Description This book contains the ICRP's recommendations for individual monitoring programmes and the interpretation of results of measurements for
intakes of radionuclides by workers. It follows the Commission's general principles of monitoring for radiation protection of workers
and should be used in conjunction with those principles. The book gives specific guidance on the design of programmes, the calculation
of derived reference levels and the interpretation of results. Since models are required to provide a link between the measured quantity
and the appropriate limits or reference values, general guidance on the models used is given. Specific values of derived reference levels
for radionuclides chosen for their importance in occupational exposure are provided. One of the major changes of principle in this report
is the use of a limit on the effective dose equivalent and a non-stochastic limit on dose equivalent to any organ.