ML20214N341
| ML20214N341 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/26/1987 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8706020142 | |
| Download: ML20214N341 (14) | |
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e TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 SN 157B Lookout-Place r
i MAY 261987 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 i
Gentlemen In the Matter of
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Docket Mos. 50-327 Tennessee Valley Authority
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50-328 SEQUOYAH NUCLEAR PLANT (SQN) UNIT 2 - RESTART TEST PROGRAN Reference My letter to you dated April 17, 1987, " Restart Holdpoints" The enclosed report is provided in response to a request by NRC staff members for additional details on the Restart Test Program defined in TVA's Nuclear Performance Plan, Volume 2 Revision 1.
Currently the system functional reviews, which input to the Functional Review Matrix, are approximately 25-percent complete with an expected completion date of June 23, 1987. These individual Functional Review Matrices will be sent to the site resident inspector for information as they are approved by the Joint Test Group. Additional testing (i.e., those toets in addition to normal routine testing which are determined necessary to prove system functionality) will be scheduled as it is identified. A listing of all additional testing identified in the Functional Review Matrices will be submitted for your review by July 1, 1987.
This date supersedes the June 1, 1987 date provided in the referenced letter. This submittal will include a schedule for performance of these tests based on the restart holdpoints identified in the referenced letter.
Very truly yours, TENNESSEE VALLEY AUTHORITY f
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. Celdiey, Director i
Nuclear Safety and Licensing Enclosure cet see page 2 B706020142 G70526 PDR ADOCK 05000327 P
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i I >A Gr An Equal Opportunity Employer C
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. U.S. Nuclear Regulatory Consalesion ec (Enclosure):
i Mr. G. G. Zech, Assistant Director for Inspection Programs Office of Special Projects U.S. Nuclear Regulatory Consalssion 101 Marietta Street, NW, Sulte 2900 Region II Atlanta, Georgia 30323 Mr. J. A. Zwolinski, Asslstant Director for Projects Division of TVA Projects i
Office of Special Projects U.S. Nuclear Regulatory Consalesion 4350 East West Highway EW 322 Bethesda, Maryland 20014 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 l
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ENCLOSURg Restart Test Program Summary PURPOSE The purpose of this summary is to provide additional details on the Restart Test Program (RTP) being implemented at the Sequoyah Nuclear Plant unit 2.
The RTP as defined in Revision 1 to the Nuclear Perfonmance Plan, Volume 2, is being implemented to ensure that Sequoyah unit 2 is comprehensively tested to prove functional readiness for restart. The program logic shown on attachment 1 is being implemented by an " approved" TVA Standard Practice and associated Section Instruction Letters (SIL) as listed under " References" of this summary. The Restart Test Organization is comprised of a Joint Test Group (JTC) and a Restart Test Group (RTG), reporting to the Site Director and receiving technical and program requirements from the Deputy Manager of Nuclear Power.
SCOPE The RTP has been developed to ensure that system functions are adequately proven to operate correctly. This encompasses systems or subsystems as defined under the Design Baseline and Verification Program (DBVP).
The systems reviewed under*the DBVP and which will be reviewed by the RTP are l
listed on attachment 2.
The major elements within the scope of the RTP are as follows:
Identify the " designed" functions for normal and off-normal conditions of the equipment / systems covered by the RTP.
Review these functions against existing test documents to ensure they have been adequately tested.
Review these functions and associated test documents against applicable existing programs (see attachment 3) to ensure that associated test results are not compromised. The above identification and review process is documented on a Functional Review Natrix and incorporated into a runctional Analysis Package.
Develop additional testing by upgrading existing test documents or generating new test documents, as required, to prove correct operation of functions that is determined not to be adequately covered by existing test documents.
Review and approve the above process for technical adequacy and scope by the JTO.
J Implement RTP required tests.
Review all RTP required " test results," both previously completed and those implemented by the RTG, for acceptability.
