LR-N10-0355, Hope Creek, HC.OP-AM.ZZ-0001(Z), Rev. 1, Severe Accident Guidelines

From kanterella
(Redirected from ML110050519)
Jump to navigation Jump to search
Hope Creek, HC.OP-AM.ZZ-0001(Z), Rev. 1, Severe Accident Guidelines
ML110050519
Person / Time
Site: Salem, Hope Creek  PSEG icon.png
Issue date: 11/19/2009
From:
Public Service Enterprise Group
To:
Office of Nuclear Reactor Regulation
References
LR-N10-0355 HC.OP-AM.ZZ-0001(Z), Rev. 1
Download: ML110050519 (19)
v • d • e


Text

üRun drywell sprays above 5000 gpmMaximize RPV injection from outside the primary containmentMaximize direct primary containment injection from outside the primary containmentMaximize RPV injection from the suppression pool q*Drywell sprays (see below)*Group 1 and Group 2 systems (Detail C)

~FRPV breached; pressure suppression no longer requiredFSubmerge debris in primary containmentPCF-1.1 q*Vent the primary containment to control suppression chamber pressure below Primary Containment Pressure Limit-B (Fig D)*IF--..you cannot restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-B (Fig D),AND-.you can maintain total RPV and primary containment injection above the Minimum Debris Retention Injection Rate (Fig F),THEN...stop RPV and primary containment injection from outside the primary containment except drywell sprays q*As necessary to help flood the containment*To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-B (Fig D)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Do not vent RPV q*Core debris has breached the RPVFEven if RPV or primary containment injection will be reducedFEven if drywell temperature is above the Drywell Spray Initiation Limit (Fig E)*As required by SAG-2 q*No restrictions. Initiate even if drywell temperature is above the Drywell Spray Initiation Limit (Fig E) q*Maintain spray flow above 5000 gpmFEven if RPV or primary containment injection will be reduced*Use sources outside the primary containment if possible*Stop drywell sprays:*Before drywell pressure drops to 0 psig q*As required by SAG-2 q*You can maintain drywell spray flow above 5000gpm (if drywell sprays are running),*RPV injection will not be reduced,*Suppression pool water level is below 27 ft q*Use sources outside the primary containment if possible*Stop suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig,*You cannot maintain drywell spray flow above 5000 gpm with suppression chamber sprays running

üRestore and maintain RPV water level between -161 in. (TAF)and 54 in.

q*Use only Group 1 systems (Detail C) if possibleFUse Group 2 systems (Detail C) only if necessary to restore and maintain RPV water level above -161 in. (TAF)FAdd water from outside primary containment only if necessary to restore and maintain RPV water level above -161 in. (TAF)

~FReflood the RPV to submerge the corePCF-2 q1.Stop direct injection into the primary containment from outside the primary containment2.IF--..you still cannot stay within Primary Containment Pressure Limit-A (Fig D)THEN..*Vent the primary containment to control suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)*IF--..you reach Primary Containment Pressure Limit-A (Fig D),AND-.you can maintain RPV water level above -161 in. (TAF),THEN...stop RPV injection from outside the primary containment except boron injection from SLC q*As necessary to restore and maintain RPV water level above -161 in. (TAF)*To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)

(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*As necessary to restore and maintain RPV water level above -161 in. (TAF) q*Main Steam Line drains q*As required by SAG-2 q*You can maintain RPV water level above -161 in. (TAF),*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.

q*OK to use sources outside the primary containment if:*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop drywell sprays:*Before drywell pressure drops to 0 psig*You cannot maintain RPV water level above -161 in. (TAF) with sprays running q*As required by SAG-2 q*You can maintain RPV water level above -161 in. (TAF),*Suppression pool water level is below 27 ft q*OK to use sources sources outside the primary containment if:*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig*You cannot maintain RPV water level above -161 in. (TAF) with sprays running

üOperate Core SprayRestore and maintain RPV water level above -311 in. (BAF)Maximize total RPV and primary containment injection from outside the primary containment q*Core SprayFKeep one suction lined up to suppression pool if possibleFUse CST suction for other pump if possible*Group 1 and Group 2 systems (Detail C)

~FCore debris is not expected to melt through RPV FFlood above TAF for long-term coolingPCF-3 q*Stop direct injection into the primary containment from outside the primary containment q1.Stop direct injection into the primary containment from outside the primary containment except drywell sprays2.IF--..you still cannot stay within Primary Containment Pressure Limit-A (Fig D),THEN..*Vent the primary containment to control suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)*IF--..you reach Primary Containment Pressure Limit-A (Fig D),AND-.you can maintain RPV water level above -311 in. (BAF),THEN...stop RPV injection from outside the primary containment except boron injection from SLC q*As necessary to increase RPV injection*As necessary to help flood containment*To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Primary containment water level is higher than RPV water level q*Main Steam Line drains q*As required by SAG-2 q*You can maintain RPV water level above -311 in. (BAF),*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.

