ML15329A287
| ML15329A287 | |
| Person / Time | |
|---|---|
| Site: | Purdue University |
| Issue date: | 11/06/2015 |
| From: | Purdue University Research Reactor |
| To: | Division of Policy and Rulemaking |
| Montgomery C K | |
| Shared Package | |
| ML15300A587 | List: |
| References | |
| Download: ML15329A287 (33) | |
Text
PUR1 -Instrumentation and Control UpgradeNovember 6, 2015 Current I&C OverviewFour channels make up the reactor monitoring equipmentFission ChamberCompensated Ionization ChamberUncompensated Ionization ChamberTwo channels excluding the safety channel must be on
-scale at all timesLow Power
-Startup Channel, Linear ChannelHigh Power
-Log-N, Linear Channel 2
Current I&C Overview 3
Current I&C Overview 4
Current I&C Overview 5
Current I&C Overview 6
General OutlineConsole UpgradeDesire to go to a digital system Reactor ReliabilityImplementation timeImproved data acquisitionInterface with future applicationsCurrently exploring vendorsExpected final contract on an hour
-by-hour basis7 Approach to Regulatory Implementation 10 CFR 50.90 vs 10 CFR 50.59
- A licensee should obtain a license amendment pursuant to 10 CFR 50.90 - if the change - would result in an increase in the likelihood or consequence of an accident or introduce a previously unanalyzed accident.
" -ISG for NUREG 1537 Part I
- "Result in more than a minimal increase in the frequency of occurrence of an accident previously evaluated in the final safety analysis report (as updated)"
-10 CFR 50.59 (c)(2)(
i)*"Result in a departure from a method of evaluation described in the FSAR (as updated) used in establishing the design bases or in the safety analyses
."-10 CFR 50.59 (c)(2)(viii)9 Review of PUR1 Tech Specs Review of PUR1 Tech SpecsSafety Limits
-Fuel TemperatureThe fuel and cladding temperatures shall not exceed 530Change of Instrumentation and control will not affect this tech specWith 12 kW power uprate, expected maximum fuel temperature is around 4511 Review of PUR1 Tech SpecsLimiting Safety System SettingMeasured value of the power level scram shall be no higher than 12.0 kWOnset of Nucleate Boiling is calculated to be ~95 kWChange of I&C will not affect this tech spec12 Review of PUR1 Tech SpecsLimiting Condition for Operation
-Reactivity LimitsShutdown margin of at least 0.01/No experiments with worth greater than 0.004%/No moveable experiments with worth greater than 0.003%/Change of I&C will not affect this tech spec13 Review of PUR1 Tech SpecsReactor Safety SystemThe time from the initiation of a scram condition in the scram circuit until the shim-safety rod reaches the rod lower limit switch shall not exceed one second
.Must be met by new control system 14 Review of PUR1 Tech SpecsReactor Safety SystemScram and Setback SetpointsNew system must be shown to perform at an acceptable frequency of success 15 Review of PUR1 Tech SpecsPrimary Coolant ConditionsPrimary coolant pH shall be maintained at an average over one year of 5.5+/-1.0Primary coolant resistivity shall be maintained at a value greater than 330Primary Coolant shall be at least 13 feet above coreNew I&C will support this surveillance through digital interface 16 Review of PUR1 Tech SpecsConfinementNegative Pressure of at least 0.05 in of waterAll doors shall remain closed except as needed for accessAll inlet and exhaust ducts shall contain a HEPA filterDampers in ventilation capable of being closedNew I&C will support this through digital interface 17 Review of PUR1 Tech SpecsExperimental Reactivity LimitsVarious requirements on experimental reactivity limits and temperaturesExperiments will not be affected by new I&C 18 Review of PUR1 Tech SpecsSurveillance RequirementsRod worth to be measured every 2.5 yearsCalibration of reactor safety channels at least every 15 monthsCalibration of radiation monitoring every 15 monthsVerification of Rod Drop TimesWill not be affected by new I&C 19 Safety Analysis Report (SAR) Update
