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49 Cards in this Set
- Front
- Back
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IA Isolation Signal (7)
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Closes MSIVs & Main Steam Line Drains.
Inboard valves (HV-41-*F022A/B/C/D, HV-41-*F016) - channels 'A' & 'B' for MSL Drain Outboard Valves (HV-41-*F028A/B/C/D, HV-41-*F019) - channels 'C' & 'D' for MSL Drain MSIVs require channels ‘A’ -OR- ‘C’ -AND- ‘B’ -OR- ‘D’ 1) Low low low Rx level (-129") 2) Low Rx press (756#)[mode switch in RUN] 3) High temp in outboard MSIV room (192°F) 4) High temp in turbine tunnel (165°F) 5) High steam line flow (140%) 6) Low condenser vacuum (10.5 psia) (8.54” of Hg) 7) Manual ('A' or 'C' AND 'B' or 'D' pushbuttons) |
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IB Isolation Signal (2)
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Closes Main Steam sample valves (HV-41-*F084/*F085), recirc sample valves (HV-43-*F019/*F020),
& trips mechanical vacuum pump (high MSL rad only) (A & B channels only) 1) Low low Rx level (-38") 2) Manual ('A' pushbutton for inbds & 'D' pushbutton for outbds) Note: Mech Vac pump requires a single channel for trip. |
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IIA Isolation Signal (3)
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Closes HV-51-*F009, *F008, *F015A(B), *51A(B), & *F050A(B)
1) Low Rx level (12.5") A&B OR C&D 2) High Rx press (75#) Single Channel 3) Manual 'A' inbd (*F009, *F050A(B), *51A(B)), 'B' outbd (*F008, *F015A(B)) Note: *F008 has a separate 93# interlock to prevent opening w/ high Rx Press for App R. (normally in isolation during normal power operations, due to level being >12.5” and pressure >75#) |
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IIB Isolation Signal (4)
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RHR HX Sample lines & RHR Drains to RW
Closes HV-51-*F040, *F049, *F079A(B), *F080A(B) 1) Low Rx level (12.5") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) Manual: 'A' outboard [*F080A(B), *F040], 'B' inboard [*F079A(B), *F049] 4) *F040: high temp isolation (140°F) |
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III Isolation Signal (9)
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RWCU (Isolation Channel A-> *F001, Channel B-> *F004 Valve)
Closes HV-44-*F001, *F004 1) Low low Rx level (-38") A&B OR C&D 2) SLC Initiation ('A' or 'C' for *F001, 'B' for *F004) Single channel 3) RWCU Differential high flow (>54.9 gal for 45 sec TD) Single channel 4) RWCU pump room high temp (155°F) Single channel 5) RWCU Pump room delta temp (>52°F) Single channel 6) RWCU HX room temp (132°F) Single channel 7) RWCU HX delta temp (>32°F) Single channel 8) NRHX outlet temp (140°F)[*F004 only] 9) Manual: 'A' inboard (*F001), 'D' outboard (*F004) |
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IVA Isolation Signal (7)
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HPCI Valves: Closes HV-55-*F002 (inboard), *F003 (outboard), *F100 (bypass), *F041 (supp pool inboard), *F042 (supp pool outboard), & trips HPCI turbine.
