Semantic search
Jump to navigation
Jump to search
| Entered date | Event description | |
|---|---|---|
| ENS 52215 | 1 September 2016 13:11:00 | At 1122 (EDT), the RSO (Radiation Safety Officer) for Integrity Testlabs (ITL), LLC, received a telephone notification from the field radiographer at the client's location that he was unable to retract the source fully into the shielded position. The radiographer attempted to retract the source twice. The radiographer realized the source was not going to get shielded because he noticed that the control cable housing was laying on equipment which was later determined to be approximately 500 degrees F. This melted the control cable housing and in turn prevented the complete retraction of the source into the shielded position. The radiographer kept the source to the fully exposed position within the 4HVL collimator and proceeded to extended the posted radiation area boundaries to 2mR/hr or less, then contacted the RSO at 1122 (EDT). The RSO was approximately 50 miles away and stated he was on his way to assist in the recovery process. The company and RSO are authorized to perform recovery of sources. The radiographer then contacted his supervisor, who was the senior radiographer onsite. The supervisor also attempted to retract the source into the shielded position. The supervisor contacted the RSO and explained the situation. By direction from the RSO via telephone communication, the supervisor was able to disconnect the control housing at the remote control crank and pull the control cable so that the source was retracted into the shielded position. The radiography operations were terminated for the day. Surveys were performed after the source was shielded with no unusual readings. All equipment was returned to ITL's facility. The following self-reading pocket dosimeter readings were recorded at the conclusion of this event. The radiographer and assistant radiographer had performed 6 exposures for the day. The 6 exposures included the event. Radiographer 100mR Assistant 20mR Supervisor 23mR during the recovery process No radiographic personnel or member of the pubic was overexposed during the entire event. The affected equipment will be inspected, repaired or replaced, as needed. A follow report will be submitted to Region I as soon as practical. Equipment: QSA Global Model 880s #S1667 w/ IR-192 #32053G - 56.5Curies 25Ft Extreme Control Cables with two extreme guide tubes, each guide tube 7ft long and the outer most guide stop having a source stop. One - 4HVL Tungsten collimator |
| ENS 47197 | 25 August 2011 11:50:00 | At 0917 EDT on 8/25/11, Integrity Testlab received a facsimile notification from Integrity Testlab's dosimeter processor, Landauer, that an assistant radiographer's July 2011 dosimeter had received/recorded 9.587 R. According to the assistant radiographer, his dosimeter had come off his work clothes during radiographic operations on 7/29/11. When he discovered that his film badge was not on his work clothes, he looked for and found the dosimeter near the exposure device. He believes that his dosimeter had 4 or 5 exposures during the time the dosimeter was near the exposure device. The exposure time for each exposure was about 40 seconds in length. On 8/2/11, the assistant radiographer informed the RSO what had occurred on 7/29/11. The RSO instructed the assistant to complete a statement on what transpired on that date. The RSO verified the assistant's statement with the radiographer. The RSO verbally instructed the assistant how to best secure the dosimeter on the rate alarm meter pouch and to periodically check that all required dosimetry remains on his person during radiographic operations. The RSO reviewed all daily pocket dosimeter readings recorded for the month of July. He determined that the assistant had performed radiography for a total of 9 days in July. The RSO also noticed that he had performed radiography with the same radiographer 8 of those 9 days. The radiographer's pocket dosimeter reading recorded 200 mR, while his assistant's daily readings totaled 201 Mr. The RSO contacted Landauer in order to get the radiographer's July recorded dosimeter results and Landauer verbally informed the RSO that the total was 87mR for the month of July for the radiographer. After reviewing all documentation, the RSO believes that the assistant's dosimeter was accidently exposed to excessive radiation and that this was not an actual overexposure. Furthermore, the RSO intends to inform all personnel involved in Integrity Testlab's Radiation Safety Program about this event and to instruct the personnel on the importance of securing their dosimetry on their person. An 880 Sigma device was involved during this occurrence and it had contained Ir -192, 55.5 Ci. |