Background: Emergency Diesel Generator (EDG) sets are used in nuclear power plant to enable safe shut down. In emergency events, back up power is provided by emergency DG sets, and hence are very important from nuclear power plant safety. Regulatory agencies such AERB (in India) give out detailed guidelines on making the design of emergency DG sets, safe. NRC document 0420-E111 discusses the regulatory framework and regulatory framework for redundant independent emergency power systems. IAEA...