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Assessment for the Waste Incineration Facility " (Building 232-Z) Hanford Site, Washington L

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Assessment for the Waste Incineration Facility LEGALDISCLAIMER Thisreportwaspreparedas anaccountof worksponsoredby anagencyof the UnitedStatesGovernment.Neitherthe ,., UnitedStatesGovernmentnoranyagencythereof,norany of theiremployees,norany of theircontractors,subcontractors ortheir employees,makesanywarranty,expressor implied, or assumesany legalliabilityorresponsibilityfor the 4 accuracy,completeness,orany thirdparty'suseor theresults of suchuse ofany information,apparatus,product,or process disclosed,orrepresentsthatits use wouldnot infringe privatelyownedrights. Referencehereintoany specific commercialproduct,process,or servicebytradename, trademark,manuiacturer,orotherwise,doesnotnecessarily constituteorimplyitsendorsement,recommendation,or favoringby theUnitedStatesGovernmentorany agency thereoforitscontractorsor subcontractorsTh. eviewsand opinionsof authorsexpressedhereindo notnecessarilystate orreflectthoseof the UnitedStatesGovernmentorany agencythereof. Thisreporthasbeenreproducedfromthebestavailablecopy. Availablein papercopyandmicrofiche. Availableto theU.S. Departmentof Energy andits contractorsfrom Officeof ScientificandTechnicalInformation P.O. Box62 OakRidge,TN 37831 (615) 576-8401 Availableto thepublicfromtheU.S. Departmentof Comm6rce NationalTechnicalInformationService 5285 PortRoyalRoad Springfield,VA22161 (703) 487-4650 Printed in the UnitedStatesofAmerica DISCLM-I.CHP(1-91) t DOE/RL-93-104 uc-721 Decontamination and Decommissioning . Assessment for the Waste Incineration Facility " (Building 232-Z) Hanford Site, Washington L. N. Dean AdvancedSciences,In¢ DatePublished February 1994 Departmentof Energy - @ PU.On.Boxited550 States Richland,Washington99352 Approvedfor PublicRelease iDISTRIBUTI©N OF TH_SDOCUMENT IS UNLIMITED TABLE OF CONTENTS 1.0 INTRODUCTION ...................................................... 1 1.1 BACKGROUND ................................................... 1 1.2 OBJECTIVES ..................................................... 2 1.2.1 Project ..................................................... 2 1.2.2 D&D Program Management ...................................... 2 1.3 SCOPE .......................................................... 2 s " 2.0 FACILITY INFORMATION ............................................... 6 2.1 PHYSICAL DESCRIFFION ........................................... 6 . 2.1.1 Ventilation .................................................. 6 2.1.1.1 Electrical power ........................................ 6 2.1.1.2 Off-gas duct work ...................................... 9 2.2 HISTORY ........................................................ 9 2.3 RADIOLOGICAL CHARACTERIZATION ................................ 9 2.4 CHEMICAL CHARACTERIZATION ................................... 10 3.0 CRITERIA .......................................................... 11 3.1 RADIOLOGICAL PROTECTION AND ALARA ........................... 11 3.2 WASTE MINIMIZATION ........................................... 13 3.3 RESIDUAL RADIOLOGICAL LIMITS .................................. 14 3.4 PHYSICAL CONDITION ............................................ 14 4.0 DECOMMISSIONING PLAN ............................................. 15 4.1 RESIDUAL PLUTONIUM REMOVAL .................................. 15 4.1.1 Progress Piping and Duet Work ................................... 19 4.1.2 Filters and Filter Boxes ........................................ 20 4.1.3 Incinerator and Scrubber cell ..................................... 20 4.2 PIPING AND EQUIPMENT REMOVAL AND DISPOSAL .................... 21 4.2.1 Piping and Equipment Removal ................................... 21 4.2.1.1 General conditions at the 232-Z Facility ...................... 21 4.2.1.2 Dismantling equipment .................................. 23 4.2.1.3 Metal-burning tools .................................... 23 4.2.1.4 Grinders and abrasive cutters .............................. 23 " 4.2.1.5 Portable, reciproca_ng, and fixed posiUon saws ................. 24 4.2.1.6 Nibblers and shears .................................... 24 ,. 4.2.1.7 Glove bags and greenlaouses .............................. 24 4.2.1.8 Packaging and disposal .................................. 28 4.2.1.9 Summary ............................................ 28 4.2.2 TRU Waste Disposal Option ..................................... 28 4.2.2.1 Disposal costs ........................................ 30 4.2.2.2 Disposal without decontamination or volume reduction ............ 30 4.2.2.3 Summary ............................................ 31 4.2.3 Equipment and Materials Decontamination ........................... 31 4.2.3.1 Economic justification of decontamination .................... 