Configuration functions basic components

Implementations of I C functions important to safety in nuclear power plants are increasingly realized with computer based systems, i.e. by its software. Often so called equipment families are used to develop these I C functions. Besides a hardware platform, these equipment families provide predeveloped software in the form of basic components from which I C functions can be composed by configuration and parameterization but also larger components which have been developed by conventional software engineering, as e.g. operating systems, I/O drivers, self-supervision software, etc. are included. Outside the equipment families, it may be desirable to introduce also other types of predeveloped software, e g. for simulation and for analysis purposes. 

Remote control units. These units are used to control unit processes. Basic control functions such as the PID algorithm are implemented here. Depending on other hardware components used, data acquisition capability may be required to perform digital control. They may be configured to supply process set points to single-loop controllers. Radio telemetiy may be installed to communicate with MUX units located at great distances. 

A method for the estimation of composite material performance from the characteristics of fillers and the matrices and from the configuration of filler is generally called the law of mixture. In the most basic form of the law of mixture, the characteristics of a composite material are represented as a function of characteristics of constituent components and their volume fractions, as shown in Fig. 3. For a composite material (characteris-ticsiA f) that consists of component A (characteristics Xa, volume fraction ) and component B (characteristics Xf, volume fraction b), the basic formulae of the law of mixture are as follows ... 

Recently, Cottin and Monson [101] have shown how the LJD theory can be applied to solid phase mixtures. The basic approximation they make (in addition to single-cell occupancy) is to write the configurational partition function for an n-component system as a product of cell partition functions expressed as... 

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