ML22278A276
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LGS UFSAR CHAPTER 12- RADIATION PROTECTION TABLE OF CONTENTS 12.1 ENSURING THAT OCCUPATIONAL RADIATION EXPOSURES ARE AS LOW AS REASONABLY ACHIEVABLE 12.1.1 Policy Considerations 12.1.1.1 Management Policy 12.1.1.2 Management Responsibilities 12.1.1.3 Policy Implementation 12.1.2 Design Considerations 12.1.2.1 General Design Considerations 12.1.2.2 Equipment Design Considerations 12.1.2.3 Facility Design Considerations 12.1.2.4 ALARA Design Review 12.1.2.5 ALARA Design Considerations for Decommissioning 12.1.3 Operational Considerations 12.1.3.1 Procedure Development 12.1.3.2 Exposure Reduction Procedures 12.1.3.3 General ALARA Techniques 12.1.3.4 Operating Experience 12.1.4 References 12.2 RADIATION SOURCES 12.2.1 Contained Sources 12.2.1.1 Primary Containment 12.2.1.1.1 Reactor Core 12.2.1.1.2 Reactor Coolant System 12.2.1.1.3 Main Steam System 12.2.1.1.4 Drywell Sumps 12.2.1.2 Reactor Enclosure and Refueling Area 12.2.1.2.1 Reactor Water Cleanup System 12.2.1.2.2 Residual Heat Removal System 12.2.1.2.3 Reactor Core Isolation Cooling System 12.2.1.2.4 High Pressure Coolant Injection System 12.2.1.2.5 Core Spray System 12.2.1.2.6 Spent Fuel Storage and Transfer 12.2.1.2.7 Fuel Pool Cooling and Cleanup System 12.2.1.2.8 Reactor Enclosure HVAC System 12.2.1.2.9 Control Rod Drives CHAPTER 12 12-i REV. 14, SEPTEMBER 2008
LGS UFSAR TABLE OF CONTENTS (cont'd) 12.2.1.3 Turbine Enclosure 12.2.1.3.1 Primary Steam and Power Conversion Systems 12.2.1.3.2 Condensate and Feedwater Systems 12.2.1.3.3 Gaseous Radwaste Recombination System 12.2.1.3.4 Turbine Enclosure HVAC System 12.2.1.4 Radwaste Enclosure 12.2.1.4.1 Liquid Waste Management System 12.2.1.4.2 Solid Radwaste System 12.2.1.4.3 Radwaste Enclosure HVAC System 12.2.1.5 Offgas Enclosure 12.2.1.5.1 Gaseous Radwaste Charcoal Treatment System 12.2.1.5.2 Offgas Enclosure HVAC System 12.2.1.6 Shielding Design Sources Resulting from Design Basis Accidents 12.2.1.7 Stored Radioactivity 12.2.1.8 Special Sources 12.2.2 Airborne Radioactive Material Sources 12.2.2.1 Sources of Airborne Radioactivity 12.2.2.2 Production of Airborne Radioactive Materials 12.2.2.3 Locations of Sources of Airborne Radioactivity 12.2.2.4 Control of Airborne Radioactivity 12.2.2.5 Methodology for Estimating the Concentration of Airborne Radioactive Material Within the Plant 12.2.2.6 Estimation of Total Airborne Releases Within the Plant 12.2.2.7 Distribution of Airborne Releases Within the Plant 12.2.2.8 Estimated Airborne Radioactive Material Concentrations Within the Plant 12.2.2.9 Changes to Source Data Since PSAR 12.2.3 References 12.3 RADIATION PROTECTION DESIGN FEATURES 12.3.1 Facility Design Features 12.3.1.1 Common Equipment and Component Designs for ALARA 12.3.1.2 Common Facility and Layout Designs for ALARA 12.3.1.3 Radiation Zoning and Access Control 12.3.1.4 Control of Activated Corrosion Products 12.3.2 Shielding 12.3.2.1 Design Objectives 12.3.2.2 General Shielding Design 12.3.2.3 Shielding Calculational Methods 12.3.2.4 Turbine Enclosure Shielding Design 12.3.2.5 Control Room Shielding Design 12.3.2.6 Reactor Enclosure and Refueling Area Shielding Design 12.3.2.7 Radwaste Enclosure Shielding Design 12.3.2.8 Offgas Enclosure Shielding Design CHAPTER 12 12-ii REV. 14, SEPTEMBER 2008
