ML20057C901
| ML20057C901 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/27/1993 |
| From: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| NUDOCS 9309300126 | |
| Download: ML20057C901 (49) | |
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93 MGu UNITED STATES
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_?g NUCLEAR REGULATORY COMMISSION j
REGtON IV
'8 611 RY AN PLAZA DRIVE, SUITE 400 o,
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AR LINGTON, TEXAS 76011-8064 SEP 27 33 Dockets:
50-445 50-446 Licenses: NPF-87 NPF-89 TU Electric ATTN:
W. J. Cahill, Jr., Group Vice President Nuclear Engineering and Operations Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texas 75201
SUBJECT:
MANAGEMENT MEETING ON THE COMANCHE PEAK STEAM ELECTRIC STATION, UNIT 1, PREPARATIONS FOR THE THIRD REFUELING OUTAGE This refers to the management meeting, open to public observation, conducted at the Personnel Processing Center at the Comanche Peak Steam Electric Station on September 16, 1993, pertaining to the refueling outage scheduled to begin on October 6, 1993. This meeting was attended by those on the attached Attendance List.
The subjects discussed are described in the enclosed Meeting Sumary. Your presentation was beneficial and provided a better understanding of the actions being taken by TV Electric to address les:;ons learned from previous outages and to minimize accident risk during shutdown.
In addition, the Region IV representatives acknowledged your proposal to meet in the future to discuss the results of your outage critique and lessons ler.rned, and we believe such a meeting would be beneficial.
In accordance with Part 2.790 of the NRC's " Rules of Practice," Title 10, Code of Federal Regulations, a copy of this letter will be placed in the NRC's Public Document Room.
Should you have any questions concerning this matter, we will be pleased to discuss them with you.
Sincerely, 0
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_. r' A. Bill Ber.ch, Dire t r F Division of Re -
P o'ects
Enclosure:
Meeting Sumary w/ attachments 9309300126 930927
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TU Electric !.
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TV Electric ATTN: Roger D. Walker, Manager of Regulatory Affairs for Nuclear Engineering Organization l
i Skyway Tower J
400 North Olive Street, L.B. 81 Dallas, Texas 75201 i
Juanita Ellis President - CASE 1426 South Polk Street i
Dallas, Texas 75224
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GDS Associates, Inc.
Suite 720 1850 Parkway Place Marietta, Georgia 30067-8237 TV Electric Bethesda Licensing 3 Metro Center, Suite 610 Bethesda, Maryland 20814 Jorden, Schulte, and Burchette ATTN: William A. Burchette, Esq.
Counsel for Tex-La Electric Cooperative of Texas 1025 Thomas Jefferson St., N.W.
Washington, D.C.
20007 1
i Newman & Holtzinger, P.C.
ATTN: Jack R. Newman, Esq.
1615 L. Street, N.W.
Suite 1000 Washington, D.C.
20036 Texas Department of Licensing & Regulation ATTN:
.G.' R. Bynog, Program Manager /
Chief Inspector Boiler Division P.O. Box 12157, Capitol Station Austin, Texas 78711 Honorable Dale McPherson County Judge P.O. Box 851 Glen Rose, Texas 76043
i.r TU' Electric,
Texas Radiation Control Program Director 1100 West 49th Street t
Austin, Texas 78756 Owen L. Thero, President Quality Technology Company P.O. Box 408 201 West 3rd
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Lebo, Kansas 66856-0408 i
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Section Chief (DRP/TSS) 300021 s
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MEETING
SUMMARY
Licensee:
TU Electric Facility:
Comanche Peak Steam Electric Station (CPSES), Unit 1 License No.: NPF-87 Docket No.: 50-445
Subject:
MANAGEMENT MEETING ON COMANCHE PEAK STEAM ELECTRIC STATION, UNIT 1, REFUELING OUTAGE 3 PREPARATIONS On September 16, 1993, at the CPSES site, representatives of TU Electric made a presentation pertaining to the preparations that have been completed or planned for the refueling outage scheduled to begin on October 6, 1993.
The presentation included an overview of the goals established and the activities planned for the outage, the shutdown risk assessment performed, the various enhancements implemented for this outage, the outage organization, and contingency plans. The licensee responded to several questions by the NRC i
staff, and the meeting was concluded with closing remarks by the licensee.
This meeting was open to public observation.
Attachments:
l.
Attendance List 2.
