ML19261B960
| ML19261B960 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/06/1979 |
| From: | Gilleland J TENNESSEE VALLEY AUTHORITY |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7903090145 | |
| Download: ML19261B960 (3) | |
Text
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374o1 500C Chestnut Street Tower II MAR 6 1979 Director of Nuclear Reactor Regulation Attention:
Mr. Thomas A. Ippolito, Chief Branch No. 3 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Ippolito:
In the Matter of the
)
Docket No. 50-296 Tennessee Valley Authority
)
Enclosed are additional revisions to the inservice pump and valve testing program for Browns Ferry Nuclear Plant unit 3 as submitted by my letter to you dated September 29, 1978, and revised by letter dated November 22, 1978.
These revisions are based on our further review of the Browns Ferry design for compatibility with ASME Section XI requirements.
With this submittal you have been provided a complete description of the inservice pump and valve testing program proposed for Browns Ferry unit 3.
We, therefore, respectfully request that ycur staff complete their review of the proposed program as soon as practicable and document NRC approval by letter to us.
We will be pleased to assist your staff in any manner possible in order to expedite the program review and approval.
Very truly yours, s
e AeWLS J. E. Gilleland Assistant Manager of Power Enclosures
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REQUEST FOR RELIEF PV-32 Components -
Standby Liquid Control Pumps Class -
2 Function -
ECCS and alternate reactor shutdown capability Test Requirement -
Running pumps for five minutes before measuring parameters Basis for Relief -
These pumps are tested by circulating liquid to a test tank for 3 minutes and measuring the volume change in the tank.
Running for 5 minutes before measuring parameters is not compatible with the system design.
Alternate Testing -
Measure parameters during 3 minute test.
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I REOUEST FOR RELIEF PV-31 C_omponents -
All pumps Class -
2 and 3 Function -
ECCS and emergency equipment cooling Test Requirement -
Declaring pump inoperable if deviations fall within the " Required Action Range" (IWP-3230(c))
Basis for Relief -
Due to the possibility of instrument problems, and the dif ficulty of obtaining precision necessary under Section XI, and the burden placed on the licensee of performing various other surveillance instructions when unjustifiably declaring equipment inoperable, this requirement should be altered.
Alternate Testing -
If a pump parameter falls within the " Required Action Range", the Shift Engineer and Cognizant Engineer will be immediately notified to determine if an instrumentation problem exists.
Instruments will be checked and the test rerun.
If results of this test are comparable to the previous test, the results will be immediately analyzed versus safety analysis limits to determine acceptability.
If the new values are not acceptable, the pump will be declared inoperable.
If the new values are acceptable, a new set of reference values will be cstablished.
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