ML17255A369
| ML17255A369 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/19/1983 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0820, RTR-NUREG-0821, RTR-NUREG-820, RTR-NUREG-821, TASK-06-10.A, TASK-6-10.A, TASK-RR NUDOCS 8308240010 | |
| Download: ML17255A369 (4) | |
Text
RESULATO INFORMATION DISTRIBUTION STEM (RIDE)
AQCESSION NBR:8308240010 DOC ~ DATE: 83/08/19 NOTARIZED; NO DOCKET. 0 FACIL:50-244 Robert Emmet Ginna Nuclear Planti UniIt ig Rochester G
05000244 AUTH BYNAME AUTHOR AFF ILIATION MAIERgJ,E ~
Rochester Gas 8 Electr ic Corp ~
'REC IP ~ NAME RECIPIENT AFFILIATION GRUTCHF IELDe D ~
Op~rating Reactors Branch 5
SUBJECT:
Advises <<that response time testing of =initiatfng circuitry for containment isolation valves L auxiliary feedwater sys not beneficialgper SEP Topic VI-10,A,Sensor to actuated eguipment bistable testing should be delete'd, DISTRIBUTION CODE:
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IIzzztzz 3Z, ROCHESTER GAS AND ELECTRIC CORPORATION
~ e9 EAST AVENUE, ROCHESTER, N.Y. I4649 JOHN E. MAIER Vice President August 19, 1983 TELEPHONE AREA CODE 7I6 546-2700 Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
SEP Topic VI-lO.A, Response Time Testing R.
E. Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Crutchfield:
This letter is provided in reference to Section 3.3.6.1 of NUREG-0821, the SEP Integrated Plant Safety Assessment for the R. E. Ginna Nuclear Power Plant, December 1982.
During the topic review of SEP Topic VI-lO.A, RG&E committed to perform response time testing of the initiating circuitry, from the sensor to the bistable devices, for the containment isolation valves and auxiliary feedwater system.
RG&E; has performed this testing during the 1981 'and 1982 refueling outages.
Based on our review of this testing, RG&E has not determined it to be beneficial.
This particular portion of the required system response time is a
very small fraction of the total response time (milliseconds vs.
1 to 10 minutes).
The determination of this small time period requires the time of valuable test personnel during plant startup.
RGGE thus proposes that the sensor to actuated equipment bistable testing would be deleted.
Functional testing of the actuated equipment would be retained, and the response time testing of critical functions, such as the containment isolation valves stroke times, diesel generator start and sequencing
- times, pump start times, and rod drop times, would be performed.
This RGGE proposal is comparable to the findings made for other SEP units during the Integrated Assessments.
For example, in NUREG-0820 it was concluded that, from a risk perspective, the effect of including this additional testing was negligible.
Backfitting was not recommended.
RG6E has already proposed a change to the Technical Specifications paragraphs 4.4.6.2 and 4.8.10 in a letter dated August 1, 1983 from John E. Maier to Harold R. Denton.
Very truly yours, 83082400i0 8308i9 PDR ADOCK 05000244 p
PDR J hn E. Maier
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