Licensee Presentation (NRC distribution only) 6 P
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ATTACHMENT 1 ATTENDANCE LIST
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Attendance at the management meeting between NRC and TU Electric on September 16, 1993 TV Electric C. Terry, Vice Prcsident of Operations i
J. Kelley, Vice President on Nuclear Engineering and Support J. Laughlin, Outage Manager M. Blevins, Director of Nuclear Overview R. Walker, Manager of Regulatory.ffairs for the Nuclear Engineering Organization J. Muffett, Manager of Design Engineering / Technical Support J. Barker, Manager, Independent Safety Engineering Group (ISEG)
B. Luengas, ISEG Engineer D. Woodlan, Manager, Docket Licensing T. Hope, Regulatory Compliance Manager R. Bird, Integrated Planning and Scheduling Manager D. Moore, Manager, Maintenance-R. Prince, Radiological Protection Manager J. LaMarca, Engineering Outage Coordinator i
NRC T. Gwynn, Acting Director, Division of Reactor Projects (DRP), Region IV i
L. Yandell, Chief, Reactor Projects Section B, DRP D. Powers, Chief, Maintenance Section, Division of Reactor Safety, Region IV K. Kennedy, Resident Inspector, CPSES G. Werner, Resident Inspector, CPSES J. Donahue, Manager, Operations k
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INTRODUCTION Lance Terry II.
OUTAGE MGMT. PHILOSOPHY Jay Laughlin 1RF03 PLANNING III.
RISK ASSESSMENT Al Saunders i
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OPERATIONS Joe Donahue V.
MAINTENANCE Dave Moore l
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ENGINEERING-Jim Muffett 1
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OUTAGE SCOPE Jay Laughlin LEVEL 1 SCHEDULE VIII.
CLOSING Lance Terry Page 1
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1 OUTAGE MANAGEMENT STRATEGIES e PERFORMANCE
-Build on Successes Of Previous Outages 1
-Continued Improved Personnel Performance l
-Leam From Past Outage Events eSCHEDULE
-Controlled Momentum
-Risk Assessments
-Organizations Own Schedule
-Durations
- Nominal - 70 Days
- Best Result - 59 Days e OUTAGE STRATEGIES
-On Site And Off Site Power Supply Availability
-Unit 2 Operations Page 3
PRE-OUTAGE ORGANIZATION I
h MANAGER. INTEGRATED l
PLANNING & SCilEDULING k
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1 TASK COORDIMTDRS SCIIEDULING SUPERVISOR i
COORDNATORS l
r TYPICALCOORDINATORS ARE-TYPICALCOORDINATORS ARE:
MECIIANICAL MAINTENANCE DIESELGENERAIDR ELECIRICAL MAINTENANCE FUELINSPECTION l&C MAINTENANCE ILRT OITJA110NS SNTIBBERS CIIEMISTRY STEAM GENERA 1DRS PAT J
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OUTAGE IMPLEMENTATION ORGANIZATION MG WE5WRT,
\\M NUMT, NtrtfAR F50tNFFRING NtXIIAR Of1RA110NS OJTAGE MAN ACER S
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- MANAGER, butN AGUI, IESIGM PLANNING AND MADfTENANI.2 GERADONS ENOMEtING SutEDlalNO i
Dt3CPUNE LINE MANAGERS TAR 116 91!
11NE MANAERS TAR (IXRDRA1Tett A 5LlPurv!50R$
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GX)RDENAIORS (IMRDNATORS SUPERYt3OR Page 5 l
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I OUTAGE MANAGEMENT PHILOSOPHY i
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e Senior Manager Involvement.
e Maintain Same Philosophies During Outages and Operations 4
1 e Outage Planning and Control is Inherent to Shutdown Safety.
-Reduced Unplanned Events.
-Reduced Stress on Personnel.
-Improved Response Capability.
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-Control of the use of Overtime.
l e Communication of Critical Safety Functions is Essential.
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OUTAGE CONTROLS i
l e STA-627, " Control of Planned Outages" l
e Pre-Outage Milestones l
e Pre-Outage Performance Indicators i
e Schedules l
eIndependent Risk Assessment Review e Defense In Depth Preparation e Contingency Plans o Communication Products Page8 i
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,,, i r1 1RF03 OUTAGE GOALS AND OBJECTIVES e Complete in s70 Days olmplement Scope within Approved Budget l
e Complete with s 145 Person-Rem Total Exposure e Complete with s1 Contamination per 7000 RCA-Ilours e Complete with 51,200 ft' Dry Active waste and s 120 ft Resin Waste I
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- Complete with s20% Increase in Work Scope l
e Complete with 2 70% Adherence to the Average Weekly Schedule.
