[en] A Nordic exercise named ODIN was held 26. November 1993. This was an exercise of management of the last phase of a nuclear accident. The report gives an evaluation of the Norwegian management of the exercise. 2 refs., 3 figs

[en] The report contains the activity program for the Norwegian Radiation Protection Authority (NRPA) in 1999 together with a survey of NRPA's aims and strategy

[en] The report describes the activities at the Norwegian Radiation Protection Authority during 1998. Lists of staff, publications and conference papers are included

[en] The report describes the activities at the Norwegian Radiation Protection Authority during 1993. Lists of staff, publications and conference papers are included

[en] The Russian nuclear submarine Komsomolets went down about 180 km southwest of the Bear Island in the Norwegian Sea on April 7, 1989. According to Russian information the submarine contains one nuclear reactor and two torpedoes with nuclear warheads. The Norwegian Radiation Protection Authority has taken part in the Russian expeditions to the accident site since 1991. This is a report from the expeditions in 1993 and 1994. It includes sampling, analysis and results obtained by the Norwegian part. 5 refs., 4 figs., 5 tabs

[en] Since 1987 sheep grazing in the areas of Norway that received Chernobyl-fallout have been monitored before slaughter. These monitoring data formed the basis for development of a model describing the long term behaviour of radiocesium in unimproved pasture showing that in years with good mushroom abundance 70-80% of the radiocesium concentration in sheep is due to fungi consumption. A study of sampling strategy and variability of radiocesium concentration within flocks was also performed. 55 refs., 31 figs., 15 tabs

[en] During 1994 a large number of samples from the marine environment have been measured. Regarding fish, 22 samples have been measured for all gamma emitting radioisotopes using HPGe detectors. Four pooled samples have been analyzed for ⁹⁰Sr, three pooled and seven single samples have been measured for plutonium. Approximately 900 samples have been analyzed for radiocaesium using equipment with higher detection limit. In addition, 21 samples of minke whale, one sample of prawns, ten samples of seaweed, and four samples of sea-water have been analyzed for gamma emitters. Three seaweed samples and three sea-water samples have been analyzed for ⁹⁰Sr and plutonium. So far, all the samples have confirmed the low levels of radioactivity in the North Atlantic Ocean. The fish samples which have been measured for all gamma emitting isotopes show activity levels of ¹³⁷Cs of approximately 1 Bq/kg and up to 3 Bq/kg for one single sample of meat. In addition, selected samples are measured for ⁹⁰Sr and plutonium isotopes. These radionuclides are found in levels up to 0.5 Bq/kg and 1.3 mBq/kg for ⁹⁰Sr and ^239,240Pu, respectively. Compared to the intervention levels for foodstuffs, the levels found in marine fish from the Norwegian fishing areas are negligible. Measurements have also been carried out on other kinds of seafood, i.e. prawns and whale meat. These samples showed a maximum value of 0.18 and 5.9 Bq/kg¹³⁷Cs, respectively. Samples of seaweed and sea-water also confirm these low levels of contamination. 19 refs., 6 figs., 5 tabs

[en] The report contains annual dose statistics for occupational exposure in Norway for 1992. For the dosimetry service at the Norwegian Radiation Protection Authority (NRPA), the total collective dose registered by personal dosemeters was equal to 3.1 manSv. The number of monitored workers amounted to appr. 85000. 3 tabs

[en] At the Norwegian Radiation Protection Authority, an inspection body dedicated to the national breast cancer screening programme has been established. This report contains results from the acceptance tests and status control carried out during the first year of the project. The results show that the equipment is performing properly, and that the image quality is fully satisfactory at all sites. 10 refs., 13 figs., 2 tabs

[en] Deposits of naturally occurring radioactive materials is an increasing problem in Norwegian oil and gas production. Activity concentration in solid-state samples and production water, and doses to workers involved in different operations off-shore, have been measured. The report also includes a discussion of different methods of monitoring and alternatives for final disposal of wastes. 154 refs