1) High steam line flow (300% w/ 3 sec TD) Sensors are two out of two once per DIV 2 or DIV 4 2) Low steam line press (100#) Sensors are two out of two once per DIV 2 or DIV 4 3) Rupture diaphragm press (10#) Sensors are two out of two once per DIV 2 or DIV 4 4) High room temp (225°F) Single channel 5) High piping area temp (175°F) Single channel 6) High room delta temp (126°F) Single channel 7) Manual: *F003, *F041, *F042, & *F100 (only works with initiation signal sealed in) Note: HPCI logic is energize to actuate Note: Valves only require a single channel for isolation. |
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IVB Isolation Signal (1)
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HPCI Vacuum Breakers
Closes HV-55-*F093 & *F095 1) High drywell press (1.68#) & low Rx press (100#) Auto reset. No manual initiation ONE out of ONE ONCE!! |
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VA Isolation Signal (7)
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RCIC
Closes HV-49-*F007 (inboard), *F008 (outboard), *F076 (bypass), & trips RCIC turbine. 1) High steam line flow (300% w/ 3 sec TD) Any sensor actuation closes inbd & outbd isolation valve. 2) Low steam line press (64.5#) Any sensor actuation closes inbd & outbd isolation valve. 3) Rupture diaphragm press (10#) Any sensor actuation closes inbd & outbd isolation valve. 4) High room temp (205°F) Single channel 5) High piping area temp (175°F) Single channel 6) High room delta temp (109°F) Single channel 7) Manual: *F008 & *F076 (only works if initiation signal was received and not reset) Note: RCIC logic is energize to actuate ONE out of ONE ONCE!! |
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VB Isolation Signal (1)
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RCIC Vacuum Breakers
Closes HV-49-*F080, *F084 1) High drywell press (1.68#) & low Rx press (64.5#) Auto reset. No manual initiation. ONE out of ONE ONCE!! |
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VIA Isolation Signal (10)
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Containment Purge Supply & Exhaust
Closes big CAC valves (N2 supplies, purge supplies, DW purge exhaust, Supp Pool purge exhaust) [Isolates BOTH Units] 1) Low low Rx level (-38") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) Low RE D/P (-0.1") 50 min TD Single channel 4) Low RF D/P (-0.1") 100 sec TD Single channel 5) High RE exhaust rad (1.35mr/hr) A&B OR C&D 6) High RF exhaust rad (2.0 mr/hr) A&B OR C&D 7) High North Stack rad (2.1 micro curies/cc) A&B OR C&D 8) RE/SBGT connecting valves not closed (196/197) 9) RF/SBGT connecting valves not closed (019/020) 10) Manual (pushbuttons 'A' & 'D' OR key lock switches *78A & *78B). Note: Closing SGD-206-1, SGD-206-2, or SGD-506-3 bypasses the isolation signal from the associated zone’s logic (i.e. closing SGD-206-1 means that any isolation signal from U-1 will not cause an isolation). |
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VIB Isolation Signal (9)
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Containment exhaust to REECE, Inerting Block Valves
Closes little CAC valves (DW exhaust to REECE, Supp Pool exhaust to REECE, N2 supply block valves) [Isolates BOTH Units] Bypassable 1) Low low Rx level (-38") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) Low RE D/P (-0.1") 50 min TD Single channel 4) Low RF D/P (-0.1") 100 sec TD Single channel 5) High RE exhaust rad (1.35mr/hr) A&B OR C&D 6) High RF exhaust rad (2.0 mr/hr) A&B OR C&D 7) RE/SBGT connecting valves not closed (196/197) 8) RF/SBGT connecting valves not closed (019/020) 9) Manual (pushbuttons 'A' & 'D' OR key lock switches *78A & *78B). Note: Closing SGD-206-1, SGD-206-2, or SGD-506-3 bypasses the isolation signal from the associated zone’s logic (i.e. closing SGD-206-1 means that any isolation signal from U-1 will not cause an isolation). |
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VIC Isolation Signal (4)
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GROUP 6C: Containment sampling & recombiner lines
Closes sample & recombiner valves (common N2 purge M/U supply, CASS, DW rad sample sys) [isolates only affected unit] Recombiner and CASS isolations ONLY are bypassable 1) Low low Rx level (-38") 2) High drywell press (1.68#) 3) RE high rad (1.35 mr/hr) 4) RF high rad (2.0 mr/hr) ONE out of ONE ONCE!! |
