Presentation on theme: "Tritium Management by Design"— Presentation transcript:
1 Tritium Management by Design Paul SaundersSuncoast Solutions, Inc.
2 HistoryEPRI Report “Strategies for Managing Liquid Effluents – Options, Actions & Results”# released in 2003Developed by EPRI & a team of industry expertsLiquid radioactive waste processingLiquid and solid effluentsChemistrySensible long-term liquid processing effluents strategy evaluation
3 The industry’s liquid effluent activity continues to trend down The industry’s liquid effluent activity continues to trend down. This is good!But……….just when you think you have it made……..3H
4 Balanced Effluents Program (BEP) EPRI Effluents Strategy ProjectReaffirmed the importance of balancing a site’s liquid, solid, and gaseous effluentsTritium management is one area that many stations continue to struggle to manageProductionConcentrationControlConsequencesEnvironmental impact, site exposure, cost
5 Historical “Solutions” Several stations use unique tritium strategiesOperationalProcessingNot always coordinated with other programsNot always effectiveIncreased inventorySpikes, increased plant exposure, etc.
6 “Treatment” Options ‘Conventional’ disposal with solid waste Can’t ion exchange, concentrate, cost effectively remove, place into solid formRelease as EffluentLiquid: varies by siteGaseous: used by all plants
7 Issues Limiting production of H-3 3H concentrations in coolant will increaseLater planned releases result in “obvious” spikes in liquid effluent activityANI premium impactPublic perception, risk becoming public opinion issueManaging effluent source mechanismsManage releases, temperature, humidity, air exchangeAirborne dose > Liquid dose
8 Zero release = zero production Issues (continued)Plants were designed, constructed, and licensed to release liquid and gaseous effluentsZero release = zero productionEvaluating and comparing plants on the basis of liquid volume and activity discharged mayLead to erroneous performance evaluationImpact cost effectiveness of programIncrease dose to workersIncrease dose to the publicHOW DO I MAINTAIN A SUCCESSFUL, DEFENSIBLE PROGRAM?
9 Balanced Effluents Program The PlanEPRI tasked by utilities to develop an interactive tritium analytical software tool to evaluate actual or proposed program changesProject directed and supported by an industry expert teamPrimary GoalMake informed decisions that support aBalanced Effluents Program
10 Objectives Develop interactive tritium analytical tool Input actual and hypothetical plant dataBased on site ODCM and operating practicesUse that information to:Evaluate program changesTrack and trend data
11 Objectives (continued) Provide graphical output displayCapture production, inventory, and effluentsReal time or projected values for tritium concentrationsAdditional reports as recommended by a utility support teamThe tool not intended to replace existing pathway modeling softwareIs intended to complement its effectiveness.
12 ID Plant Design Performance Generic production mechanismsID plant specific mechanismsDefine plant specific boundariesDesignFSARInventory
13 Quantify Actual Performance Production CalculationQuantify plant specific resultsID current plant goalsInventoryPlant values/ quantitiesKnown and design unknown (sumps, etc)Other unknown (unidentified, analytical error)Point of origin for tritium inventoryInventory impact factors
14 Quantify Actual Performance (cont.) EffluentsAccountability by effluent streamODCMNO PATHWAY MODELING IN THIS TOOLMass BalancePerform a mass balanceProduction, inventory, and effluentsV&V model and define current state
15 Evaluate Results (investigation phase) Benchmark plant effluent values with Industry ExperienceRegulatoryEPRIANIINPOPossible link to Industry sources
16 Evaluate Design vs. Actual (investigation phase) Consequence AnalysisODCM & R.G pathway analysis, doseIdentify each forms’ contribution to environmental impactCompare analysis results to model & design predictionsFor each effluent stream and pathway analysisDetermine reason for discrepanciesConduct source analysis of abnormal results
17 Consequence Analysis (cont.) Evaluate current performance impactEffluent values versus pathway impactEffluent values versus on site exposureBaseline cost analysisDefine intangible and soft issues
18 Evaluate Options Improvement or Redirection LiquidRecycle primary waterRecycle all wasteAlter release strategyDevelop strategic release protocol (feed and bleed)Solid wasteTreatment, VR, and disposition optionsSolidifyIncinerationPyrolosisDirect burial environmental impact
19 Evaluate Options Improvement or Redirection AirborneEvaporator useInventory tanks/ poolsRelease elevationAtmosphere temperatureHumidityLeaksContainment purgesStack flow rateDehumidifyCooling towersSFP (impacts all three forms)Inventory manipulationTemperature, HVAC, humidityInvestigate new technology
20 Acceptability Determination Performance Options Evaluate acceptability of resultsBenchmark, site specific results, consequences, investigation results, costsIdentify improvement opportunitiesDefine potential path forwardPerform an impact analysis (sensitivity) for each optionCost benefitConsequenceMass balancePathway analysisIntangible/ soft issues/factors/benefits
21 Completion Path Plan/Recommendation Approval Validation Develop management planPrioritized actionsGoals – success measurementDocument plan with supporting documentationApprovalPeer group – sanity validationSenior management – concurrence and resourcesValidationEvaluate actual results versus plan projections
22 Multi Year Project Driven by utility sponsorship 2004 Develop technical skeleton for softwareTeam conceptEPRIUtilities – your participation is needed & welcome!DOE WSRSContractorsANIFirst meeting held May 6Second meeting in FallTBD based on team input and outage schedules
23 2005 & Beyond 2006? Complete tool design Final document Software has not been funded to dateRequires utility support through EPRI fund direction2006?Tritium management tool for delivery to utilitiesSpecial thanks to Ken Sejkora and the Tritium TeamIdeas?Questions?Concerns?