amendment02.pdf

W59XQG11873683

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Transformer Refurbishment

POC: Shaun A. McAfee at 402-995-2061 or shaun.a.mcafee@usace.army.mil

The purpose of this amendment is to:

1) Extend the due date for RFQ.

2) Change the language in paragraph 2.5.3 of the Statement of Work.

3) Include instructions for obtaining "specifications attachments."

No other changes are hereby made and all other terms and conditions remain the same.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 17

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 24-Aug-2011

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W9128F-11-T-0126

X 9B. DATED (SEE ITEM 11)

15-Aug-2011

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

24-Aug-2011

CODE

U.S. ARMY CORPS OF ENGINEERS, OMAHA DIST

CONTRACTING OFFICE

1616 CAPITOL AVENUE

OMAHA NE 68102-4901

W9128F 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9128F-11-T-0126

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 26-Aug-2011 02:00 PM to 02-Sep-2011 12:00 PM.

The following have been modified:

INSTRUCTIONS AND NOTICES

Solicitation Information:

This solicitation will be awarded on the basis of best value.

Please complete and return the following:

-The Standard Form (SF) 1449 pages where it was necessary to fill in information/price(s)/signature.

- Documentation required in FAR Clause 52.212-2 “Evaluation – Commercial Items.”

-Offeror Representations and Certifications -- Commercial Items (Refer to Federal Acquisition Regulation (FAR) 52.212-3)

Please enter your CAGE Code in Block 17a of the SF 1449 within the smaller block next to the word “code.”

The company name and street address entered on the SF 1449 should match the Central Contractor Registration (CCR) entry for that CAGE Code. The offeror’s CCR Profile must contain the North American Industrial Classification Systems (NAICS) Code listed in Block 10 on Page 1 of the SF 1449 in order to be awarded the contract. Additional information pertaining to the CCR, CAGE Code and NAICS Code is contained in this Instructions and Notices section and in the Clauses section of this solicitation.

PERFORMANCE AND PAYMENT BONDS ARE REQUIRED 10 DAYS AFTER AWARD – Refer to 52.228-16, Performance and Payment Bonds – Other than Construction

Offers are due by 12:00 PM CST on 2 Sep 2011. Send your completed solicitation package to the attention of Shaun McAfee via e-mail, fax, or mail as follows:

U.S. Army Corps of Engineers ATTN: Shaun A. McAfee (CECT-NWO-C) 1616 Capitol Avenue Omaha, NE 68102-4901

FAX: 402-995-2488

E-mail: shaun.a.mcafee@usace.army.mil (please scan documents with signatures)

Please reference Solicitation Number W9128F-11-T-0126 on all correspondence.

Points of Contact (POC): ALL QUESTIONS AND CONCERNS WILL BE ROUTED THROUGH THE

CONTRACTUAL POC.

For contractual questions, contact Shaun A. McAfee, Contract Specialist, at 402-995-2061 or at shaun.a.mcafee@usace.army.mil

For technical or specification questions; contact Melissa Kurtz at 402-995-2408 or melissa.l.kurtz@usace.army.mil

Information pertaining to mandatory registrations, codes, numbers and representations and certifications:

The Business Partner Network (BPN):

The BPN is located at internet address http://www.bpn.gov and is a single source for vendor data for the Federal Government. The BPN is a search mechanism that provides links into several key data bases across Federal Agencies such as Central Contractor Registration (CCR), Online Representations and Certifications Application (ORCA), Small Business Administration (SBA), and FedBizOpps (Federal Business Opportunities).

Central Contractor Registration (CCR):

CCR is required prior to receiving contract award. Please refer to Defense Federal Acquisition Regulation Supplement (DFARS) Clause 252.204-7004 (Alternate A) contained within this solicitation. If you are not currently registered in CCR, refer to the aforementioned clause for information and instructions on how to register. You may link to the CCR website through the aforementioned BPN website or you may go directly to the CCR website at https://www.bpn.gov/ccr/default.aspx. Clicking on “CCR Help” in the upper right-hand corner of the CCR Home Page will give you access to the following information:

CCR Frequently Asked Questions: answers to your most common questions

CCR User Account Guide: instructions on how to create your user id and password

CCR User’s Guide: CCR Registration Guide

For CCR Customer Service, contact:

Federal Service Desk (8 AM – 8 PM Eastern Standard Time) 866-606-8220 334-206-7828 DSN: 809-463-3376 (then dial toll free number)

Do not delay returning a quote while processing your CCR entry.

