Purpose and practice of radiation monitoring

Following a brief description of the biological effects of exposure to ionising radiation, and an explanation of the general philosophy of those engaged in the practice of radiation protection, a detailed account is given of the role which monitoring of various types plays in that practice. Two quite different types of monitoring are involved ¿¿ for radiation from sources external to the body, and monitoring for radioactive materials which may get inside the body, or are already there. In each case this involves monitoring of the working environment, of the worker, and monitoring of the general environment to check for the effects of any deliberate or accidental releases of radioactive materials which might affect the general public. The special arrangements which may be needed following an accident or emergency are also briefly discussed.