Nickel Plating for Improved Electrical Contact to Aluminum

A plating for electrical contact surfaces should be selected on the bases of acceptable electrical characteristics (in conjunction with common contact surfaces) and of adequate corrosion resistance in the anticipated environments. One of the problem electrical interfaces which must be considered is between the selected plating and nonplated aluminum contact surfaces.     

Evaluation of nuclear system requirements for accommodating seismic effects

An integrated approach is presented for the design of nuclear facilities to accommodate seismic effects. Site evaluation and soil-structure interaction are discussed briefly since they determine the magnitude and characteristics of the input forcing function to be used in the analysis. The evaluation of the requirements of the nuclear system to accommodate the effects of specified seismic input forces involves the classification of components of the system, development of a mathematical model which adequately defines and relates the components of the system, consideration of coupling and resonance effects on the interactions among the components, selection of the methods of analysis and choice of the methods of solving the resulting equations. Specific design considerations and criteria for judging the acceptability of the design are discussed.