A.07.23_Solicitation_Amendment_00002.pdf

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

PROJECT TITLE: John Day Main Unit 6 Generator Repair, John Day Lock and Dam, Sherman County, Oregon

1. The purpose of this amendment is to clarify the time necessary for the government to complete generator reassembly. See the attached revised Section 48 13 16.00 26 of the contract specifications.

2. All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY 28-Jun-2018

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 W9127N18R0006

X 9B. DATED (SEE ITEM 11)

31-May-2018

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 is extended, X 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

28-Jun-2018

CODE

USACE PORTLAND DISTRICT

333 SW 1ST AVE

PORTLAND OR 97204-3440

W9127N 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9127N18R0006

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

(End of Summary of Changes)

John Day Main Unit 6 Generator Repair

SECTION TABLE OF CONTENTS

DIVISION 48 - ELECTRICAL POWER GENERATION

SECTION 48 13 16.00 26

REPAIR OF HYDRAULIC-TURBINE DRIVEN ALTERNATING CURRENT GENERATOR

PART 1 GENERAL

1.1 GENERAL

1.2 REFERENCES

1.3 SUBMITTALS

1.4 EXISTING GENERATOR INFORMATION

1.4.1 Unit Identification and Nameplate

1.4.2 Description of Generator

1.4.3 Failure History

1.4.4 Government-Furnished Equipment (GFE)

PART 2 PRODUCTS

2.1 MATERIALS

2.2 WINDING SUPPLIES

2.3 FILLERS, TIES, AND BLOCKING MATERIAL

2.3.1 General

2.3.2 Side Packing

2.3.3 Center Filler and Bottom Filler

2.3.4 Spring-Type Filler Material

2.3.5 Wedges and Top Fillers

2.3.6 Two-Part Wedges

2.4 PARTIAL DISCHARGE ANALYZER

2.4.1 Analyzer

PART 3 EXECUTION

3.1 GENERAL TESTING REQUIREMENTS

3.2 SPRING TYPE FILLER MATERIAL TEST

3.3 GENERATOR DISASSEMBLY

3.4 GENERATOR WORK PLATFORM

3.5 PROTECTION OF BRAKE ASSEMBLIES

3.6 STATOR WINDING INSPECTION, ISOLATION OF FAILED BARS, AND TESTING

THE REMAINDER OF THE WINDING

3.7 STATOR WINDING CLEANING

3.8 STATOR CORE CLEANING AND INSPECTION

3.9 INSPECTION AND TESTING OF GOVERNMENT-FURNISHED STATOR BARS

3.10 INSTALLATION OF STATOR BARS

3.11 TESTS DURING INSTALLATION OF THE STATOR BARS

3.12 PARTIAL DISCHARGE ANALYSIS (PDA) SYSTEM TESTS

3.12.1 General

3.12.2 Test Equipment

3.12.3 PDA Tests

3.12.4 PDA Test Report

3.13 INSPECTING, CLEANING, AND TESTING ROTOR PARTS

3.13.1 Initial Testing of Field Winding

3.13.2 Cleaning of the Rotor Parts

3.13.3 Inspection of the Rotor

3.13.4 Final Testing of Field Winding

3.13.5 Field Winding Varnish

SECTION 48 13 16.00 26 Page 1

3.14 INITIAL STATOR WINDING ACCEPTANCE TESTS

3.15 GENERATOR REASSEMBLY

3.16 FINAL STATOR WINDING ACCEPTANCE TESTS

-- End of Section Table of Contents --

SECTION 48 13 16.00 26 Page 2

3.13.4 Final Testing of Field Winding

After completion of the rotor cleaning, the following tests shall be performed.

a) Insulation Resistance. Insulation resistance shall be measured between winding and ground at 500 V dc.

b) Voltage Drop Test. Following the insulation resistance test, an AC voltage shall be applied to the field leads and the voltage appearing across each coil measured and recorded.

c) AC High Potential Test. Following the voltage drop test, the field winding shall tested at 2500 VAC for one minute.

d) DC Resistance test. Measure the DC resistance of the rotor winding with a Kelvin Bridge or equivalent. Record the temperature at the time of test. Convert the reading to 75 degrees C.

At the completion of the testing, submit for approval the rotor test report.

The report shall include results of tests performed before and after cleaning of the rotor.

3.13.5 Field Winding Varnish

Before the rotor is reinstalled, a coat of insulating varnish shall be applied over the surface of the field winding coils and insulating materials.

3.14 INITIAL STATOR WINDING ACCEPTANCE TESTS

The following tests shall be performed following completion of winding repair. If failures occur during the testing or because of the testing, stop work and report the failures to the COR immediately. Do not attempt any repairs to the winding without COR's approval. Submit for approval initial stator winding acceptance test procedure.

a. Stator Winding Resistance Measurements. Accurate winding resistance measurements shall be made on each phase of the completed stator winding. Within one hour of these measurements, accurate temperature measurements shall be made from each of the stator winding embedded temperature detector readings. The average of the temperature detector readings shall be considered to be the stator ambient temperature at the time of the stator winding resistance measurements and shall be used to calculate the corrected stator winding resistance at 75 degrees C.

b. Insulation Resistance and Polarization Index Tests. Each phase of the stator winding shall be given polarization and insulation resistance tests of 10,000 VDC in accordance with IEEE 43.

At the completion of the testing, an initial stator winding acceptance test report shall be submitted for approval.

3.15 GENERATOR REASSEMBLY

Following approval of the initial acceptance tests, the Government will reassemble the unit within eight (8) weeks. The reassembly will consist of removal of the turbine shaft support, reassembly of the parts described in

SECTION 48 13 16.00 26 Page 15 g2ct9jdf Highlight paragraph 3.4, and post-reassembly measurements and tests.

3.16 FINAL STATOR WINDING ACCEPTANCE TESTS

The following tests shall be performed following completion of generator reassembly. If failures occur during the testing or because of the testing, stop work and report the failures to the COR immediately. Do not attempt any repairs to the winding without COR's approval. Submit for approval the final stator winding acceptance test procedure for each test.

This shall include an outline and description of the test methods and equipment to be employed in the field tests for the completed winding.

a. Each individual phase of the winding shall be high potential tested with the phases not being tested solidly connected to ground. The test shall be in accordance with IEEE C50.12 and IEEE 115. The test value shall be 17 kVAC rms for a period of one minute.

b. Controlled DC Overvoltage Test. A controlled DC overvoltage test shall be performed on each phase of the winding to provide baseline data for future maintenance tests. The test shall be the ramp type at 25 kVDC. It shall be performed in accordance with IEEE 95.

c. Embedded Resistance Temperature Detector (RTD) Tests. Following all overvoltage testing, the following RTD tests shall be performed:

(1) RTD AC Test. The RTD ground insulation shall be tested at a potential of 1500 VAC rms.

(2) RTD Insulation Resistance. The RTD insulation resistance shall be measured at 500 VDC. The insulation resistance measurements on each RTD shall be 100 mega-ohms, minimum.

(3) RTD Element Resistance. The resistance of each RTD shall be determined by subtracting the lead resistance (between the two common leads) from the total resistance measured (from each common lead to the third lead). The values thus obtained shall be corrected to 25 degrees C, recorded, and included in the test report.

At the completion of the testing, submit for approval a final stator winding acceptance test report.

-- End of Section --

SECTION 48 13 16.00 26 Page 16