Predicting Worker Exposure from a Glovebox Leak.

Jordan, H. ; Gordon, D. J. ; Wicker, J. J. ; Wannigman, D. L.

Technical Information Center Oak Ridge Tennessee

关键词: Gloveboxes;    Leaks;    Occupational exposure;    Radiation doses;    Radiation effects;   

RP-ID  :  DE2001781642

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In this report, we present such a means in the form of a simple calculation model that is easily applied and generates reasonable, qualitative dose predictions. The model contains a scaling parameter whose value was deduced from extensive laboratory ventilation flow rate measurements performed at Los Alamos National Laboratory (LANL) over the last several years and from recent indoor radioactive contamination dispersion measurements, also at LANL. Application of the model is illustrated with the aid of two example calculations. Predicting immediate worker radiological consequences from a hypothetical airborne leak from a glovebox is difficult. This difficulty is recognized in DOE safety analysis guidance in general and the reason that such guidance does not call for quantitative determinations of immediate worker consequences from postulated accidents. In contradistinction, however, DOE safety analysis guidance provides specific approaches to evaluating consequences to an offsite individual. The reason that worker consequences from such events are difficult to predict is that their phenomenology is impossible to define (predict) to the precision required. This situation arises from the fact that both the distance from source to the receptor and the duration of exposure are short. Uncertainties in the location of the worker (relative to the source) and the duration of exposure are therefore large fractions of their respective absolute values.