Electronic Funds Transfer (EFT):

EFT is a mandatory requirement for the U.S. Army Corps of Engineers. The successful offeror will be required to complete and return EFT forms that will be provided by our agency upon contract award, unless the offeror is currently entered as an active vendor in the Omaha District Corps of Engineers Financial Management System (CEFMS). Offerors with an active vendor entry in the Omaha District CEFMS will be asked to verify the existing EFT information. Please note the CEFMS EFT entry is in addition to the EFT information entered into the offeror’s

CCR.

NAICS Code:

This solicitation is being advertised under the North American Industrial Classification Systems (NAICS) Code listed in Box 10 on Page 1 of the SF 1449. You must ensure this NAICS Code is incorporated into your current CCR Profile if your company can provide the type of product or service applicable to this NAICS Code. Failure to have this NAICS Code in your current CCR Profile may result in not being considered for award. NAICS Codes may be viewed at the U.S. Census Bureau website at http://www.census.gov/eos/www/naics.

Dun and Bradstreet Number (DUNS Number):

A DUNS Number is required for CCR. If you do not currently have a DUNS number, you may acquire one by linking to the Dun & Bradstreet (D&B) website through the aforementioned CCR website or you may go directly to the D&B website at http://fedgov.dnb.com/webform. D&B’s Government Customer Response Center (GCRC) phone number is 866- 705-5711.

Dun & Bradstreet (D&B) provides a DUNS Number, a unique nine digit identification number, for each physical location of your business.

DUNS Number assignment is free for all businesses required to register with the US Federal Government for contracts or grants.

If a DUNS Number does not exist for your business location, it can be created within 1 business day via the D&B website.

Online Representations and Certifications Application (ORCA):

ORCA is an E-Government initiative that was designed by the Integrated Acquisition Environment (IAE) to replace the paper based Representations and Certifications (Reps and Certs) process. Offeror’s are encouraged to utilize this system because the Government’s intention is for ORCA to be a mandatory system to support the Paperwork Reduction Act. Refer to Federal Acquisition Regulation (FAR) Clause 52.212-3 (Alternate I) contained within this document for additional information. You may link to the ORCA website through the aforementioned BPN website or the aforementioned CCR website or you may go directly to the ORCA website at https://orca.bpn.gov/. Do not delay returning a quote while processing your ORCA entry because you may submit the paper version of the Reps and Certs contained at FAR Clause 52.213-3 (Alternate I) and DFARS Clause 252.212-7000 for this solicitation if necessary.

Offeror’s Information required to process an award:

CAGE Code______________________

DUNS Number ___________________

Tax Identification Number (TIN)______________________________

Company Name and Address (should match CCR and Block 17a on SF 1449):

Point of Contact

Name_______________________________________

Title________________________________________

Business Phone #______________________________

Cell Phone # (if applicable)______________________

E-Mail______________________________________

Is your Company:

Small Business concern? Yes No Small Disadvantaged Business concern? Yes No Veteran-Owned Small Business concern? Yes No Service-Disabled Veteran-Owned Small Business concern? Yes No Women-owned business concern? Yes No Sole Proprietorship? Yes No Partnership? Yes No Corporation? Yes No Registered with CCR? Yes No

State and Local Taxes (JAN 1982):

The U.S. Army Corps of Engineers is exempt from paying state and local taxes per Title 4 United States Code 104-

107. The U.S. Army Corps of Engineers Tax ID Number is 62-1642142. Contractor is responsible for paying South Dakota excise tax if applicable.

Payments:

Payments will be made after receipt of a proper invoice or receipt of acceptable supplies or services, whichever is later. The contractor is required to include the contract number on all invoices so that receipt and payment for the item or service may be expeditiously processed.

Federal Legal Holidays:

The following Federal legal holidays are observed by this installation:

New Year's Day 1 January Martin Luther King's Birthday Third Monday in January President's Day Third Monday in February Memorial Day Last Monday in May Independence Day 4 July Labor Day First Monday in September Columbus Day Second Monday in October Veterans Day 11 November Thanksgiving Day Fourth Thursday in November Christmas Day 25 December

If a wage determination applies, the number of holidays specified on it has priority over this clause.

