ML15261A152
| ML15261A152 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 09/24/1997 |
| From: | Ogle C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Mccollum W DUKE POWER CO. |
| References | |
| NUDOCS 9710100011 | |
| Download: ML15261A152 (25) | |
Text
September 24, 1997 Duke Energy Corporation ATTN: Mr. W. R. McCollum Vice President Oconee Site P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
MEETING
SUMMARY
- OCONEE NUCLEAR STATION
Dear Mr. McCollum:
This refers to the open Management meeting that was conducted by mutual request at the Oconee Nuclear Station on September 22, 1997, to discuss Oconee Emergency Power Project initiatives. A list of attendees and a copy of your presentation handout are enclosed.
It is our opinion that this meeting was beneficial in that it provided the NRC staff with a good overview of the Emergency Power Project accomplishments and your plans for a Continued Reliability Assurance Review.
In accordance with Section 2.790(a) of the NRC's "Rules of Practice," Part 2, Title 10. Code of Federal Regulations, a copy of this letter and its enclosures will be placed in the NRC Public Document Room.
Should you have any questions concerning this meeting, please contact us.
Sincerely, Original signed by:
Charles R. Ogle, Chief Reactor Projects Branch 1 Division of Reactor Projects Docket Nos. 50-269. 50-270, 50-287 License Nos. DPR-38, DPR-47, DPR-55
Enclosures:
- 1. List of Attendees
- 2. Licensee Presentation Handouts cc w/encls:
Mr. J. E. Burchfield Compliance
.U Duke Power Company P. 0. Box 1439 Seneca, SC 29679 cc w/encls cont'd:
(See page 2) 2
- 9710100011 970924 PDR ADOCK 05000269 F
DEC 2
cc w/encls cont'd:
cc w/encls cont'd:
Mr. Paul R. Newton Mr. G. A. Copp Legal Department (PBO5E)
Licensing - E050 Duke Power Company Duke Power Company 422 South Church Street P. 0. Box 1007 Charlotte, NC 28242-0001 Charlotte, NC 28201-1007 Mr. Robert P. Gruber Ms. Karen E. Long Executive Director Assistant Attorney General Public Staff - NCUC N. C. Department of Justice P. 0. Box 29520 P. 0. Box 629 Raleigh. NC 27626-0520 Raleigh, NC 27602 Mr. Robert B. Borsum Distribution:
Framatome Technologies D. LaBarge, NRR 1700 Rockville Pike, Suite 525 R. Carroll, RII Rockville, MD 20852 C. Ogle, RII NRC Resident Inspector Mr. J. Michael McGarry, III, Esq.
PUBLIC Winston and Strawn 1400 L Street, NW Washington, D. C. 20005 Dayne H. Brown. Director Division of Radiation Protection N. C. Department of Environmental Health & Natural Resources P. 0. Box 27687 Raleigh, NC 27611-7687 Mr. Max Batavia, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201 County Supervisor of Oconee County Walhalla, SC 29621 Manager, LIS NUS Corporation 2650 McCormick Drive Clearwater, FL 34619-1035 OFFIIATR O
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LIST OF ATTENDEES NUCLEAR REGULATORY COMMMISSION:
L. Reyes, Regional Administrator. Region II (RII)
J. Jaudon. Director, Division of Reactor Safety. RII H. Berkow. Director, Project Directorate 11-2, Office of Nuclear Reactor Regulation L. Plisco, Deputy Director. Division of Reactor Projects, RII DUKE ENERGY CORPORATION:
W. McCollum, Vice President. Oconee Nuclear Station (ONS)
B. Peele, Station Manager, ONS M. Nazar. Engineering Manager, ONS C. Little, Electrical Systems/Equipment Engineering Manager, ONS ENCLOSURE 1
Emergency Power System Duke-NRC Management Meeting September 22, 1997 ENCLOSURE 2 1
OVgER C Organization and Ownership of Emergency Power System
- Clear ownership of the emergency power system exists in the Oconee organization 2
Agenda
- Overview of Oconee Power System
- State of Oconee Emergency Power System
- Status of Recent Issues
- Reliability
- Summary 3
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Overview of Oconee Power
-9 II System
- Oconee Generator through the Normal Auxiliary Transformer
- 230kV Switchyard through the Startup Transformer
- One Keowee Unit is aligned through the Overhead Path and Startup Transformer
- One Keowee Unit is aligned through the Underground Path and Transformer CT4
- The Dedicated 100 kV Path from a Lee Combustion Turbine through Transformer CT5
- Central Switchyard through Transformer CT5
- Oconee Unit Startup Transformers can be shared between the Oconee Units (4160V and 6900V) 5
State of Emergency Power System
- Design Basis
- Testing
- Operations
- Maintenance 6
Design Basis Current State
- Oconee understands the design basis of the emergency power system
- Design Basis Documentation Review is complete for the emergency power system
- Analyses and calculations which support the emergency power system demonstrate that the system meets its design basis
- Design basis test matrices for the emergency power system show that testing and documentation bound the design basis requirements 7
Design Basis Open Items
- Modifications planned to enhance the Design Basis Keowee voltage and frequency out of tolerance protection Lee voltage and frequency out of tolerance protection Keowee penstock isolation
- Open items from the Design Basis Documents 8
Testmg Current State
- Keowee is fully integrated in the testing programs at Oconee
