Huggins T R, Watson J E
Health Phys. 1984 Apr;46(4):775-81. doi: 10.1097/00004032-198404000-00003.
Hand radiation doses to workers at a nuclear power plant were monitored in this study to evaluate compliance with dose limits and to determine whether hand monitoring on a routine basis is necessary. Two hundred in-plant workers at Carolina Power and Light Co.'s H.B. Robinson Steam Electric Generating Plant were monitored with a ring TLD dosimeter on each hand for four months during routine plant operations. Study participants included plant operators, electricians, mechanics, health physics technicians and decontamination personnel. Ring dosimeters were worn, in addition to whole-body TLD dosimeters, at all times workers were in radiation control areas. Hand dosimeters were read on the same monthly schedule as the whole-body dosimeters to ensure correlation of exposure periods. The results of the analysis of hand-dose data obtained for these workers are summarized as follows: (1) No worker's hand dose exceeded 25% of the allowable quarterly dose. (2) Ninety-nine percent of hand doses were less than 600 mrem/month. (3) The highest hand dose observed in any month was 1074 mrem which if received for three months, is below regulatory dose limits and below the dose value where monitoring is required. The highest actual hand dose observed in the last quarter of 1981 was 1335 mrem. (4) Examination of hand dose to whole-body dose ratios revealed that if the whole-body dose limit is approached, hand doses are still below the dose level where monitoring is required. (5) A linear-regression analysis of hand and whole-body dose data provides the ability to predict hand doses from the whole-body doses. From these results, it is concluded that routine monitoring of hand doses is not required at the H.B. Robinson plant. This conclusion should also be applicable to routine operations at other similar nuclear plants.
本研究对核电站工人的手部辐射剂量进行了监测，以评估是否符合剂量限制，并确定是否有必要进行常规手部监测。在卡罗来纳电力与照明公司的H.B. 罗宾逊蒸汽发电站，200名厂内工人在工厂日常运行期间，每只手佩戴一枚环形热释光剂量计，监测了四个月。研究参与者包括工厂操作员、电工、机械师、健康物理技术员和去污人员。除了全身热释光剂量计外，工人在辐射控制区域内时始终佩戴环形剂量计。手部剂量计与全身剂量计按相同的月度时间表读取，以确保暴露期的相关性。这些工人手部剂量数据的分析结果总结如下：(1) 没有工人的手部剂量超过季度允许剂量的25%。(2) 99%的手部剂量每月小于600毫雷姆。(3) 在任何一个月观察到的最高手部剂量为1074毫雷姆，如果持续三个月，低于监管剂量限制且低于需要进行监测的剂量值。1981年最后一个季度观察到的最高实际手部剂量为1335毫雷姆。(4) 对手部剂量与全身剂量之比的检查表明，即使接近全身剂量限制，手部剂量仍低于需要进行监测的剂量水平。(5) 对手部和全身剂量数据进行线性回归分析，可以根据全身剂量预测手部剂量。根据这些结果得出结论，H.B. 罗宾逊工厂无需对手部剂量进行常规监测。这一结论也应适用于其他类似核电站的日常运行。
