ENS 47226

v t e ENS Event
04:00 Aug 2, 2011
Title	Agreement State Report - Shutter Mechanism Failure
Event Description	The following information was obtained from the Commonwealth of Pennsylvania via facsimile: EVENT DESCRIPTION: Failure of the shutter mechanism on one of its generally licensed thickness gauges was identified immediately to operators through a computer based warning message and visually by a red status light adjacent to the gauge location. Adjustment of the air supply allowed the shutter to close but still not operate properly. Routine maintenance activities were not successful in allowing the shutter to return to operational status and Applied Health Physics were notified to provide radiological support. No radiation exposure to personnel ensued during this event. The device is identified as: Manufacturer (IRMS), Model (TG-2), Serial# (00M0397-I5), Isotope (Americium-241), Activity (3 Ci), Location (Cold Reduction Mill). CAUSE OF THE EVENT: A faulty actuator cylinder. ACTIONS: The shutter mechanism was replaced, tested, and confirmed as operating properly. The actuator cylinder will be placed on a preventive maintenance schedule following this event. PA Report No.: PA110022

ENS 47226 +/-
Where
U.S. Steel West Mifflin, Pennsylvania (NRC Region 1)
License number:	PA-G0309
Organization:	Pa Bureau Of Radiation Protection
Reporting

Agreement State
Time - Person (Reporting Time:+706.68 h29.445 days <br />4.206 weeks <br />0.968 months <br />)
Opened:	Joseph Melnic 14:41 Aug 31, 2011
NRC Officer:	Howie Crouch
Last Updated:	Aug 31, 2011
47226 - NRC Website
v • d • e

v t e Emergency Notification System
U.S. Steel with Agreement State
WEEKMONTHYEAR2011-09-28T13:30:00 [Table view]
[ENS list for U.S. Steel]

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