Event Notification Report for April 13, 2018

TEXAS AGREEMENT STATE REPORT - ATTEMPTED BREAK-IN AT A FACILITY HOUSING RADIOGRAPHY EQUIPMENT

The following information was obtained from the state of Texas via email:

"On April 13, 2018, the Agency [Texas Department of State Health Services] received notification from a radiation safety officer (RSO) for a radiography company. The RSO stated that they experienced an attempted theft at one of their locations. The workday ended at 6:00 p.m. [CDT] yesterday and began at 6:00 a.m. today. At some point during the night hours, the lock on the complex gate was forced to the point of breakage. The complex is surrounded by a six foot fence and contains radiography vehicles, an office, and a radiography storage vault. The attempt to enter the complex was not successful. The company found the bent/broken lock and noted no items disturbed or stolen. The company informed the local law enforcement servicing the area. The company also increased its video surveillance by adding more cameras and signs communicating the area was under surveillance to deter any future attempts of criminal activity."

Texas Incident #9560

TEXAS AGREEMENT STATE REPORT - RECOVERY BY U.S. CUSTOMS AND BORDER PROTECTION OF A FIXED NUCLEAR GAUGE

The following information was obtained by the state of Texas via email:

"On April 13, 2018, at approximately 8:55 p.m. [CDT], U.S. Customs and Border Protection (CBP) notified the Agency [Texas Department of State Health Services] that it had discovered and identified a cesium [fixed] gauge - Thermo Fisher Scientific Model 5192, containing 200 milliCuries of cesium-137, SN: B8087 - in the bed of a pickup truck of an individual (road construction worker) who was crossing from Texas into Mexico at the Tornillo-Marcelino Serna port of entry in Tornillo, Texas. The individual told the CBP officer that he had found the gauge on the side of the road near Kermit, Texas, and had picked it up and put it in the back of his truck as he was leaving that area to travel to Mexico ('home'); he collects scrap metal and sells it across the border. CBP took possession of the device and the Agency contacted the owner/licensee. The licensee dispatched an employee who retrieved the device at approximately 6:00 a.m. on April 14, 2018. The licensee reported that the device packaging appeared to be secure and has performed a leak test which was sent to a third party for analysis. While there has been no indication that any individual has been exposed above any regulatory limit, the licensee's and Agency's investigations thus far have not been able to definitively make that determination. Therefore, this report is being submitted. More information will be provided as it is obtained in accordance with SA-300."

Texas Incident #I-9561

VALID EMERGENCY DIESEL GENERATOR START DURING TESTING

"At 1555 EDT, the Unit 2 'CD' Emergency Diesel Generator (EDG) automatically started and loaded to 4kV Safeguards bus T21C. Testing was in-progress and the start was unplanned. Unit 2 is currently defueled. Unit 1 remains stable at 100 percent power.

"The South Spent Fuel Pit Cooling Train lost power due to a load shed. The South Spent Fuel Pit Cooling Pump was restarted on 2 'CD' EDG at 1614 EDT. The North Spent Fuel Pit Cooling Train remained in-service the entire time. There was no observable change in Spent Fuel Pool temperature.

"This event is reportable under 10 CFR 50.72(b)(3)(iv)(A), specified system actuation of an emergency diesel generator, as an eight (8) hour report."

The NRC Resident Inspector has been notified.

MANUAL REACTOR TRIP FOLLOWING MAIN FEEDWATER CONTROL PROBLEM

"On 4/13/2018 at 0227 [EDT], the Oconee Unit 1 Reactor was manually tripped from 24 percent power due to the inability to control main feedwater flow through the Main Feedwater Control Valves using the Integrated Control System. Due to the RPS actuation while critical, this event is being reported as a 4-hour Non-Emergency per 10 CFR 50.72(b)(2)(iv)(B).

"Following the reactor trip, multiple Main Steam Relief Valves failed to reseat at the expected pressure. Using procedure guidance, Main Steam Pressure was lowered by 115 psig, resulting in the closing of all Main Steam Relief Valves. All other post-trip conditions are normal and all other systems performed as expected. Unit 1 is currently in Mode 3 and stable."

