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On 10/18/10 at approximately 8:32 am, the … On 10/18/10 at approximately 8:32 am, the site Radiation Safety Officer (RSO) was contacted by a radiation worker at the 80" Hot Strip Mill location, indicating that the shutter on one of the slab detection radiation gauges would not close. The worker was in the process of performing a semi-annual wipe test when the situation was noticed. </br>The RSO directed site workers to barricade the area until he arrived. Upon arrival, the RSO conducted a survey of the area, compared the levels to a prior survey and found no significant difference in radiation levels. The RSO also performed a wipe test on the gauge and checked it with a survey meter and pancake probe, finding no detectable contamination. The radiation worker was directed to check the device counts using a survey meter and to compare them to counts on an adjacent gauge. The counts were similar, indicating proper function. </br>A melted metallic material was noted adjacent to the gauge whose shutter would not close. The material was analyzed and it showed to be 90-95% lead. As a result, it is believed some shielding may have overheated and blocked the shutter open or debris entered the shutter arm blocking it from closing. Although radiation levels in the area are normal, the RSO will attempt to safely remove the gauge to a secure location until the device can be serviced by the manufacturer. </br>The Cs-137 source is S/N 6326CM of a slab detection device manufactured by Ronan Engineering. device manufactured by Ronan Engineering. +
11:00:00, 18 October 2010 +
46,341 +
13:38:00, 18 October 2010 +
11:00:00, 18 October 2010 +
On 10/18/10 at approximately 8:32 am, the … On 10/18/10 at approximately 8:32 am, the site Radiation Safety Officer (RSO) was contacted by a radiation worker at the 80" Hot Strip Mill location, indicating that the shutter on one of the slab detection radiation gauges would not close. The worker was in the process of performing a semi-annual wipe test when the situation was noticed. </br>The RSO directed site workers to barricade the area until he arrived. Upon arrival, the RSO conducted a survey of the area, compared the levels to a prior survey and found no significant difference in radiation levels. The RSO also performed a wipe test on the gauge and checked it with a survey meter and pancake probe, finding no detectable contamination. The radiation worker was directed to check the device counts using a survey meter and to compare them to counts on an adjacent gauge. The counts were similar, indicating proper function. </br>A melted metallic material was noted adjacent to the gauge whose shutter would not close. The material was analyzed and it showed to be 90-95% lead. As a result, it is believed some shielding may have overheated and blocked the shutter open or debris entered the shutter arm blocking it from closing. Although radiation levels in the area are normal, the RSO will attempt to safely remove the gauge to a secure location until the device can be serviced by the manufacturer. </br>The Cs-137 source is S/N 6326CM of a slab detection device manufactured by Ronan Engineering. device manufactured by Ronan Engineering. +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 18 October 2010 +
13-32670-01 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
22:29:20, 24 September 2017 +
13:38:00, 18 October 2010 +
0.11 d (2.63 hours, 0.0157 weeks, 0.0036 months) +
11:00:00, 18 October 2010 +
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