q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop drywell sprays:*Before drywell pressure drops to 0 psig*You cannot maintain RPV water level above -311 in. (BAF) with sprays running q*As required by SAG-2 q*You can maintain RPV water level above -311 in. (BAF),*Suppression pool water level is below 27 ft q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig*You cannot maintain RPV water level above -311 in. (BAF) with sprays running

üOperate Core SprayRestore and maintain RPV injection rate above Minimum Debris Retention Injection Rate (Fig F)Maximize total RPV and primary containment injection from outside the primary containment q*Core SprayFKeep one suction lined up to suppression pool if possibleFUse CST suction for other pump if possible*Group 1 and Group 2 systems (Detail C)

~FCore debris is not expected to melt through RPVFFlood above TAF for long-term coolingPCF-4 q*Stop direct injection into the primary containment from outside the primary containment qFIf RPV water level can be determined, use Primary Containment Pressure Limit-BFIf RPV water level is unknown, use Primary Containment Pressure Limit-A1.Stop direct injection into the primary containment from outside the primary containment except drywell sprays2.IF--..you still cannot stay within Primary Containment Pressure Limit-A/B (Fig D),THEN..*Vent the primary containment to control suppression chamber pressure below Primary Containment Pressure Limit-A/B (Fig D)*IF--..you reach Primary Containment Pressure Limit-A/B (Fig D),AND-.you can maintain RPV injection rate above Minimum Debris Retention Injection Rate (Fig F),THEN...stop RPV injection from outside the primary containment except boron injection from SLC q*As necessary to increase RPV injection*As necessary to help flood containment

  • To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-A/B (Fig D)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Drywell water level reaches 57.3 ft q*Main Steam Line drains q*As required by SAG-2 q*You can maintain RPV injection rate above Minimum Debris Retention Injection Rate (Fig F),*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.

q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop drywell sprays:*Before drywell pressure drops to 0 psig*You cannot maintain RPV water level above Minimum Debris Retention Injection Rate (Fig F) with sprays running q*As required by SAG-2 q*You can maintain RPV injection rate above Minimum Debris Retention Injection Rate (Fig F),*Suppression pool water level is below 27 ft q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig*You cannot maintain RPV injection rate above Minimum Debris Retention Injection Rate (Fig F) with sprays running

üMaintain suppression pool water level below 124 in.Have water on drywell floorRestore and maintain RPV injection above Minimum Debris Retention Injection Rate (Fig F)Inject into primary containment from outside the primary containment q*Use Group 1 and Group 2 systems (Detail C)

~FCore debris may melt through RPVFMaintain pressure suppression capabilityPCF-5 q*Stop direct injection into the primary containment from outside the primary containment q*Vent the primary containment to control suppression chamber pressure below Pressure Suppression Pressure (Fig G) q1.Stop direct injection into the primary containment from outside the primary containment2.IF--..suppression pool water level approaches124 in.,THEN...stop RPV injection from outside the primary containment except boron injection from SLC q*As necessary to increase RPV injection*As necessary to help flood the containment*To control suppression chamber pressure below Pressure Suppression Pressure (Fig G)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Do not vent RPV q*As required by SAG-2FEven if RPV injection will be reduced q*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.

q*Operate sprays even if RPV injection will be reduced*OK to use sources outside the primary containment if:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can maintain suppression pool water level below 124 in.*Stop drywell sprays:*Before drywell pressure drops to 0 psig q*As required by SAG-2FEven if RPV injection will be reduced q*Suppression pool water level is below 27 ft q*Operate sprays even if RPV injection will be reduced*OK to use sources outside the primary containment if:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can maintain suppression pool water level below 124 in.*Stop Suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig

üHave water on drywell floorMaximize total RPV injection from all sourcesMaximize direct primary containment injection from outside the primary containment q*Use Group 1 and Group 2 systems (Detail C)

~FCore debris may melt through RPVFPressure suppression unavailable; containment may failPCF-6 q*Stop direct injection into the primary containment from outside the primary containment q1.Vent the primary containment to control suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)2.IF--..you cannot restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D),THEN..stop direct primary containment injection from outside the primary containment except drywell sprays q*As necessary to increase RPV injection*As necessary to help flood the containment

