The effect of the exposure time on the value of a manSievert averted |
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Authors: | PJ Thomas RD Jones |
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Institution: | aRisk Management, Reliability and Maintenance (RM2) Centre, School of Engineering and Mathematical Sciences, City University, Northampton Square, London EC1V 0HB, United Kingdom |
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Abstract: | The basis of the manSievert as a unit for collective radiation dose is discussed and previous recommendations are considered for how much should be spent to avert a collective dose of 1 manSv. New calculations are given using the J-value method. It is shown that the value to be assigned to averting a manSievert depends on the duration of averted exposure as well as on the net discount rate and the loan rate thought to be appropriate. Different figures will result depending on whether the exposed group consists of workers or the general public. The variation with dose duration is so large that it is not possible to recommend a single figure for the value of a manSievert. Instead, tables are given at two conservative, loan and net discount rates for the value of a manSievert as a function of exposure time. The base data for the J-value method need to be updated annually, and this means that the values given in the tables will increase over time as people live longer and become richer. |
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Keywords: | Health Safety Nuclear Radiation Short exposure Prolonged exposure Life expectancy Risk J-Value manSievert |
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