§ Mr. Frank Cook
asked the Paymaster General why the effective dose equivalent concept and the use of organ weighting factors as recommended by the International Commission on Radiological Protection was incorporated into the Ionising Radiation Regulations 1985; and whether it is possible under the regulations for a worker to show a lower recorded dose for a given exposure than under the system of dose limitation.
§ Mr. Trippier
The effective dose equivalent concept, which involves the use of organ weighting factors, was incorporated into the Ionising Radiations Regulations 1985 because it represented the most recent recommendation of ICRP, was included in EC Directives 80/836/Euratom and 84/467/Euratom which the Regulations implement, and was the advice of the National Radiological Protection Board.
It is not possible for the dose recorded for a worker for a given exposure to be less than that calculated using the ICRP system.