ML19305E307
| ML19305E307 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 04/18/1980 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Parr O Office of Nuclear Reactor Regulation |
| References | |
| 358, NUDOCS 8004230337 | |
| Download: ML19305E307 (2) | |
Text
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VIRGINIA ELecTurc Axn Pownn ConrAxy Itacunoxn,vruoxx xA c:ses:
April 18, 1980 Mr. Harold R. Denton, Director Serial No. 358 Office of Nuclear Reactor Regulation LQA/WRM:rab Attn:
Mr. O. D. Parr, Chief Light Water Reactors Branch No. 3 Docket No. 50-339 Division of Project Management U. S. Nuclear Regulatory Commission License No. NPF-7 Washington, D.C.
20555
Dear Mr. Denton:
In our letter dated April 3,1980 (Serial No. 310), we pro-posed a test program for the pre.:=urizer power operated relief valves which meets the testing requirements of ASME Section XI for Category B valves with the exception of test frequency. Specifically, we proposed the following test program:
(1) The pressurizer power operated relief valves will be cycled once every three months.
(2) The pressurizer power operated relief valves
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will be tested for stroke time, f ail-safe operation, and remote position indication once every eighteen months during cold or refueling shutdown.
In discussions with a member of your Staf f regarding our April 3,1980 letter, several questions were raised relating to radiation ex-posure to test personnal during testing of the pressurizer power operated relief valves.
The cubicle in which the pressurizer power operated relief valves are located is not accessible during normal operations due to radiation levels which prohibit direct measurement of valve stroke times. During operation in MODE 4, the test area measures a radiation level of 100-200 mrem /hr. Testing the pressurizer power operated relief valves takes approximately one to two hours and requires a minimum of two people in the test area to perform; therefore, the conditions cited above preclude the pressurizer power operated relief valves being tested under any conditions other than cold or refueling shutdown without incurring unacceptable radiation exposure to test personnel. Accordingly, the test program out-lined in our April 3,1980 letter was requested because the pressurizer power operated relief valves cannot be tested once every three months as required for ASME Category B valves pursuant to Section XI of the ASME Boiler and Pressure Code without unacceptable test personnel radiation exposure.
8004230 y 7
visons 4 E!2C7RIC Axu Powra COMPANY TO
'Mr. Harold R. Denton 2
We hope this information will assist you in the review of our proposed test program.
Very truly yours,
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B. R. Sylvia Manager-Nuclear Operations and Maintenance
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