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VIIA Isolation Signal (4)
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PCIG
Closes PCIG process lines (HV-59-*01, *02, *29A(B), *35) Bypassable 1) Low low low Rx level (-129") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) RE high rad (1.35 mr/hr) A&B OR C&D 4) Manual |
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VIIB Isolation Signal (3)
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TIP purge lines
Closes TIP supply (HV-59-*31) No bypass. 1) Low low Rx level (-38") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) RE high rad (1.35 mr/hr) A&B OR C&D NO Manual |
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VIIC Isolation Signal (1)
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PCIG to ADS
Closes PCIG to ADS [HV-59-*51A(B)] No Bypass 1) Low d/p PCIG to drywell (2 psid) NO Manual ONE out of ONE ONCE!! |
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VIIIA Isolation Signal (3)
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DWCW & RECW
Closes DWCW valves (HV-87-*20A(B), *21A(B), *22, *23, *28, *29) & Recirc Pump cooling water isolation valves (HV-13-06, *07, *08, *11). 1) Low low low Rx level (-129") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) Manual |
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VIIIB Isolation Signal (3/3)
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GROUP 8B: Misc. Process lines
Closes drywell floor (HV-61-*10, *11) & equip sumps (HV-61-*30, *31), Supp Pool Cleanup pump suction (HV-61-*27, *28), & TIP withdrawal. 1) Low low Rx level (-38") A&B OR C&D 2) High drywell press (1.68#) A&B OR C&D 3) Manual GROUP 8B(Part 2): Misc. ECCS valves Closes HV-052-*F015A/B, HV-51-*F027A/B, HV-C-51-*F103A/*F104A. 1) low low low Rx level (-129") 2) high drywell press (1.68#) 3) Rx low pressure (455#) ONE out of ONE ONCE!! |
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RE HVAC (6)
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1) Low low Rx level (-38") A&B OR C&D
2) High drywell press (1.68#) A&B OR C&D 3) Low RE D/P (-0.1") 50 min TD 4) High RE exhaust rad (1.35mr/hr) A&B OR C&D 5) RE/SBGT connecting valves not closed (196/197) 6) Manual |
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RF HVAC (4)
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1) Low RF D/P (-0.1") 100 second TD
2) High RF exhaust rad (2.0 mr/hr) A&B OR C&D 3) RF/SBGT connecting valves not closed (019/020) 4)Manual |
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Main Steam, N2, & Recirc Seals Blocks & Vents (5)
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Main Steam blocks (HV-41-*42, *43) CLOSE, Recirc Pump Seals blocks (HV-46-*27, *28) CLOSE, N2 supply vents (HV-57-*65, 67) OPEN. This is a 6C mimic of initiation signals.
1) Low low Rx level (-38") 2) High drywell press (1.68#) 3) RE exhaust high rad (1.35 mr/hr) 4) RF exhaust high rad (2.0 mr/hr) 5) Manual Note: Valves only require a single channel for isolation. Note: Recirc pump seal vents (HV-46-*25, *26) and Main Steam vents (HV-41-*40, *41) are manual open only. |
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Inst Gas Blocks & Vents (3)
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Inst air/inst gas blocks (HV-59-*40, 41) CLOSE, Inst air/inst gas vents (HV-59-42, *43) OPEN.
1) Low low low Rx level (-129") This is a 8A mimic PLUS RE RAD of initiation signals 2) High drywell press (1.68#) 3) RE exhaust high rad (1.35 mr/hr) Note: Valves only require a single channel for isolation. |
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Loss of *AY160 OR *BY160 isolates (6)
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1. DWCW
2. PCIG 3. RECW 4. RWCU 5. RE HVAC 6. Causes a 1/2 MSIV isolation. |
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Loss of 125VDC (2)
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1. MSIV DC solenoids deenergize (valves stay open)
2. RE/RF HVAC DC solenoids deenergize (partial isolation & SGTS/RERS start) |
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Effect of LOCA on NSSS bypasses
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Power is lost to NSSSS bypass relays and bypassed valves reisolate (valves must be rebypassed to be opened). Bypasses are energize to operate.
