ML21125A300
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FSAR CHAPTER 7 - INSTRUMENTATION AND CONTROLS TABLE 7-1 Revision 31 Page 1 of 1 REACTOR PROTECTIVE SYSTEM RELAYS Con- Con-tact Function tact Function K1-1 SOE Node K2-1 SOE Node K1-2 Rod Rundown(a) K2-2 Rod Rundown(a)
K1-3 Trip Reset(b) K2-3 Trip Reset K1-4 Trip Reset K2-4 Trip Reset K1-5 Not Used K2-5 Not Used K1-6 Trips Turbine K2-6 Trips Turbine K1-7 Trip Reset Lockout(c) K2-7 Trip Reset Lockout K1-8 Critical Function Multiplexor K2-8 Critical Function Multiplexor K3-1 SOE Node K4-1 SOE Node K3-2 Rod Rundown K4-2 Rod Rundown K3-3 Trip Reset K4-3 Trip Reset K3-4 Trip Reset K4-4 Trip Reset K3-5 Not Used K4-5 Not Used K3-6 Trips Turbine K4-6 Trips Turbine K3-7 Trip Annunciator K4-7 (Spare)
K3-8 Critical Function Multiplexor K4-8 Critical Function Multiplexor (a) Rod Rundown - The control rods receive a "rods in" signal following a reactor trip which causes any rod with a "stuck" clutch to be driven to the bottom of the core.
(b) Trip Reset - The reactor trip reset push button must be depressed to permit reactor start-up following a trip.
(c) Trip Reset Lockout - The reactor trip cannot be reset within 30 seconds following a reactor trip. This function prevents the reactor trip being reset while the control rods are still descending following a reactor trip.
FSAR CHAPTER 7 - INSTRUMENTATION AND CONTROLS TABLE 7-2 Revision 21 Page 1 of 1 REGULATING RODS WITHDRAWAL INTERLOCKS Withdrawal Prohibit Manual Individual Manual Sequential Conditions Control Mode or Group Control Mode Pretrip Overpower X X High Start-up Rate X X (Between 10-4% and 15%
Full Power)
FSAR CHAPTER 7 - INSTRUMENTATION AND CONTROLS TABLE 7-3 Revision 21 Page 1 of 1 SOURCE/WIDE RANGE NUCLEAR INSTRUMENT CHANNEL TRIP UNIT ACTIONS Trip Approximate Unit Input Signal Action Set Point 1 Low High Voltage Audible and Visible 410 vdc Decreasing Alarm HV 2 Log Power Level Bypass Rate-of-Change < 10-4% Full Power of Power Trip Disable Zero Power Mode > 10-4% Full Power Bypass (Effective for Enable T Power One Protective Channel) Block in Thermal Margin Monitor 3 Log Power Level Bypass Rate-of-Change 10-4% Full Power of Power Trip Disable Zero Power Mode > 10-4% Full Power Bypass (Effective for Enable T Power One Protective Channel) Block in Thermal Margin Monitor 4 Log Power Level Spare -
5 Rate-of-Change Pretrip Signal and Rod 1.5 Decades/Minute of Power Withdrawal Prohibit (Bypassed < 10-4%
(Effective for Two and > 15%)
Protective Channels) 6 Rate-of-Change Trip Signal to Reactor 2.6 Decades/Minute of Power Protective System (Bypassed < 10-4%
(Effective for One and > 15%)
Protective Channel) 7 Rate-of-Change Trip Signal to Reactor 2.6 Decades/Minute of Power Protective System (Bypassed < 10-4%
(Effective for One and > 15%)
Protective Channel) 8 Rate-of-Change Spare -
of Power
FSAR CHAPTER 7 - INSTRUMENTATION AND CONTROLS TABLE 7-4 Revision 21 Page 1 of 1 POWER-RANGE SAFETY CHANNEL TRIP UNIT ACTIONS Trip Approximate Unit Input Signal Action Set Point 1 Detector Voltage, Audible and Visible 3.5% Below Normal Module Interlock, Alarm Operating Voltage Operate Calibrate Switch 2 Power Level Spare 3 Power Level Spare 4 Power Level Spare 5 Power Level Spare 6 Power Level Spare 7 Power Level Spare 8 Power Level Rate Trip Inhibit to > 15% Full Power Logarithmic Channel Enable ASI Alarm > 15% Full Power Bypass Loss-of-Load < 15% Full Power Trip
FSAR CHAPTER 7 - INSTRUMENTATION AND CONTROLS TABLE 7-5 Revision 21 Page 1 of 1 CONTROL ROD POSITION LIGHT MATRIX Control Rod Position Regulating Part-Length Color Shutdown Control Rods Control Rods Control Rods Green Lower Electrical Limit Lower Electrical Limit Lower Electrical Limit White Between Shutdown Between Upper Control Moving Control Rod Insertion Rod Stop and Lower Limit and Lower Electrical Limit Electrical Limit Amber NA Between Upper Control Between Upper Control Rod Stop and Upper Rod Stop and Upper Electrical Limit Electrical Limit Blue Between Upper and NA -
Shutdown Control Rod Insertion Limit Red At Upper Electrical At Upper Electrical At Upper Electrical Limit Limit Limit