Insurance Required (Local Provision):

In accordance with FAR 28.307-2, “Liability,” the contractor shall procure the following minimum insurance:

Type Amount Workman’s Compensation and Employer’s Liability Insurance $100,000 General Liability Insurance $500,000 per occurrence

And, when automobiles are used in connection with performing the contract:

Type Amount

Automobile Liability Insurance $200,000 per person Bodily Injury $500,000 per occurrence Property Damage $ 20,000 per occurrence

And, when aircraft are used in connection with performing the contract:

Type Amount Aircraft Public and Passenger Liability Insurance $200,000 per person Bodily Injury (other than passenger injury) $500,000 per occurrence Property Damage $200,000 per occurrence Passenger Liability Bodily Injury $200,000 multiplied by the number of seats or passengers, whichever is greater

And, when contract performance involves use of vessels, the Contracting Officer shall require, as determined by the agency, vessel collision liability and protection and indemnity insurance.

The contractor is responsible for contacting the state for compliance with its workman’s compensation laws.

STATEMENT OF WORK

Big Bend Project Ft. Thompson, SD

Transformer Service and Maintenance

Part 1 - General

1.1 SCOPE

Contractor shall perform inspection, maintenance and electrical testing on two 1500KVA transformers with load tap changers as described herein. The work will be performed at the Big Bend Project, Ft. Thompson, South Dakota.

1.2 EXISTING LINEUP BACKGROUND

Big Bend has two 13.8KV/480V, 1500KVA, LTC (on the secondary) transformers that feed station service power to the plant. Each transformer has their own 13.8KV supply through a vacuum breaker and cables. Each transformer feeds one side of the 480V station service through a bus duct to 480V breakers SS1 and SS2. The 480V station service side 1 and 2 can be tied together using SS3 breaker with one of breakers SS1 or SS2 open or racked out to supply power to plant through one transformer. Transformer tap changer controls have been replaced with Beckwith M-2280 controls. Refer to attachments included in solicitation for further descriptions.

Attachments included (email contractial POC Shaun McAfee for a copy of these attachments combined.)

1. 103C6027 Nameplate Drawing

2. 103C6491 Outline Drawing

3. 103C6904 Outline Drawing (Transformer Sealed)

4. 103C9370 Outline (LTC-68 & Control Center)

5. 115B7142 Connection Diagram

6. Normandy Machine Company Bill of Materials for renewable parts.

7. Past Dissolved Gas Analysis Reports (1 each tank)

8. PCB Test report for station service LTC tanks

9. PCB Test report for station service Main tanks

10. GEI-64910, GE Instruction Manual for Transformer

11. GEI-54028A, GE Instruction Manual for LRT 68 LTC

12. Photos of transformers.

1.2 SUBMITTALS

Contractor Experience – For Information Only (FIO)

Contractor shall have minimum of 10 years experience performing work of this type.

Prior to Site Work:

Contractor On-Site Personnel – Government Approval (GA)

Contractor will provide a data sheet on all contract personnel entering the project prior to arrival. The information to provide shall include copy of current valid driver’s license, recent photo, statement of US residency, current home address, and name of company employed by. The on-site personnel list shall be submitted at least 10 days prior to arrival on-site. Follow-up submittals shall be made 10 days prior to arrival on-site for any new Contractor personnel throughout the Contract.

Job Safety Plan – For Information Only (FIO)

Contractor shall submit a job specific safety plan prior to start of work. The plan will also address environmental protection measures as work will be performed near navigable waters. The plan will outline the requirements and plans for disposal of used insulating oil. The safety plan shall be submitted 60 days prior to on-site work.

Replacement Bushing – Government Approval (GA)

The Contractor shall submit catalog cut-sheets, drawings, and design test reports for the two replacement 480V bushings. Bushing information shall be submitted 30 days prior to supply.

Test Procedure for main tank – Government Approval (GA)

The test procedure for electrical testing of the main tank shall be submitted 30 days prior to the start of electrical testing.

Test Procedure for LTC – Government Approval (GA)

The test procedure for electrical testing of the LTC shall be submitted 30 days prior to the start of electrical testing.

