INSIDER Work Package 5 - Use Case 2 (BR3 Biological shield): Exercise performed by the SCK-CEN

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The INSIDER Project (Improved Nuclear SIte characterisation for waste minimisation in Decommissioning and Dismantling operations under constrained EnviRonment) aims to develop and validate a new and improved integrated characterization methodology and strategy during nuclear decommissioning and dismantling operations (D&D) of nuclear power plants, post-accidental land remediation or nuclear facilities under constrained environments. Under Work Package 5 “In Situ Measurements”, an inter-comparison exercise is prepared for the characterization of the biological shield of the reactor vessel of the BR3 research reactor under decommissioning at the SCK-CEN. For this purpose, the following measurements are required: - Ambient Dose Equivalent Rate, H*(10), at contact: 25 measurements (5x5) for each of three different points (A, B, and C). - Total gamma activity (Bq/cm2) at contact: 25 measurements (5x5) for each of three different points (A, B, and C). - Activity Concentration (Bq/g or Bq/m2) for isotopes of interest at 30 cm: open and close collimation measurements for point C. This document summarizes the results obtained for the different measurements, and presents the equipment and methodology used.


Original languageEnglish
PublisherSCK CEN
Publication statusPublished - 24 Jun 2019

Publication series

NameSCK•CEN Reports
PublisherStudiecentrum voor Kernenergie


  • decommisioning, initial characterization, In-situ measurement, intercomparison, BR3

ID: 5265573