EMRAS 2 EMRAS 2 Working Group 1 Working Group 1 Legacy Sites and - - PowerPoint PPT Presentation

EMRAS 2 EMRAS 2 Working Group 1 Working Group 1 Legacy Sites and NORM Legacy Sites and NORM

NORM NORM

AREVA AREVA Sillam Sillamä äe e Katowice Katowice a) Settling pond (covered) a) Settling pond (covered) b) Settling pond (not b) Settling pond (not covered) covered) c) Pipeline with scale c) Pipeline with scale Los Los Gigantes Gigantes Gela Gela Kavala Kavala Megalopolis Megalopolis

Scenarios Scenarios

No No Yes Yes Belgium Belgium No No Yes Yes Sillam Sillamä äe e No No Yes Yes France France No No private company private company

• wn data
• wn data

Poland Poland Yes Yes Yes Yes Spain Spain No No Yes Yes Argentina Argentina No No Yes Yes Italy Italy No No Yes Yes Greece Greece Yes Yes Yes Yes Greece Greece

Assessed Assessed Data Data Scenarios Scenarios

Models available within group Models available within group

• CROM

CROM

• PC

PC-

• CREAM

CREAM

• RESRAD

RESRAD-

• OFFSITE

OFFSITE

• PRESTO

PRESTO

• COMPLY

COMPLY

• (Radon code) exhalation into buildings

(Radon code) exhalation into buildings

Modelling tools available Modelling tools available

• AMBER

AMBER

• ECOLEGO

ECOLEGO

• MODELMAKER

MODELMAKER

Assessment tools available Assessment tools available

• ERICA

ERICA

Application of Features Events Application of Features Events ProcesseS ProcesseS Analysis Analysis

• Gela

Gela

• Kavala

Kavala

• All other scenarios

All other scenarios

September, 2009 VIENNA

Gela Gela

• Features

Features – – waste, surface water, ground water, soil waste, surface water, ground water, soil types, rock types, atmosphere, plants, humans, types, rock types, atmosphere, plants, humans, engineered barriers engineered barriers

• Events

Events – – earthquake, flood, fire, intrusion earthquake, flood, fire, intrusion

• Processes

Processes – – leaching, groundwater flow, surface flow, leaching, groundwater flow, surface flow, erosion, resuspension, transfer to plants, irrigation erosion, resuspension, transfer to plants, irrigation

• Specific features:

Specific features:

• Retaining wall around the site

Retaining wall around the site – – penetrates about 3 m into the penetrates about 3 m into the underlying clay underlying clay

• Leachate is returned from the downstream sampling wells to the

Leachate is returned from the downstream sampling wells to the top of the stack top of the stack

Characteristic matrix Characteristic matrix – – Gela Gela

waste groundwater food chain ingestion surface water uptake ingestion leaching infiltration inhalation ingestion rain evaporation atmosphere humans irrigation exhalation resuspension barrier leaching ingestion well, breakthrough flooding soil adsorption adsorption uptake ingestion exhalation excretion infiltration infiltration infiltration leaching erosion, flooding soil water percolatio n infiltration leaching uptake leaching sampling well

FEPS analysis FEPS analysis

Derive matrix and Derive matrix and feedback feedback Stack discharge Stack discharge Derive matrix and Derive matrix and feedback feedback Tailings dam Tailings dam Derive matrix and Derive matrix and feedback feedback Gela Gela Derive matrix and Derive matrix and feedback feedback

• uncovered

uncovered Waste repository Waste repository Derive matrix and Derive matrix and feedback feedback Waste repository Waste repository

Tasks and timetable Tasks and timetable

• Scenario descriptions

Scenario descriptions – – Jan 2010 Jan 2010

• Scenario data

Scenario data – – ongoing

• ngoing
• Outline of assessment methodology

Outline of assessment methodology – – Jan 2010 Jan 2010

• Apply FEPS to all real scenarios

Apply FEPS to all real scenarios – – Jan 2010 Jan 2010

• Preliminary modelling if available models are suitable

Preliminary modelling if available models are suitable – – Jan 2010 Jan 2010 -

• ongoing
• ngoing
• Model development (based on FEPS analysis)

Model development (based on FEPS analysis) -

• ongoing
• ngoing
• Draft report sections as appropriate Jan 2010

Draft report sections as appropriate Jan 2010 – – ongoing

• ngoing
• New scenarios

New scenarios -

• ongoing
• ngoing

Final outcomes Final outcomes

• Advice to regulators and operators

Advice to regulators and operators

• Assessment methodologies/Remediation strategies

Assessment methodologies/Remediation strategies

• Application to specific site

Application to specific site

• Most important transfer parameters

Most important transfer parameters

• sensitivity analysis

sensitivity analysis

• Most important variables

Most important variables

• Monitoring programs

Monitoring programs

• Feedback from/to modelling

Feedback from/to modelling

• What to measure

What to measure

• Where to measure

Where to measure

• Consistency with (existing) safety standards

Consistency with (existing) safety standards

Events Events – – possible treatment possible treatment

• Events (flood, earthquake) modify site

Events (flood, earthquake) modify site characteristics characteristics

• Run model with and without modified

Run model with and without modified characteristics characteristics

• Compare results

Compare results