all required transformer gaskets; all required equipment and materials for processing transformer oil; and all necessary equipment and materials for testing. Reference attached technical specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER BUSHING REPLACEMENT AND

MISCELLANEOUS TESTING AND REPAIRS.

5.0 Specific Tasks

5.1 Basic Services. The Contractor shall provide services for the following services:

1) Testing and inspection of generator step-up transformers 2, 3 and 4.

2) Test and install Government Furnished 230 kV high side bushings for step-up transformers 2, 3 and 4.

3) Furnish, install and test 115 kV high side bushings for step-up transformer 1.

4) Furnish, install and test 15 kV low side (phase and neutral) bushings for step-up transformers 1, 2, 3 and 4.

5) Replace gaskets on all bushings, on leaking temperature sensors and all covers that are removed during work on the step-up transformers with new gasket material as specified. This work shall be done during the same outages for the bushing replacements on each transformer.

6) Test, Store, Process (filter), and Vacuum Fill the insulating oil in each transformer tank during the same outages for the bushing replacements on each transformer. Recharge the nitrogen in each transformer tank after the transformers are vacuum filled with the reprocessed and tested oil.

5.2 Hazardous Energy. The Contractor will be required to work under the Government’s “Control of Hazardous Energy” clearance program. Contractor personnel are required to sign into the appropriate clearances.

The Government will install grounds on the High Voltage side and the Low Voltage side. The Contractor shall provide and install all other personal protective grounds and enter ground points into the clearance for the purpose of tracking.

5.3 PCB Certification. Prior to any work by the Contractor, the Government will furnish a pre-reclaiming PCB screening test for all equipment under this contract. This test will verify that all equipment is less than 50 ppm PCB.

The Contractor shall take oil samples for the purpose of verifying the transformer is not PCB contaminated prior to processing. Following processing by the Government, the Contractor shall sample the transformer and provide the Government with complete oil screen, DGA, and PCB test results.

5.4 Field Supervisor Experience. All related work, including transformer inspection and oil processing, if required, shall be under the direct supervision of a qualified field services supervisor. Qualifications shall include:

- A minimum of 3 years' experience supervising power transformer internal inspection, maintenance, and repair.

- The satisfactory completion of formalized training on regulations and procedures for spill prevention/clean-up, safety precautions, and testing and handling of mineral oil products including PCB items.

- The satisfactory completion of formalized training in the safety procedures pertaining to high voltage electrical equipment and confined space entry.

5.5 Contractor Responsibilities. The Contractor shall conduct a pre-job safety meeting. The Contractor shall take all necessary precautions to protect all employees and the general public from exposure to solids, liquids, vapors, PWS Page 10 and mists. Prior to commencing any work activities, barricades, roping, and "Danger-Keep Out" signs shall be put in place which clearly identify the work areas and equipment transport corridors and guard against unauthorized entry into the work area.

Prior to commencing any operations involving the transformer, temporary oil containment shall be constructed around the transformer and processing equipment. Sorbents shall be placed within the work area in amounts adequate to absorb 10% of the volume of transformer oil. NOTE that the existing area around the transformers is a rock, sand, fabric layered containment system. This cannot be used as the Contractor’s temporary oil containment system described above. The Contractor cannot use this existing containment system even for washing or oil drippage. The Contractor may be liable for damages to this containment system.

The Contractor will be required to put a containment system over the existing system and provide a stable surface to service the transformers.

5.6 Clean-Up of Work Area. After completion of work, all equipment used shall be decontaminated in accordance with applicable EPA regulations and properly secured. All rinsate shall be disposed of in accordance with federal, state, and local environmental regulations. All concrete (or other surfaces) which have come in contact with contaminated fluids in the course of the work shall be thoroughly scrubbed using a combination of sorbents, absorbents, solvents, and cleansers. All soils which have been contaminated as a result of work-related activities shall be removed and replaced with "clean" soil at the Contractor's expense.

5.7 Spill Prevention Plan. Prior to commencement of work, the Contractor shall submit and receive approval for a Spill Prevention Control & Countermeasure (SPCC) plan. The plan shall be developed in accordance with 40 CFR 112 and at a minimum include the following:

-Include a list of vehicles, equipment, and personnel to be used in accomplishing the work.

-The emergency spill response plan encompassing all steps the Contractor will take in the event of a spill or other emergency.

-Safety procedures covering all phases of operations including, but not limited to, handling, loading, transporting, securing loads, and first aid procedures.

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6.0 Performance Requirements Summary. The Contractor service requirements are summarized into performance objectives that relate directly to mission essential items. The performance threshold briefly describes the minimum acceptable levels of service required for each requirement. These thresholds are critical to mission success.

Performance Objective

Standard Performance Threshold Method of Surveillance

PRS # 1

The Contractor shall test and inspect generator step-up transformers 1, 2, 3 and 4.

