ENS 57365

v t e ENS Event
18:30 Oct 7, 2024
Title	STUCK-OPEN Gauge Shutter
Event Description	The following is a summary of information provided by the licensee via phone: While the licensee was performing semi-annual shutter functional checks, on the initial attempt to close one normally open Vega gauge shutter, resistance was felt. The shutter mechanism was lubricated and a second attempt to close the shutter was made some time later. During this second attempt, two bolts connecting the handle to the shutter sheared off. This disabled the shutter operating mechanism, leaving the shutter stuck open. The licensee verified area radiation levels were unchanged. The licensee has contacted the manufacturer for assistance in repairing the gauge. The licensee has notified the NRC regional inspector.

ENS 57365 +/-
Where
Hemlock Semiconductor Saginaw, Michigan (NRC Region 3)
License number:	21-32682-01
Organization:	Hemlock Semiconductor
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+-2.55 h-0.106 days <br />-0.0152 weeks <br />-0.00349 months <br />)
Opened:	Jessica Kelly 15:57 Oct 7, 2024
NRC Officer:	Robert A. Thompson
Last Updated:	Oct 7, 2024
57365 - NRC Website
v • d • e

v t e Emergency Notification System
Hemlock Semiconductor with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2024-10-07T18:30:00 [Table view]
[ENS list for Hemlock Semiconductor]

Navigation menu