ML19329B467

Notifies of Completion of Acceptance Review of App I Info & Forwards Questions Re Containment Purge Data & Release Points

ML19329B467
Person / Time
Site:	Davis Besse
Issue date:	06/15/1976
From:	Jay Collins Office of Nuclear Reactor Regulation
To:	Stolz J Office of Nuclear Reactor Regulation
References
NUDOCS 8002050651
Download: ML19329B467 (2)

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y 151976 Docket

o. S0-346, J. Stolz, Chief, Light Water Reactors Branch No.1, DPM ACCEPTANCE REVIEW OF THE APPENDIX I INFOR'iATION FOR DAVIS-BESSE, IRIIT NO.1 We have completed our acceptance review of the information provided by the applicant for Davis-Besse, Unit No.1, dated June 4,1976, to meet the requirements of Section V.3 of Appendix I to 10 CFR Part S0. The applicant has provided information that will permit evaluation of Section II.D under the Annex to Appendix I of 10 CFR Part S0. The Radiological Assessment and liydrology-Meteorology Branches find that the information provided is satisfactory for their evaluation; however, the Effluent Treatment Systens Branch requires additional 'nformation en containment purge data and release points. The questions are enclosed.

ORIGI!AL S!G:E3 37 JOHN T. COLLIIIS John T. Collins, Chief Effluent Treatrent Systems Franch Division of Site Safety and Environmental Analysis

Enclosure:

Acceptance Review questions cc:

R. DeYoung

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JUN 151976 ACCEPTANCE REVIEW QUESTIONS ON APPENDIX I ANALYSIS FOR DAVIS-BESSE NUCLEAR STATION, UNIT 1 Docket No.

50-346 1.

Item 6.3 of Table A6 indicates that there will be 4 purges per year at 50,000 cfm for 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> and ventilation for 504 hours0.00583 days <br />0.14 hours <br />8.333333e-4 weeks <br />1.91772e-4 months <br /> /yr at 50,000 cfm during refueling. Justify these parameters in light of the fact that NUREG-0017, Section 2.2.10, states that operating experience at plants similar to Davis-Besse indicates a need to vent the containment approximately 20 times per year during power operation.

2.

Do the release points indicated in Table A3 have deflectors or diffusers associated with them?

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