ML20041F719
| ML20041F719 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 03/09/1982 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Linder F DAIRYLAND POWER COOPERATIVE |
| Shared Package | |
| ML20041F720 | List: |
| References | |
| TASK-03-01, TASK-07-03, TASK-3-1, TASK-7-3, TASK-RR LSO5-82-03-059, LSO5-82-3-59, NUDOCS 8203170338 | |
| Download: ML20041F719 (4) | |
Text
1 m-J' March 9,1982 to o
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"EM :t Mr. Frank Linder General Manager Dairyland Power Cooperative 2615 East Avenue South Lacrosse, Wisconsin 54601
Dear Mr. Linder:
SUBJECT:
SEP TOPICS III-1, CLASSIFICATION OF STRUCTURES. COMPONENTS AND SYSTEMS AND VII-3, SAFETY SHUTDOWN SYSTEMS - DRAFT SAFETY EVALUATION REPORT FOR LACROSSE is the staff's draft safety evaluation report (SER) on the electrical aspects of SEP Topics III-1 and VII-3. is our contractor's technical evaluation of your plant. This technical evaluation is the basis for Enclosure 1.
The staff recomends that an additional electrical source be provided so that safe shutdown operations can be conducted from the control room in the event of a failure of an instrument bus. We also recomend a second M
shutdown system level controller be added for the same reason.
3.r This topic assessment may be revised tM;(3 The need to actually implement these changes will be d9temined during the integrated plant safety assessment.
in the future if your facility design is changed or if NRC criteria relating to this topic are modified before the integrated assessment is completed. Ann!
c*shky Sincerely, ts, IIEw'9 l
Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 i
i Division of Licensing
Enclosures:
As stated cc w/ enclosures:
See next page f87 f')
8203170338 820309
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Mr. Frank Linder CC Fritz Schubert, Esquire U. S. Environmental Protection Staff Attorney Agency Dairyland Power Cooperative Federal Activities Branch 2615 East Avenue South Region V Office La Crosse, Wisconsin 54601 ATTN: Regional Radiation Representative 230 South Dearborn Street O. S. Heistand, Jr., Esquire Chicago, Illinois 60604 Morgan, Lewis & Bockius 1800 M Street, N. W.
Mr. John H. Buck Washington, D. C.
20036 Atomic Safety and Licensing Appeal Bot.rd U. S. Nuclear Regulatory Commission Mr. R. E. Shimshak Washington, D. C.
20555 La Crosse Bot. ling Water Reactor Dairyland Power Cooperative Dr. Lawrence R. Quarles P. O. Box 135 Kendal at Longwood, Apt. 51 Genoa, Wisconsin 54632 Kenneth Sca! ;, Pennsylvania 19348 Ms. Anne K. Morse Charles Bechhoefer, Esq., Chairman Coulee Region Energy Coalition Atr.mic Safety and Licensing Board P. O. Box 1583 U. S. Nuclear Regulatory Commission La' Crosse, Wisconsin 54601 Washington, D. C.
20555
- La Crosse Public Library Dr. George C. Anderson 800 Main Street Department of Oceanography La Crosse, Wisconsin 54601 University of Washington Seattle, Washington 98195 U. S. Nuclear Regulatory Commission Resident Inspectors Office Mr. Ralph S. Decker Rural Route #1, Box 276 Route 4, Box 1900
. Genoa, Wisconsin 54632 Cambridge, Maryland 21613 Town Chairman Thomas S. Moore Town of Genoa Atomic Safety and Licensing Appeal Board Route 1 U. S. Nuclear Regulatory Commission l
Genoa, Wisconsin 54632 Washington, D. C.
20555 Chairman, Public Service Commission Mr. George R. Nygaard of Wisconsin Coulee Region Energy Coalition Hill Farms State Office Building 2307 East Avenue Madison, Wisconsin 53702 Lacrosse, Wisconsin 54601 i
Alans.Rosenthal,Esq., Chairman James G. Keppler, Regional Administrator Atomic Safety and Licensing Appeal Board Nuclear Regulatory Commission, Region III U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement Washington, D. C.
20555 799 Roosevelt Road I
Glen Ellyn, Illinois 60137 Mr. Frederick Milton Olsen, III 609 North lith Street I
Lacrosse, Wisconsin 54601
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SYSTEMATIC'EVALUATIM PROGRAM l
TOPICS !!!-1 AND VII-3 LACROSSE TOPICS: III-1 CLASSIFICATION OF STRUCTURES, COMPONENTS AND SYSTEMS VII-3 SYSTEMS REQUIRED FOR SAFE SHUTDOWN I.
INTRODUCTION The systems aspects of the review of Systems Required for Safe Shutdown was conducted as part of Topic V-10.B (RHR Reliability). This safety evaluattor: is limited to the electrical instrumentation and control sys-tens identified as being required for safe shutdown. Plant systems that are needed to achieve and maintain a safe shutdown condition of the plant, including the capability for prompt hot shutdown of the reactor from outside the control room were reviewed.
Included also, was a :re-view of the design capability and method of bringing the plant from a high pressure condition to low pressure cooling assuming the use of only-safety grade equipment. The objectives of the review were to assure:
The design adequacy of the safe shutdown system to (a) initiate (1) automatically the operation of appropriate systems, including the reactivity control systems, such that specified acceptable fuel design limits are not exceeded as a result of anticipated opera-tional occurrences or postulated accidents and (b) initiate the operation of systems and components required to bring the plant to a safe shutdown.
That the required systems and equipment, including necessary in-(2) strumentation and controls to maintain the unit in a safe condi-tion during hot shutdown, are located at appropriate places outside the control room and have a potential capability for
'ubsequent cold shutdown of the reactor through the suitable procedures.
That only safety grade equipment is required to bring the reactor (3) coolant system from a high pressure condition to a low pressure cooling condition.
In reviewing the SDCS and systems required for safe shutdown, the major electrical components and systems required for the protection of public health and safety were identified.
II.
REVIEW CRITERIA The review criteria are presented in Section 2 of EG&G Report 0058J,
" Electrical, Instrumentation, and Control Features of Systems Required for Safe Shutdown."
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2 III.
RELATED SAFE 1/ TOPICS AND INTERFACES Review areas outside the scope of this topic and safety topics that are dependent on the present topic information for completion are identified in Section 3 of EG&G Report 0058J.
IV.
REVIEW GUIDELINES The review guidelines are presented in Section 4 of EG&G Report 0058J.
V.
EVALUATION Section 7 of EG&G Report 0058J lists the major electrical components and systems that are required at Lacrosse to protect the public health and safety.
As noted in EG&G Report 0058J, the systems required to take Lacrosse from hot shutdown to cold shutdown, assuming only offsite power is available or only onsite power is available and a single failure, are capable of initiation to bring the plant to safe shutdown and are in compliance with current licensing criteria and the safety objectives of SEP Topic VII-3, except that redundant instrumentation is powered from one Class IE source.
In addition, there is only one SDCS level control system.
VI.
CONCLUSIONS Lacrosse satisfies all of the requirements for Safe Shutdown except I
for a lack of adequate electrical supply.
An additional set of instru-ments and valves (from an independent Class IE power source) is required l
for the Shutdown Condenser System level control.
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