- 12 kW Power Uprate Submitted
- Expect to have several months of operation at this level before completion of digital upgrade
- All License Amendment Requests will be submitted off of this SAR 20 Description of Proposed System Description of Proposed SystemOverviewDigital Neutron Flux Monitoring System covering all ranges of operation, Startup, Intermediate, Power and Wide RangeNew detectors included in upgradeRTP 3000 TAS PlatformR*TIME Server and Viewer Software 22 Description of Proposed SystemOverviewStartup and Intermediate Range Monitoring Using CICPower Range Monitoring Using UICWide Range Monitoring Using FCRTP 3000 TAS System 23 Description of Proposed SystemOverviewDrive Assembly Interface ElectronicsRMS Systems InterfaceHVAC System InterfaceMakeup Water InterfaceWater Chemistry Sensors 24 Description of Proposed SystemReused ItemsReused Equipment RacksConsole and Hallway Scram ButtonsOperator Console KeylockSwitch25 Description of Proposed SystemSystem InterfaceMain Interface between system and operator will be a digital screen using R*TIMELayout and Final Design to be determined following vendor decisionDesign lockdown early 2016 for LAR submission 26 Functional and Safety Analysis Functional and Safety AnalysisFailure Modes of New SystemOld reactor control system allowed for a Scram on any of the active channelsSame to be true for new designNo requirement for 2/3 or 2/4 logic 28 Functional and Safety AnalysisTime DependenciesCurrent requirement is for full rod insertion in less than one secondDesign, analysis, and testing will ensure this requirement is met 29 Functional and Safety AnalysisOperator Emergency ShutdownIdentical circuitry with console and hallway scrams to be usedLoss of power in any system also will initiate scramRemoval of operator key to remove magnet power 30 Schedule For Submitting License Amendment Request (LAR)
Schedule for Submitting LARProposed Vendor TimelineProject ItemDate ofCompletionPhase 0 Meeting NRCNovember 6Final Contract In PlaceNovember 9ChosenVendor VisitNovember 16System Functional Requirements Document FinalizedDecember 23HardwareDesign FinalizedJanuary 30Final hardware and software designpackage completeFebruary 28License Amendment Request Sent to NRCMarch 18Software Ready for IntegrationMay 1FactoryAcceptance Testing CompleteJune30Deliveryof all Hardware and Software (excluding detectors)July 30LicenseAmendment Request Approved by NRCSeptember Startup and Acceptance TestingSeptember/October 32 PUR1 -Instrumentation and Control UpgradeNovember 6, 2015 PUR1 -Instrumentation and Control UpgradeNovember 6, 2015 Current I&C OverviewFour channels make up the reactor monitoring equipmentFission ChamberCompensated Ionization ChamberUncompensated Ionization ChamberTwo channels excluding the safety channel must be on
-scale at all timesLow Power
-Startup Channel, Linear ChannelHigh Power
-Log-N, Linear Channel 2
Current I&C Overview 3
Current I&C Overview 4
Current I&C Overview 5
Current I&C Overview 6
General OutlineConsole UpgradeDesire to go to a digital system Reactor ReliabilityImplementation timeImproved data acquisitionInterface with future applicationsCurrently exploring vendorsExpected final contract on an hour
-by-hour basis7 Approach to Regulatory Implementation 10 CFR 50.90 vs 10 CFR 50.59
- A licensee should obtain a license amendment pursuant to 10 CFR 50.90 - if the change - would result in an increase in the likelihood or consequence of an accident or introduce a previously unanalyzed accident.
