ML21109A097

8 to Updated Final Safety Analysis Report, Appendix E, Station Atmospheric Release Limit Calculations, Table of Contents

ML21109A097
Person / Time
Site:	Peach Bottom
Issue date:	04/08/2021
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
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PBAPS UFSAR APPENDIX E - STATION ATMOSPHERIC RELEASE LIMIT CALCULATIONS TABLE OF CONTENTS E.1 ANALYTICAL MODEL E.1.1 Meteorological Factors E.1.2 Radiological Factors E.1.3 Engineering Factors E.1.4 Averaging Techniques E.1.5 Average Air Concentration E.1.6 Shielding and Occupancy Factors E.2 VERIFICATION OF ANALYTICAL MODEL E.2.1 Meteorology Data E.2.2 Radiological Data E.2.3 Gamma Dose Calculations E.2.3.1 Plume Rise E.2.3.2 Isotopic Data E.2.3.3 Dose Rate Calculations E.2.3.4 Conclusions About Gamma Dose Calculations E.2.3.5 Ground Level Air Concentration Calculations E.3 STACK RELEASE LIMIT CALCULATIONS FOR PEACH BOTTOM SITE E.3.1 Plume Rise E.3.2 Terrain Effects E.3.3 Whole-Body Dose Calculations E.3.3.1 Gamma Dose E.3.3.2 Beta Dose E.3.3.3 Results E.3.4 Internal Dose Calculations E.3.4.1 Internal Dose From Inhalation E.3.4.2 Internal Dose From Ingestion E.4 BUILDING EXHAUST VENT RELEASE E.5 ALL SOURCES OF AIRBORNE RADIOACTIVITY E.6

SUMMARY

APPENDIX E E-i REV. 21, APRIL 2007

PBAPS UFSAR APPENDIX E - STATION ATMOSPHERIC RELEASE LIMIT CALCULATIONS LIST OF TABLES TABLE TITLE E.1.1 Deposition Velocity Coefficients E.1.2 Diffusion Coefficients E.1.3 Noble Gas Isotopes Constituting Mixture E.1.4 Particulate Daughter Products and "Average" Isotope E.2.1 Percent Occurrence of Good Observations from the BNL Site for Various Directions and Wind Speeds (Very Stable)

E.2.2 Percent Occurrence of Good Observations from the BNL Site for Various Directions and Wind Speeds (Moderately Stable)

E.2.3 Percent Occurrence of Good Observations from the BNL Site for Various Directions and Wind Speeds (Neutral)

E.2.4 Percent Occurrence of Good Observations from the BNL Site for Various Directions and Wind Speeds (Unstable)

E.2.5 Percent Occurrence of All Wind Speeds for 16 Directions and 4 Atmospheric Stability Conditions at 355 Ft (From BNL Data - 1963)

E.2.6 Percent Occurrence of Good Observations from the BNL Site for Various Directions and Wind Speeds E.2.7 1963 BNL Environmental Monitoring E.2.8 Average Annual Gamma Dose (mRad/yr) for BGRR 1963 -

Predicted and Observed E.3.1 Terrain Height (mMSL) Around Site for Various Distances from Off-Gas Stack E.3.2 Annual Average Gamma Dose at Ground Level from Continuous Release Rate of 1.0 Ci/sec - Peach Bottom Site APPENDIX E E-ii REV. 21, APRIL 2007

PBAPS UFSAR LIST OF TABLES (cont'd)

TABLE TITLE E.3.3 Total Annual Ground Level Radiation Dose in Air from Stack Release Rate of 1.0 Ci/sec - Peach Bottom Site E.3.4 Annual Average Integrated Ground Level Air Concentrations of I-131 - Peach Bottom Site E.6.1 Noble Gas Release Rate Limits E.6.2 I-131 Release Rate Limits APPENDIX E E-iii REV. 21, APRIL 2007

PBAPS UFSAR APPENDIX E - STATION ATMOSPHERIC RELEASE LIMIT CALCULATIONS LIST OF FIGURES FIGURE TITLE E.1.1 Vertical Cloud Width Versus Distance - Very Stable E.1.2 Vertical Cloud Width Versus Distance - Moderately Stable E.1.3 Vertical Cloud Width Versus Distance - Neutral E.1.4 Vertical Cloud Width Versus Distance - Unstable E.1.5 Holland Plume Rise Correction Factor E.1.6 Gamma Radiation Absorption Coefficients and Buildup Constants for Air, STP E.2.1 Gamma Dose Rate for Various Wind Speeds and Stabilities for BGRR Stack (Release Rate 0.127 Ci/sec)

E.2.2 Gamma Dose Rate in Air for Various Stability Conditions E.2.3 Dose Rate in Each Sector E.2.4 Nomenclature of Sectors Used for Averaging E.2.5 Whole-Body Gamma Dose (mR/yr) Pattern Around BGRR Stack E.3.1 Average Ground Level Air Concentration Versus Distance for Three Stability Conditions E.3.2 Gamma Dose Rate for Various Stabilities E.3.3 Gamma Dose Rate for Various Wind Speeds - Moderately Stable E.3.4 Gamma Dose Rate for Various Wind Speeds - Neutral E.3.5 Gamma Dose Rate for Various Wind Speeds - Unstable E.3.6 Gamma Dose Rate in Neighboring Sectors APPENDIX E E-iv REV. 21, APRIL 2007