*Part I (Planning and Layouts) of this Paper has been published in October 1968 Issue of the Journal.
The Rana Pratap Sagar Power Station with a total installed capacity of 172 MW. forms the second step in the unified development of the River Chambal comprising a cascade of three dams and a barrage awl providing major power and irrigation benefits to south eastern Rajasthan. The various aspects of the planning of this cascade as well as of the Rana Pratap Sagar Project, its hydrological problems and power potential and the layout of the works of the Rana Pratap Sagar Project had been discussed in Part I of this paper. The power station is situated on the left abutment of the main dam just below the power dam section. The tail-water is discharged through a 12.2 m. diameter, 1466 m. long tail-race tunnel so as to utilise a 10 m. drop at a fall in the river below the dam, along with the head created by the dam, (Figure 6). The power station is consequently located in a deep pit below the power dam, section and is followed, by a, large surge basin with a surface area (in excavated portion) of-5,660 sq. m. The tail-water rise which is already high in the river bed, is further aggravated by the configuration of the works and tail-water surges, so that the power station has had to be made water tight up to practically the crane rail level and has acquired the character of a semi- underground power station. The layout has been made very compact, the transformer-yard and switchyard being accommodated between the dam and power station (See Part 1 and, Figure 6), Details of the main plant, auxiliary equipment and areas, control systems, station service systems, switchyard and switchgear as well as some aspects of construction programming and installation work have been discussed in this part of the paper.
