ML092310466
| 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 AUTHORITY WATTS BAR NUCLEAR PLANT UNIT 2 1
Refurbishment Program August 6, 2009
Agenda
- Introductions
- WBN Unit 2 Material Condition
- WBN Unit 2 Refurbishment Program
2
- WBN Unit 2 Testing Programs
- Conclusion
WBN Unit 2 Material Condition Evaluation of Material Condition Performed Plant Walkdowns
- Identify Missing/Removed Components
- Baseline to Determine Current Configuration of Installed Equipment
- Electrical 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 Condition As-found condition of internal piping shown below.
4 Containment Spray Piping - 676 Pipe Chase
WBN Unit 2 Material Condition Centrifugal Charging Pump 2B-B 5
Pump recently removed for refurbishment. Internal suction piping shown above and discharge at left.
WBN Unit 2 Material Condition Centrifugal Charging Pump 2A-A 6
Pump is currently being removed for refurbishment.
Internal pump casing shown at left and suction piping at right.
WBN Unit 2 Material Condition Damper sent off-site to vendor facility for inspection, evaluation Ventilation Damper 7
and recommended refurbishment and testing requirements.
WBN Unit 2 Refurbishment Program Overview TI-216 WBN 2 Construction Project Refurbishment Program WBN2 Passive Component Evaluation/Refurbishment Process that provides criteria for evaluating passive components to determine if further refurbishment is required.
WBN2 Testing Programs Testing Programs to ensure SSCs meet original licensing, WBN2 Passive Component Evaluation/Refurbishment Procedure/Work Order Work document that provides direction for evaluation and refurbishment, if required of specific passive component/
commodity type.
8 Program ensures WBN2 Plant Equipment meets original:
- Licensing Basis
- Design Basis
- Equipment Vendor Specifications N1302 WBN2 Component Refurbishment Evaluation Component Refurbishment process evaluates each component to assess
- Replacement
- Vendor Refurbishment
- Refurbishment
- No Action Required WBN2 Active Component Refurbishment Procedure/Work Order Work document that provides direction for refurbishment of specific component or active component type.
May include evaluation of passive components during active component work.
g g,
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 Program Refurbishment Program Equipment Scope Safety Related / Non-Quality Related Active / Passive Refurbishment Program Process Steps Identification 9
Classification Inspection/Evaluation Refurbishment/Replacement Component/System Testing Required Outcome Plant meets original licensing, design and equipment vendor specifications
WBN Unit 2 Material Condition COMMODITY TOTAL PROJECT (estimate)
Pumps 80 Motors 90 Breakers 600 Refurbishment/Replacement Commodity Estimates 10 10 Breakers 600 Manual Valves 4000 Air Operated Valves 500 Motor Operated Valves 200 Safety/Relief Valves 300
Refurbishment Program Implementation Overview TI-216 WBN 2 Construction Project Refurbishment Program WBN2 Passive Component Evaluation/Refurbishment Process that provides criteria for evaluating passive components to determine if further refurbishment is required.
WBN2 Testing Programs Testing Programs to ensure SSCs meet original licensing, WBN2 Passive Component Evaluation/Refurbishment Procedure/Work Order Work document that provides direction for evaluation and refurbishment, if required of specific passive component/
commodity type.
11 Program ensures WBN2 Plant Equipment meets original:
- Licensing Basis
- Design Basis
- Equipment Vendor Specifications N1302 WBN2 Component Refurbishment Evaluation Component Refurbishment process evaluates each component to assess
- Replacement
- Vendor Refurbishment
- Refurbishment
- No Action Required WBN2 Active Component Refurbishment Procedure/Work Order Work document that provides direction for refurbishment of specific component or active component type.
May include evaluation of passive components during active component work.
g g,
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 Implementation Obtain 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 performed Missing Aging Affected Total Yes Yes NO NO NO 12 Total Replacement Required Vendor To Refurbish Part Replacement Required Obsolete Other Refurbishment Required Replace with Like for Like RC=A EDCR Required RC=H Complete and Obtain Approvals for Attachment B Update Database Vendor Refurbishment On site RC=J Off site RC=I Replace Required Parts RC=B Inspection RC=D Lubrication RC=E Testing RC=F Cleaning RC=G Functionally Tested RC=C Provide Justification Yes Yes Yes Yes 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 Met Vendor Manuals Design Specifications 13 Design Specifications Piping Standards Operating Experience
Refurbishment Program Implementation Sample Work Order 14 14
Refurbishment Program Implementation Sample Visual I
l I i
15 15 Internal Inspection Data Sheet
Refurbishment Program Implementation 16 16
Refurbishment Program Implementation 12 Swing Check Valve 17 17 The 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 Implementation This 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 di h
d 19 19 actuator diaphragm and valve packing
Refurbishment Program Implementation 20 20
Refurbishment Program Implementation Example Air Operated Valve 21 21 Operated Valve Refurbishment Sheet
Refurbishment Program Implementation 22 22
Refurbishment Program Implementation Example 23 23 p
Valve Packing Data Sheet
Refurbishment Program Implementation Overview TI-216 WBN 2 Construction Project Refurbishment Program WBN2 Passive Component Evaluation/Refurbishment Process that provides criteria for evaluating passive components to determine if further refurbishment is required.
WBN2 Testing Programs Testing Programs to ensure SSCs meet original licensing, WBN2 Passive Component Evaluation/Refurbishment Procedure/Work Order Work document that provides direction for evaluation and refurbishment, if required of specific passive component/
commodity type.
24 Program ensures WBN2 Plant Equipment meets original:
- Licensing Basis
- Design Basis
- Equipment Vendor Specifications N1302 WBN2 Component Refurbishment Evaluation Component Refurbishment process evaluates each component to assess
- Replacement
- Vendor Refurbishment
- Refurbishment
- No Action Required WBN2 Active Component Refurbishment Procedure/Work Order Work document that provides direction for refurbishment of specific component or active component type.
May include evaluation of passive components during active component work.
g g,
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 Programs System Flushing Testing Construction tests Cold Hydrostatic test Hot Functional 25 25 RG 1.68 tests
Conclusion In Summary TVA :
- Established the Existing Condition of WBN Unit 2
- Developed and Implemented Programs to
- Install New Equipment Where Necessary
- Refurbish Existing Equipment 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