NRC CAL – NOV (White)

On July 1, 2014, the NRC issued a Notice of Violation associated with a White Significance Determination Process finding to Wolf Creek Nuclear Operating Corporation (Wolf Creek) for a violation identified at its Wolf Creek Nuclear Plant involving the failure to comply with 10 CFR 50.47(b)(9) which required the licensee to maintain an emergency plan that uses adequate methods for assessing and monitoring the actual or potential offsite consequences of a radiological emergency condition. Specifically, a calculational error in Wolf Creek's Electronic Dose Calculation Program (i.e., computer software) resulted in inaccurate offsite doses for the main vent stack pathway. The computer software failed to account for the filtered pathway for iodine and particulates thereby overestimating the radiological release when the effluent radiation monitor was in the accident mode.