New Oil Certification – For Information Only (FIO)

The oil properties for the new supplied oil shall be submitted 30 days prior to delivery.

Field Reports:

Tool Equipment Daily Checklist – For Information Only (FIO) The tool equipment daily checklist shall be submitted at the end of each shift.

Transformer As-Found Condition Report – Government Approval (GA)

Contractor shall provide a complete as-found condition report on each transformer and LTC to include, but not limited to, visual assessment, recommended corrective actions for deficiencies found, and color photos. The report shall be submitted within 2 working days of inspection completion.

Transformer Post-Rehab Condition Report – Government Approval (GA)

Contractor shall provide a complete condition report on each transformer and LTC to include but not limited to visual assessment, work performed, parts replaced, electrical test records, recommended maintenance activities and schedule, oil analysis records. The reports shall be submitted within 30 days of completion of work.

Oil Test Reports – For Information Only (FIO)

Oil samples shall be taken from the main tank and LTC and sent to a laboratory for testing after the completion of all work. The oil test results shall be provided to the Government for use in the permanent equipment record.

1.3 Referenced Publications

ASTM D 1533 (2000; R 2005) Standard Test Method for Water in Insulating

Liquids by Karl Fischer Titration

ASTM D 3283 (1998; R 2004) Standard Specification for Air as an Electrical

Insulating Material

ASTM D 3487 (2000; R 2006) Standard Specification for Mineral Insulating Oil

Used in Electrical Apparatus

ASTM D 4059 (2000; R 2005) Standard Test Method for Analysis of

Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography

ASTM D 923 (2007) Sampling Electrical Insulating Liquids

IEEE C57.106 (2006) Guide for Acceptance and Maintenance of Insulation Oil in

Equipment

IEEE C57.12.90 (2010) Test Code for Liquid-Immersed Distribution, Power, and

Regulating Transformers

IEEE C57.93 (2007) Guide for Installation of Liquid-Immersed Power

Transformers

1.4 Tools and Parts Control and Accountability Procedure

1.4.1 Purpose

Provide tools and parts control and accountability.

a. Tools and parts control and accountability, including personal items, are necessary to ensure that foreign objects are not left loose within the transformer housing.

b. Loose objects inside the transformer are not desirable and inspections must be conducted to ensure that loose objects are not left in place.

c. Tools, parts, and personal items will be controlled and accounted for. The Contractor shall be responsible for overall control of tools, parts, and people. The Government construction representatives will ensure compliance by Government personnel and Government visitors.

d. Special meetings to announce start of this control and to emphasize performance for everyone will be conducted jointly with Contractor and Government personnel.

1.4.2 Inspections

a. The transformer will be inspected independently by each representative of the Contractor and Government personnel after all repairs/replacements are made

b. Personnel will remove all personal items and tools from their person prior to making the inspections. Removal of the personal items will be verified by the Contractor’s representative.

c. At the end of each shift, the Contractor’s supervisor will inspect the inside of the transformer housing for any loose tools and parts. Loose tools or parts will be removed and accounted for each day. No personnel will leave the area until everything logged into the transformer housing is logged out.

1.4.3 Tools, Parts, and Personal Items Control and Accountability

a. To control the tools entering the transformer housing, all personal transportable tools will be checked out of a controlled space, such as large tool bins of fenced cages, and checked back in on each shift. A dedicated tool person (laborer) on each shift will be responsible to assure that inventoried tools for each craftsman are checked out to that craftsperson at the beginning of the shift and checked back in at the end of each shift.

The inventory will be specified; that is, each tool will be identified for each craftsperson and a checklist with all the tools listed will be checked for tools checked out and in each day and signed by the tool person. Should a tool be lost during the shift, the craftsperson will be directed to find the tool before he is allowed to leave the site. A sample checklist is attached.

b. To control small personally transportable parts entering the transformer housing, the dedicated tool control person will inventory and issue the parts at the start of each shift.

At the end of each shift, a count will be made of the installed parts to ensure that the number checked out was actually installed. The Contractor’s supervisor will reconcile any shortage of small parts.

1.4.4 Responsibility and Records

a. The Contractor’s supervisors will be responsible that all tools are accounted for and signed in and out on a daily basis.

b. A copy of the Tool Equipment Daily Checklist will be turned in to the Government Representative at the end of each shift.

