How can the NRC approve the VY request to credit containment overpressure since it is not in conformance with NRC regulations?
The NRC staff will allow credit for containment accident pressure to be taken only when the licensee’s analyses and justification for the proposed licensing basis change demonstrate that there is reasonable assurance that the credited pressure will exist for the events and time period for which the credit is required. Ensuring containment integrity and avoiding overcooling of the containment due to excessive use of containment sprays are key considerations in determining whether the credited pressure will be available during the required time period. The NRC’s guidance regarding whether it is acceptable to credit containment accident pressure has evolved over the years. The current guidance is contained in Regulatory Guide (RG) 1.82, Revision 3, “Water Sources for Long-Term Recirculation Cooling Following a Loss-Of-Coolant Accident” dated November 2003. This RG describes methods acceptable to the NRC staff for implementing requirements with respect to the sumps and suppression pools pe
Related Questions
- What is the concern related to credit for containment overpressure? Will the NRC approve the request by VY to credit containment overpressure?
- How can the NRC approve the VY request to credit containment overpressure since it is not in conformance with NRC regulations?
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