Transcript First Technical Meeting on EMRAS II

First Technical Meeting on EMRAS II
new working group on
“Reference approaches to modelling for
regulatory compliance for legacy site
management”
Interim progress 21 January 2009 in Vienna
For Astrid Liland and Malgorzata Sneve
Norwegian Radiation Protection Authority
www.nrpa.no
Proposed objectives: remain unchanged, more or less
Use of assessment tools to meet IAEA basic safety
standards and related requirements, as applied to
nuclear legacy sites
Goal:
Establish a forum for researcher/modellers and regulators
where models for environmental impact and risk assessment,
including remediation measures, could be tested for
regulatory purposes
... To develop a reference approach for such assessments
www.nrpa.no
Participants contributing to discussion
France
Greece
Iraq
Italy
Hungary
Argentina
Brasil
Bulgaria
Spain
Australia
UK
Thailand
Bosnia Herzogovenia
Norway
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Advisors to government
departments
Technical Support
Organisations
Regulators
No operators!
Main interests
NORM
Phosphogypsum waste
Monazite sand process waste
Oil and gas scale waste
Mine waste.. metals and coal
Burning of fossil fuel
Uranium mining and milling wastes
Definite most people interested in
NORM but not always as legacy
sites.
Relevant Russian and USA
participants not able to be here...
Nuclear legacy sites from nuclear fuel cycle/military activities
NW Russia
USA (Hanford)
www.nrpa.no
How to develop work plan..?
Situations of interest
Very diverse geographically
Atmospheric discharges
and technically
Liquid discharges
• Fresh water
Is something missing..?
• Marine
Contaminated land
• Releases from it
• Building on it
• Clearance and land use restrictions
Disposal sites
• Are they in acceptable conditions? IAEA BSS etc..
• If not, how to choose among options for remediation?
www.nrpa.no
For each situation it is decided to study:Identify the quantities which need to be calculated to
demonstrate acceptability
• dose limits, humans and other biota
• environmental protection standards
• optimisation... (?)
• Definition of monitoring requirements
• Definition of next stage of site or waste characterisation
Identify the processes relevant to their assessment
• New brain storms
• Review existing models
• Review EMRAS I output
>>Identify situations which are currently very difficult to regulate
because regulatory basis does not exist or data to support
environmental safety assessment does not exist, or models
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Then:Compare alternative models for specific situations
Compare models against independent data
Develop guidance in light of the results
However!!!
General lack of datasets.... HELP!!!
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