Anderson

In considering the alternatives of weapons plutonium management, it is necessary to estimate the safety for the population and environment. A great deal of attention has been given to this problem in recent years. 

Safety is defined as the absence of factors causing damage to man or the environment. It is a probabilistic value which quantitatively can be expressed in terms of the size of a risk level by an estimation of the probability of different kinds of events and the possible damage from each event (probabilistic analysis of risk). 

All the events, depending on the possible frequency of their occurrence, can be divided into a number of categories anticipated, unlikely, very unlikely, and incredible (Table 1). 

The consequences of events can be catastrophic, heavy, moderate or harmless. It is natural that the largest risks have the most probable incidents with catastrophic or heavy consequences. As is known, some variants of manipulation with weapons plutonium (Fig. 1) are considered now. 

From the position of estimations of risk level for man and the environment, the safest way of manipulating weapons plutonium is its immobilization in stable forms with subsequent burial in geological formations. 

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In this monograph we use for g the UNIQUAC model of Abrams (1975) as slightly modified by Anderson (1978)... 

As indicated in Chapter 6, and discussed in detail by Anderson et al. (1978), optimum parameters, based on the maximum-likelihood principle, are those which minimize the objective function... 

The method used here is based on a general application of the maximum-likelihood principle. A rigorous discussion is given by Bard (1974) on nonlinear-parameter estimation based on the maximum-likelihood principle. The most important feature of this method is that it attempts properly to account for all measurement errors. A discussion of the background of this method and details of its implementation are given by Anderson et al. (1978). 

H. H. Storch, H. Golumbic, and R. R. Anderson, The Fischer-Tropsch and Related Systems, Wiley, New York, 1951. 

M. A. Vannice, in Catalysis—Science and Technology, J. R. Anderson and M. Boudart, eds.. Springer-Verlag, New York, 1982. 

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