ML092310466

08/06/2009 Meeting Slides, Tennessee Valley Authority Watts Bar Nuclear Plant Unit 2 Refurbishment Program

ML092310466
Person / Time
Site:	Watts Bar
Issue date:	08/06/2009
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
References
Download: ML092310466 (26)

Text

TENNESSEE VALLEY AUTHORITYWATTS BAR NUCLEAR PLANT UNIT 2 1 1 Refurbishment ProgramAugust 6, 2009 Agenda*Introductions*WBN Unit 2 Material Condition

• WBN Unit 2 Refurbishment Program

• WBN Unit 2 Refurbishment Program ImplementationWBNUit2TtiP 2 2*WBN U n it 2 T es ti ng P rograms*Conclusion WBN Unit 2 Material ConditionEvaluation of Material Condition*Performed Plant Walkdowns*Identify Missing/Removed Components

• Baseline to Determine Current Configuration of Installed Equipment*Electrical 3 3*Mechanical*Civil*Reviewed Quality Assurance Records to Support ASME Section III Program*Results Addressed by Engineering Modifications and Refurbishment Program WBN Unit 2 Material ConditionAs-found condition of internal piping shown below.

4 4Containment Spray Piping -676' Pipe Chase WBN Unit 2 Material ConditionCentrifugal Charging Pump 2B-B 5 5Pump recently removed for refurbishment. Internal suction piping shown above and discharge at left.

WBN Unit 2 Material ConditionCentrifugal Charging Pump 2A-A 6 6Pump is currently being removed for refurbishment.

Internal pump casing shown at left and suction piping at right.

WBN Unit 2 Material ConditionDamper sent off-site to vendor facility for inspection, evaluation Ventilation Damper 7 7 and recommended refurbishment and

testing requirements.

WBN Unit 2 Refurbishment Program OverviewTI-216WBN 2Construction Project Refurbishment ProgramWBN2Passive Component Evaluation/RefurbishmentProcess that provides criteria for evaluating passive components to determine if further refurbishment is required.WBN2Testing ProgramsTesting Programs to ensure SSCs meet ori ginal licensin g , WBN2Passive Component Evaluation/RefurbishmentProcedure/Work OrderWork document that provides direction for evaluation and refurbishment, if required of specific passive component/

commodity type.

8Program ensures WBN2 Plant Equipment meets original:-Licensing Basis-Design Basis-Equipment Vendor SpecificationsN1302WBN2Component RefurbishmentEvaluationComponent Refurbishment process evaluates each component to assess -Replacement-Vendor Refurbishment-Refurbishment-No Action RequiredWBN2Active Component RefurbishmentProcedure/Work OrderWork document that provides direction for refurbishment of specific component or active component type.May include evaluation of passive components during active component work.

gg ,design and equipment vendor specifications at turnover. Testing includes:-System Flushing-Construction Testing-Cold Hydrostatic Tests-Hot Functional Tests

-RG 1.68 Testing WBN Unit 2 Refurbishment ProgramRefurbishment ProgramEquipment Scope*Safety Related / Non-Quality Related*Active / PassiveRefurbishment Program Process Steps*Identification 9 9*Classification*Inspection/Evaluation

• Refurbishment/Replacement

• Component/System Testing Required Outcome*Plant meets original licensing, design and equipment vendor specifications WBN Unit 2 Material ConditionCOMMODITYTOTAL PROJECT (estimate)Pumps80Motors 90 Breakers 600Refurbishment/Replacement Commodity Estimates 10 10 Breakers 600 Manual Valves 4000 Air Operated Valves500 Motor Operated Valves200 Safety/Relief Valves300 Refurbishment Program Im plementation OverviewTI-216WBN 2Construction Project Refurbishment ProgramWBN2Passive Component Evaluation/RefurbishmentProcess that provides criteria for evaluating passive components to determine if further refurbishment is required.WBN2Testing ProgramsTesting Programs to ensure SSCs meet ori ginal licensin g , WBN2Passive Component Evaluation/RefurbishmentProcedure/Work OrderWork document that provides direction for evaluation and refurbishment, if required of specific passive component/

commodity type.