LGS UFSAR TABLE OF CONTENTS (cont'd) 12.3.2.9 Diesel Generator Enclosure Shielding Design 12.3.2.10 Miscellaneous Plant Areas and Plant Yard Access 12.3.3 Ventilation 12.3.3.1 Design Objectives 12.3.3.2 Design Criteria 12.3.3.3 Design Guidelines 12.3.3.3.1 Guidelines to Minimize Airborne Radioactivity 12.3.3.3.2 Guidelines to Control Airborne Radioactivity 12.3.3.3.3 Guidelines to Minimize Personnel Exposure from HVAC Equipment 12.3.3.4 Design Description 12.3.4 Area Radiation and Airborne Radioactivity Monitoring Instrumentation 12.3.4.1 Area Radiation Monitoring 12.3.4.1.1 Design Bases 12.3.4.1.2 Design Details 12.3.4.1.3 Local Area Monitors 12.3.4.1.4 Postaccident Area Radiation Monitors 12.3.4.2 Airborne Monitoring 12.3.5 References 12.4 DOSE ASSESSMENT 12.4.1 Direct Radiation Dose Estimates for Exposures Within the Plant 12.4.1.1 Definition of Categories Used in Exposure Estimates 12.4.1.2 Exposure Estimate Methodology 12.4.1.3 Results of Annual Direct Radiation Dose Estimates 12.4.1.3.1 Routine Operations Dose Estimate 12.4.1.3.2 Routine Maintenance Dose Estimate 12.4.1.3.3 Inservice Inspection Dose Estimate 12.4.1.3.4 Special Maintenance Dose Estimate 12.4.1.3.5 Radwaste Processing Dose Estimate 12.4.1.3.6 Refueling Dose Estimate 12.4.1.3.7 Health Physics Dose Estimate 12.4.1.3.8 Summary of Direct Radiation Dose Estimates 12.4.2 Airborne Radioactivity Dose Estimates for Exposures Within the Plant 12.4.3 Exposures at Locations Outside Plant Structures 12.4.3.1 Direct Radiation Dose Estimates Outside Plant Enclosures 12.4.3.2 Airborne Radioactivity Dose Estimates Outside Plant Enclosures 12.4.4 Exposures to Construction Workers 12.4.4.1 Direct Radiation Dose Estimates 12.4.4.2 Exposures Due to Airborne Radioactivity 12.4.5 References CHAPTER 12 12-iii REV. 14, SEPTEMBER 2008
LGS UFSAR TABLE OF CONTENTS (cont'd) 12.5 HEALTH PHYSICS PROGRAM 12.5.1 Organization 12.5.2 Facilities, Equipment, and Instrumentation 12.5.2.1 Health Physics and Chemistry Facilities 12.5.2.1.1 Supervisory Offices and Field Offices 12.5.2.1.2 Chemical Laboratories 12.5.2.1.3 Counting Room 12.5.2.1.4 Access Control 12.5.2.1.5 Testing and Laboratory Facilities 12.5.2.1.6 Medical Support 12.5.2.1.7 Personnel Decontamination Facility 12.5.2.1.8 Laundry and Respirator Cleaning Facility 12.5.2.2 Instruments and Equipment 12.5.2.2.1 Chemical Laboratories 12.5.2.2.2 Counting Room 12.5.2.2.3 Portable Survey Instruments and Equipment 12.5.2.2.4 Personnel Dosimeters 12.5.2.2.5 Miscellaneous Instruments and Equipment 12.5.2.2.6 Bioassay 12.5.2.2.7 Personnel Protective Equipment 12.5.3 Procedures and Practices 12.5.3.1 Radiation Surveys (Area Surveys) 12.5.3.1.1 Radiation Detection 12.5.3.1.2 Surface Contamination Detection 12.5.3.1.3 Airborne Contamination 12.5.3.1.4 Survey Frequency and Technique 12.5.3.2 Radiation Work Permits (or equivalent) 12.5.3.3 Handling and Storage of Radioactive Material 12.5.3.4 Controlling Access and Stay Time 12.5.3.4.1 Access to Radiation and High Radiation Areas 12.5.3.4.2 Contamination Control 12.5.3.5 Training 12.5.3.5.1 General Employee Training 12.5.3.5.2 Respiratory Equipment Training 12.5.3.5.3 Respiratory Fit Test 12.5.3.5.4 Health Physics Technician Training 12.5.3.5.5 Compliance with Regulatory Guides CHAPTER 12 12-iv REV. 14, SEPTEMBER 2008
