LOCA (loss-of-coolant accident) analysis of a proposes power increase for MURR (Missouri University Research Reactor) using RELAP5/MOD2

The University of Missouri Research Reactor (MURR) has been licensed to operate at 10 MW power since 1974. A preliminary study to increase its present power to a much higher level (/approx/30 MW) shows that this is readily achievable for steady-state operating conditions. The methods used to approach the goal of power upgrade operation include the flattening of the radial power distribution by varying the fuel loading of the plates, and the changing of operating conditions so as to provide a somewhat higher flow rate and greater heat exchanger capability. These changes are easily accomplished without major alterations to that portion of the primary system within the pool portion of the loop. However, one of the principal considerations in the power upgrade study for licensing is the loss-of-coolant accident (LOCA), which is addressed in this analysis.