Term
PCIS
Describe Class "A" valves. |
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Definition
-Penetrate primary containment.
-Communicate directly w/reactor vessel.
-2 valves (1 inside, 1 outside drywell).
-Inboard valves are AC, outboard are DC.
-Rx supply lines use 2 check valves in series. |
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Term
PCIS
Describe Class "B" valves. |
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Definition
-Penetrate primary containment.
-Do not communicate directly w/reactor vessel.
-Communicate w/primary containment free space.
-2 valves, both outside drywell. |
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Term
PCIS
Describe Class "C" valves. |
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Definition
-Penetrate primary containment.
-Do not communicate directly w/reactor vessel or primary containment free space.
-1 valve outside of drywell.
-Not part of PCIS. |
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Term
PCIS
Describe what isolates on a group I signal. |
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Definition
-MSIVs.
-Main steam line drain valves.
-Recirc sample isolation. |
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Term
PCIS
Describe the group I signals. |
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Definition
-Rx low-low water level: -47".
-Main steam line low pressure: < or equal to 840psig when in RUN.
-Steam tunnel high temperature: 195-200F. (1 of 2/twice).
-Steam line high flow 135-140% of rated (1 of 2/twice). |
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Term
PCIS
Describe the steam chase temperature alarm setpoint. |
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Definition
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Term
PCIS
Describe the group II isolations. |
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Definition
-Containment vent/purge valves.
-TIP system.
-Atmosphere sampling & analyzer isolation.
-Drywell sump isolation.
-RHR / shutdown cooling.
-RHR discharge to radwaste. |
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Term
PCIS
Describe the group II signals. |
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Definition
-Reactor low water level: +9".
-Drywell high pressure: 1.84psig. |
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Term
PCIS
Describe partial group II isolations. |
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Definition
-Containment vent/purge valves.
-Atmosphere sampling & analyzer isolation. |
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Term
PCIS
Describe the partial group II signals. |
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Definition
-Rx water level low-low: -47".
-Drywell high pressure: 1.84psig.
-Rx building vent exhaust high: 26mrem/hr.
-Fuel pool high radiation: 50mrem/hr.
-1 highscale or 2 downscale (.1mrem/hr). |
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Term
PCIS
Describe the group III isolations. |
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Definition
-RWCU (suctions and discharge).
-Recirec sample isolations (CV-2790/2 791). |
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Term
PCIS
Describe the group III isolation signals. |
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Definition
-Rx low-low water level: -47".
-Drywell high pressure: 1.84psig.
-RWCU system high flow: 462gpm w/10 second delay or -200gpm w/10 second delay.
-RWCU room high temperature: 170F. |
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Term
PCIS
Describe the group IV isolation valves. |
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Definition
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Term
PCIS
Describe the group IV isolation signals. |
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Definition
-HPCI high steam flow: 300,000 lbm/hr for 4 seconds.
-HPCI steam line area temperature: 187.5F.
-HPCI steam supply line low pressure: 100psig. |
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Term
PCIS
Describe the group V isolations. |
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Definition
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Term
PCIS
Describe the group V isolation signals. |
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Definition
-RCIC high steam flow: 44,434 lbm/hr for 5 seconds.
-RCIC steam line area temperature: 187.5F.
-RCIC steam supply line low pressure: 60psig. |
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Term
PCIS
Describe the function of the main steam line high flow signal. |
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Definition
| -Ensures fuel peak cladding temperature remains below limit and offsite doses do not exceed limit. |
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Term
PCIS
Describe the group I isolation reset. |
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Definition
-Signal must be cleared.
-All MSIV switches in CLOSE.
-Reset pushbuttons on C-03. |
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Term
PCIS
Describe the group II and III isolations resets. |
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Definition
-Signals must be cleared.
-All non-MOVs switches must be in CLOSE.
-Reset switches on C-04.
-Switch must be reset in both directions (inboard/outboard). |
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Term
PCIS
Describe the group IV and V isolation resets. |
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Definition
-Signals must be cleared.
-Use HPCI or RCIC steam line isolation reset pushbutton on C-03 or C-04. |
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Term
PCIS
Describe the PCIS channel power supplies. |
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Definition
-Channel A: RPS MG set A.
-Channel B: RPS MG set B and Y-80. |
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