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.. REFERENCES l
TVA Nuclear Performance Plan, Volume 2 Revision 1, Part III, Section 11.0 SQN Standard Practice SQA197, " Restart Test Program" SQN RTP, Section Instruction Letter SIL-1, " Qualification Program For Restart Test Directors" SQN RTP, Section Instruction Letter SIL-2, " Functional Review Process" SQN RTP, Section Instruction Letter SIL-3, " Joint Test Group" SQN RTP, Section Instruction Letter SIL-4, " Chronological Log" SQN-OSG7-048, Design Baseline & Verification Program Boundary calculation SQN-SQS4-099, Design Baseline & Verification Program Additional Boundary Calculation SQEP-63, Sequoyah Engineering Procedure, "RTP - Functional Test Requirements" RESPONSIBILITIES The primary responsibilities for the managers, advisors, and supervisors as shown on attachment 4 are as follows:
Deputy Nansaer of Nuclear Power - provide overall corporate direction to ensure that the RTP is effectively scoped and implemented in support of the Sequoyah restart plan.
Corporate Test Advisors - assist the Deputy Manager of Nuclear Power by providing advice and assessment of the scope, schedule, and content of the Sequoyah unit 2 RTP.
Site Director - ensure that site coordination of the schedule to implement the RTP is provided and necessary maintenanco and modifications are implemented to support the RTP.
Restart Test Manaaer - responsible for and provide overall direction to the RTG for the following:
Develop RTP documents required for effective implementation of the program.
Staff the RTC with appropriately experienced test and operations personnel in accordance with SIL-1.
Plan RTC activities to ensure interfaces are properly scheduled to avoid compromising the results of the functional review and test process.
Review identified functions to ensure they have been adequately tested.
Develop additional test documents, as necessary, to prove identified functions.
Implement RTP required tests in a manner that will ensure that test results are not compromised by subsequent plant activities.
Review RTP required test results to ensure they adequately 1
prove the correct operation of the identified functions.
Develop a Functional Test Matrix to be used to record the identified functions and where they are properly tested.
j Retest Program Manamer/ Assistant Retest Promram Manager - responsible to
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the Restart Test Manager for the following:
Provide overall interface between the RTC and the Division of Nuclear Engineering (DNE) for RTP-related issues.
Ensure that program documents required to implement the RTP adequately address Corporate commitments and requirements as directed by the Deputy Manager of Nuclear Power.
Provide overall review of the RTP for scope and effectiveness.
Serve as a RTG representative member of the JTC.
Other assigned duties as prescribed by the Restart Test Manager.
Pronram Administrative Supervisor - responsible to the Restart Test Manager for the following:
Ensure that RTG analysis packages are reviewed before being presented to the JTG.
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Provide all necessary RTG planning, scheduling, and statusing support necessary to effectively manage the RTP effort.
Provide clerical support to the RTG.
Other assigned duties as prescribed by the Restart Test Manager.
Restart Test Supervisor - responsible to the Restart Test Manager for the following:
Provide daily direction to the RTG for the implementation of the RTP.
Provide direction'to ensure efficient completion of the functional review.-
Provide direction of the development of appropriate test documents, as needed.
Provide direction for the implementation of the RTP required ratests.
Other assigned duties as prescribed by the Restart-Test Manager.
Westinnhouse Test Representative - responsible to the Restart Test Manager for the following:
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Serve as a RTG representative member on the JTG.
Other assigned duties as prescribed by the Restart Test Manager.
Joint Test Group (Attachment 6)
The JTG provides an overall review of the scope and technical adequacy of the RTP.
The major elements of responsibility are to ensure:
The results of other restart programs for Sequoyah unit 2 that directly affect equipment / system functional performance are considered and addressed by the RTG in verifying adequate testing of equipment / system functions.
The scope and detail of the RTP are adequate to ensure the required equipment / system functions are proven and properly documented.
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New test instructions are developed to implement additional testing to properly prove equipment / system functions not proven and documented in other restart program, documents.
The results of the RTP acceptably demonstrate the functional readiness of the applicable equipment or system.
DEFINITIONS Functional Review Matrix - A matrix developed by the RTG to list the identified functions, the tests that acceptably prove these functions, the programs that were reviewed for potential impact on these functions, the results of this review, and any applicable remarks.
This matrix is primarily used for internal control and tracking by the Restart Test Manager. This matrix will be presented to the JTG as part of a
" Functional Analysis Package" developed by the Restart Test Engineer (RTE).
Functional Test Matrix - A matrix developed by the RTG to list, by system, the identified functions, the results of the functional test review (which includes " test results"), and any remarks.
This matrix will be completed after the final JTG review of the test analysis package. The JTG will review and approve the test matrix before it is transmitted to the Site Director.
