NRC CAL – NOV (White)

On February 7, 2007, a Notice of Violation associated with a White Significance Determination Finding was issued involving the failure to select an appropriate method for calculating the minimum elevation (i.e., the analytical level) of water above the high pressure core spray (HPCS) pump suction line to preclude vortex formation and subsequent air entrainment in the pump's suction. As a result, the analytical level would result in significant air entrainment potentially causing the HPCS to be incapable of completing its safety function.