ENS 51059

v t e ENS Event
07:00 Oct 1, 2014
Title	Agreement State Report - Shutter Stuck Open on a Fixed Gauge
Event Description	The following information was received from the State of California via email: At 1510 [PDT] on May 7, 2015, the licensee notified us [California Radiation Control Program] that the shutter on their belt weight scale on the Coarse Gangue Belt in Plant 1 is stuck in the open position. This is a generally licensed device (Berthold Technologies, Model: LB300L, s/n: 17729-1061-10003 containing 18 mCi Cs-137). The shutter malfunction was initially found during their six month shutter check in October 2014, however, the licensee only became aware of the reporting requirement last week when they contacted the manufacturer to repair the device. The device is in a restricted area 100 feet above the ground on a conveyance structure. The source is below the belt and the beam path is upward with no real exposure potential to any personnel in the area. The only way to access the belt and the source is via a catwalk which is not in the beam path. The dose rate on the catwalk is approximately 0.4 mRem/hr. CA 5010 Number: (Date Notified): 050715

ENS 51059 +/-
Where
Rio Tinto Minerals / U.S. Borax Boron, California (NRC Region 4)
License number:	GLD57
Organization:	California Radiation Control Prgm
Reporting

Agreement State
Time - Person (Reporting Time:+5261.55 h219.231 days <br />31.319 weeks <br />7.207 months <br />)
Opened:	Donald Oesterle 12:33 May 8, 2015
NRC Officer:	Steve Sandin
Last Updated:	May 8, 2015
51059 - NRC Website
v • d • e

v t e Emergency Notification System
Rio Tinto Minerals / U.S. Borax with Agreement State
WEEKMONTHYEAR2014-10-01T07:00:00 [Table view]
[ENS list for Rio Tinto Minerals / U.S. Borax]

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