10 CFR 50.65(a)(4) states, in part, that before performing maintenance activities, the licensee shall assess and manage the increase in risk that may result from the proposed maintenance activities. Contrary to the above, on January 26, 2011, the licensee did not assess and manage an increase in risk when the A Station Air compressor was removed from service for eight hours while the E Instrument Air Dryer was tagged out of service. The resultant risk management profile with these two activities occurring simultaneously increased from Green to Yellow. The conflict was not scheduled and the Yellow risk profile was not planned; therefore, the appropriate risk management actions were not implemented. The inspectors determined that the violation was not greater than very low safety significance (Green) because the increased risk was qualitative, with no quantitative increase in the Incremental Core Damage Probability. The issue is documented in the licensees corrective action program as
PIP C-11-0627.