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St. Marys 5kV Switchgear SSM5KV20

SECTION 26 08 01.00 26

SYSTEMS TESTING AND COMMISSIONING

PART 1 GENERAL

1.1 DESCRIPTION

a. This Section covers the testing and commissioning of electrical equipment including 5 kV switchgear, dry-type transformer, medium voltage cable and other equipment installed under this Contract. This Section covers the outage sequencing of energized equipment. This Section expands and clarifies requirements described in Sections

26 05 13.00 26 MEDIUM-VOLTAGE CABLE, 26 12 16.00 26 DRY-TYPE

TRANSFORMERS, and 26 13 26.00 26 METAL-CLAD SWITCHGEAR. This Section applies to all sections of these specifications unless otherwise indicated in the individual sections.

b. The work under this contract alters and interfaces with numerous systems within an operating powerhouse. Therefore, final acceptance of installed equipment shall consist of: the commissioning of the installed work and the verification of the overall Government system.

The Contractor has lead responsibility for the commissioning of the installed work and the Government has lead responsibility for the verification of the overall Government system. Contractor shall coordinate with transformer manufacturer, the 5 kV switchgear manufacturer, and the Contracting Officer.

c. The transformer manufacturer is required to provide transformer commissioning services per a separate contract.

d. The Contractor shall furnish labor and material to accomplish and complete the commissioning as specified herein.

1.2 REFERENCED PUBLICATIONS

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 1248 (1998; R 2007) Guide for the Commissioning of Electrical Systems in Hydroelectric Power Plants

IEEE C57.12.91 (2011) Standard Test Code for Dry-Type Distribution and Power Transformers

IEEE C37.09 (1999; AMD 1 2005; Corr 1 2007; R 2007;

Errata 2007; Amendment B 2011) Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

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INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2017; Errata 2017) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 , SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Commissioning Engineer's Qualifications ; G HDC

SD-05 Design Data

Commissioning Plan ; G HDC

SD-06 Test Reports

Conductor Insulation Resistance Test Report per 26 05 19.00 26 , Insulated Wire and Cable and 26 05 13.00 26, Medium-voltage Cable ;

G HDC

Conductor Continuity and Labeling Test Report ; G HDC

Circuit Functionality Test Report ; G HDC

Commissioning Report ; G HDC

1.4 GENERAL REQUIREMENTS

1.4.1 Sequence of Work

All work shall be in accordance with the provisions of EM 385-1-1 and the Project Hazardous Energy Control Program (Safe Clearance Procedure). Work under this Contract will require outages to energized systems. Proper sequencing of the work shall be required to minimize the duration of all outages of the generating units and the DC system.

1.4.2 Constraints and Outages

The construction sequence will be critical in maintaining availability and operability of the plant during the change-out of the equipment. Outages shall be kept to a minimum and shall be coordinated with the Government Quality Assurance Representative (GQAR) prior to submittal of the Contractor's Commissioning Plan. The Government must be notified 14 days in advance of beginning any work requiring a clearance or equipment outage and 45 days in advance of beginning work requiring a clearance or equipment outage on Cloverland Electric owned or operated equipment. It

SECTION 26 08 01.00 26 Page 2 is expected that the Contractor will maximize the pre-outage work and minimize the outage work. The minimum constraints are as follows:

a. Only one main generating unit will be allowed to be out of service at any one time for the removal of existing equipment, installation, and testing of the new equipment. Refer to SECTION 01 35 13 SPECIAL PROJECT PROCEDURES for details.

b. Station service outages are limited to those detailed in SECTION

01 35 13 SPECIAL WORK PROCEDURES.

c. Temporary power shall be provided during the outage to Compensating Works, Heat and Vent, Station Service 480V Transformer, Canal Feeder 1, and Canal Feeder 2 .

1.5 COMMISSIONING ENGINEER

1.5.1 Qualifications

The Contractor's Commissioning Engineer must have a minimum five years experience in preparing commissioning plans and performing commissioning testing of electrical equipment of comparable type and complexity in the powerhouse. The Commissioning Engineer's qualifications shall be submitted in résumé format for approval.

1.5.2 General Responsibilities of Contractor's Commissioning Engineer

The Commissioning Engineer's responsibilities include, but not be limited to the following:

a. Preparation and execution of the testing and commissioning plans, including activities of all involved subcontractors.

b. Participation in testing coordination meetings necessary to develop and execute the above plans.

c. Submit detailed Commissioning Plan

d. Oversee the testing of installed equipment.

e. Certify by signature and submit Commissioning Report.

f. During testing where the Government has lead responsibility, participate in testing coordination meetings to resolve interface issues between Contractor-installed equipment and the overall Government system.

1.5.3 Responsibilities of Contractor's Commissioning Engineer During Contractor's Commissioning

The responsibilities of Contractor's Commissioning Engineer During Contractor's Commissioning shall include, but not limited to:

a. Attend commissioning coordination meetings.

b. Certify and submit Commissioning Report , including Conductor Insulation Resistance Test Report , Conductor Continuity and Labeling

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Test Report , and Circuit Functionality Test Report .

1.5.4 Responsibilities of Contractor's Commissioning Engineer During Government's Commissioning

The responsibilities of Contractor's Commissioning Engineer During the Government's Commissioning shall include, but not limited to:

a. Attend commissioning coordination meetings.

b. Provide one or more fully qualified craftsmen to assist during system commissioning for both the Contractor's Commissioning and Testing, and the Government's Commissioning and Testing.