o Complete with s3 Security Infractions Per Day of the Outage i
e Complete with 295% Acceptance of QC Inspections
- Complete with No Fires Causing Fire Brigade Activation / Response and s2 Fires that Require Reporting i
e Complete 22 Design Modifications o Complete a Net Reduction of 6 Temporary Modifications i
e During IRF03, Complete all Required Surveillances/PMs and 290% of Corrective Work Orders in Final Approved Outage Schedule e No Releases, Permit Violations, or Reportable Spills e Maintain Chemistry Out of Specification Time s 50 Hours for Each Steam Generator and s100 Hours for the Cooling System e Complete Work on All Control Room Instruments / Annunciators Requiring an Outage o Satisfy 237 of 40 of the Specific " Outage Risk Management Scheduling Guideline' as Described in STA-627, Section' 6.2 Page 9
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LESSONS LEARNED 1
e Past Outage Critiques eTaskTeam Evaluations I
-Clearance i
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-Design / Minor Modifications i
-Temporary Modifications i'
e Trip to Diablo Canyon and Vogtle I
e Industry Publications
-NUMARC 91-06 l
-INPO 924)05 P
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-WANO Meeting on Shutdown Cooling Events i
-DET Report for STP
-Cooper Nuclear Station Shutdown Risk and Outage Management NRC Inspection Report L
e 1RF02 Successes Page 10
EXPECTED OUTAGE IMPROVEMENTS BASED ON LESSONS LEARNED e Integrated Water Movement Plan e Improved De-Gassing Plan eImproved Clearance Plan eIncorporation of Minor Modifications to reduce Temporary Modifications e Reduction of Rad Waste e Enhanced Rad Worker Training e Implementation of Outage Coordination Center e Enhanced Scheduling and Coordination Coverage Page 11
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mI w__Y_ms NUCLEAR OVERVIEW DEPARTMENT PLANNED OUTAGE ACTIVITIES t
PRIOR TO THE OUTAGE DURING THE OUTAGE e Outage Schedule Risk Assessment e Outage Overview Task Team l
e Outage Preparation Surveillances
-Maintenance j
-Clearance /FM/DM Task Team Corrective
-Operations Action Implementation
-Testing (Surv, Snubbers, ISI, ILRT, VT-2,
-Refueling AE)
-RCP Seals, EDG,1MTl
-Plant Computer, MOVs, EDGs, BOP
- Plant Computer
-Refueling, CM, SGs & HX Inspection e Pre-Outage Work Document Review
-Risk Monitoring, Configuration Control e Risk Assessment Indoctrination e Surveillance of Activities e Distributed IOER Information
-Focus on Infrequent /High Risk e Audits
-Maintenance 4
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-Inspection j
-Rad Waste e Inspection of Work in Progress i
Page 13
RISK ASSESSMENT KEY SAFETY FUNCTIONS e Decay Heat Removal e RCS Inventory Control e Electric Power Availability
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e Reactivity Control e Containment 4
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RESULTS 1
INVENTORY CONTROL i
e Core Offload Begins 300 (Approx.) llours After e With Fuel in the Vessel and less than 23 Feet of Shutdown Water Above the Flange:
e Multiple Trains of DilR Except When Offloading
-Multiple Trains of DHR and Support Systems and Loading Core
-Multiple Sources of Makeup a With Cavity Flooded, Single DlIR Train Operations
-When Water Level is Below the Flange There Supported by Three Sources of Power Are Multiple Indications of Water Level e DHR Trains Appropriately Supported by Same e W th RCS Filled or Cavity Flooded:
-Multiple Sources of Makeup e SFP:
- At Least One Train of DliR l
- At least One Cooling Train Available with l
Necessary Support Systems Aligned to Unit 2 e SFP:
-RCS Cavity Drain Lines Valved Off and Blank Flanged i
-Individual Assigned to Monitor for SFP Gate i
Leakage
-Unaffected SFP Full or its Gate Closed and Scaled
-Backup Air Supply to Seals I
Page 15
l RESULTS
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(CONTINUED)
POWER SUPPLY AVAILABIIIIT REACTIVITY CONTROL e At Least Three Sources of Power are Available any e Multiple Sources of Borated Water with Fuel in the Time Fuel is in the Vessel:
Vessel
-7\\vo Sources of Offsite Power and at Least One e Multiple Injection Paths with Fuel in the Vessel EDG with RCS Filled or Cavity Flooded e1\\vo Source Ranges w. h Fuel in the Vessel it f
- I\\vo EDGs and at Least One Source of Offsite Power Whenever There is Less than 23 Feet of Water Above the Flange with Fuel in the Vessel CONTAINMENT e SFP:
e Established Throughout Except for Brief Periods:
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- Aligned to Unit 2 Throughout l
-One 4 Hour Period Exists when Cavity Drain l
Down Begins Before Containment Closure i