Restart Test Program Punch List - A list generated by the RTG to provide an internal method for identifying and tracking open items generated during this review. Open items on this list shall have unique identifiers to facilitate tracking.
Analysis Package - An analysis package prepared by a RTE that shall document his rationale and justification for arriving at his conclusions for the functional review (Functional Analysis Package) and test results review (Test Analysis Package).
PROGRAM The functions to be verified for the systems covered by the RTP are in general the " designed" functions established by DNE under SQEP-63 (See l
" REFERENCES") and any additional function that may be identified as a result of the functional review process.
These functions include normal functions required to support routine operation of the plant, functions required to mitigate FSAR Chapter 15 events, or off-normal system functions identified during this review that may require additional verification.
During the functional review process, instances will occur where a function of one system is required to support the function of another system (see attachment 5 for types of interfaces). These interface functions are tracked internally to the RTG to ensure that they are adequately addressed during the functional review process.
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r The system functions are reviewed against existing test documents to verify that they have received adequate testing.
Should a function not be adequately addressed in an existing test document, the RTE determines if the existing test documents may be upgraded or a new test document must be generated. The test documents that are identified as required by the RTE are then reviewed against applicable existing programs (see attachment 3) to verify that the validity of the implemented results will not be compromised. The RTE's decisions are documented in a functional analysis report that is contained in the Functional Analysis Package.
A punch list is generated and maintained throughout the RTP to identify and track all open items or unresolved questions resulting from RTG activities.
Included in the punch list are such items as CAQRs, any special testing identified by the program and not yet performed, or any other open items resulting from the functional review.
The RTE's Functional Analysis Package is then reviewed for technical adequacy and thoroughness and approved by the JTG.
The required RTP tests, that have not yet been completed, will then be scheduled for implementation.
The required RTP " test results" are reviewed to ensure that the acceptance criteria were fully met and any test deficiencies are thoroughly documented and tracked. The results of this review are documented in a test analysis report that is contained in the Test Analysis Package.
The RTE's Test Analysis Package is then reviewed by the JTG for technical adequacy. Upon approval, the JTG forwards the Test Analysis Package to Plant Operations Review Committee / Plant Manager (PORC/PM) for final review and approval.
The final Functional Test Matrix is then prepared by the RTG with all 7
approved " test results" referenced and maintained as a quality document.
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ATTAC11 MENT 1 t-GENERAL SEQUOYAll 2 RESTART TEST PROGRAM LOGIC APE All-ITV N IEVittP JIC fEVIEW/
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r RESTART TEST PROGRAN - SYSTEMS - SEQUOYAH UNIT 2 DBVP/RTP Main Steam Main Feedwater Auxiliary Feedwater Steam Generator Blowdown Fuel Oil High Press Fire Protection Ventilation Reactor / Auxiliary Building Vent.
Control Building Environmental Control Air Conditioning Control Air Post Accident Sampling Facility Feedwater Controls Domineralized Water Ice Condenser Chemical Volume Control System Safety Injection Emergency Gas Treatment System Essential Raw Cooling Water Reactor Coolant System Component Cooling System Containment Spray Residual Heat Removal Waste Disposal Spent Fuel Pit Cooling Primary Water Emergency Diesel Generator Hydrogen Mitigation Upper Head Injection Containment Isolation Radiation Monitoring Neutron Monitoring Reactor Protection Vital AC Power Vital DC Power Auxiliary Power - 480V Auxiliary Power - 6.9kV
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ATTACHMENT 3 RESTART TEST PROGRAM FUNCTIONAL-TEST MATRIX i
SEQUOYAH UNIT 2 DNE DETERMINED F
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Attachment E SYSTEM INTERFACES Gas pressure (Purges Fluid inventory supply blankets, pressurizing medium Auxiliary equipment Ventilation &
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I&C power S STEM FUNCTION Prime movers I&C sensors Control elements (i.e. valves, etc.)
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ATTACHMENT 6 SEOUOYAH UNIT 2 RESTART-TEST PROGRAM JOINT TEST GROUP i
CHAIRMAN SECRETARY OPERATIONS TECHNICAL SUPPORT o
REPRESENTATIVE REPRESENTATIVE RETEST PROGRAM DNE MANAGER REPRESENTATIVE i
NSSS TEST QUALITY ASSURANCE REPRESENTATIVE REPRESENTATIVE O
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