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Forwards response to NRC 970814 & 980814 RAIs re use of containment overpressure for ensuring adequate NPSH for ECCS pumps at PBAPS Units 1 & 2.Encls 2-4 are calculations re min containment pressure & NPSH for RHR & CS sys pumps.

Accession Number: ML20151X850

Date Released: Saturday, June 13, 2020

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• ML20151X848 - Forwards response to NRC 970814 & 980814 RAIs re use of containment overpressure for ensuring adequate NPSH for ECCS pumps at PBAPS Units 1 & 2.Encls 2-4 are calculations re min containment pressure & NPSH for RHR & CS sys pumps. (15 page(s), 9/11/1998)
• ML20151X862 - Rev 1 to PM-1013, "Min Containment Pressure Available." (52 page(s), 6/22/1998)
• ML20151X872 - Rev 2 to PM-1010, "RHR Pump NPSH." (45 page(s), 6/23/1998)
• ML20151X881 - Rev 2 to PM-1011, "Core Spray Pump NPSH." (48 page(s), 6/23/1998)