Grid electrical disturbances (GEDs) are characterized by variances in grid voltage and frequencies that result from transient imbalances between generation and load. Nuclear plant response to GEDs is constrained by process system limitations and design limitations in power system hardware. This report includes discussions based upon selected past studies which provide an introductory background to GED phenomena and nuclear plant response. A system frequency response model is derived for estimating load-frequency relationships during transient conditions. The analysis of two recent industry surveys is included which relates actual nuclear plant experience with GEDs, identifies design changes and operating procedures which have been used to mitigate the effects of GEDs, and provides data on plant transient monitoring systems. A model plant analysis is included, illustrating application of System Sequence Analysis methodology to the analysis of nuclear plant response to GEDs.