ML20202G175
| ML20202G175 | |
| Person / Time | |
|---|---|
| Issue date: | 07/08/1986 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Ward G SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER |
| Shared Package | |
| ML20202G180 | List: |
| References | |
| NUDOCS 8607150319 | |
| Download: ML20202G175 (3) | |
Text
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- L ij WASHINGTON, D. C. 20555 k.....,/ July 8, 1986 Mr. Gary M. Ward, Manager, Reload Licensing Exxon Nuclear Company 2101 Horn Rapids Road Richland, Washington 99352
Dear Mr. Ward:
SUBJECT:
SAFETY EVALUATION OF EXXON NUCLEAR COMPANY'S LARGE BREAK ECCS EVALUATION MODEL EXEN/PWR AND ACCEPTANCE FOR REFERENCING OF RELATED LICENSING TOPICAL REPORTS The Nuclear Regulatory Commission (NRC) staff has completed its review of the Exxon Nuclear Company's large break ECCS Evaluation Model entitled EXEP/PWR..
The EXEM/PWR Evaluation Model is described in the following topical reports:
XN-NF-82-20(P), Revision 1, August 1982 XN-NF-82-20(P), Revision 1, Supplement 1, June 1983 XN-NF-82-20(P)(A), Revision 1, Supplement 2, February 1985 XN-NF-82-20(P), Revision 1, Supplement 3 June 1985 XN-NF-82-20(P), Revision 1, Supplement 4, July 1984 XN-NF-82-07(P)(A), Revision 1, November 1982 XN-NF-81-58(P)(A), Revision 2, Supplements 1 & 2, March 1984 XN-NF-85-16(P), Volume 1, February 1985 XN-NF-85-16(P , Volume 1, Supplement 1, January 1986 XN-NF-85-16(P , Volume 1, Supplement 2 January 1986 XN-NF-85-16(P , Volume 1, Supplement 3, March 1986 XN-NF-85-16(P , Volume 2, Revision 1, January 1986 XN-NF-85-16(P), Volume 2, Revision 1, Supplement 1, January 1986 XN-NF-85-105(P), October 1985 XN-NF-85-105(P), Supplement 1, January 1986 The staff finds the reports to be acceptable for referencing in licence appli-cations to the extent specified and under the limitations delineated in the reports and the associated NRC evaluation, which is enclosed. The evaluation defines an acceptable large break model in compliance with Appendix K to 10 CFR 50.
The staff does not intend to repeat our review of the matters described in the reports and found acceptable when the reports appear as references in license applications, except to assure that the material presented is applicable to the specific plant involved. This acceptance applies only to the matters described in the reports.
In acc.ordance with procedures established in NUREG-0390, it is requested that ENC publish accepted versions of these reports within three months of receipt of this letter. The accepted version shall incorporate this letter and the enclosed evaluation after the title page. The accepted versions shall include an -A (designating accepted) following the report identification symbol. ,b 8607150319 860708
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.O Gary M. Ward July 8, 1986 The EXEM/PWR model becomes effective with the publication of the accepted versions of the aforementioned topical reports. All submittals demonstrating compliance with Appendix K to 10 CFR 50 using the Exxon ECCS Evaluation Model after that time must use the model described in the enclosed SER. During the ensuing 90 days, applicants or licensees requiring an Appendix K analysis may elect to submit an analysis based upon the previously approved ENC WREM-IIA model, with consideration of the effect of NUREG-0630, or submit analyses con-forming to the enclosed SER. When the topical reports are referenced, the references must include both the proprietary and nonproprietary versions.
Should the criteria or regulations change such that the staff conclusions as to the acceptability of these reports are invalidated, ENC and/or the appli-cants referencing these topical reports will be expected to revise and resub-mit their respective documentation, or submit justification for the continued effective applicability of these topical reports without revision of their respective documentation.
. Sincerely, k- '
Denris M. Crutchfield, Ass' tant Director Division of PWR Licensing-
Enclosure:
Safety Evaluation cc: W. Minners J. Watt C. Berlinger R. Hodges D. Wiggenton R. Emch C. Miller l
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. Gary M. Ward July 8, 1986 The EXEM/PWR model becomes effective with the publication of the accepted versions of the aforementioned topical reports. All submittals demonstrating compliance with Appendix K to 10 CFR 50 using the Exxon ECCS Evaluation Model after that time must use the model described in the enclosed SER. During the ensuing 90 days, applicants or licensees requiring an Appendix K analysis may elect to submit an analysis based upon the previously approved ENC WREM-IIA model, with consideration of the effect of NUREG-0630, or submit analyses con-forming to the enclosed SER. When the topical reports are referenced, the references must include both the proprietary and nonproprietary versions.
Should the criteria or regulations change such that the staff conclusions as to the acceptability of these reports are invalidated, ENC and/or the appli-cants referencing these topical reports will be expected to revise and resub- i mit their respective documentation, or submit justification for the continued effective applicability of these topical reports without revision of their respective documentation.
Sincerely, Original signed by Dennis M. Crutchfield, Assistant Director Division of PWR Licensing-B
Enclosure:
Safety Evaluation cc: W. Minners J. Watt C. Berlinger R. Hodges D. Wiggenton R. Emch C. Miller DISTRIBUTION --
Central Files PDR RSB Files RJones DCrutchfield RDiggs, LFMS lyktl118N OFC :DPL-p:R5B DPLB-B:R5B:5L DPL-B:RSB:BC DP 3:RSB:AD NAME :RMnjIs:cm NLaubenh CTbn a DCN DATE :06/ /86 W/ ( /86 0 / (/86 Of/f(/86 0FFICIAL RECORD COPY