ML20059L734
| ML20059L734 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 11/10/1993 |
| From: | Shiraki C Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20059L736 | List: |
| References | |
| TAC-M86112, NUDOCS 9311170337 | |
| Download: ML20059L734 (3) | |
Text
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November 10, 1993 Docket Nos. 50-295 and 50-304 DISTRIBUTION:
o -
DocketJ11es 1 JRoe Mr. D. L. Farrar NRC & Local PDRs JDyer.
Manager, Nuclear Regulatory Services PDIII-2 r/f CMoore Commonwealth Edison Company JZwolinski CShiraki Executive Towers West III, Suite 500 AHansen BMarcus 1400 OPUS Place ACRS (10)
OGC Downers Grove, Illinois 60515 BClayton, RIII
Dear Mr. Farrar:
SUBJECT:
INSTRUMENTATION TO FOLLOW THE COURSE OF AN ACCIDENT - REGULATORY GUIDE I.97 (TAC NOS. M86112 AND M86113)
Section 6.2 of Generic Letter 82-3? r quested that each licensee report on its
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implementation of Regulatory Guide 1.97, Revision 2, including methods for complying with the Commission's regulations and supporting technical justification for any proposed alternatives or deviations. Numerous exceptiot requests were received from PWR licensees asking that the environmental qualO1 cation requirement for accumulator level and pressure monitoring instrumentation be relaxed from Category 2 to Category 3, which would allow use of commercial grade instruments.
Prior to 1987 these requests were denied by the staff.
Since then, these exceptions have been considered an open item until a generic resolution was found.
The staff has completed its review of the bases for these exception requests and has concluded that post-accident monitoring of the accumulator volume and pressure does not serve a safety function and that no operator actions that would require Category 2 qualification of the instrumentation are based on the information.
Therefore, in lieu of Category 2 qualification, Category 3 qualification of this instrumentation is acceptable. A copy of the Safety Evaluation is enclosed.
Please notify the staff of the actions you plan to take and the schedule for implementation.
If you have any questions regarding this issue, please contact me at (301) 504-3101 Sincerely, Crgind S!cned By:
Clyde Y. Shiraki, Project Manager Project Directorate III-2 y g n rf )
Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation i
Enclosure:
)
I Safety Evaluation cc w/enclosuie:
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See next page (MPkIII-2 PM:PDIII-g D:PDIII-2 0FC
\\Cl4 N CSHIRAKI JDYER M NAME b/N/93 6/ 893
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/ /93
/ /93
/ /93 DATE
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COPY (ES'/NO
._(fES)NO YES 0 YES/NO YES/NO YES/NO 9311170337 931110 PDR ADOCK 05000295 P
November 10, 1993 Docket Nos. 50-295 and 50-304 DISTRfBUTION:
Docket Files JRoe Mr. D. L. Farrar NRC & Lo' cal PDRs.
JDyer i
Manager, Nuclear Regulatory Services PDIII-2 r/f CMoore Commonwealth Edison Company JZwolinski CShiraki Executive Towers West III, Suite 500 AHansen BMarcus 1400 OPUS Place ACRS (10)
OGC Downers Grove, Illinois 60515 BClayton, RIII
Dear Mr. Farrar:
SUBJECT:
INSTRUMENTATION TO FOLLOW THE COURSE OF AN ACCIDENT.- REGULATORY GUIDE 1.97 (TAC NOS. M86112 AND M86113)
Section 6.2 of Generic Letter 82-33 requested that each licensee report on its implementation of Regulatory Guide 1.97, Revision 2, including methods for complying with the Commission's regulations and supporting technical justification for any proposed alternatives or deviations. Numerous exception requests were received from PWR licensees asking that the environmental qualification requirement for accumulator level and pressure monitoring instrumentation be relaxed from Category 2 to Category 3, which would allow use of commercial grade instruments.
Prior to 1987 these requests were denied by the staff.
Since then, these exceptions have been considered an open item until a generic resolution was found.
The staff has completed its review of the bases for these exception requests and has concluded that post-accident monitoring of the accumulator volume and pressure does not serve a safety function and that no operator actions that would require Category 2 qualification of the instrumentation are based on the information.
Therefore, in lieu of Category 2 qualification, Category 3 qualification of this instrumentation is acceptable. A copy of the Safety Evaluation is enclosed.
Please notify the staff of the actions you plan to take and the schedule for implementation.
If you have any questions regarding this issue, please contact me at (301) 504-3101.
Sincerely, I
OQind Signed By:
Clyde Y. Shiraki, Project Manager Project Directorate III-2 Division of Reacter Projects - III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page (14Pk111-2 PM:PDIII-@
D:PDIII-2 0FC NAME \\CMON CSHIRAKI JDYER SIIL
\\k 9/93 6/ 893 II //v /93
/ /93
/ /93
/ /93 i
DATE
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/
COPY
/NO kES)NO YESkOI YES/NO YES/NO YES/NO
i Mr. D. L. Farrar Zion Nuclear Power Station Commonwealth Edison Company Unit Nos. I and 2 cc:
Michael I. Miller, Esquire Sidley and Austin One First National Plaza Chicago, Illinois 60603 i
Dr. Cecil Lue-Hing Director of Research and Development Metropolitan Sanitary District i
of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 l
Phillip Steptoe, Esquire Sidley and Austin l
One First National Plaza Chicago, Illinois 60603 Mayor of Zion Zion, Illinois 60099 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety l
1035 Outer Park Drive Springfield, Illinois 62704 U.S. Nuclear Regulatory Commission Resident Inspectors Office 105 Shiloh Blvd.
Zion, Illinois 60099 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph Suite 11-300 Chicago, Illinois 60601
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