- Lee testing includes the Technical Specification requirements plus Lee Station testing program
- The emergency power system performance monitoring and trending has increased
- Inservice Test Program (IST) has been fully implemented at Keowee
- Periodic testing demonstrates that the emergency power system is maintained at a level commensurate with the Keowee reliability analysis
- Emergency power and engineered safeguards functional test successfully completed in January 1997 9
WE Testing Current State Emergency Power and Engineered Safeguards Functional Test Simulated:
- 1) 3-Unit LOOP with failure of the overhead path
- 2) 3-Unit LOOP with Keowee initially generating to grid
- 3) LOCA/LOOP with a failure resulting in large unscheduled load with the LOCA unit
- 4) LOCA/LOOP - similar to test 3 with Keowee initially generating to the grid
- 5) LOCA/LOOP with a failure of the overhead path with Keowee initially generating to the grid
- 6) LOCA/LOOP with Lee CT as the Source 10
Testing Open Items
- Keowee testing has been reviewed against the applicable Standard Tech Spec surveillances and Reg Guide 1.9
- Thirteen of the fourteen Reg Guide 1.9 surveillances were determined to be applicable to Keowee
- Oconee intends to incorporate changes in the testing program to address the applicable surveillances 11
Operations Current State
- Keowee is fully integrated in the operations programs at Oconee
- Keowee personnel are part of the Oconee Operations group
- Standards of operations established at Keowee
- Lee operators communicate, daily with Oconee to provide the status of the Lee gas turbines and more frequently if a problem arises with a Lee gas turbine
- When supplying backup power to Oconee, Lee is under the control of Oconee Operations 12
.VVER 0
Operations Current State
- Keowee operator training program enhanced 0
- Oconee operators trained on critical Keowee tasks and procedures
- Initial operator training and requalification training includes detailed information about the emergency power system
- Just-In-Time training is provided to operators for predefined high risk activities
- Severe weather is considered by Operations for removing both Keowee units from service for maintenance 13
Operations Current State
- Operating procedure utilized by Lee operators to align Lee as a backup emergency power source is reviewed and approved by Oconee
- This procedure has been in effect since 1984 and has been utilized for numerous evolutions where Lee supplied backup emergency power to Oconee
- Lee operators are included in Oconee's Human Performance training
- Lee operators are trained on the portion of the power system from Lee to the Oconee standby buses 14
Operations Open Items
- Upgrade Lee operations procedure to improve human factors
- Complete Human Performance training for Lee operators
- Enhance Oconee/Lee organizational interfaces
- NRC Approval of Electrical Technical Specification Rewrite 15
%VIER C04 MaintenanceCurrent State
- Keowee is fully integrated in the maintenance programs at Oconee
- Improved field process for determining QA classification of components has been implemented
- Periodic maintenance ensures that the reliability of the emergency power system is maintained at a level commensurate with the Keowee reliability analysis
- Maintenance personnel are trained and qualified for activities performed at Keowee 16
fO Update of Recent Issues
- Keowee Unit 2 Field Breaker Close Coil Failure
- Items from the AIT report Executive Summary 1
17
Update on Recent Issues
- Items from the AIT Report Executive Summary (not already covered)
> Set point change process is being improved Vendor drawings will be updated for DB breakers
> Anti-pump circuitry in DB breakers is under evaluation for potential changes Maintenance Procedure for DB breakers has been revised More frequent Emergency Starts of Keowee to demonstrate reliability 18
Reliability
- The Keowee reliability analysis indicates that the Oconee emergency power system reliability is comparable to a plant with diesel generators
- The emergency power system is monitored and trended in accordance with the maintenance rule and station blackout programs
- The SBO reliability monitoring program indicates improved reliability for Keowee 19
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Continued Reliability Assurance Review
- A Continued Reliability Assurance review of the emergency power system will begin in October
- Industry experts will perform the evaluation to
>> Assess condition of equipment and develop a long range plan for refurbishment or upgrade
>> Assess quality of maintenance program including procedures and training and use of operating experience 0
>> Assess the Keowee and Oconee operator training programs and procedures
>> Make recommendations to assure high reliability through the life of the station
- Completion targeted for the end of the year 21
Overview Summary
- Oconee has clear ownership of the emergency power system
- Oconee has full confidence that the emergency power system will perform its intended function
- Continuous improvements are being made to the emergency power system 22