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GENERAL ' CONCLUSIONS e Schedule Reviews Showed Safety System Availability Satisfactory to Support Key Safety Functions e System Work Windows Established by Safety Train with Overlaps only i
when Fuel is Offloaded e Availability of Offsite Power Supplies is Maximized e RCS Reduced to "Midloop" Level Only During Core Offload Period e Initial Evaluation of Plant Computer and Transformer Changeout Projects Indicate No Impact on Nuclear Safety e Outage Procedure Provides Good Controls for Risk Management Through Use of Defense in Depth Principles and ISEG Concurrence with Level II Schedule Logic Tie Changes Page 17
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STAFFING AND SHIFT SCHEDULE i
l e Crews to Remain on 5 Shift Rotation e Extra Operations Support From 7 Off Crew Working l
5 Days Split Shift with Half on Nights e Operators Should Average 60 Hours Total e Requal for Licensed Operators to Remain in Effect (INPO Team Training) e Auxiliary Operator Requal Will Ee Suspended Page 19 l
1RF03 SCHEDULE REVIEW e Dedicated Operations Active Unit Supervisor Assigned to Outage e Operations Management Review 1
e Dedicated SROs and ROs Reviewed and Built Clearances i
e Operations Suppat Tailored IPOS for 1RF03 P
Page 20
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i OPERATIONS TRAINING FOR 1RF03 i
e 94-1 Requal
-Mid Loop and Loss of RHR Training
-Startup and Shutdown Training
- 18 Month Cycle and Technical Specification l
Training
-Self Checking Training i
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- 1RF03 Schedule Overview and Training l
e 94-2 Requal
-Clearance Processing Training
-Electrical Systems and Switchyard Training e Operations Management Meeting with Each Crew l
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OPERATIONS LESSONS LEARNED l
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l e Clearance Processing Center Mover to Old SS Office e Dedicated SRO and ROs Involved in Clearance l
i Preparation l
e Electric Outage Power Procedure Developed e 2 Additional Operations Personnel Assigned as i
Outage Coordinators i
e Experienced Fuel Handling SROs e Enhanced Shift Schedule with Milestone SRO Assigned (System Status Control and Mode Entry Dedicatio-J Coordination) l i
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MECHAXICAL MAINTENANCE e RCP l-03 Seal Inspection / Replacement e PRZR Safeties Off-Site Testing e Circ Water Pump 1-01 Tear-down Inspection i
e Circ Water Expansion Joint Replacement e Diesel Generator Overhaul o CCP 1-02 DCN/ Coupling
- RHR 1-01 Mechanical Seal e 400 Corrective Maintenance e 175 Preventive Maintenance Page 25
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ELECTRICAL MAINTENANCE r
e Battery Intercell Rework e CRAC Overhaul j
e Safety Chiller and UPS HVAC Rework e 1MT1 Change-out e Molded Case Circuit Breaker Surveillance e Switchgear and MCC PMs e 480VAC 1E Bus ABT Control Power e 120 Corrective Maintenance
' Page 26
INSTRUMENTATION AND CONTROL e Plant Computer Replacement e EQ SOV Replacements i
e Westinghouse Rod Control Maintenance e Westinghouse Incore Thimble Tube Cleaning eReplace ARV Positioners l
e MFWP Control Power Supply Replacement i
e Deletion of Boron Dilution Mitigation System e Surveillances ePreventive Maintenance l
' Page 27
COSG i
o Plant Computer Replacement e Thermolag e Secondary Sodium Monitoring e DG Sync Check Relays e Cire Water Lubewater Piping Change e Main Turbine Stop/ControlValve Sensors e FRV Platforms e MOV Appendix R Hot Shorts e MSRWeld Repair l
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i ENGINEERING SUPPORT Design Modifications 22 ILRT 1
Minor Modifications 129 t
LLRT's 54 Snubbers 38 Motor Operated Valves 157 Page 30
j 1RF03 ENGINEERING TEAM i
AND UNIT 2 SUPPORT ENGINEERING i
OUTAGE DUTY M---->
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OUTAGE MANAGER DUTY MANAGER COORDINATOR Overall Management Coordinate Long Term ofTeam, Interface with Outage Issues and Outage Duty Manager Engineering Lessons Learned
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STATION MAINTENANCE NUCLEAR SYSTEM FROJECT DESIGN FROCUREMENT TASK ENGINEERING ENGINEERING ENGINEERING ENGINEERING ENGINEERING ENGINEERING COORDINA1DRS Testing:
Ibel Inspation Hewive/ Coordinate Coordinate Support Unit 1 Resolve Parts Snubber Testing LIRh Reload llan FX,TEs, TMs, mms Installation of TEs, FXs, DMs, M MS, Concerns for Inservice Inspection Surveillances Control Rod Equipment Evaluations DMs, ILRT and DMTesting, DM Both Units Corrosion Monitoring O eraldtity Emergent Equipment Activities on Installation and Coating I% gram Acoustic Emissions P
