ENS 50172

v t e ENS Event
07:00 Jun 4, 2014
Title	Part 21 - Defect Identified in Single Loop Operation Minimum Critical Power Ratio
Event Description	The following is a synopsis of information received via facsimile from AREVA: AREVA identified a defect is in the calculation of the single loop operation (SLO) minimum critical power ratio (MCPR) operating limits for Browns Ferry Units 1, 2, and 3. Specifically, the defect is associated with the usage of non-conservative inputs in the SLO pump seizure analyses for the three plants, which results in non-conservative limits for SLO. Individual informing the Commission: Alan B. Meginnis, AREVA Inc., 2101 Horn Rapids Road, Richland, WA 99354.

ENS 50172 +/-
Where
Areva Inc Richland, Washington (NRC Region 4)
Organization:	Areva Inc
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+8.37 h0.349 days <br />0.0498 weeks <br />0.0115 months <br />)
Opened:	Alan B Meginnis 15:22 Jun 4, 2014
NRC Officer:	Charles Teal
Last Updated:	Jun 4, 2014
50172 - NRC Website
v • d • e

v t e Emergency Notification System
Areva Inc with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2014-06-04T07:00:00 [Table view]
[ENS list for Areva Inc]

Navigation menu