Part 2 – Services to Supply

2.1 Oil Spill Berm

An oil spill retention berm shall be provided for on-site storage of any oil, and around all equipment and connections used in pumping activities. Drains in the near vicinity shall be plugged and surrounded with oil-absorbent booms. The transformers shall be surrounded with oil-absorbent booms for the duration of the work.

2.2 Gaskets

Gaskets shall be made of a one-piece construction, cork-neoprene rubber blend material, meeting the minimum requirements of ASTM F 104, classification F-229000, specifically designed for use in sealing transformer insulating oil in oil-filled power transformers. Bushing gaskets shall be the bushing manufacturer’s recommended material. The gasket cross-section shape shall match the gasket groove in the transformer – e.g. no circular cross-section shaped gasket is allowed in a square cross-section groove.

2.3 Oil

2.3.1 Type of Oil Supplied

The grade of insulating oil furnished shall be produced from a predominately naphthenic base crude petroleum, shall be new, and shall be specifically prepared and refined for use in electrical equipment as an insulating and cooling medium. Except for the oxidation inhibitor, the insulating oil shall be free from additives of every kind, either natural or synthetic.

2.3.2 New Oil Chemical, Physical, and Electrical Characteristics

New insulating oil provided shall be tested in accordance with, and shall meet the test requirements of, ASTM D 3487, Table 1, Type II, with an oxidation inhibitor content of 0.3 percent by mass, prior to shipment. In addition to the requirements listed in ASTM D 3487 Table 1, the insulating oil for the each transformer and bushings shall contain no Polychlorinated Biphenyls (PCBs) as tested in accordance with ASTM D 4059, and the water content during final filling and assembly shall not exceed 20 parts-per-million (ppm) as tested in accordance with ASTM D 1533. The Government, at point of delivery, may draw samples in accordance with ASTM sampling standards, for testing to determine whether the oil meets the specifications. Oil so tested and failing to meet the requirements will be removed and replaced by, and at the expense of, the Contractor. Refurbished oil shall meet the

2.3.3 Oil Samples

Samples for testing shall be obtained as specified in ASTM D 923.

2.3.4 Testing

Chemical, physical, and electrical tests shall be conducted by the Contractor in accordance with the test methods listed in ASTM D 3487, Table 1.

2.4 Dry-Air

Dry-air shall be in accordance with ASTM D 3283, Type I. As identified in the referenced standard, the composition and properties of the dry-air shall be as follows:

a. Oxygen, volume: 19.5% to 23.5%

b. Carbon monoxide, max. volume: 0.0020%

c. Carbon dioxide, max. volume: 0.10%

d. Nitrogen: predominantly balance

e. Dew point, max.: -58 Degrees Celsius

2.5 Main Tank of Transformer

2.5.1 General

Contractor shall physically inspect and test two transformers consistent with IEEE C57.12.90, to include but not limited to:

1. Inspect anchorage, alignment, and grounding

2. Inspect all bushings and connections.

3. Contractor shall replace existing temperature probe in well with similar function to the existing. The dimension of the temperature probe is 6” long by ½” diameter installed in temperature indicating well. Contractor shall field verify equipment.

4. Contractor shall replace one 480V bushing and bushing gasket that is damaged and provide one spare 480V bushing and gasket. From researching these transformers a part number from GE Parts is W01B756BB for the bushing and 127A204 P22 for the mounting gasket. Contractor shall field verify part numbers and is fully responsible for providing the correct parts.

5. Contractor shall replace any gaskets on terminal compartments to include hi-voltage, low voltage and control power compartments. Contractor shall replace any bolts or nuts that hold the compartment covers that are missing or damaged. This may entail affixing stationary nut to compartments to receive bolts.

6. Replace two manhole gaskets per transformer shown on G.E. drawing 103C6904 item

13. Replace pressure relief device (PRD) shown on G.E. drawing 103C6904 item 19.

The PRD shall have visual indication flag of operation and be capable of electrical indication. Electrical contact shall be rated for 125V dc.

