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Alejandro RodriguezD&D and Waste Management , EMEA Director

Radioactive Waste Management .Important key in Nuclear Energy Production

Nuclear Energy – 30 Years After ChernobylKyiv, April 20th 2016.


BackgroundTreatment of radioactive waste into acceptable forms for storage or disposal is mandatory for waste producers. Waste from operating nuclear facilities and/or D&D activities is produced in various forms (e.g., liquid, solid, gas) and thus requires different treatment to transfer it into acceptable waste forms. Processes to reduce volume and prevent secondary waste generation are favorable to reduce overall cost.

Waste treatment Overview


Waste management concerns the characterization, treatment, conditioning, handling, transport and disposal of the primary and consequential waste streams.

Characterization of wastes Treatment and conditioning of liquid wastes Treatment and conditioning of solid wastes Treatment and conditioning of gaseous and aerosol wastes Packaging of wastes Transport of wastes The disposal of wastes Re-use of decontaminated materials

Radioactive Waste management


Usually the specifications are imposed by the operator of the disposal facility, according to safe assessment of the repository, approved by the Authorities

Mechanical characteristics Durability Handling Transportability aspects Confinement properties

Characterization of RadWaste

Usually the producer are responsible for the activity declaration package by package using the values of the nuclides of easy measurement, Co-60 & Cs-137, and the nuclides of difficult to measure and significant in terms of safety assessment of are calculated through scaling factors related to the easy nuclides

Different levels of characterization are used depending of the specific activityDifferent requirements must be probed, as


Free release or recycling

LLW / ILWliquid & solid

Final disposal

Waste treatment

TemporaryStore

Waste Management- General Scheme


LLWliquid & solid

ILW

Free release or recycling Final disposal

Sedimentation Centrifugation Decantation

Membrane filtration

Mixed bed filtration Evaporation Dewatering Drying Grouting

Free release measurement Waste tracking CompactionIncineration Cementation

Packaging

Decontamination

Sorting

Remote handling

Waste Management- Products and Services


Solidification systems

Solid waste compaction systems

Sorting and optimizing systems

Liquid waste treatment systems

Drying systems

Mobile systems

Drum inspection systems

Handling & peripheral systems







Drying systems



Mobile systems







Drying systems



Mobile systems

112

43

112

43







Drying systems



Mobile systems



Definition of waste streams

Concept Design

Building Layout

System Design Procurement

Manufacturing

Quality control + Acceptance

test

Transport on-site Installation

Commissioning

Service

31.10.2014Fußzeile15

Waste Management- Full Service Delivery

16


Waste Management- Decontamination Workshop

Box for water blasting > 2500 bar removing of coating Box for water blasting < 500 bar decontamination with water or warm water (~ 60°C)

Ultrasonic bath with two basins and one basin for flushingDecontamination basin to lay components into water and chemicals

Working table mechanical decontamination by brushing or wipingProtective suit cleaning equipment

Washing machine rag cleaning


SRTF Sanmen

Sanmen NPP, China

• Generated waste volume is minimized

• Annual waste volume: < 50 m³/NPP

Waste Management- Integrated solution . Sanmen SRTF


Waste Volume, example AP1000, SRTF Sanmen:



DAW/ Mixed Wastes

Chemical liquid waste

Spent Resins

HVAC filters

Filter cartridges

Interim storageReception Treatment/ ProcessingTransportWaste streams

Buffer Tank with Stirrer

Dewatering/ Drying

Container Buffer Storage (Boxes)

Buffer Storage (Drums)

Sorting/ Precompaction

Truck loading area

Drum loading area

Interim Overpack Storage

Drying

Concentrate Drying

Transport Tank

Segmented Gamma

Scanning

Transport Tank Buffer Tank with Stirrer

Measurement for release or recirculation

FCS ReceptionFCS Transport

Overpack Optimizer

Compaction

Grouting/ Cementation



FCSRESCTSMBSHVSHVSManual waste handling Remote controlled waste handling



25.03.2015SRTF Sanmen21



Waste management. Don´t forget recycling and reuse !!


Questions?


Alejandro [email protected]

www.westinghouse.com

http://www.westinghouse.com/




Backup slides




Agenda• Waste Management - Products and Services1

• Decontamination Boxes3

• Site Radwaste Treatment Facility, Example Sanmen4

• Liquid Waste Treatment2


Liquid Radioactive Waste

Particle

Removal

Fine Particl

e Remo

val

Polishing

Free Release

•Chamber Filtration•Tubular Ultrafiltration•Reverse Osmosis

Filtration

•Ion ExchangeChemical Separation

•Evaporator•In-Drum-Dryer

Thermal Separation

•CementationSolidification


• Filtration of solids• 100 µm pore size• Build-up of filter cake on steel

basic filter• Self-cleaning• Rejection of solids into drum• Filtration additive may be added• Skid mounted, mobile

Chamber Filtration

Tubular Ulrtafiltration

Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation

Liquid Waste Treatment


• Filtration of fine particles• 0.05 µm pore size• Cross-flow membranes• Continuous batch process• Concentrate is collected• Skid mounted, mobile

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation



• Filtration of finest particles,

colloids, TDS, TOC• Boron recycling possible• Semi-permeable membrane• Membrane highly selective• Continuous batch process• Concentrate is collected• Skid mounted, mobile

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation



• Ultimate polishing stage• Powder or bead resin• Inorganic Zeolite• Highly selective ion capture• Secondary waste treatable with

Westinghouse products

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation



• Concentration of liquids• Clean condensate• Self suction• Multi stage vapor cleaning• Low energy consmption by vapor

compression• Concentrate for further processing

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation



• Drying of concentrates• Sealed docking of drums• Continuous re-filling of drum• Separated heating and evaporation

zone• Results in solid salt block

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation



• Solidification of liquids• Stabilizes waste• In-Drum Mixing, no lost stirrer• Special coating for better cleaning

ability• Rescipes can be taylor-made• Reduction of specific activity• Mobile system possible

Chamber Filtration


Reverse Osmosis

Ion Exchanger

Evaporator

In-Drum-Dryer

Cementation


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