31 4.2.3.2 Toxicity and volume reduction ............................. 31 TABLE OF CONTENTS (Continued) 4.2.3.3 Manualwiping and scrubbing ............................. 31 4.2.3.4 Abrasive blasting ...................................... 32 4.2.3.5 Vibratorydecontaminationunit ............................ 32 4.2.3°6 Chemicalflushing ..................................... 35 4.2.3.7 Electropolish ......................................... 35 4.2.3.8 Ultrasonic ........................................... 35 4.2.3.9 High pressure water lance ................................ 35 4.2.3.1C0oncreteandblocksurfacecontaminati.....................on 35 4.2.3.11Scarifier............................................35 4.2.3.12HighTemperatureWaterSpraysystem.......................35 4.2.3.13Areasexemptedfromdecontaminati.......................on 38 4.2.3.14Summary............................................38 4.2.4No Action..................................................38 4.2.5RecommendedTechniquefors EquipmentRemoval, Decontaminatiandon,Disposal.................................. 38 4.2.5.1Requiredtoolands equipment.............................38 4.2.5.2Decontamination......................................41 4.2.5.3Suggestedequipmenltayoutforsectionin....................g 41 4.2.5.4Wastedisposa........................................l 43 4.2.5.5Summary............................................43 4.3 BUILDING DECOMMISSIONING .....................................43 4.3.1 ConfinementOptions..........................................43 4.3.2 BuildingDecontaminatiOptionon s.................................46 4.3.3 BuildinRgemoval ............................................47 4.3.4 No Action..................................................47 4.3.5 Discussion of Confinement, Decontamination. and Building Removal ........ 47 4.4 DECOMMISSIONINGCONSTRAINTS .................................. 49 4.5 TECHNICALPLAN - PLUTONIUMREMOVALAND RECOVERY ............. 49 4.5.1 ProjectPlanning and Control ..................................... 49 4.5.1.1 Criticalityevaluation .................................... 49 4.5.1.2 Waste certificationplan ................................... 49 4.5.2 Mobilization andSite Preparation .................................. 52 4.5.2.1 Program work plan ............................ , ......... 52 4.5.2.2 Readiness review ....................................... 52 4.5.2.3 Workertraining........................................ 52 4.5.2.4 Mobilization and site preparation ............................ 52 4.5.3 Process Piping Removal ........................................ 52 4.5.3.1 Removal work plan ..................................... 52 4.5.3.2 Piping removal ......................................... 52 4.5.4 Plutonium Recovery Operations................................... 53 4.5.4.1 Piping segment_,ng/plutouiumrecovery ........................ 53 4.5.4.2 Waste packaging and disposal .............................. 53 4.5.5 Project Close Out ............................................ 53 4.5,,5.1 Demobilization and waste disposal ........................... 53 4.5.5,2 Prepare final report ...................................... 53 TABLE OF CONTENTS (Continued) 4.6 TECHNICAL PLAN - DECOMMISSIONING APPROACH .................... 53 4.6.1 Project Planning and Control .................................... 55 4.6.1.1 Criticality safety report and specifications ..................... 55 4.6.1.2 Safety evaluation ...................................... 55 4.6.1.3 Waste certification plan .................................. 55 4.6.1.4 Clean Air Act permitting ................................. 55 4.6.1.5 Establish training requirements ............................ 55 " 4.6.1.6 Program support and project manning ........................ 55 4.6.2 Mobilization and Building Preparations ............................. 58 . 4.6.2.1 Characterization, waste designation, and SDAR preparations ........ 58 4.6.2.2 Decommissioning work plans ............................. 58 4.6.2.3 Worker training ....................................... 58 4.6.2.4 RCRA interface ....................................... 58 4.6.2.5 Readiness review ...................................... 58 4.6.2.6 Mobilization, site preparation, and decontamination facility preparation ..................................... 60 4.6.2.7 Confinement building installation ........................... 60 4.6.2.8 Ventilation systems .................................... 60 4.6.3 Non-Process Equipment Removal ................................. 63 4.6.3.1 Removal instruction or procedures .......................... 63 4.6.3.2 Remove equipment ..................................... 63 4.6.3.3 Radiological survey of removed equipment .................... 63 4.6.3.4 Package clean waste and LLRW ........................... 63 4.6.3.5 Waste disposal ........................................ 65 4.6.4 Process Area Piping and
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