ML20035C509
| ML20035C509 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 04/05/1993 |
| From: | Steven Bloom Office of Nuclear Reactor Regulation |
| To: | Tira Patterson OMAHA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20035C510 | List: |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 GL-82-33, TAC-M51091, NUDOCS 9304080051 | |
| Download: ML20035C509 (3) | |
Text
' D.ocket No. 50-285 April 5, 1993 Mr. Terry L. Patterson Division Manager - Nuclear Operations Omaha Public Power District 444 South 16th Street Mall Mail Stop BE/EP4 Omaha, Nebraska 68102-2247
Dear Mr. Patterson:
t
SUBJECT:
FORT CALHOUN STATION, UNIT 1 - INSTRUMENTATION TO FOLLOW THE COURSE OF AN ACCIDENT (REGULATORY GUIDE 1.97) (TAC NO. M51091)
Section 6.2 of Generic Letter 82-33 requested licensees to provide a report on their 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. A large number of exception requests were received from pressurized-water reactor licensees asking thtt the environmental qualification requirement for accumulator level and pressure monitoring instrumentation be relaxed from Category 2.to Category 3, which would allow commercial grade instruments to be used.
Prior to 1987 these requests were denied by the staff. Since then, these exceptions have been considered as an open item until a generic resolution can be found.
The staff has now reviewed the bases for these exceptions and has concluded that no operator action is based on this post-accident instrumentation and that it does not perform a safety function. Since this instrumentation does not perform any post-accident safety function, its qualification requirements can be reduced to Category 3.
A copy of the Safety Evaluation is enclosed.
You have not finalized your commitment regarding installation of instrumentation to monitor accumulator level and pressure.
You may now t
utilize Category 3 instrumentation for accumulator level and pressure.
Please notify me of the actions you plan to take and the schedule for implementation.
If you have any questions regarding this issue, please do not hesitate to contact me at (301) 504-1313.
Sincerely, S N N oh h o N5t Manager Project Directorate IV-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation DISTRIBUT10fj:
5 Docket' File?
NRC & Local PDRs PD4-1 Reading S. Bloom M. Virgilio cc w/ enclosure:
G. Hubbard P. Noonan ACRS(10) (P-315)
See next page OGC(15B18)
A. B. Beach, RIV J. Roe r
A. Hansen B. Marcus (8H3) j OFC LA:PD4-1.1)M PM:PD4-1 D(A):PD4-1 NAME PNoona'n SBl/obpk GHubbard M hh h] h(( ( [
DATE M/O/93
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April 5, 1993 Docket No. 50-285 Mr. Terry L. Patterson Division Manager - Nuclear Operations Omaha Public Power District 444 South 16th Street Mall Mail Stop 8E/EP4 Omaha, Nebraska 68102-2247
Dear Mr. Patterson:
SUBJECT:
FORT CALHOUN STATION, UNIT 1 - INSTRUMENTATION TO FOLLOW THE COURSE OF AN ACCIDENT (REGULATORY GUIDE 1.97) (TAC N0. M51091)
Section 6.2 of Generic Letter 82-33 requested licensees to provide a report on their 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. A large number of exception requests were received from pressurized-water reactor 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 commercial grade instruments to be used.
Prior to 1987 these requests were denied by the staff. Since then, these exceptions have been considered as an open item until a generic resolution can be found.
The staff has now reviewed the bases for these exceptions and has concluded that no operator action is based on this post-accident instrumentation and that it does not perform a safety function.
Since this instrumentation does not perform any post-accident safety function, its qualification requirements can be reduced to Category 3.
A copy of the Safety Evaluation is enclosed.
You have not finalized your commitment regarding installation of instrumentation to monitor accumulator level and pressure.
You may now utilize Category 3 instrumentation for accumulator level and pressure. Please notify me of the actions you plan to take and the schedule for implementation.
If you have any qvrstions regarding this issue, please do not hesitate to contact me at (301) 504-1313.
Sincerely, O
Stevenbloom,ProjectManager Project Directorate IV-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page
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Mr.. Terry L. Patterson
.l 0maha Public Power District Fort Calhoun. Station, Unit No.1 j
CC*
' Harry H. Voigt,.Esg.
LeBoeuf, Lamb, Leiby & MacRae 1875 Connecticut Avenue, NW Washington,~D.C.
20009-5728 Mr. Jack.Jensen, Chairman j
Washington County Board of-Supervisors 1
Blair, Nebraska 68008
?
Mr. Raymond P. Mullikin, Resident Inspector
- U.S. Nuclear Regulatory Commission Post Office Box 309 1
Fort Calhoun, Nebraska 68023 i
- Mr. Charles B. Brinkman, Manager
'I Washington Nuclear Operations Combustion Engineering,-Inc.
i 12300 Twinbrook Parkway, Suite 330
.i Rockville, MD 20852
.i Regional ~ Administrator, Region:IV U.S. Nuclear Regulatory Commission 611.Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Harold Borchert, Director Division of Radiological Health Nebraska Department of Health 301' Centennial Mall, South fi Post Office Box 95007
= Lincoln, Nebraska 68509 Mr. James W. Chase, Manager Fort Calhoun Station Post 0ffice Box 399.
Fort Calhoun, Nebraska 68023 l
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