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Reactor Level 3 - Low (2)
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IIA - RHR S/D Cooling
IIB - RHR HX Sample Lines |
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Reactor Level 2 - Low Low (9)
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IB - Main Steam And Rx Water Sample
III - RWCU Lines VIA - Prim Cont Purge Supply AND Exhaust (big) VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) VIC - Prim Cont Sampling & Recombiner Lines VIIB - Prim Tip Purge Supply VIIIB - Miscellaneous Process (Sumps, Tips, N2, Recirc Seal Purge, MSL Drain ) RE HVAC RF HVAC |
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Reactor Level 1 - Low Low Low (9)
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VIIIA - D/W Chilled Water & Recirc Pump Clg Water
VIIIB - ECCS Process Lines (CS test, SP Spray, HX vent) VIIIB - Instrument Gas Block and Vents |
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Main Steam Line High Radiation (1)
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Mechanical Vacuum Pump
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Main Steam Line - High Flow (1)
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IA - MSIV's and Steam Line Drains
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Main Steam Line - High Flow (1)
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IA - MSIV's and Steam Line Drains
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Drywell High Pressure and Reactor Low Press (1)
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VIIIB - ECCS Process Lines
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Drywell High Pressure (11)
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IIB - RHR HX Sample Lines
VIA - Prim Cont Purge Supply AND Exhaust (big) VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) VIC - Prim Cont Sampling & Recombiner Lines VIIA - PCIG Process Lines VIIB - Prim Tip Purge Supply VIIIA - D/W Chilled Water and Recirc Pump Cooling Water VIIIB - Miscellaneous Process (Sumps, SP cleanup, Tips, N2, Recirc Seal Purge, MSL Drain ) VIIIB - Instrument Gas Block and Vents RE HVAC RF HVAC |
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High Drywell Pressure & RCIC Low Steam Supply Pressure (1)
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VB - RCIC Turbine Exh Vac Breaker Line
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High Drywell Pressure & HPCI Low Steam Supply Pressure(1)
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IVB - HPCI Turbine Exh Vac Breaker Line
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RWCU - Flow, Area High Temp, Non-Regen Htx High Temp(1)
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RWCU Lines
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RCIC - RX Steam Line dP, Diaphram High Pressure, High Area Temperature (1)
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VA - RCIC Process Lines
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HPCI - RX Steam Line dP, Diaphram High Pressure, High Area Temperature (1)
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IVA - HPCI Prcess Lines
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HPCI - Steam Supply Low Pressure(1)
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IVA - HPCI Prcess Lines
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PCIG - PCIG to Drywell - Low dP (1)
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VIIC - PCIG to ADS valves
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Main Steam Line - Low Pressure (1)
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IA - MSIV's and Steam Line Drains
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Condenser Vacuum - Low (1)
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IA - MSIV's and Steam Line Drains
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Refueling Area Ventilation Exhaust - High Radiation (6)
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VIA - Prim Cont Purge Supply AND Exhaust (big)
VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) VIC - Prim Cont Sampling & Recombiner Lines VIIIB - Miscellaneous Process (N2, Recirc Seal Purge, MSL Drain ) RE HVAC RF HVAC |
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Reactor Encl Ventilation Exhaust - High Radiation (9)
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VIA - Prim Cont Purge Supply AND Exhaust (big)
VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) VIC - Prim Cont Sampling & Recombiner Lines VIIA - PCIG Process Lines VIIB - Prim Tip Purge Supply VIIIB - Miscellaneous Process (N2, Recirc Seal Purge, MSL Drain ) VIIIB - Instrument Gas Block and Vents RE HVAC RF HVAC |
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Outside Atmosphere to Refueling Area Low DP (4)
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VIA - Prim Cont Purge Supply AND Exhaust (big)
VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) RE HVAC RF HVAC |
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Outside Atmosphere to Reactor Area Low DP (4)
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VIA - Prim Cont Purge Supply AND Exhaust (big)
VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) RE HVAC RF HVAC |
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Reactor Pressure - High (RHR valve permissive) (1)
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IIA - RHR S/D Cooling
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North Stack Effluent High Radiation (1)
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VIA - Prim Cont Purge Supply and Exhaust
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SLCS Initation(1)
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III - RWCU Lines
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Reactor Encl or Refuel Floor / SGTS Connecting Valve Failed Open (4)
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VIA - Prim Cont Purge Supply and Exhaust
VIB - Prim Cont Exh to REECE AND N2 Block Valves (small) RE HVAC RF HVAC |
