ENS 46737

v t e ENS Event
04:00 Apr 7, 2011
Title	Defect in Rotork'S 30Na1 Motor Cover Casting
Event Description	A manufacturing defect was discovered in Rotork's 30NA1 motor cover casting part number 4748. When stroking the valve, the motor cover supports the loads developed from the stator torque and the rotor thrust reactions. The failure occurred at the rotor end bearing support. Investigation has shown that the casting was not manufactured to the drawing specification. The manufacturer is searching their spares database to determine where it has supplied the motors and will inform the utilities once this list is complete.

ENS 46737 +/-
Where
Rotork Controls, Inc Rochester, New York (NRC Region 1)
Organization:	Rotork Controls, Inc
Reporting

10 CFR 21.21
Time - Person (Reporting Time:+11.37 h0.474 days <br />0.0677 weeks <br />0.0156 months <br />)
Opened:	Robert H. Arnold 15:22 Apr 7, 2011
NRC Officer:	Charles Teal
Last Updated:	Apr 7, 2011
46737 - NRC Website
v • d • e

v t e Emergency Notification System
Rotork Controls, Inc with 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation
WEEKMONTHYEAR2011-04-07T04:00:00 [Table view]
[ENS list for Rotork Controls, Inc]

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