" -ISG for NUREG 1537 Part I
- "Result in more than a minimal increase in the frequency of occurrence of an accident previously evaluated in the final safety analysis report (as updated)"
-10 CFR 50.59 (c)(2)(
i)*"Result in a departure from a method of evaluation described in the FSAR (as updated) used in establishing the design bases or in the safety analyses
."-10 CFR 50.59 (c)(2)(viii)9 Review of PUR1 Tech Specs Review of PUR1 Tech SpecsSafety Limits
-Fuel TemperatureThe fuel and cladding temperatures shall not exceed 530Change of Instrumentation and control will not affect this tech specWith 12 kW power uprate, expected maximum fuel temperature is around 4511 Review of PUR1 Tech SpecsLimiting Safety System SettingMeasured value of the power level scram shall be no higher than 12.0 kWOnset of Nucleate Boiling is calculated to be ~95 kWChange of I&C will not affect this tech spec12 Review of PUR1 Tech SpecsLimiting Condition for Operation
-Reactivity LimitsShutdown margin of at least 0.01/No experiments with worth greater than 0.004%/No moveable experiments with worth greater than 0.003%/Change of I&C will not affect this tech spec13 Review of PUR1 Tech SpecsReactor Safety SystemThe time from the initiation of a scram condition in the scram circuit until the shim-safety rod reaches the rod lower limit switch shall not exceed one second
.Must be met by new control system 14 Review of PUR1 Tech SpecsReactor Safety SystemScram and Setback SetpointsNew system must be shown to perform at an acceptable frequency of success 15 Review of PUR1 Tech SpecsPrimary Coolant ConditionsPrimary coolant pH shall be maintained at an average over one year of 5.5+/-1.0Primary coolant resistivity shall be maintained at a value greater than 330Primary Coolant shall be at least 13 feet above coreNew I&C will support this surveillance through digital interface 16 Review of PUR1 Tech SpecsConfinementNegative Pressure of at least 0.05 in of waterAll doors shall remain closed except as needed for accessAll inlet and exhaust ducts shall contain a HEPA filterDampers in ventilation capable of being closedNew I&C will support this through digital interface 17 Review of PUR1 Tech SpecsExperimental Reactivity LimitsVarious requirements on experimental reactivity limits and temperaturesExperiments will not be affected by new I&C 18 Review of PUR1 Tech SpecsSurveillance RequirementsRod worth to be measured every 2.5 yearsCalibration of reactor safety channels at least every 15 monthsCalibration of radiation monitoring every 15 monthsVerification of Rod Drop TimesWill not be affected by new I&C 19 Safety Analysis Report (SAR) Update
- 12 kW Power Uprate Submitted
- Expect to have several months of operation at this level before completion of digital upgrade
- All License Amendment Requests will be submitted off of this SAR 20 Description of Proposed System Description of Proposed SystemOverviewDigital Neutron Flux Monitoring System covering all ranges of operation, Startup, Intermediate, Power and Wide RangeNew detectors included in upgradeRTP 3000 TAS PlatformR*TIME Server and Viewer Software 22 Description of Proposed SystemOverviewStartup and Intermediate Range Monitoring Using CICPower Range Monitoring Using UICWide Range Monitoring Using FCRTP 3000 TAS System 23 Description of Proposed SystemOverviewDrive Assembly Interface ElectronicsRMS Systems InterfaceHVAC System InterfaceMakeup Water InterfaceWater Chemistry Sensors 24 Description of Proposed SystemReused ItemsReused Equipment RacksConsole and Hallway Scram ButtonsOperator Console KeylockSwitch25 Description of Proposed SystemSystem InterfaceMain Interface between system and operator will be a digital screen using R*TIMELayout and Final Design to be determined following vendor decisionDesign lockdown early 2016 for LAR submission 26 Functional and Safety Analysis Functional and Safety AnalysisFailure Modes of New SystemOld reactor control system allowed for a Scram on any of the active channelsSame to be true for new designNo requirement for 2/3 or 2/4 logic 28 Functional and Safety AnalysisTime DependenciesCurrent requirement is for full rod insertion in less than one secondDesign, analysis, and testing will ensure this requirement is met 29 Functional and Safety AnalysisOperator Emergency ShutdownIdentical circuitry with console and hallway scrams to be usedLoss of power in any system also will initiate scramRemoval of operator key to remove magnet power 30 Schedule For Submitting License Amendment Request (LAR)
Schedule for Submitting LARProposed Vendor TimelineProject ItemDate ofCompletionPhase 0 Meeting NRCNovember 6Final Contract In PlaceNovember 9ChosenVendor VisitNovember 16System Functional Requirements Document FinalizedDecember 23HardwareDesign FinalizedJanuary 30Final hardware and software designpackage completeFebruary 28License Amendment Request Sent to NRCMarch 18Software Ready for IntegrationMay 1FactoryAcceptance Testing CompleteJune30Deliveryof all Hardware and Software (excluding detectors)July 30LicenseAmendment Request Approved by NRCSeptember Startup and Acceptance TestingSeptember/October 32 PUR1 -Instrumentation and Control UpgradeNovember 6, 2015