Dr Rao was responsible for the design, construction and commissioning of the control systems of the two reactors built at Trombay -- Apsara and Zerlina. The work done by the Electronics Division has resulted in a wide variety of electronic equipment and components, such as reactor control instruments, nuclear electronic instruments, industrial equipment, test equipment, analogue computer, thermoelectric coolers, semiconductor devices, servo components and magnetic amplifiers being made available indigenously. Dr Rao organized a countrywide network of monitoring stations for determining the extent of environmental radioactive contamination resulting from nuclear explosions.