ML17257A481
| ML17257A481 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/14/1981 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-08-04, TASK-8-4, TASK-RR NUDOCS 8107200145 | |
| Download: ML17257A481 (5) | |
Text
REGULATORY 1
RMATION DISTRIBUTION SYS,1 (RIDS) 4 ACCESSION NBR!8107200145 DOC ~ DATE: 81/07/14 NOTARIZED: NO, DOCKEIT' FACILCSO-244 Robert Emmet-Ginna Nuclear Plant~
Unit ip Rochester G
05000244 AUTH',NAME0 AUTHOR AFF ILI'ATION
'MAIER'r J ~ E's Rochester Gas L Electric Corp, RECIP ~ NAME<
RECIPIENT AFFILIATION CRUTCHF IELD, D ~
Operating, Reactors Branch 5
SUBJECT Updates 8810609 submittal, on SEP Topic VIII. 4 re electrical penetrations of reactor containment<per 810625 telcon;SEP Position 2gper:
NRC 810330 ltr<will be-. used for-circuits w/environmentally qualified equipment inside containmeht; DISTRIBUTION CODE ~
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/// P8//I ROCHESTER GAS AND ELECTRIC CORPORATION o
89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E.
MAILER VICE PRESIDENT TELEPHONE AREA CODE Tld 546.2700 July 14, 1981 rations.
R.
E. Ginna Nuclear Power Plant Docket No. 50-244 Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U.
S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
SEP Topic VIII-4, Electrical Penet I
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Dear Mr. Crutchfield:
This letter will serve as an update to our June 9,
1981 submittal on this SEP Topic in accordance with our June 25, 1981 telephone conversation with a member of your staff, Mr. Raymond Scholl.
RG6E will use SEP Position 2, established in the USNRC's March 30, 1981 letter on this topic, for those electrical circuits which have environmentally qualified equipment inside containment.
Position 2, for the purposes of SEP review, is based on the your staff's interpretation of the Criteria contained in IEEE-317 in that only a single failure need be assumed in each electrical penetration circuit where both the equipment and overcurrent protection devices are qualified.
Specifically, the containment fan circuits described in Section 5.3 of our June 9,
1981 submittal will not be modified.
In addition, the primary breakers of some electrical equip-ment are intentionally deenergized while the plant is at power.
Since the power and control circuits are removed, no fault conditions exist.
Therefore, improvements to the existing're-laying systems on the backup breakers are not required.
35'f 07200i45 Bi07i4 PDR
- DOCK 05000244 P
ROCHESTER GAS AND ELECTRIC C RP.
July 14, 1981 Mr. Dennis M. Crutchfield SHEET NO.
Once all engineering is completed on the circuits requiring improved backup protection, a detailed list will be provided for review along with our schedule for implementation.
Very truly yours,
I R