Contractor shall comply with Section 26 11 14.00 10.

Approved test reports in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PRS # 2

The Contractor shall test and install Government furnished 230kV bushings for transformers 2, 3, and 4.

Contractor shall comply

26 11 14.00 10.

Approved test reports in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PRS # 3

The Contractor shall furnish, install and test 115 kV high side bushings for step-up transformer 1.

Contractor shall comply

26 11 14.00 10.

Approved shop drawings and test reports in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PRS # 4

The Contractor shall furnish, install and test 15 kV low side (phase and neutral) bushings for step-up transformers 1, 2, 3 and 4.

26 11 14.00 10.

Approved shop drawings and test reports in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PRS # 5

The Contractor shall replace gaskets on all bushings, on leaking temperature sensors and all covers that are removed during work on the step-up transformers.

26 11 14.00 10.

Approved shop drawings, test reports, and independent Government lab tests in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PRS # 6

The Contractor shall test, store, process (filter), and vacuum fill the insulating oil for step-up transformers 1, 2, 3 and 4.

26 11 14.00 10.

Approved shop drawings and test reports in compliance with 26 11 14.00 10.

Government review and approval in compliance with 26 11 14.00 10.

PWS Page 12

7.0 Attachments

-Technical Specification Section 26 11 14.00 10 - STEP-UP TRANSFORMER BUSHING REPLACEMENT AND

MISCELLANEOUS TESTING AND REPAIRS.

-Transformer Drawings - For Information Only (FIO) Drawings; 22 pages.

-GF/CI 196 kV Bushing Data; 3 pages.

-Oahe Generator Step Up Transformer Oil Test; 21 pages.

Generator Step-up Transformer Bushing, Oahe Dam, SD OA85

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 11 14.00 10

STEP-UP TRANSFORMER BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS

11/19

PART 1 GENERAL

1.1 BACKGROUND

1.2 SCOPE OF WORK

1.3 STANDARDS AND REGULATIONS

1.4 SYSTEM DESCRIPTION

1.4.1 General

1.4.2 Detail Drawings

1.5 SUBMITTALS

1.6 DELIVERY, STORAGE, AND HANDLING

PART 2 MATERIALS

2.1 MATERIALS AND EQUIPMENT

2.2 NAMEPLATES

2.2.1 General

2.2.2 Transformer Bushing Nameplates

2.3 GENERATOR STEP-UP TRANSFORMER BUSHING REPLACEMENT DATA

2.4 GENERATOR STEP-UP TRANSFORMER BUSHING SPARES

2.5 GENERATOR STEP-UP TRANSFORMER - NEW BUSHING SPECIFICATIONS

2.5.1 General Bushing Requirements

2.5.2 High-voltage Bushings (115kV)

2.5.3 Low-Voltage and Neutral Bushings

2.6 INSPECTION

2.7 GENERATOR STEP-UP TRANSFORMER RE-GASKETING

2.8 GENERATOR STEP-UP TRANSFORMER OIL TESTING

2.9 GENERATOR STEP-UP TRANSFORMER OIL REMOVAL AND STORAGE

2.10 GENERATOR STEP-UP TRANSFORMER OIL PROCESSING

2.11 GENERATOR STEP-UP TRANSFORMER REASSEMBLY

2.12 APPENDIX - FOR INFORMATION ONLY DRAWINGS, TRANSFORMER OIL TEST

DATA AND GF/CI 196 kV BUSHING DATA

2.13 MISCELLANEOUS

2.13.1 Liquid Dielectrics

2.13.2 Hardware

2.13.3 Preparation of Bolted Electrical Connections for Power Circuits

2.13.3.1 115 kV and 230 kV Bolted Connections

2.13.3.2 15 kV Copper Bolted Connections

2.14 FACTORY BUSHING TESTS

2.14.1 Transformer Bushing Design Tests

2.14.2 Transformer Bushing Test Voltages

2.14.3 Transformer Bushing Routine Tests

2.14.4 Factory Test Submittal Package

PART 3 EXECUTION

3.1 EXAMINATION

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3.2 GENERAL INSTALLATION REQUIREMENTS