11Program ensures WBN2 Plant Equipment meets original:-Licensing Basis-Design Basis-Equipment Vendor SpecificationsN1302WBN2Component RefurbishmentEvaluationComponent Refurbishment process evaluates each component to assess -Replacement-Vendor Refurbishment-Refurbishment-No Action RequiredWBN2Active Component RefurbishmentProcedure/Work OrderWork document that provides direction for refurbishment of specific component or active component type.May include evaluation of passive components during active component work.

gg ,design and equipment vendor specifications at turnover. Testing includes:-System Flushing-Construction Testing-Cold Hydrostatic Tests-Hot Functional Tests

-RG 1.68 Testing Refurbishment Program ImplementationObtain Unit Two Master Equipment List (MEL) sorted by function with subsets of quality code, Safety Related (SR), Quality Related (QR), Non-Quality Related (NQR), and No Classification (NC)Evaluate each component using CCPP 25402-000-GPP-0000-TI216 as a guide and enter RC for refurbishment to be performedMissingAging AffectedTotal Yes Yes NO NO NO 12Total Replacement RequiredVendor To RefurbishPart Replacement RequiredObsoleteOther Refurbishment RequiredReplace with Like for LikeRC=AEDCR RequiredRC=HComplete and Obtain Approvals for Attachment BUpdate DatabaseVendor RefurbishmentOn site RC=JOff site RC=IReplace Required PartsRC=BInspection RC=DLubrication RC=ETesting RC=F Cleaning RC=GFunctionally TestedRC=CProvide Justification Yes Yes YesYes Yes NO NO NO NO Refurbishment Program Implementation*Implementing Work Instructions/Procedures-Provide Guidance on Refurbishment to be Performed

-Provide Guidance for Refurbishment/Evaluation Requirements to be MetVendor ManualsDesignSpecifications 13Design SpecificationsPiping StandardsOperating Experience Refurbishment Program ImplementationSample Work Order 14 14 Refurbishment Program ImplementationSample Visual IlIi 15 15 Interna l I nspect i on Data Sheet Refurbishment Program Implementation 16 16 Refurbishment Program Implementation12" Swing Check Valve 17 17The refurbishment activity has identified surface indications (right) which could affect the pressure boundary in the bonnet gasket area which will likely require a Code repair.

Refurbishment Program Implementation 18 18 Example Check Valve Data Sheet Refurbishment Program ImplementationThis valve is a 1 1/2", Hammel-Dahl, Globe valve with an A-40 Pneumatic Diaphragm type actuator.

The items subject to refurbishment are the dihd 19 19 actuator di ap hragm an d valve packing Refurbishment Program Implementation 20 20 Refurbishment Program ImplementationExample Air OperatedValve 21 21 Operated Valve Refurbishment

Sheet Refurbishment Program Implementation 22 22 Refurbishment Program Implementation Exam p le 23 23 pValve Packing Data Sheet Refurbishment Program Im plementation OverviewTI-216WBN 2Construction Project Refurbishment ProgramWBN2Passive Component Evaluation/RefurbishmentProcess that provides criteria for evaluating passive components to determine if further refurbishment is required.WBN2Testing ProgramsTesting Programs to ensure SSCs meet ori ginal licensin g , WBN2Passive Component Evaluation/RefurbishmentProcedure/Work OrderWork document that provides direction for evaluation and refurbishment, if required of specific passive component/

commodity type.

24Program ensures WBN2 Plant Equipment meets original:-Licensing Basis-Design Basis-Equipment Vendor SpecificationsN1302WBN2Component RefurbishmentEvaluationComponent Refurbishment process evaluates each component to assess -Replacement-Vendor Refurbishment-Refurbishment-No Action RequiredWBN2Active Component RefurbishmentProcedure/Work OrderWork document that provides direction for refurbishment of specific component or active component type.May include evaluation of passive components during active component work.

gg ,design and equipment vendor specifications at turnover. Testing includes:-System Flushing-Construction Testing-Cold Hydrostatic Tests-Hot Functional Tests

-RG 1.68 Testing WBN Unit 2 Testing ProgramsSystem Flushing Testing

• Construction tests

• Cold Hydrostatic test

• Hot Functional 25 25*RG 1.68 tests ConclusionIn Summary TVA :*Established the Existing Condition of WBN Unit 2

• Developed and Implemented Programs to*Install New Equipment Where Necessary

• RefurbishExistingEquipment 26*Refurbish Existing Equipment*Improve Material Condition and Equipment Performance Where Appropriate*Will Perform Testing to Ensure Systems and Components will Meet Original Design, Licensing and Vendor Specifications