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Environmental and Source Monitoring for Radiological

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Additional info for Environmental and Source Monitoring for Radiological Protection (IAEA RS-G-1.8)

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15. Source monitoring in the context of this Safety Guide refers to the measurement of authorized discharges and of the radiation field around the source itself. The discharges to the environment may be in the form of gases, aerosols or liquids. The relative activity of the discharges may change in abnormal situations and the external radiation fields around the source may be increased. 16. g. rates of discharge and radionuclide compositions). 17. The design of the source monitoring programme should be such as to enable the verification of compliance with the authorized limits on discharges and the criteria for discharges specified by the regulatory body.

Any monitoring system devised for use after the closure of the waste repository should not intrude into the barriers designed to contain the radionuclides. 44. The future behaviour of the waste in a facility should be assessed as part of the safety assessment process carried out under the licensing procedure [1, 5]. A condition for authorization of the disposal facility by the regulatory body should be the finding that any predicted migration of radionuclides from the facility will not result in the relevant dose criteria established by the regulatory body being exceeded.

14. The critical group for a particular set of circumstances should be selected carefully. Adequate attention should be paid to the habits of ethnic and cultural minorities as well as those of indigenous people where applicable. Their living patterns and habits of consumption of food and water could give rise to pathways and elevated exposure levels that are unanticipated by conventional analysis. 15. One of the major aspects of the selection is the size of the critical group, which is strongly influenced by the above mentioned requirement for homogeneity.

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