3.2.1 Conformance to Codes

3.3 EQUIPMENT INSTALLATION

3.3.1 Transformer Bushings

3.3.2 Equipment Finishes

3.4 REQUIREMENTS FOR PERFORMANCE OF WORK WITHIN THE TRANSFORMER TANK

3.4.1 General

3.4.2 Tools and Parts Control and Accountability

3.5 DISPOSAL OF REMOVED BUSHINGS

3.6 FIELD TESTING AND INSPECTIONS

3.6.1 General

3.6.2 Safety

3.6.3 Transformer Tank Inspection

3.6.4 Transformer Testing and Commissioning

3.6.5 Transformer Bushing Field Tests

3.6.6 Operating Tests

3.7 BUSHING INSTALLATION SUPERVISOR

3.7.1 Bushing Installation Supervisor

3.7.2 Pre-Energization Services

3.8 ACCEPTANCE

-- End of Section Table of Contents --

SECTION 26 11 14.00 10 Page 2

SECTION 26 11 14.00 10

STEP-UP TRANSFORMER BUSHING REPLACEMENT AND MISCELLANEOUS TESTING AND REPAIRS

11/19

PART 1 GENERAL

1.1 BACKGROUND

The purpose of this project is to replace the generator step-up transformer bushings at Oahe Power Plant, South Dakota. There are four generator step-up transformers located in the transformer vaults on the draft tube deck at elevation 1456. The purpose of the four generator step-up transformers is to step voltage up from 13.8 kV at the generator terminals to either 115 kV or 230 kV for connection into the Oahe switchyard transmission busses. The transformer bushings are used to bring the high voltages out of the transformer windings from terminals inside the transformer tanks to aerial connections for connection to transmission lines which route to the switchyard for transmission onto the electrical distribution network. A transformer bushing is an insulating structure that facilitates the passage of an energized, current-carrying conductor through the grounded tank of the transformer.

The Oahe generator step-up transformer bushings are mounted on the generator step-up transformers located outdoors on the draft tube deck on the south side of the powerhouse at elevation 1456.0. There are 4 sets of step-up transformers as follows:

Transformer #1: Generator 1; rated 1 three-phase, forced oil and water, 103,000 kVA, 13.8 - 66.4/115 kV. ASEA type TTT9300. Instruction book ASEA No. 0587.88.

Transformer #2: Generators 2 and 3; rated 3 single-phase, forced oil and water, 68,700 kVA, 13.8 - 132.8/230 kV totaling 206,100 kVA for the bank.

ASEA type TTD9500. Instruction book ASEA No. 0587.88-2.

Transformer #3: Generators 4 and 5; rated 3 single-phase, forced oil and water, 68,700 kVA, 13.8 - 132.8/230 kV totaling 206,100 kVA for the bank.

ASEA type TTD9500. Instruction book ASEA No. 0587.88-2.

Transformer #4: Generators 6 and 7; rated 3 single-phase, forced oil and water, 68,700 kVA, 13.8 - 132.8/230 kV totaling 206,100 kVA for the bank.

ASEA type TTD9500. Instruction book ASEA No. 0587.88-2.

The step-up transformers are connected Delta on the low side and connected grounded Wye on the high side. The step-up transformers are oil filled to a certain level with the remainder of the space inside the transformer tanks containing pressurized nitrogen. The step-up transformers are also water cooled.

The 115 kV and 196 kV bushings are oil insulated. The 15 kV are dry type.

1.2 SCOPE OF WORK

This is a non-personal services contract to provide Step-Up Transformer Bushing Replacement and Miscellaneous Testing and Repairs at Oahe

SECTION 26 11 14.00 10 Page 3

Hydroelectric power plant, South Dakota. Project requirements include the following items:

1) Perform pre-work electrical testing on Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4.

2) Drain and store transformer oil from Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4.

3) Test and install Government Furnished 230 kV high voltage bushings on Transformer Banks No. 2, No. 3, and No. 4. (Quantity of 9 bushings installed.)

4) Furnish, test, and install 115 kV high voltage bushings for Transformer No. 1.

5) Furnish, test, and install 15 kV low voltage bushings for Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4. (Quantity of 21 bushings installed.)

6) Furnish, test, and install high voltage neutral bushings on Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4.

7) Replace gaskets on all bushings, leaking temperature sensors, and all covers that are removed during work on the transformers with new gasket material as specified.

8) Test, process (filter), and hot oil vacuum fill the insulating oil Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4.

9) Recharge the nitrogen in Transformer No. 1, and Transformer Banks No. 2, No. 3, and No. 4.

10) Perform pre-work and post-work electrical testing and insulating oil testing on Transformer No. 1, and Transformer Banks No. 2, No. 3, and No.

4.

11) All work on each transformer shall be performed during one outage per transformer.

