Sunday August 20 , 2017
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Dose constraints

ERPAN (European Radiation Protection Authorities Network) carried out a survey in April 2010 on how dose constraints, as defined in the EU Directive are applied in the non-nuclear energy sector across Europe. The following questions were sent to the participants to the network.

  1. Does your country use dose constraints in the context of occupational exposures (non-nuclear sector)
  2. If so what are they called?
  3. Are occupational dose constraints mentioned in national legislation/regulations?
  4. If so, please provide a reference to the relevant regulations?
  5. Please provide (in English) the actual wording used in the regulations?
  6. For what industries, processes, tasks, types of workers – all workers? the most exposed workers? specific categories of workers? etc. – are dose constraints used?
  7. How are dose constraints used in practice?
  8. Why are dose constraints introduced?
  9. What are the benefits of introducing dose constraints?
  10. Who sets dose constraint (utilities or authorities)?
  11. How are dose constraints set e.g. for a set of sources or for individual sources?
  12. Are dose constraints “misused”, for example implicitly or explicitly as secondary limits (to dose limits)?
  13. Are dose constraints used as a regulatory instrument?
  14. Who manages performance against dose constraints and other occupational radiation protection criteria?
  15. In what context are dose constraints set: for sites (refers to design) or for tasks (refers to operation)?
  16. How are dose constraints fixed, implemented, and controlled in each of these cases?
  17. In practice, has enforcing (individual) dose constraints resulted in negative consequences (e.g. higher collective doses, increased costs, etc.)?
  18. What approaches have proven successful in discussing dose constraints between regulatory authorities and licensees?
  19. Have you any experience in balancing occupational radiation protection dose constraints with the management of other risks (e.g. industrial, chemical/biological safety issues)?

Answers from 11 countries were received: Belgium, France, Greece, Ireland, Luxembourg, Norway, Slovenia, Spain, Sweden, Switzerland and the UK. The detailed answers can be found in the Appendix 1 of the EGOE (Expert Group on Occupational Exposure of the CRPPH - Committee on Radiation Protection and Public Health) report on dose constraints. icon EGOE case study 2

A presentation was made of this survey in the ICRP symposium on the International System of Radiological Protection held at Bethesda on October 26th to 28th. icon ICRP presentation on dose constraints