7. Contractor shall perform electrical tests pursuant to this type of transformer to give an overall condition of the transformer. Tests shall be prior to disassembly and after completion of rehabilitation work. Tests methods and results shall be in accordance with IEEE C57.12.90. Tests shall include but not limited to:

a. Winding resistance. Winding resistance measurements shall be performed on transformer windings and on all winding tap positions

b. Winding insulation resistance

c. Core insulation resistance

d. Turns Ratio Test – shall be performed on all winding tap positions

e. Insulation Power Factor and excitation current

f. Bushing power factor and capacitance measurement

g. Sweep Frequency Response Analysis – at nominal and full winding tap.

h. Dissolved Gas Analysis similar to previously performed. Past analysis report attachment included with solicitation.

i. Contractor shall provide with their proposal a description of the tests they propose to perform.

8. Contractor shall drain and dispose of existing main tank oil and provide new Type II inhibited electrical insulating oil.

2.5.2 Moisture Control for Tank Access

The Contractor shall make every effort to minimize exposing the windings to atmosphere. When the tank is unsealed, dry air as defined in this Specification shall be used to provide positive air flow in the tank. At the end of each workday, the tank shall be sealed and pressurized to 2.5 psi of dry air.

2.5.3 Vacuum Drying

Following refurbishment, the tank shall be sealed and vacuum applied to the 1” upper filter press valve for high vacuum drying, as described herein and in IEEE C57.93, paragraph 4.9.2. Vacuum shall be a minimum of 0.5 torr. If 0.5 torr cannot be reached, the Contractor shall inform the COR and provide a satisfactory explanation. After reaching the 0.5 torr minimum vacuum, the contractor shall maintain the vacuum for a minimum of 4 hours.

2.5.4 Vacuum Filling

Following vacuum drying, the transformer shall be hot-oil vacuum filled as described in IEEE C57.93, paragraph 4.8.5. The oil temperature at the processing outlet shall be between 55°C and

60°C. The transformer shall be allowed to rest for 24 hours following vacuum filling. A final insulation power factor test shall be performed showing that the power factor is below 0.5% prior to energizing the transformer. The transformer shall be held at no load for a period of 12 hours prior to loading.

2.6 Load Tap Changer Maintenance

Contractor to service and perform maintenance on two On Load Tap Changers consistent with industry standards to include but not limited to:

1. Inspect physical and mechanical condition.

2. Inspect anchorage, alignment, and grounding.

3. Internal inspection by removing oil, cleaning carbon residue and debris from compartment. The LTC compartment shall be wiped clean and all debris and particles removed prior to final filling.

4. Contractor shall provide contact refurbishment parts for this style of LTC. Contractor shall supply the following parts. Refer to Type LRT-68 GE Instruction book GEI- 54028A and Normandy Machine Company drawing 3811000000 for renewable parts.

Contractor may procure parts from any vendor source. Contractor to field verify existing equipment for part compatibility.

a. Selector Movable Assembly part # 3811010000. Quantity 3

b. Selector Stationary Contacts part # 3711013005 Quantity 27

c. Reverse Movable Assembly part # 3811210000 Quantity 3

d. Reverse Stationary Contacts part # 3811212002 Quantity 6

The contractor shall replace any parts that warrant replacement during the inspection and maintenance from these supplied renewable parts. The parts that are not used shall be turned over to the government for future use. All tap changer contacts shall be silvered.

5. Contractor shall supply two LTC door gaskets for each transformer or four total. Two will be used by the contractor after maintenance and two will be turned over to the government as spares.

6. Contractor shall replace gasket on LTC manhole item 13 drawing 103C9370 on each transformer LTC.

7. Contractor shall drain and dispose of the LTC oil and provide new Type II inhibited electrical insulating oil in accordance with paragraph 2.3, type “Hyvolt II”, or equal. The existing oil was tested in 1992 for PCB’s with SS#1 LTC having 8 ppm (sample ID 0544LL) and SS#2 LTC having 15 ppm (sample ID 0543LL). Sample analysis documentation included in solicitation for review. Contractor shall dispose of removed oil in accordance with all regulations governing such disposal.

8. Contractor to per perform a baseline Dissolve Gas Analysis on new installed oil and provide a PCB analysis of the oil.

9. Contractor to perform electrical test pursuant to this type of electrical equipment to include but limited to:

a. Resistance measurements through bolted connections with use of low-resistance ohmmeter.

b. Perform turns ratio at all tap positions.

c. Contractor shall provide with their proposal a description of the test they propose to perform.

