United Kingdom National Radiological

Riordon, A.C. James, G. Rae and A.D. Wrixon, Human Exposure to Radon Decay Products Inside Dwellings in the United Kingdom, National Radiological Protection Board, Chilton, Report NRPB-R152... 

James AC. 1978. Lung deposition of sub-micron aerosols calculated as a function of age and breathing rate. In National Radiological Protection Board Annual Research and Development Report. Harwell, United Kingdom National Radiological Protection Board. 71-75. 

National Radiological Protection Board (United Kingdom)... 

GELDER, R., Radiation Exposure from the Normal Transport of Radioactive Materials within the United Kingdom, NRPB-M255, National Radiological Protection Board, Chilton, UK (1991). 

It can be seen that the ICNIRP method effectively considers that a flux density that is 50% of the allowable limit at a given frequency has used 50% of the total allowance. A second occurrence at another frequency would consume the rest of the allowance, and any field, however small, at any other frequency would then cause a violation. Dutch regulations apply the same summation formulas as lO lIRP but use different values for the reference limits. In the United Kingdom, the National Radiological Protection Board uses its own values of reference limits and also applies its own summation formula [43]. 

Burling D, Halligan S, Slater A et al (2006a) Potentially serious adverse events at CT colonography in symptomatic patients national survey ofthe United Kingdom. Radiology 239 464-471... 

The authors are very grateful to Dr. Michael R. Bailey, National Radiological Protection Board of the United Kingdom, Chilton UK, for his thorough review and his editorial help to finish this manuscript. 

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