ML20339A064
| ML20339A064 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 11/20/2020 |
| From: | Exelon Generation Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20339A309 | List:
|
| References | |
| Download: ML20339A064 (5) | |
Text
GINNA/UFSAR 10 STEAM AND POWER CONVERSION SYSTEM 1
10.1 INTRODUCTION
2 10.1.1
SUMMARY
DESCRIPTION 2 10.1.1.1 Functional Description 2 10.1.1.2 Radioactivity 3 10.1.1.3 Major Systems 3 10.1.2 DESIGN BASES 4 10.1.2.1 System Design 4 10.1.2.2 Codes and Classifications 5 10.1.3 SYSTEM EVALUATION 5 10.1.3.1 Variables Limits Functions 5 10.1.3.2 Transient Effects 6 10.1.3.3 Secondary-Primary Interactions 7 Table 10.1-1 STEAM AND POWER CONVERSION SYSTEM COMPONENT 8 DESIGN PARAMETERS 10.2 TURBINE GENERATOR AND CONTROLS 11 10.2.1 MAIN TURBINE 11 10.2.1.1 Description 11 10.2.1.2 Turbine Controls 11 10.2.1.2.1 Description 11 10.2.1.2.2 Automatic Load Reduction 12 10.2.1.3 Turbine Disk Integrity 12 10.2.1.4 Turbine Supervisory Instrumentation 13 10.2.2 MAIN GENERATOR 13 10.2.3 ELECTROHYDRAULIC CONTROL SYSTEM 14 10.2.3.1 Function 14 10.2.3.2 Components 14 10.2.3.3 Alarms and Controls 15 10.2.3.4 Turbine Trip Devices 16 10.2.3.4.1 Overspeed Trip Mechanism 16 Page 1 of 5 Revision 29 11/2020
GINNA/UFSAR 10.2.3.4.2 Auxiliary Governor 17 10.2.3.4.3 Protective Trip Devices 17 10.2.3.4.4 Testing and Inspection 18 10.3 MAIN STEAM SYSTEM 20 10.3.1 DESIGN BASIS 20 10.3.2 SYSTEM DESCRIPTION 20 10.3.2.1 Flow Path 20 10.3.2.2 Steam Generators 21 10.3.2.3 Steam Piping 22 10.3.2.4 Main Steam Safety Valves (MSSV) 22 10.3.2.5 Atmospheric Relief Valves (ARV) 22 10.3.2.6 Main Steam Isolation Valves 23 10.3.2.7 Main Steam Non-Return Check Valves 23 10.3.2.8 Main Steam Header 24 10.3.2.9 Main Turbine Stop Valves and Control Valves 24 10.3.2.10 Moisture Separator Reheaters 24 10.3.2.11 Reheater Stop and Intercept Valves 25 10.3.3 INSTRUMENTATION REQUIREMENTS 25 10.4 CONDENSATE AND FEEDWATER SYSTEMS 27 10.
4.1 DESCRIPTION
27 10.4.2 FLOW PATH 27 10.4.3 MAIN CONDENSERS 27 10.4.4 CONDENSATE SYSTEM 28 10.4.4.1 Condensate Pumps 28 10.4.4.2 Condensate Booster Pumps 29 10.4.4.3 Low-Pressure Heaters 29 10.4.4.4 Condensate Bypass Valve 30 10.4.5 FEEDWATER SYSTEM 30 10.4.5.1 Main Feedwater Pumps 30 10.4.5.2 High-Pressure Heaters 31 Page 2 of 5 Revision 29 11/2020
GINNA/UFSAR 10.4.5.3 Feedwater Flow Control 31 10.4.5.4 Feedwater Flow Measurement 31 10.5 AUXILIARY FEEDWATER SYSTEMS 33 10.
