RADNOR - Radioactive dose assessment improvements for the Nordic marine environment: Transport and environmental impact of technetium 99 (99Tc) in marine ecosystems

Updated 2003-03-07

Radioactivity in the Arctic environment is a central topic within environmental pollution issues. Increased discharges of technetium-99 (99Tc) from the nuclear fuel reprocessing plant Sellafield to the Irish Sea has caused public concerns in Norway. This project (acronym “RADNOR”) includes model and monitoring assessments and improvements, assessment of current and novel abiotic and biotic dose parameters and dose calculations and use of realistic climatic background scenarios in order to assess corresponding consequences for transport of radioactive pollutants. RADNOR consists of three main components: part 1, the determination of levels and time series of 99Tc in benthic and pelagic food webs; part 2, containing working packages on improvements to the understanding of site-specific and time-dependent sediment-water interactions (KD), kinetics of accumulation (CF) and body distribution in marine organisms, including contaminated products for the alginate industry and part 3, dealing with model hindcasts and observations for spreading of 99Tc from the Sellafield nuclear reprocessing plant during the 1990s and improvement of the NRPA dose assessment box model. From the model outputs, doses to man and environment will be calculated resulting in a valuable database for use within environmental management and for decision makers.

This is not a National Implementation Plan (NIP) project

Time frame

Project time span
2003 - 2005
Data collection
2003 - 2005
Data processing
2003 - 2005
Data reporting
2003 - 2005

Contact information

Contact person
Justin P Gwynn
Norwegian Radiation Protection Authority Polarmiljøsenteret 9296 Tromsø Norway
+47 77 75 01 65
+47 77 75 01 71
Other project contacts
Per Strand Norwegian Radiation Protection Authority PO Box 55 1332 Østerås Norway per.strand@nrpa.no

Parameters and Media

Parameter groups measured/observed/modelled
Media sampled/studied/modelled
Marine benthos
Marine fish
Marine sediments
Seawater/suspended particulate matter


Regions studied

Data availability

Are data archived or planned to be archived at an AMAP Thematic Data Centre?
Samples/specimens archived in specimen banks?

Methods & Procedures

Procedures and methodology used for, e.g., sampling and sample storage, sample pretreatment, extraction and analysis, including which laboratories are involved, references to methods employed, etc.

Use of previously acquired and continuously updated 99Tc seawater data sets, based on the analysis of 99Tc using 99mTc (NRPA) and Re (CEFAS) as yield monitors. Implementation of 99Tc analytical methodology using rhenium as a yield monitor by IMR. Establishment of time-dependent distribution coefficients (KD) and concentration factors (CF) by AUN An integrated analysis of model hindcasts for 99Tc dispersion performed with two different model concepts (NRPA box model and NAOSIM) and a detailed comparison with observed time series. Statistical analysis of NAOSIM hindcast for flow patterns and adaptation into the NRPA box model and intergration of novel and reassessed abiotic and biotic parameters.

QA/QC Information (what QA/QC procedures are implemented, laboratories involvment in QA/QC activities, model verification/validation routines, etc.)

An exercise in intercalibration and quality assurance between institutions and the different analytical methodologies will be carried out, but is not included in the RADNOR proposal.

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
Other institutes involved in the project

Agricultural University of Norway Institute of Marine Research, Norway Ocean Atmosphere Systems GbR, Germany Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany Norwegian Polar Institute (NP) Institute of Marine Research, Bergen University of Hamburg, Germany Centre for Environment, Fisheries and Aquaculture Sciences, UK FMC Biopolymer, Norway

Is this project reporting to other organizations/programmes?

Norwegian Research Council

Please log in to edit this record