Browse wiki
Jump to navigation
Jump to search
On July 1, 2012 at 11:45 pm, a radiography … On July 1, 2012 at 11:45 pm, a radiography crew using remote access technology at the Kuparuk Oil Field on the North Slope of Alaska had the jig, collimator and guide tube dislodge and fall while cranking out the source. With the added weight of the connected jig and collimator, the guide tube ended up hanging straight down 30 feet above a platform floor, creating a sharp bend where the guide tube connects to the camera. The crew was not able to retract the source immediately after the accident. Kakivik's onsite Radiation Safety Supervisor and the RSO were immediately notified. The 2 mr/hr boundary was re-surveyed and adjusted. Constant surveillance and control of the boundary was maintained. Per guidance from the Kakivik's emergency procedures and RSO, the exposure device was to be lowered by ropes onto a suitable working surface. During the camera decent, the guide tube came in contact with piping and was straightened sufficiently to allow the source to be safely cranked into the fully</br>shielded and secured position while still suspended from the ropes. The source was fully shielded within the exposure device by 2:13 am July 2nd. The operation to lower the camera to straighten the guide tube and crank in the source to the fully shielded position took approximately one minute. No exposure to the public or overexposure to Kakivik employees or unauthorized entry into the restricted area was made. All the radiographic equipment was inspected after the accident. The ball connector at the end of the crank drive cable was bent and was replaced. The outside of the guide tube was damaged and taken out of service. The camera including the source pigtail connector was not damaged and was returned to service.</br>After investigation, the cause of the incident was determined to be the improper use of a magnetic jig that was attached to a surface that did not have sufficient force to hold the combined weight of jig, collimator, guide tube and source. </br>The corrective actions taken to prevent recurrence included writing a company policy that clearly states that a radiographer may not use magnetic jigs to support the guide tube and collimator unless it is also supported with ratchet straps or a chain wrench or unless the magnetic jig is being used on a flat steel floor surface. This policy will be required to be read and adhered to by all current and new radiographers. This incident will be reviewed with all the Kakivik radiographers and assistants by the RSO or RSS.</br>There were no injuries as a result of this event and there were no overexposures to members of the public or employees.res to members of the public or employees.
07:45:00, 2 July 2012 +
48,119 +
17:18:00, 19 July 2012 +
07:45:00, 2 July 2012 +
On July 1, 2012 at 11:45 pm, a radiography … On July 1, 2012 at 11:45 pm, a radiography crew using remote access technology at the Kuparuk Oil Field on the North Slope of Alaska had the jig, collimator and guide tube dislodge and fall while cranking out the source. With the added weight of the connected jig and collimator, the guide tube ended up hanging straight down 30 feet above a platform floor, creating a sharp bend where the guide tube connects to the camera. The crew was not able to retract the source immediately after the accident. Kakivik's onsite Radiation Safety Supervisor and the RSO were immediately notified. The 2 mr/hr boundary was re-surveyed and adjusted. Constant surveillance and control of the boundary was maintained. Per guidance from the Kakivik's emergency procedures and RSO, the exposure device was to be lowered by ropes onto a suitable working surface. During the camera decent, the guide tube came in contact with piping and was straightened sufficiently to allow the source to be safely cranked into the fully</br>shielded and secured position while still suspended from the ropes. The source was fully shielded within the exposure device by 2:13 am July 2nd. The operation to lower the camera to straighten the guide tube and crank in the source to the fully shielded position took approximately one minute. No exposure to the public or overexposure to Kakivik employees or unauthorized entry into the restricted area was made. All the radiographic equipment was inspected after the accident. The ball connector at the end of the crank drive cable was bent and was replaced. The outside of the guide tube was damaged and taken out of service. The camera including the source pigtail connector was not damaged and was returned to service.</br>After investigation, the cause of the incident was determined to be the improper use of a magnetic jig that was attached to a surface that did not have sufficient force to hold the combined weight of jig, collimator, guide tube and source. </br>The corrective actions taken to prevent recurrence included writing a company policy that clearly states that a radiographer may not use magnetic jigs to support the guide tube and collimator unless it is also supported with ratchet straps or a chain wrench or unless the magnetic jig is being used on a flat steel floor surface. This policy will be required to be read and adhered to by all current and new radiographers. This incident will be reviewed with all the Kakivik radiographers and assistants by the RSO or RSS.</br>There were no injuries as a result of this event and there were no overexposures to members of the public or employees.res to members of the public or employees.
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, 19 July 2012 +
50-27667-01 +
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>.
05:42:28, 24 February 2020 +
17:18:00, 19 July 2012 +
17.398 d (417.55 hours, 2.485 weeks, 0.572 months) +
07:45:00, 2 July 2012 +
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.