ML18038A920
| ML18038A920 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/21/1994 |
| From: | Williams J Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| References | |
| GL-89-19, TAC-M74915, TAC-M74916, TAC-M74917, NUDOCS 9409280119 | |
| Download: ML18038A920 (3) | |
Text
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y~ ~m/vs~/afar UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 21, 1994 Hr. Oliver D. Kingsley, Jr.
President, TVA Nuclear and Chief Nuclear Officer Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
SUBJECT:
RESPONSE
TO GENERIC LETTER 89-19 SAFETY IHPLICATIONS OF CONTROL SYSTEHS BROWNS FERRY NUCLEAR PLANT - UNITS 1, 2, AND 3 (TAC NOS. H74915,
- H74916, AND H74917)
Dear Hr. Kingsley:
This letter documents completion of NRC staff review for Generic Letter 89-19, "Safety Implications of Control Systems," for the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3.
By letter dated August 29, 1994, the Tennessee Valley Authority (TVA) provided information requested by the NRC staff on June 28, 1994 regarding Technical Specifications (TS) governing the availability of the reactor vessel overfill protection system instrumentation for BFN Units 1, 2, and 3.
TVA stated that it did not believe that instrumentation associated with the feedwater trip on high water level should be added to BFN Units 1, 2, and 3, TSs.
TVA also confirmed that BFN Units 1, 2, and 3 are bounded by the generic evaluation for Generic Letter 89-19 provided by the Boiling Water Reactor Owner's Group on April 2, 1990.
The NRC's Final Policy Statement on Technical Specifications Improvements for. Nuclear Power Reactors (58 FR 39132) established a specific set of objective criteria as guidance for determining which regulatory requirements and operating restriction should be included in TS.
Criterion 3 of the final policy statement would require that the reactor vessel overfill protection system instrumentation be included in the TS if this instrumentation serves to protect any fuel safety limits.
TVA stated in its August 29, 1994 response that the reactor vessel overfill portection system is not credited for fuel protection for any design basis accident or abnormal operational transient described in the BFN Updated Final Safety Analysis Report (UFSAR).
Therefore, TVA concluded that the instrumentation associated with the feedwater trip on high water level should not be added to the BFN TS.
TVA also stated that plant procedures include provisions to periodically verify the functionality of the overfill protection instrumentation, ensuring its availability to mitigate feedwater overfeed events during
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- 0. Kingsley reactor operation.
TVA stated that BFN 'operating procedures include steps to mitigate reactor vessel overfill events'hould they occur.
- Lastly, TVA stated that a review of the maintenance history of the overfill protection instrumentation, indicates that the availability of this instrumentation is
. nearly 100X.
The NRC staff has reviewed TVA's August 29, 1994 response and the analyses of the BFN design basis accidents and transient events as described in the BFN UFSAR.
The staff has confirmed that the reactor vessel overfill protection system was not credited as the primary instrument protecting the fuel for any design basis accident or abnormal operating transient.
The staff also believes that existing plant procedures are adequate to ensure a high degree of overfill protection instrumentation availability.
Therefore, the NRC staff agrees that inclusion of the reactor vessel overfill protection system instrumentation is not required in the BFN Units 1, 2, and 3 TS.
Please call me at (301) 504-1470 if you have any questions regarding this topic.
Sincerely, Original signed by Joseph F. Williams, Project Manager Project Directorate II-4 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Docket Nos.
50-259, 50-260, and 50-296 cc:
See next page DISTRIBUTION
- Docket Fi.le PUBLIC BFN Rdg. FIle S. Varga OGC ACRS(10)
B. Boger K. Jabbour S.
Rhow DOCUMENT NAME'o receive a copy of this enclosure "E"
Co y with attachment enclosure
- No co y attachment RII 0-14-H-25 0-8-H-3 GL8919. LTR
- document, indicate in the box:
"C" -
opy without OFFICE LA:PDII-4 PM:PDII-4 NICB AD:
NAME BClayt JNI II Iams JMermlel GLai DATE 09/
/94 09/
/9 09/
/94 OFFICIAL RECORD COPY 09/
/94
Mr. Oliver D. Kingsley, Jr.
Tennessee Valley Authority CCC:
Mr. Craven Crowell, Chairman Tennessee Valley Authority ET 12A 400 West Summit Hill Drive Knoxville, TN 37902 Mr.
W. H. Kennoy, Director Tennessee Valley Authority ET 12A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. Johnny H. Hayes, Director Tennessee Valley Authority ET 12A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. 0. J. Zeringue, Sr. Vice President Nuclear Operations Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Dr. Mark 0. Medford, Vice President Engineering 5 Technical Services Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. D.
E.
Nunn, Vice President New Plant Completion Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. R.
D. Machon, Site Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O.
Box 2000
- Decatur, AL 35602 General Counsel Tennessee Valley Authority ET 11H 400 West Summit Hill Drive Knoxville, TN 37902 Mr. Roger W. Huston, Manager Nuclear Licensing and Regulatory Affairs Tennessee Valley Authority 4G Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. T.
D. Shriver Nuclear Assurance and Licensing Browns Ferry Nuclear Plant Tennessee Valley Authority P.O.
Box 2000
- Decatur, AL 35602 Mr. Pedro Salas Site Licensing Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O.
Box 2000
- Decatur, AL 35602 TVA Representative Tennessee Valley Authority 11921 Rockville Pike, Suite 402 Rockville, MD 20852 Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW., Suite 2900
- Atlanta, GA 30323 Mr. Leonard D, Wert Senior Resident Inspector Browns Ferry Nuclear Plant U.S. Nuclear Regulatory Commission 10833 Shaw Road
- Athens, AL 35611 Chairman Limestone County Commission 310 West Washington Street