  • To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-A (Fig D)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Primary containment water level reaches 57.3 ft q*Main Steam Line drains q*As required by SAG-2 q*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.,*EITHER:*RPV injection will not be reduced,*RPV pressure is 62 psi or more above suppression chamber pressure,*Spray operation will restore and maintain suppression chamber pressure inside the Pressure Suppression Pressure (Fig G) q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop drywell sprays:*Before drywell pressure drops to 0 psig*RPV injection will be increased by stopping sprays and RPV pressure is less than 62 psi above suppression chamber pressure q*As required by SAG-2 q*Suppression pool water level is below 127 in.,*EITHER:*RPV injection will not be reduced,*RPV pressure is 62 psi or more above suppression chamber pressure,*Spray operation will restore and maintain suppression chamber pressure inside the Pressure Suppression Pressure (Fig G)
  • q*Use sources outside the primary containment if possible when:*RPV pressure is less than 62 psi above suppression chamber pressure,*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop suppression chamber sprays:*Before suppression chamber pressure drops to 0 psig*RPV injection will be increased by stopping sprays and RPV pressure is less than 62 psi above suppression chamber pressureüOperate Core SprayMaintain drywell water level between 34 ft (MDSL) and 92 ft q*Core Spray*Group 1 and Group 2 systems (Detail C)FRPV breached; containment flooded to above MDSLFMaintain debris in primary containment submergedPCF-1.3 q*Restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-B (Fig D) using either or both of the following methods:*Vent the primary containment*Stop RPV and primary containment injection from outside the primary containment except drywell sprays q*As necessary to maintain containment water level above 34 ft (MDSL)*To restore and maintain suppression chamber pressure below Primary Containment Pressure Limit-B (Fig D)(see CONTAINMENT Level/Pressure Override above)*As required by SAG-2 q*See HC.OP-EO.ZZ-0318 q*Do not vent RPV q*As required by SAG-2FEven if RPV injection will be reduced.

q*Drywell temperature is below the Drywell Spray Initiation Limit (Fig E),*Suppression pool water level is below 127 in.

q*OK to use sources outside the primary containment if:*You can restore and maintain suppression chamber pressure and primary containment water level within Primary Containment Pressure Limit-A (Fig D)*Stop drywell sprays:*Before drywell pressure drops to 0 psigSpray function not available (spray nozzles submerged)or unknown Noor unknown Noor unknown Noor unknown No NoYesYesYesYesYesYes~PCF-1.2WAITuntil drywellwater levelreaches34 ft (MDSL)To ~CF/Q-1Lock mode switch in SHUTDOWNCF/Q-2Initiate ARICF/Q-3*Inject SLCFStop SLC when tank level drops to 325 gallons*Insert control rods(HC.OP-SO.BF-0002 HC.OP-SO-SF.0003 HC.OP-AB.IC-0001)FCheck Caution 1 for limit on RPV level indicationsCF/P-1*IF--..suppression pool water level is above 0 in.,THEN...open 5 ADS valvesFOK to exceed 100°F/hr cooldown.*Open inboard main steam line drain valve before drywell water level reaches 48 ft.FOK to defeat isolationsAny ADS valve cannot be opened1.IF--..suppression pool water level is above 0 in.,THEN...open other SRVs until 5 valves are open2.IF--..less than 5 SRVs can be opened,AND-.RPV pressure is 62 psi or more above suppression chamber,THEN...use other pressure control systems (Detail B) to depressurize. Maintain RPV pressure within 62 psi of suppression chamberFOK to exceed release rate limitsFurther cooldown requiredCool down to cold shutdown conditions using pressure control systems (Detail B)FStop cooldown if reactor is not shutdownqThis guideline overrides all 100 & 200 EOPsqWhile in this guideline:FOK to defeat isolations and interlocks interfering with required actionsFOK to exceed release rate limits during primary containment and RPV venting qCF-1*SRVs*Main turbine bypass valves*RWCU (recirc mode)FBypass regen HXs and filter/demins*RWCU (blowdown mode)...only if no boron injected*MSL drains

  • HPCI*RCIC
  • Shutdown cooling...only if no boron injected q*Condensate/Feedwater
  • CRD*RCICFHigh suppression chamber pressure may trip RCIC turbine*LPCI/RHR through shutdown coolingFUse HXs as soon as possible q*Core Spray*RHR Service Water crosstie
  • Fire System*ECCS Keep-Full*SLC 1 0Time after Reactor Shutdown (min.)(1000 min = 16.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />)Injection Flow (gpm) 10 100 100010000 200 400 600 800100012001400 20 0Suppression Pool Water Level (in.)Suppression Chamber Pressure (psig)30405060708090100110120130140 5 10 15 20 25 30 35 40 0100Drywell Pressure (psig)Drywell Temperature (°F)246810121 4200300 400 500 60010.9HC.OP-AM.ZZ-0001 (SAG-1)PRIMARY CONTAINMENT FLOODINGHOPE CREEK GENERATING STATIONRevision 1 NoYesRPV anddrywell pressureequal NoYesHydrogen present NoYesAll of the following conditions which can be observed are observed:

q*RPV water level below -311 in (BAF)*RPV injection flow below Minimum Debris Retention Injection Rate (Fig F)*RPV lower head metal temperature above 575°F (design temperature) q*Increasing drywell pressure trend*Decrease in difference between RPV pressure and drywell pressure*Pronounced increase in drywell temperature trend 0 10 20 30 40 50 60 70 8001020304050607080 90 100SRV solenoid coveredElevation of DW vent

Retrieved from "https://kanterella.com/w/index.php?title=LR-N10-0355,_Hope_Creek,_HC.OP-AM.ZZ-0001(Z),_Rev._1,_Severe_Accident_Guidelines&oldid=955316"