Browse wiki
Jump to navigation
Jump to search
The following information was received via … The following information was received via E-mail:</br>The Radiation Safety Officer with Mistras Group, Inc. contacted the Radiologic Health Branch regarding an incident with an Ir-192 radiography source that was determined to be locked out of its exposure device. The source was an Industrial Nuclear Model 32 Ir-192 source, Serial Number 550F, with an activity of 63.4 Curies. The device was an Industrial Nuclear Ir-100, Serial Number 4358. The incident occurred during radiography operations at a refinery in El Segundo.</br>After a routine exposure, the radiographer retracted the source. The radiographer then proceeded with the radiation survey that showed a dose rate of 80 mR/hr approximately 2 feet from the exposure device, indicating that the source was not in the locked and shielded position. The radiographer contacted the RSO who instructed them to readjust the restricted area boundary to maintain 2 mR/hr dose rate.</br>After the RSO arrived at the site, they placed shielding to reduce the dose rate while performing retrieval and returning the source to the locked and secured position. The device was then red tagged and placed out of service until it could be evaluated by the manufacturer. The highest dose received by Mistras Personnel (RSO) was 20 mrem, as read by a self-reading pocket dosimeter. The licensee's investigation into this event is ongoing and will be reviewed further by the California Department of Public Health.</br>California 5010 Number: 070820lic Health.
California 5010 Number: 070820 +
07:00:00, 7 July 2020 +
54,861 +
23:49:00, 26 August 2020 +
07:00:00, 7 July 2020 +
The following information was received via … The following information was received via E-mail:</br>The Radiation Safety Officer with Mistras Group, Inc. contacted the Radiologic Health Branch regarding an incident with an Ir-192 radiography source that was determined to be locked out of its exposure device. The source was an Industrial Nuclear Model 32 Ir-192 source, Serial Number 550F, with an activity of 63.4 Curies. The device was an Industrial Nuclear Ir-100, Serial Number 4358. The incident occurred during radiography operations at a refinery in El Segundo.</br>After a routine exposure, the radiographer retracted the source. The radiographer then proceeded with the radiation survey that showed a dose rate of 80 mR/hr approximately 2 feet from the exposure device, indicating that the source was not in the locked and shielded position. The radiographer contacted the RSO who instructed them to readjust the restricted area boundary to maintain 2 mR/hr dose rate.</br>After the RSO arrived at the site, they placed shielding to reduce the dose rate while performing retrieval and returning the source to the locked and secured position. The device was then red tagged and placed out of service until it could be evaluated by the manufacturer. The highest dose received by Mistras Personnel (RSO) was 20 mrem, as read by a self-reading pocket dosimeter. The licensee's investigation into this event is ongoing and will be reviewed further by the California Department of Public Health.</br>California 5010 Number: 070820lic Health.
California 5010 Number: 070820 +
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, 27 August 2020 +
4832-19 +
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>.
16:22:00, 15 January 2021 +
23:49:00, 26 August 2020 +
50.701 d (1,216.82 hours, 7.243 weeks, 1.667 months) +
07:00:00, 7 July 2020 +
<td align="Left" scope="Row">Agreement State Report - Radiography Camera Source Retraction Failure +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.