1.6 COMMISSIONING PLAN

Prepare a commissioning plan that incorporates all Contract requirements, and the equipment manufacturer's commissioning activities. Submit for approval 21 days prior to commissioning. The plan shall be submitted for all equipment installed by the Contractor, including existing equipment necessary to be removed and reinstalled. The plan shall be specifically developed to confirm operation of individual components, as well as complete systems. The plan shall include, but not be limited to, the following:

a. A schedule for all Contractor, Government, and equipment manufacturer commissioning activities.

b. Equipment inspections, detailed step-by-step test procedures and reports to meet the requirements of the technical specifications, manufacturer recommendations, and applicable guidance for tests and test descriptions given in IEEE 1248 for all installed equipment.

c. Calibration information to include a list of each instrument used during testing, stating calibration requirements by the instrument manufacturer and the past year calibration history of the instrument.

d. Redline drawings indicating the as-installed condition of all equipment and wiring at the time of commissioning.

e. Implement Government provided protective relay settings.

Government will perform bench testing of protective relays, instrumentation transformer testing, and settings verification within relays. The commissioning plan shall identify areas of overlap and clearly delineate responsibilities.

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.1 EQUIPMENT

Following installation, the equipment shall be inspected, tested, and commissioned following applicable procedures listed in IEEE 1248 , NETA ATS, and applicable equipment specific specifications.

3.2 FIELD TESTING

a. During the construction and installation of electrical equipment, SECTION 26 08 01.00 26 Page 4 the contractor shall perform the necessary inspections to ensure that the installation is in accordance with manufacturer's instructions and the design documents.

b. Detailed testing shall be performed on all installed equipment as specified in the Sections listed in paragraph DESCRIPTION to ensure that operation and performance conform to contract documents. All tests shall be witnessed by the GQAR. The Contractor shall notify the Government not less than 30 days prior to starting any test and confirm start date with 7 days advance notice.

c. The following data shall be recorded and submitted for all tests:

(1) Description of test

(2) Description of equipment tested

(3) Calibration information to include a list of each instrument used during testing, stating calibration requirements by the instrument manufacturer and the calibration history of the instrument. The calibration history shall include dates calibrated and calibration procedures used.

(4) Description of operation of all affected system components

3.3 CONTRACTOR'S COMMISSIONING AND TESTING

The following testing is required as part of the Contractor's commissioning process:

3.3.1 Insulation Resistance Test (100% of all Conductors)

All conductors shall successfully pass an insulation resistance test at the values specified within the individual specification sections. The contractor shall tabulate these test results, certify them, and submit the results prior to the system commissioning.

3.3.2 Conductor Continuity Test (100% of all Conductors)

All conductors shall successfully pass a continuity test between each termination. proper termination shall also be verified for each conductor. The contractor shall tabulate these results, certify them, and submit them prior to the system commissioning.

3.3.3 Point to Point Wiring Check

Check all conductors installed by the contractor in a complete point to point wiring check, verifying that each conductor has the proper source and destination connections. Verify that conductors and terminations are properly labeled. The contractor shall tabulate these results, certify them, and submit them prior to the system commissioning.

3.3.4 Phase Tests

Test all potential transformer and current transformer circuits to prove that the polarity and phase angle is correct for the circuits those devices feed. The contractor shall submit in the procedure how these tests will be accomplished. During the course of these tests any discrepancies shall be corrected by the contractor and the test

SECTION 26 08 01.00 26 Page 5 reperformed to verify corrections. Any discrepancies shall be documented in the test report along with an indication of what was changed. At the conclusion of the successful test, label each potential transformer, current transformer, and each medium voltage cable pothead with its associated phase (example: "A", "B", or "C").

3.3.5 Circuit Functionality Test

All circuits installed by the contractor shall be given a complete functionality test, verifying that devices operate properly, and that the function of the circuit is as designed. This shall include tracking and verifying energy and/or signals are present at each point in the circuit at the proper time and in the proper sequence. The contractor shall also verify that the conductors and terminations are properly labeled. The contractor shall tabulate these results, certify them, and submit them prior to the system commissioning.

3.4 GOVERNMENT TESTING

Prior to energization and after the Contractor has completed all testing required under these specifications, the Government will conduct an independent verification of the results and a system testing procedure.

The Contractor shall participate in these activities by reviewing and becoming familiar with the Government testing plan, and by participating in the testing process. The Contractor shall provide one or more fully qualified craftsmen familiar with the work for five 10 hour days (total of 50 hours) for 5 kV switchgear and 10 hours for transformer TA to assist in the testing by taking readings, observing equipment, verifying settings, and making adjustments as instructed by the Government's Testing Engineer.

3.5 COMMISSIONING AND TESTING EQUIPMENT

Provide individual commissioning plans for each equipment or group of equipment. Where new equipment interfaces with existing Government equipment, the responsibilities have been differentiated. The list contains, but is not limited to the following:

COMMI SSI ONI NG AND TESTI NG LI ST

EQUIPMENT RESPONSIBILITY SPECIFICATION

SECTION

FACTORY

TESTS

PARAGRAPH

FIELD TESTS

PARAGRAPHS

Transformer TA Contractor 26 12 16.00 26 3.1 3.3

5 kV Switchgear Contractor 26 13 13.00 26 3.2 3.4

Medium Voltage Cable System

Contractor 26 05 13.00 26 N/A 3.2

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1.6 COMMISSIONING PLAN