131 PhysicsTests and System Cor.cer.
Unit 2 Unit 2 Needs Eddy CurrentTesting DM Awension Tests for Both Units Acoustic EmissionTesting Ibst Work Unit 2 Support Diesel Generstor Work 1brbine Work Unit 2 Support i
MOVWork Orc Water Work l
WEEK WEEK i
DAYS ENDS l
Minimum Engineering Resource Coverage:
arY-80 so l
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REPLACE MAIN TRANSFORMER IMT-01 l
o Provide for Spare Transformer e Existing Transformer Test Reports Identified Low Discharge Corona in Cooling Oil e New Transformer has Enhanced Cooling and Better Oil Circulation e Old Transformer will be Tested at Factory to Define Upgrades for OtherTransformers e Other Main Transformers will be Refurbished at Site i
i e Refurbished Old Transformer will be Utilized as Spare l
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y" UNIT 1 THERMO-LAG UPGRADES e Approximately $5,200,000 Project Cost e Upgrades Completed
-Thickness Increased Approximately 400 Linear Feet of 3/4" & 1" Conduits e Planned Upgrades
-Pre Outage - 3 Rooms & 30 Junction Boxes
-Outage - 10 Rooms
-Post Outage - 17 Rooms o Cable Trays
-Reinforce Joints on Approximately 2000 Linear Feet of 18" and Larger
-Reinforce Tee Joints on 12" and Larger e Conduits
-Reinforce Approximately 450 Radial Bends and Pull Boxes and 41 " Box-Outs" (All Conduit Sizes) o Airdrops
-Increase Thickness - Less than 1 1/2" 9
-Reinforce End Junctions Page 33 4
PLANT COMPUTER SYSTEM i
REPLACEMENT PROJECT e Replaces Existing Obsolete Computer Systems (ERF Computer, P2500 Computer, Data Acquisition System Computer) Including Simulator e Implementation Currently Schedule to be Completed During 1RF03 Outage e Total Project Cost Approximately $10 Million e New Real Time System Features
- Access to Plant Parameters from Remote Locations
-Greater Display Capability
-Quicker Access to Historical Data
-Remote Data Acquisition Reduces Field Costs
-Readily Available Future Expandability
-ERDS/SPDS Functions
-Capability to Enhance Monitoring of Reduced Inventory ops.
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i TEMPORARY MODIFICATIONS AND OUTAGE ELECTRICAL DISTRIBUTION e Replace 30 Temporary Modifications Needed for Every Refueling Outage with Permanent Modifications e Revised the Temporary Modification (TM) Procedure to Enhance the Process by Streamlining the Draining Control, Interrelating i
TMs, Work Orders and Clearances in OurWork Control Center and Eliminating Redundant Sign Offs.
o Plant Equipment That Needs to be Available During the Refueling Outages (Refueling Machines, Battery Chargers) Will Have a Continuous Power Source 4
e Only 6 Temporary Modifications are Required for 1RF03 Page 35
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1RF03 SCOPE Core Offload / Refueling Snubber Testing Surveillances Steam Generators Preventive Maintenance Incore Thimble Tubes 4
Corrective Maintenance Corrosion Monitoring Diesel Generator ISI Electrical Bus Outages Design Mods Turbine / Generator Minor Mods MOVs RCP Seals Licensing Commitments Acoustic Emission Page 37 s
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I 1RF03 CONTRACTS CONTRACTOR WORK SCOPE Cooper Diesel Generator Fluor Daniel Electrical Support Fluor Daniel Mechanical Maintenance Support General Physics ILRT Siemens Snubber Testing Siemens Turbine Generator ITI Movats MOV Refurbishment Westinghouse Refueling Westinghouse Steam Generator's Eddy Current Westinghouse ISI Page 38
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