Effectance, committed effective dose equivalent and annual limits on intake: What are the changes?

G. M. Kendall*, J. W. Stather, A. W. Phipps

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    The International Commission on Radiological Protection has recently published draft recommendations which include proposals for new weighting factors, WT for use in calculating effective dose equivalent, now called 'effectance'. The author outlines the concept of effectance, compares committed effectance with the old committed effective dose equivalence and goes onto discuss changes in annual limits on intakes and the maximum organ doses which would result from an intake of an ALI. It is shown that committed effectance is usually, but not always, higher than committed effective dose equivalent. ALIS are usually well below those resulting from the ICRP Publication 30 scheme. However, if the ALI were based only on a limit on effectance it would imply a high dose to specific organs for certain nuclides. In order to control maximum organ doses an explicit limit could be introduced. However, this would destroy some of the attractive features of the new scheme. An alternative would be a slight modification to some of the weighting factors.

    Original languageEnglish
    Article number001
    Pages (from-to)83-93
    Number of pages11
    JournalJournal of Radiological Protection
    Issue number2
    Publication statusPublished - 1990

    Bibliographical note

    Copyright 2007 Elsevier B.V., All rights reserved.


    Dive into the research topics of 'Effectance, committed effective dose equivalent and annual limits on intake: What are the changes?'. Together they form a unique fingerprint.

    Cite this