IEC 61098-2003 pdf – Instrumentation pour la radioprotection – Ensembles fixes pour la surveillance de la contamination de surface du personnel Radiation protection instrumentation – Installed personnel surface contamination monitoring assemblies.
1 Scope and object This International Standard applies to contamination warning assemblies, meters and monitors used for the monitoring of radioactive contamination on the surface of personnel whether they be clothed or not. The standard is applicable only to that type of equipment where the user takes no action other than to present himself and/or his hands and feet to the detectors. It is not applicable to equipment where the user or someone else moves detectors over the area to be monitored or the user passes quickly through the monitor. It is also not applicable to any peripheral equipment which may be associated with a particular type of equipment such as small article monitors. This standard is applicable to the monitoring of the whole body (including the face), hands and feet but parts of this standard may be used for equipment designed for the monitoring of radioactive contamination on the hands and/or feet only. This standard is applicable to: – installed personnel monitoring equipment (all Clauses applicable); – equipment for monitoring the hands (see the following Clauses and Subclauses: 2, 3, 4, 5, 6, 7.1 .2, 7.2, 7.3.2, 7.4.1 .2 b), 7.4.2, 220.127.116.11 , 18.104.22.168, 22.214.171.124 b), 7.5, 7.6, 7.7, 8, 9, 1 0, 1 1 and 1 2); – equipment for monitoring the feet (see the following Clauses and Subclauses: 2, 3, 4, 5, 6, 7.1 .3, 7.2, 7.3.3, 7.4.1 .2 c), 7.4.2, 126.96.36.199 , 188.8.131.52, 184.108.40.206 c), 7.5, 7.6, 7.7, 8, 9, 1 0, 1 1 , 1 2 and 1 3); – equipment for monitoring the hands and feet (see the following Clauses and Subclauses 2, 3, 4, 5, 6, 7.1 .2, 7.1 .3, 7.2, 7.3.2, 7.3.3, 7.4.1 .2 b), 7.4.1 .2 c), 7.4.2, 220.127.116.11 , 18.104.22.168, 22.214.171.124 b), 126.96.36.199 c), 7.5, 7.6, 7.7, 8, 9, 1 0, 1 1 and 1 2). The object of this International Standard is to define mechanical and operational character- istics, minimum performance characteristics and general test procedures for personnel monitoring equipment.
IEC 60050(394):1 995, International Electrotechnical Vocabulary (IEV) – Chapter 394: Nuclear instrumentation: Instruments IEC 60777:1 983, Terminology, quantities and units concerning radiation protection IEC 61 000-4-2:1 995, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques – Section 2: Electronic discharge immunity test. Basic EMC publication IEC 61 000-4-3:2002, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measure- ment techniques – Radiated, radiofrequency, electromagnetic field immunity test IEC 61 000-4-5:1 995, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques – Section 5: Surge immunity test IEC 61 000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measure- ment techniques – Immunity to conducted disturbances, induced by radio-frequency fields IEC 61 000-4-8:1 993, Electromagnetic compatibility (EMC) – Part 4: Testing and measuring techniques – Section 8: Power frequency magnetic field immunity test IEC 61 000-4-1 2:1 995, Electromagnetic compatibility (EMC) – Part 4: Testing and measuring techniques – Section 12: Oscillatory waves immunity test IEC 61 1 87:1 993, Electrical and electronic measuring equipment – Documentation ISO 8769:1 988, Reference sources for the calibration of surface contamination monitors – Beta-emitters (maximum beta energy greater than 0,15 MeV) and alpha-emitters
3.1 1 reference background artificial background created to simulate the maximum ambient background for which the equipment is designed NOTE This background includes the naturally occurring background and additional radiation provided by a source of Caesium 1 37 (or other radionuclide by agreement between the purchaser and manufacturer) placed at least 3 m from the detector of interest of the equipment under test. 3.1 2 uniformity of surface emission rate of sources 2 uniformity of a surface in respect to the surface emission rate in relation to the average surface emission rate. For the purpose of specifying the uniformity of a source in respect to surface emission rate per unit area, the source shall be considered as being made up of a number of portions of equal area. The uniformity shall then be specified as the estimated coefficient of variation of measurements of the individual portions about the mean value for the whole surface. The area of the portions shall be 1 0 cm 2 or less. Uniformity may be measured by inserting a masking plate between the source and the counter. The masking plate should have an aperture of appropriate size and should be of a thickness sufficient to absorb particles of the maximum energy emitted in the case of alpha and beta emitters and shall in the case of gamma radiation be such that no count shall be greater than twice that expected if the absorber were perfect (i.e. more than the half thickness for the energy being used). The uniformity shall be expressed as a percentage (knowledge of uniformity will make it possible to use smaller areas of the source while maintaining traceability)