Event Notification Report for May 15, 2017

AGREEMENT STATE - SOURCE UNABLE TO BE RETRIEVED INTO SHIELDED DEVICE

The following report was received from the Louisiana Department of Environmental Quality via email:

"[On] 05/15/2017, [at] 11:50 [CDT], the Radiation Safety Officer of Team Industrial Services, Inc. called the Radiation Section of LDEQ [Louisiana Department of Environmental Quality] to report a source retrieval that occurred on 05/14/2017 [at approximately] 18:00 [CDT] at the INDORAMA VENTURES OLEFINS Refinery is Sulphur, LA at 4300 Hwy 108, Westlake, LA 70669. The camera was being used on a gridded walkway to radiograph some construction material situated on a tripod. The tripod became unstable causing the material to fall and crimp the guide tube. The source was in the collimator and was unable to be retrieved into the shielded exposure device. A retrieval crew was assembled and they were able to retrieve the source and return it to the shielded position. Two radiographers and a site RSO [Radiation Safety Officer] conducted the retrieval activities. The retrieval process was safely completed at [approximately] 20:30 [CDT] on 05/14/2017.

"A radiography exposure device was a QSA Global Model 880D, S/N D12919 and the source was an AEA Technology Model A424-9. The exposure device was loaded with 85.7 Ci of Ir-192. The guide tube was a 7 ft. tube that utilized a collimator. The exposure device and source were returned to the office for storage until being evaluated. The crimped guide tube was tested for leakage and then sent for disposal. The area was restricted to the public and controlled for the employees of Indorama. The exposures to the retrievers were minimal."

LA Event Report ID No.: LA170008

VALID EMERGENCY DIESEL GENERATOR SIGNAL GENERATED UPON LOSS OF 4160V POWER

"On May 15, 2017 at 1800 hours EDT, the '2A3' 4.16 KV safety related bus unexpectedly de-energized. The '2A' emergency diesel generator (EDG) system received a valid start signal from the undervoltage condition on the '2A3' bus but did not start as the EDG had been removed from service for maintenance. Loss of the '2A3' 4.16 KV bus resulted in a valid actuation of the undervoltage protection relays. The direct cause of the de-energization was determined to be failed secondary side potential transformer fuses. The 'B' train safety related electrical busses were unaffected by the event.

"The '2A3' 4.16 KV bus was reenergized at 2340.

"This event was determined to be reportable pursuant to 10CFR50.72(b)(3)(iv)(A)."

During the electrical transient, the licensee briefly entered Technical Specification 3.0.3 but plant conditions were restored, all required LCOs were satisfied, and Technical Specification 3.0.3 was exited before the plant was required to downpower.

The licensee notified the NRC Resident Inspector.

HIGH PRESSURE COOLANT INJECTION SYSTEM DECLARED INOPERABLE

"On May 15, 2017 at 1918 hours [CDT], Unit Two High Pressure Coolant Injection (HPCI) Minimum Flow Valve MO 2-2301-14 failed to open as required by procedure and HPCI was declared inoperable. When the HPCI Turbine was tripped, the Minimum Flow Valve did not open when system flow reduced to the low flow setpoint. This event is being reported as a condition that could have prevented fulfillment of a safety function in accordance with 10CFR50.72(b)(3)(v)(D). The HPCI system is a single train system and the loss of HPCI could impact the plant's ability to mitigate the consequences of an accident. In accordance with Technical Specification 3.5.1 Condition G, the Reactor Core Isolation Cooling (RCIC) system was confirmed operable."

This places the plant in a 14-day LCO action statement.

The licensee has notified the NRC Resident Inspector.

AGREEMENT STATE REPORT - POTENTIAL EXCESSIVE EXPOSURE OF RADIOGRAPHER

The following information was received from the Wisconsin Radiation Protection Section via email:

"On May 15, 2017, radiographers with Acuren Inspection, Inc. were performing radiography on a boiler at Verso Paper in Wisconsin Rapids, WI. They were utilizing an approximately 90 Ci Se-75 source, with a 17.5 HVL [Half Value Layer] collimator to perform shots through the boiler wall. The assistant radiographer would position a panel on the inside of the boiler wall and then move to the far side of the boiler. The main radiographer would then position the collimator for multiple shots from the outside of the boiler. They were in contact via radio. At approximately 7:45 p.m., following a shot, the main radiographer approached the collimator with his survey meter. As he approached, he realized the source had not yet been cranked in, and began walking back to crank it in. At that time, he was contacted via radio by the asst. radiographer. Setting down his survey meter, he had a 30-40 second conversation. Following the conversation, he forgot what he had been in the process of doing, and approached the collimator without his survey meter, and positioned it for the next shot. Turning to walk back, he spotted his survey meter on the ground halfway to the crank, remembered he had yet to crank it in, and realized he had been exposed. He was wearing a functioning alarming rate meter that did not alarm.

"Acuren notified the state approximately three hours after the event on the evening of the 15th of the possible overexposure. The radiographer initially estimated he had held the source 10 seconds, and Acuren calculated this would result in approximately a 680 Rad dose to the hands. The radiographer was wearing a direct reading dosimeter on his chest which read 100 mR. Other whole body dosimetry is being processed. Following the event, the licensee had the radiographer do a mock performance 3 times. These indicated he held the collimated source approximately 3-5 second in each hand. QSA global is currently performing an independent dose calculation and the radiographer has been removed from duty. The radiographer is not currently experiencing any symptoms of acute radiation exposure. The department has dispatched inspectors to perform a site inspection."

Wisconsin Event Report ID No.: WI-170007

* * * UPDATE ON 5/18/17 AT 1012 EDT FROM MEGAN SHOBER TO BETHANY CECERE * * *

The following update was received from the Wisconsin Radiation Protection Section via email:

"Wisconsin DHS [Department of Health Services] performed a site investigation on May 17, 2017. On the night of the event, there were approximately eight individuals supporting radiography at the temporary jobsite. Two individuals were performing radiography and the rest of the individuals were securing the boundaries. One radiographer was overexposed; no one else on the crew received an elevated dose due to the event. There was no exposure to members of the public. Inspectors confirmed that all radiography equipment (survey meters, alarming rate meters, etc.) was available and operational.

"The licensee determined that the radiographer held the collimator in his hands in a way that exposed his fingers to the uncollimated beam for several seconds on two separate occasions (once for each hand). The licensee contracted with a third-party to perform a dose assessment. The assessment shows a hand exposure of 176 rem per hand. DHS is evaluating these results.

"The radiographer's whole body badge was read by the dosimetry provider and showed a 152 millirem dose. This is consistent with the previously reported 100 mR direct-reading dosimeter exposure for May 15. Both the whole body badge and direct-reading dosimeter were located in the radiographer's left front shirt pocket.

"Wisconsin DHS is continuing to monitor the licensee's response, including medical follow-up of the affected individual."

Notified R3DO (Cameron), NMSS Events, NMSS (Rivera-Capella), and NSIR (Milligan) by email.

* * * UPDATE FROM MEGAN SHOBER TO VINCE KLCO ON 5/23/17 AT 1741 EDT * * *

The following information was received from the State of Wisconsin via facsimile:

" The source activity on the date of the incident was 96 curies."

Notified R3DO (Kunowski), NMSS Events, NMSS (Rivera-Capella), and NSIR (Milligan) by email.