Decay heat is being removed by the steam generators discharging steam to the main condenser using the turbine bypass valves. Units 2 and 3 are not affected by the Unit 1 reactor trip.

The licensee notified the NRC Resident Inspector.

TWO CRACKS IDENTIFIED AT THE FEED WATER LINE 'B' CONTAINMENT CONCRETE PENETRATION

"At 1208 CDT on April 13, 2018, GGNS [Grand Gulf Nuclear Station] identified cracks in the primary containment concrete penetration [outer wall] around feed water line 'B'. There are no available dimensions for crack width or depth until further inspections are performed.

"In accordance with NUREG 1022, Event Reporting Guidelines 10 CFR 50.72 and 10 CFR 50.73, Section 3.2.4, any event or condition that results in the condition of the nuclear power plant, including its principal safety barriers being seriously degraded, requires that when a principal safety barrier is declared inoperable the condition must be reported under 10 CFR 50.72 (b)(3)(ii)."

The licensee has notified the NRC Resident Inspector.

* * * RETRACTION FROM GERRY ELLIS TO HOWIE CROUCH AT 2012 EDT ON 4/15/18 * * *

"Grand Gulf Nuclear Station (GGNS) personnel performed an inspection of the wall around feed water line 'B'. This inspection included the protective coating in the identified area and a partial inspection of the underlying concrete. The inspection of the protective coating found a collection of non-linear anomalies, chipping, and flaking. The inspection found non-significant linear indications in the concrete.

"Grand Gulf Nuclear Station determined that the collection of non-significant coating imperfections and non-significant indications in the concrete do not constitute serious degradation of primary containment. The indications do not adversely impact the operability, mission time, or safety-function (as described per Technical Specification 3.6.1.1, Primary Containment) of the containment structure. The as-found conditions have been entered into the GGNS corrective action program for final disposition.

"The containment structure is operable, therefore, GGNS is retracting this event notification."

The licensee has notified the NRC Resident Inspector. Notified R4DO (Kellar).

FLORIDA AGREEMENT STATE REPORT - PATIENT RECEIVED 65 PERCENT OF PRESCRIBED DOSE TO INTENDED TREATMENT SITE

The following information was obtained from the state of Florida via email:

"An underdose of Y-90 Theraspheres to the patient's liver was reported to the BRC [Florida Bureau of Radiation Control] on 4/14/2018 at 3:15 p.m. [EDT]. Incident occurred on Friday, 4/13/2018 sometime during the afternoon. 60 mCi of Y-90 Theraspheres prescribed, of which 65% was delivered to patient's liver and 35% went to the waist. The RSO [Radiation Safety Officer] to follow up with documentation and a corrective action plan."

Florida Incident No.: FL18-050

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

TEXAS AGREEMENT STATE REPORT - OVEREXPOSURE TO A RADIOGRAPHER

The following information was obtained from the State of Texas via email:

"On April 13, 2018, the Agency [Texas Department of State Health Services] was notified by the Licensee's Radiation Safety Officer (RSO) that an overexposure occurred after a film badge that was sent off earlier this week for an immediate reading came back with a total whole body dose of 6 Rem. On or about April 9, 2018, a radiographer working at a fabrication shop was using a QSA 880D [camera] containing 70 Curies of Iridium-192. After the camera was used to conduct some shots at one location, the radiographer carried the camera and attached cables to a different location. When he walked by a Radiographer Supervisor, the Supervisor's rate alarm starting alarming. The camera was put down, the cranks operated and the source was then fully locked inside the camera. Details of why the source was not fully inserted in the camera are not known at this time. The RSO is enroute to conduct an investigation and interviews on April 16, 2018. The camera and cranks were tested several times and appear to be working normally. No other personnel appeared to receive any significant dose. Additional information will be supplied as it is received in accordance with SA-300."

Texas Incident Number: 9559


* * * UPDATE ON 4/18/18 AT 0940 EDT FROM KAREN BLANCHARD TO BETHANY CECERE * * *

The update was obtained from the State of Texas via email:

"Per new information received from the licensee, please change the activity of the source from 70 Curies to 102.8 Curies.

"Investigation into this event is still ongoing."

Notified R4DO (O'Keefe) and NMSS Events Notification (email).