Maintenance of hydro-electric plant

The paper discusses the maintenance of both pumped storage and conventional hydro-electric plant in the United Kingdom, dealing specifically with the experiences of one Group of the North of Scotland Hydro-Electric Board. The types of hydro-electric plant considered are geographically well spread and are subject to a number of different hydraulic regimes. A computer program developed for the best utilisation of maintenance resources entitled `generation equipment maintenance¿¿ (GEM) is introduced and discussed.