Part 3 – Execution

3.1 General

1. The contract length shall be 270 days from notice to proceed. Contractor shall coordinate with contracting officer for transformer outages.

2. The government will supply all reasonable 120V and 480V power and station service 115lb air for contractor use.

3. The government will make available restroom facilities for work lasting less than 30 days.

4. Contractor will be working under the Corp of Engineers Hazardous Energy Control Program. This at minimum will include the contractor supervisor understanding the boundaries of the clearance, placing lock on group lock box and briefing contractor effected personnel.

5. The Contract shall be responsible for confirming lockout, removing bus connections for physical isolation of the equipment, all disassembly and reassembly necessary for work.

6. Contractor will provide a data sheet on all contract personnel entering the project prior to arrival. The information to provide will include copy of current valid driver’s license, recent photo, statement of US residency, current home address, and name of company employed by.

7. Government reserves the right to restrict access to the project when threat conditions elevate.

8. All material removed under this Contract shall become the property of the Contractor.

The Contractor shall dispose of all waste in accordance with applicable laws and regulations.

9. Contractor shall maintain a neat work area free from obstructions and hazards wherever possible. At the end of the site work period, the Contractor shall return the work area to its original condition and repair any damages caused during the course of the work.

3.2 Requirements for Performance of Work Inside of Transformer

All work performed under this Contract is assumed to be performed inside of the transformer tank with the transformer in its permanent operating location, without removal of the transformer cover or untanking of the core/coil assembly. Internal inspections shall be performed per the requirements of IEEE C57.93, paragraph 4.4. Prior to removal of the transformer man-hole covers and entrance into the tank, the following requirements shall be met by the Contractor:

a. A waterproof weather cover shall be erected over the transformer to prevent any moisture or falling objects from entering the tank.

b. The top of the transformer shall be thoroughly cleaned and vacuumed to minimize the possibility of contaminants entering the tank.

c. The temperature and relative humidity around the transformer shall be monitored during the performance of the work.

d. All personnel entering the transformer tank shall wear ‘Tyvek’ suits, or equivalent, and a logbook shall be maintained of all items taken into and brought of the transformer to assure nothing has been inadvertently left inside.

Part 4 – Delivery/Contacts

US ARMY CORPS OF ENGINEERS

Big Bend Project

33573 N Shore Road Ft. Thompson, SD 57339

All submittals and correspondences shall be directed to:

US ARMY CORPS OF ENGINEERS

Big Bend Project

33573 N Shore Road Chamberlain, SD 57325

Project Contacts:

Contractual: Shaun McAfee, Contract administrator

402-995-2061 shaun.a.mcafee@usace.army.mil

Technical: Trevor McDonald, Electrical Engineer 605-245-2331 x3002 trevor.r.mcdonald@usace.army.mil

Bid Schedule

For the purposes of this contract the proposal will be evaluated on the base bid if an option(s) are exercised then one or two of the options will be included in the pricing for evaluation purposes.

Description Qty Unit Price Total

2.5.1 Main Tank Inspection 2 ea.

2.5.1.3 Replace temperature

indicating device

2 ea.

2.5.1.4 Replace one LV bushing

and provide spares

1 job

2.5.1.5 Replace compartment

gaskets and fasteners.

2 ea.

2.5.1.6 Perform electrical testing

on main transformer, Provide description of test to perform with proposal

2 ea.

2.5.1.7 Perform electrical testing

on main transformer

2 ea.

2.5.1.8 Replace main tank oil 2 ea.

2.6.1,2,3 Inspect and clean LTC, install renewable parts as needed.

2 ea.

2.6.4 Supply renewable parts --------- --------------------- -------------------- Selector Movable assembly part # 3811010000

3 ea.

Selector Stationary Contacts part # 3711013005

27 ea.

Reverse Movable Assembly part # 3811210000

3 ea.

Reverse Stationary Contacts part # 3811212002

6 ea.

2.6.5,6 Provide gaskets as outlined.

1 Job

2.6.7,8 Replace oil and dispose of existing oil and provide oil analysis.

2 ea.

2.6.9 Perform electrical testing

on LTC, Provide description of test to perform with proposal.

2 ea.

Miscellaneous and Incidental Materials and Labor

1 Job

Total Bid

(End of Summary of Changes)