Abstract
In 500 MWe Prototype fast breeder reactor (PFBR), instrumentation for Post Accident Monitoring (PAM) is provided for monitoring the status of core and Reactor Containment Building (RCB) in case of Core Disruptive Accident (CDA). The instrumentation for PAM provides the operator with the necessary information by monitoring and displaying critical parameters. This paper details the parameters and how they are monitored.
Highlights
Energy is a vital component for development of economy and providing high quality of life to the citizens
When there is mismatch of power produced and power removed from the reactor, with shutdown systems failing to respond to the demand, certain parameters such as temperature, pressure and gamma activity in the core raise, causing Core Disruptive Accident (CDA)
When CDA occurs, parameters such as core neutron power, main vessel surface temperature, Reactor Containment Building (RCB) sodium activity, RCB air temperature, RCB air pressure and gamma field inside RCB may rise to considerably higher levels
Summary
Energy is a vital component for development of economy and providing high quality of life to the citizens. When there is mismatch of power produced and power removed from the reactor, with shutdown systems failing to respond to the demand, certain parameters such as temperature, pressure and gamma activity in the core raise, causing CDA. This leads to sodium boiling, core melting and pressure bubble formation in the main vessel. When CDA occurs, parameters such as core neutron power, main vessel surface temperature, RCB sodium activity, RCB air temperature, RCB air pressure and gamma field inside RCB may rise to considerably higher levels. The role of Post Accident Monitoring System (PAMS) is to acquire the above parameters signals, compare the acquired signals with the threshold values and transmit the processed information & parameters values through Safety Class-2 data highway and generate alarms in control room
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