LGS UFSAR CHAPTER 12- RADIATION PROTECTION LIST OF TABLES TABLE TITLE 12.1-1 Systems and Activities Included in ALARA Review 12.2-1 Noble Gas Shielding Design Source Terms 12.2-2 Halogen Shielding Design Source Terms 12.2-3 Other Fission Product Shielding Design Source Terms 12.2-4 Coolant Activation Product Shielding Design Source Terms 12.2-5 Noncoolant Activation Product Shielding Design Source Terms 12.2-6 Basic Reactor Data 12.2-7 Core Region Description To Determine Radial Flux Distribution At Reactor Core Midplane 12.2-8 Material Composition To Determine Radial Flux Distributions At Reactor Core Midplane 12.2-9 Calculated Gamma Ray and Neutron Fluxes At Outside Surface of RPV 12.2-10 Calculated Gamma Ray and Neutron Fluxes At Outside Surface of Primary Shield 12.2-11 Turbine Enclosure and Control Structure Shielding Design Radiation Source Description 12.2-12 Reactor Enclosure Shielding Design Radiation Source Description 12.2-13 Radwaste and Offgas Enclosure Shielding Design Radiation Source Description 12.2-14 Spent Fuel Assembly Shielding Design Source Terms 12.2-15 Drywell Equipment and Floor Drain Sumps Shielding Design Source Terms 12.2-16 RWCU System Recirculation Pumps Shielding Design Source Terms 12.2-17 RWCU System Regenerative Heat Exchanger - First- Stage Shielding Design Source Terms 12.2-18 RWCU System Regenerative Heat Exchanger - Second-Stage Shielding Design Source Terms 12.2-19 RWCU System Regenerative Heat Exchanger - Third- Stage Shielding Design Source Terms 12.2-20 RWCU System Nonregenerative Heat Exchanger - First-Stage Shielding Design Source Terms 12.2-21 RWCU System Nonregenerative Heat Exchanger - Second-Stage Shielding Design Source Terms 12.2-22 RWCU System Filter/Demineralizer and Backwash Receiving Tank Shielding Design Source Terms 12.2-23 RWCU System Filter/Demineralizer Holding Pumps Shielding Design Source Terms 12.2-24 RHR System Shielding Design Source Terms 12.2-25 RCIC System Shielding Design Source Terms 12.2-26 HPCI System Shielding Design Source Terms 12.2-27 FPCC System Shielding Design Source Terms 12.2-28 FPCC System Filter/Demineralizer Shielding Design Source Terms 12.2-29 Fuel Pool Heat Exchanger Shielding Design Source Terms 12.2-30 Reactor Enclosure Equipment Compartment Exhaust Air Filters Shielding Design Source Terms CHAPTER 12 12-v REV. 14, SEPTEMBER 2008
LGS UFSAR LIST OF TABLES (cont'd)
TABLE TITLE 12.2-31 Control Rod Drive Mechanism Shielding Design Source Terms 12.2-32 Turbine Operating Deck Shielding Design Source Terms12.2-33 Moisture Separator Shielding Design Source Terms 12.2-34 Feedwater Heaters and Drain Cooler Shielding Design Source Terms 12.2-35 Steam Seal Evaporator Shielding Design Source Terms 12.2-36 Reactor Feed Pump Turbine Shielding Design Source Terms 12.2-37 Main Condenser Hotwell Shielding Design Source Terms 12.2-38 Condensate System Shielding Design Source Terms 12.2-39 Condensate System Filter/Demineralizer and Backwash Receiving Tank Shielding Design Source Terms 12.2-40 Feedwater System Shielding Design Source Terms 12.2-41 SJAE Condenser Shielding Design Source Terms 12.2-42 Mechanical Vacuum Pump Shielding Design Source Terms 12.2-43 Offgas Piping Shielding Design Source Terms 12.2-44 Offgas Preheater Shielding Design Source Terms 12.2-45 Offgas Recombiner Shielding Design Source Terms 12.2-46 Offgas Recombiner Catalyst Element Shielding Design Source Terms 12.2-47 Offgas Aftercondenser Shielding Design Source Terms 12.2-48 H2 Analyzers Shielding Design Source Terms 12.2-49 Turbine Enclosure Equipment Compartment Exhaust Air Filters Shielding Design Source Terms 12.2-50 SGTS Air Filters Shielding Design Source Terms 12.2-51 Equipment Drain Collection Tank Shielding Design Source Terms 12.2-52 Equipment Drain Surge Tank Shielding Design Source Terms 12.2-53 Equipment Drain Sample Tank Shielding Design Source Terms 12.2-54 Equipment