1.3 STANDARDS AND REGULATIONS

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2016) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A575 (1996; E 2013; R 2013) Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades

SECTION 26 11 14.00 10 Page 4

ASTM A576 (2017) Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

ASTM C57.106 (2015) Acceptance and Maintenance of Insulating Mineral Oil in Electrical Equipment

ASTM D88 (2007; R2013) Standard Test Method for Saybolt Viscosity

ASTM D92 (2018) Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester

ASTM D97 (2017B) Standard Test Method for Pour Point of Petroleum Products

ASTM D445 (2018) Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

ASTM D611 (2012; R2106) Standard Test Methods for Aniline Point and Mixed Aniline Point of Petroleum Products and Hydrocarbon Solvents

ASTM D877/D877M (2013) Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes

ASTM D923 (2007) Standard Practice for Sampling Electrical Insulating Liquids

ASTM D924-99e1 (1999) Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids

ASTM D971 (2012) Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method

ASTM D974 (2014; E2015; E2016) Standard Test Method for Acid and Base Number by Color-Indicator Titration

ASTM D1275 (2015) Standard Test Method for Visual Examination of Used Electrical Insulating Liquids in the Field

ASTM D1298 (2012; R2017, REV B) Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

ASTM D1500 (2012; R 2017) Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)

SECTION 26 11 14.00 10 Page 5

ASTM D1524 (2012) Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration

ASTM D1533 (2012) Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration

ASTM D1698 (2003; R 2008) Standard Test Method for Sediments and Soluble Sludge in Service-Aged Insulating Oils

ASTM D1816 (2012) Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes

ASTM D2112 (2015) Standard Test Method for Oxidation Stability of Inhibited Mineral Insulating Oil by Pressure Vessel

ASTM D2161 (2017) Standard Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity

ASTM D2285 (1999) Standard Test Method for Interfacial Tension of Electrical Insulating Oils of Petroleum Origin Against Water by the Drop-Weight Method

ASTM D2300 (2008; R 2017) Standard Test Method for Gassing of Electrical Insulating Liquids Under Electrical Stress and Ionization (Modified Pirelli Method)

ASTM D2440 (2013) Standard Test Method for Oxidation Stability of Mineral Insulating Oil

ASTM D2668 (2007; R 2013) Standard Test Method for 2,6-di-tert-Butyl- p-Cresol and 2,6-di-tert-Butyl Phenol in Electrical Insulating Oil by Infrared Absorption

ASTM D2945 (1990; R 2003; E 2003; E 2009) Standard Test Method for Gas Content of Insulating Oils

ASTM D3284 (2005; R 2011) Standard Practice for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters

ASTM D3300 (2012) Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Under Impulse Conditions

ASTM D3487 (2016) Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus

ASTM D3612 (2002; R 2017) Standard Test Method for Analysis of Gases Dissolved in Electrical

SECTION 26 11 14.00 10 Page 6

Insulating Oil by Gas Chromatography

ASTM D3635 (2013) Standard Test Method for Dissolved Copper In Electrical Insulating Oil By Atomic Absorption Spectrophotometry

ASTM D4059 (2000; R 2010) Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography

ASTM D4768 (2011) Standard Test Method for Analysis of 2,6-Ditertiary-Butyl Para-Cresol and 2,6-Ditertiary-Butyl Phenol in Insulating Liquids by Gas Chromatography

ASTM D5837 (2015) Standard Test Method for Furanic Compounds in Electrical Insulating Liquids by High-Performance Liquid Chromatography

(HPLC)

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C135.1 (1999) Standard for Zinc-Coated Steel Bolts and Nuts for Overhead Line Construction

IEEE C135.2 (1999) Threaded Zinc-Coated Ferrous Strand-Eye Anchor Rods and Nuts for Overhead Line Construction

IEEE C2 (2017; Errata 1-2 2017; INT 1 2017) National Electrical Safety Code

IEEE C57.12.00 (2015) General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

IEEE C57.12.10 (2017) Requirements for Liquid-Immersed Power Transformers

IEEE C57.12.90 (2015; Corr 2017) Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

IEEE C57.19.00 (2004;w/Errata) IEEE Standard General Requirements and Test Procedure for Power Apparatus Bushings

IEEE C57.19.01 (1991) IEEE Standard Performance Characteristics and Dimensions for Power Transformer and Reactor Bushings

IEEE C57.19.01 (2000) IEEE Standard Performance Characteristics and Dimensions for Power Transformer and Reactor Bushings

IEEE C57.19.01 (2017) IEEE Standard Performance Characteristics and Dimensions for Power Transformer and Reactor Bushings

SECTION 26 11 14.00 10 Page 7

IEEE C57.19.100 (2012) Guide for Application of Power Apparatus Bushings

IEEE C57.125 (2015) Guide for Failure Investigation, Documentation, Analysis, and Reporting for Power Transformers and Shunt Reactors

IEEE C57.140 (2017) Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers

IEEE C57.149 (2012) Guide for the Application and Interpretation of Frequency Response Analysis for Oil-Immersed Transformers

IEEE C57.152 (2013) Guide for Diagnostic Field Testing of Fluid-Filled Power Transformers, Regulators, and Reactors

IEEE C57.93 (2019) Guide for Installation and Maintenance of Liquid-Immersed Power Transformers

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017; ERTA 1-2 2017; TIA 17-1; TIA 17-2;

TIA 17-3; TIA 17-4; TIA 17-5; TIA 17-6;

TIA 17-7; TIA 17-8; TIA 17-9; TIA…