ENS 52450

v t e ENS Event
21:10 Dec 20, 2016
Title	Shutter and Shutter Mechanism Separated from Source Holder
Event Description	On December 20, 2016 [at approximately] 1510 CST, a [level detector] nuclear source holder was found fallen off of its mounting on the unit 2 economizer hopper #49. The shutter mechanism and the shutter appear to have separated from the source holder. This occurred at the Indiana Michigan Power Rockport plant in Rockport, Indiana. The source holder is a Vega Americas Model SHLD-1-45, serial number: 7185CP. It is a 20 millicurie Cesium 137 source. The plant's general license number is GL704402-21. The radiation around the fallen source holder was tested and found to be a maximum of 35 millirem/hr at 1 foot in the source beam path. The radiation was tested at the 20 foot boundary where danger tape has been placed around the source holder and readings of 0.08 to 0.12 millirem/hr were noted. A nuclear technician from Vega Americas is currently on his way to the plant and we are planning to attempt to repair the source holder this evening [December 21]. If we are unable to repair the source holder it will be prepared for shipping and will be sent back to Vega Americas' office in Cincinnati, Ohio for repair.

ENS 52450 +/-
Where
Indiana Michigan Power Rockport, Indiana (NRC Region 3)
License number:	GL704402-21
Organization:	Indiana Michigan Power
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+16.98 h0.708 days <br />0.101 weeks <br />0.0233 months <br />)
Opened:	Steven Pfeister 14:09 Dec 21, 2016
NRC Officer:	Howie Crouch
Last Updated:	Dec 21, 2016
52450 - NRC Website
v • d • e

v t e Emergency Notification System
Indiana Michigan Power with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2016-12-20T21:10:00 [Table view]
[ENS list for Indiana Michigan Power]

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