Drain Filter Shielding Design Source Terms 12.2-55 Equipment Drain Demineralizer and Spent Resin Tank Shielding Design Source Terms 12.2-56 Equipment Drain Spent Resin Tank Pump Shielding Design Source Terms 12.2-57 Floor Drain Collection Tank Shielding Design Source Terms 12.2-58 Floor Drain Surge Tank Shielding Design Source Terms 12.2-59 Floor Drain Sample Tank No. 1 Shielding Design Source Terms 12.2-60 Floor Drain Sample Tank No. 2 Shielding Design Source Terms 12.2-61 Floor Drain Filter Shielding Design Source Terms 12.2-62 Floor Drain Demineralizer and Spent Resin Tank Shielding Design Source Terms 12.2-63 Floor Drain Spent Resin Tank Pump Shielding Design Source Terms 12.2-64 Chemical Waste Tank and Evaporator Feed Tank Shielding Design Source Terms 12.2-65 Radwaste Evaporator Shielding Design Source Terms 12.2-66 Evaporator Distillate Tank Shielding Design Source Terms 12.2-67 Laundry Drain Collection Tank Shielding Design Source Terms 12.2-68 Laundry Drain Sample Tank Shielding Design Source Terms 12.2-69 Reactor, Turbine, and Radwaste Enclosures Equipment and Floor Drain Sumps Shielding Design Source Terms 12.2-70 Condensate Phase Separators Shielding Design Source Terms 12.2-71 Condensate Phase Separator Sludge Mixing and Discharge Pump Shielding Design Source Terms 12.2-72 Condensate Phase Separator Decant Pump Shielding Design Source Terms CHAPTER 12 12-vi REV. 14, SEPTEMBER 2008
LGS UFSAR LIST OF TABLES (cont'd)
TABLE TITLE 12.2-73 RWCU System Phase Separator Shielding Design Source Terms 12.2-74 RWCU System Phase Separator Sludge Discharge and Mixing Pump Shielding Design Source Terms 12.2-75 RWCU System Phase Separator Decant Pump Shielding Design Source Terms 12.2-76 Waste Sludge Tank and Discharge and Mixing Pump Shielding Design Source Terms 12.2-77 Radwaste Evaporator Concentrate Storage Tank Shielding Design Source Terms 12.2-78 Solid Radwaste Centrifuge Air Filters and Radwaste Enclosure Equipment Compartment Exhaust Air Filters Shielding Design Source Terms 12.2-79 Charcoal Treatment System Cooler Condenser Shielding Design Source Terms 12.2-80 Charcoal Guard Bed Shielding Design Source Terms 12.2-81 Charcoal Main Bed Shielding Design Source Terms 12.2-81(a) First Half of Adsorber Number 1 (Unit 1) 12.2-81(b) Second Half of Adsorber Number 1 (Unit 1) 12.2-81(c) Adsorber Number 2 (Unit 1) 12.2-81(d) Adsorber Number 3 (Unit 1) 12.2-81(e) Adsorber Number 4 (Unit 1) 12.2-81(f) Adsorber Number 1 (Unit 2) 12.2-81(g) Adsorber Number 2 (Unit 2) 12.2-81(h) Adsorber Number 3 (Unit 2) 12.2-81(i) Adsorber Number 4 (Unit 2) 12.2-81(j) Adsorber Number 5 (Unit 2) 12.2-82 Outlet HEPA Filter Shielding Design Source Terms 12.2-83 Control Room Shielding Design Source Terms - Primary Containment 12.2-84 Control Room Shielding Design Source Terms - Reactor Enclosure 12.2-85 Control Room Shielding Design Source Terms - Turbine Enclosure and Control Structure 12.2-86 Control Room Shielding Design Source Terms - Standby Gas Treatment System Carbon Filter 12.2-87 Condensate Storage Tank Shielding Design Source Terms 12.2-88 Refueling Water Storage Tank Shielding Design Source Terms 12.2-89 Traversing Incore Probe Materials 12.2-90 Intentionally Left Blank 12.2-91 Intentionally Left Blank 12.2-92 Intentionally Left Blank 12.2-93 Estimated In-Plant Airborne Radioactive Releases 12.2-94 Estimated In-Plant Distribution of Airborne Radioactivity Releases 12.2-95 Reactor Enclosure Airborne Source Descriptions 12.2-96 Turbine Enclosure Airborne Source