5.1 INTRODUCTION
33 10.5.2 DESIGN BASES 33 10.5.2.1 Functional Requirements 33 10.5.2.2 Preferred Auxiliary Feedwater System 34 10.5.2.3 Standby Auxiliary Feedwater System (SAFW) 34 10.5.3 SYSTEMS OPERATION AND DESCRIPTION 35 10.5.3.1 Preferred Auxiliary Feedwater System 35 10.5.3.1.1 Normal Lineup 35 10.5.3.1.2 Startup and Cooldown Operations 35 10.5.3.1.3 Transient Operations 36 10.5.3.1.4 System Description 36 10.5.3.2 Standby Auxiliary Feedwater System (SAFW) 38 10.5.4 DESIGN EVALUATION 38 10.5.4.1 System Evaluation 38 10.5.4.2 Alternating Current Independence of the Turbine-Driven Auxiliary 39 Feedwater Pump (TDAFW) 10.5.5 INSTRUMENTATION 40 10.5.5.1 Motor-Driven Auxiliary Feedwater Pump (MDAFW) Controls 40 10.5.5.2 Preferred Auxiliary Feedwater System Initiation 40 10.5.5.3 Auxiliary Feedwater System Alarms 41 10.5.5.4 Auxiliary Feedwater Performance Indications 42 10.5.5.5 Control From Outside the Control Room 42 10.6 CIRCULATING WATER SYSTEM 44 10.6.1 DESIGN BASES 44 10.6.2 SYSTEM DESCRIPTION 44 10.6.2.1 Intake Structure 44 10.6.2.2 Inlet Tunnel 45 10.6.2.3 Traveling Screens 45 Page 3 of 5 Revision 29 11/2020
GINNA/UFSAR 10.6.2.4 Circulating Water Pumps 45 10.6.2.5 Condenser Inlet and Outlet Valves 45 10.6.2.6 Condensate Cooler 45 10.6.2.7 Screen House 45 10.6.2.8 Piping and Discharge Canal 46 10.6.2.9 Flooding Protection 46 10.6.3 INSTRUMENTATION AND CONTROL 47 10.6.4 INSERVICE INSPECTION 47 10.7 OTHER FEATURES OF THE STEAM AND POWER CONVER- 49 SION SYSTEM 10.7.1 STEAM DUMP SYSTEM 49 10.7.2 HEATER DRAIN SYSTEM 50 10.7.3 EXTRACTION STEAM SYSTEM 50 10.7.4 CONDENSATE STORAGE SYSTEM 51 10.7.5 STEAM-GENERATOR BLOWDOWN AND BLOWDOWN 52 RECOVERY SYSTEM 10.7.5.1 Steam-Generator Blowdown System 52 10.7.5.2 Blowdown Recovery System 53 10.7.5.3 Blowdown System Operation 53 10.7.6 MAIN TURBINE AND GENERATOR AUXILIARY SYSTEMS 54 10.7.6.1 Gland Sealing Steam and Exhaust System 55 10.7.6.2 Air Ejectors 56 10.7.6.3 Vacuum Priming System 56 10.7.6.4 Exhaust Hood Spray System 56 10.7.6.5 Turbine Lube-Oil System 57 10.7.6.6 Generator Hydrogen Cooling System 58 10.7.6.7 Generator Seal-Oil System 59 Page 4 of 5 Revision 29 11/2020
GINNA/UFSAR 10.7.6.8 Generator Exciter Cooling 59 10.7.7 SECONDARY CHEMISTRY CONTROL 59 10.7.7.1 All-Volatile-Treatment Chemistry 59 10.7.7.1.1 Background 59 10.7.7.1.2 All-Volatile-Treatment Chemistry Control 59 10.7.7.2 Nonnuclear Sampling System 61 10.7.7.3 Water Chemistry Monitoring Program 61 10.7.7.4 Catalytic Oxygen Removal System 61 10.7.7.5 Condensate Polishing Demineralizer System 62 10.7.7.5.1 System Description 62 10.7.7.5.2 Resin Transfer 63 10.7.7.5.3 Regeneration (Drawing 33013-1910, Sheets 1 and 2) 63 10.7.7.5.4 Waste Disposal (Drawing 33013-1912) 64 10.7.7.6 Chemical Dispersant 64 10.7.8 EROSION/CORROSION MONITORING PROGRAM 65 Table 10.7-1 COMPUTERIZED SECONDARY WATER CHEMISTRY MONI- 66 TORING SYSTEM FIGURES Figure 10.2-1 Turbine Control and Protection System Figure 10.6-1 Figure DELETED Sheet 1 -
Figure 10.6-1 Figure DELETED Sheet 2 -
Figure 10.6-2 Screen House Area Plot Plan Figure 10.6-3 Circulating Water Intake Cross Section Page 5 of 5 Revision 29 11/2020