Descriptions 12.2-97 Radwaste and Offgas Enclosure Airborne Source Descriptions 12.2-98 Estimated Airborne Concentrations in the Reactor Enclosure 12.2-99 Estimated Airborne Concentrations in the Turbine Enclosure 12.2-100 Estimated Airborne Concentrations in the Radwaste and Offgas Enclosures 12.2-101 Dewatered HSA Spent Resin Cake Shielding Design Source Terms 12.2-102 Dewatered LSA Spent Resin Cake Shielding Design Source Terms 12.2-103 Solid Radwaste Centrifuge Shielding Design Source Terms 12.2-104 Radiation Levels from the TIP Detectors and Cables 12.3-1 Plant Radiation Zone Description CHAPTER 12 12-vii REV. 14, SEPTEMBER 2008
LGS UFSAR LIST OF TABLES (cont'd)
TABLE TITLE 12.3-2 List of Computer Codes Used In Shielding Design Calculations 12.3-3 Turbine Enclosure Ventilation System Design Features 12.3-4 Control Structure Ventilation System Design Features 12.3-5 Reactor Enclosure and Refueling Area Ventilation Systems Design Features 12.3-6 Radwaste and Offgas Enclosures Ventilation System Design Features 12.3-7 Area Radiation Monitoring System Equipment 12.3-8 Area Radiation Monitoring Environmental Parameters 12.3-9 Remote Equipment Panel Locations 12.4-1 Summary of Historical Data Used in Compilation of Exposures Received at Operating Boiling Water Reactors 12.4-2 Occupational Exposures by Job Function for Operating Boiling Water Reactors 12.4-3 Exposure Estimates for the Turbine Enclosure and Control Structure 12.4-4 Exposure Estimates for the Reactor Enclosure 12.4-5 Exposure Estimates for the Radwaste and Offgas Enclosures 12.4-6 Estimated Exposure for Operators in Control Rooms 12.4-7 Summary of Routine Operations Exposure Estimate 12.4-8 Estimate of Expected Routine Maintenance Requirements 12.4-9 Summary of In-Plant Direct Radiation Exposure Estimates 12.4-10 Estimated Turbine Enclosure and Control Structure Inhalation Exposures Due to Airborne Radioactivity 12.4-11 Estimated Reactor Enclosure Inhalation Exposures Due to Airborne Radioactivity 12.4-12 Estimated Radwaste and Offgas Enclosures Inhalation Exposures Due to Airborne Radioactivity 12.4-13 SKYSHINE Source Terms for One-Unit Operating 12.4-14 Direct Radiation Dose Rates 12.4-15 Estimated Exposure of Unit 2 Construction Workers 12.4-16 Airborne Radioactivity Doses to Construction Workers in Yard Area 12.5-1.1 Health Physics and Chemistry Instrumentation CHAPTER 12 12-viii REV. 14, SEPTEMBER 2008
LGS UFSAR CHAPTER 12- RADIATION PROTECTION LIST OF FIGURES FIGURE TITLE 12.1-1 ALARA Organization Chart 12.3-1 Typical Equipment Layout Arrangement Drawing for Filters, Demineralizers, and Valves 12.3-2 Typical Equipment Layout Arrangement Drawing for Radwaste Tanks and Pumps 12.3-3 Deleted 12.3-4 Typical Equipment Layout Arrangement Drawing for Offgas Recombiners 12.3-5 Typical Equipment Layout Arrangement Drawing for Sample Stations 12.3-6 Typical Equipment Layout Arrangement Drawing for Charcoal Adsorber Beds 12.3-7 Typical Shielding Arrangement for Charcoal and Particulate Filters 12.3-8 Deleted 12.3-9 Deleted 12.3-10 Deleted 12.3-11 Deleted 12.3-12 Deleted 12.3-13 Deleted 12.3-14 Deleted 12.3-15 Deleted 12.3-16 Deleted 12.3-17 Deleted 12.3-18 Deleted 12.3-19 Deleted 12.3-20 Deleted 12.3-21 Deleted 12.3-22 Deleted 12.3-23 Deleted 12.3-24 Deleted 12.3-25 Deleted 12.3-26 Scaled Isometric of Control Structure with Relation to Containment 12.3-27 Area Radiation Monitoring System Schematic Diagram 12.4-1 Site Boundary and Yard Area Receptor Points CHAPTER 12 12-ix REV. 14, SEPTEMBER 2008