Event Notification Report for April 13, 2016

UNANALYZED CONDITION

"At approximately 1430 hours EDT on 4/13/2016, it was determined that the source document for the mass and energy release parameters used to determine the containment pressure and temperature response to a Main Steam Line Break (MSLB) does not adequately account for all possible single active failure scenarios in the steam or feedwater line isolation provisions. The source document addresses the active failure of the Main Feedwater Control valves to close in the faulted steam generator feed line, but not the failure of a feedwater bypass valves to close in the faulted steam generator feed line. An active failure of a feedwater regulating bypass valve whereby the valve fails to close will increase the secondary mass available for release to the containment structure. This can result in a higher peak containment pressure that could challenge the containment design pressure. This condition is only a concern when the feedwater regulating bypass valves are in the open position in modes 1, 2 or 3, and they fail to close on a engineered safeguards actuation signal. The feedwater regulating bypass valves are currently closed.

"This determination is being reported as an unanalyzed condition in accordance with 10 CFR 50.72(b)(3)(ii)(B).

"The NRC Resident Inspector has been notified."

AGREEMENT STATE REPORT - RADIOGRAPHY CAMERA FELL OFF TRUCK AND LATER RECOVERED

"On April 13, 2016, the licensee reported to the Agency [Texas Department of State Health] that a radiography crew had failed to secure a QSA 880 Delta industrial radiography camera (SN: D9092), which contained a 98.7 Curie Iridium-192 source (SN: 30367G), inside their truck before leaving their facility to go to a temporary job site. The crew left the facility with the camera on the tailgate of their truck. A member of the public saw the camera in the street at an intersection approximately 100 yards from the facility. He knew what the camera was and that the licensee had a facility there. He moved the camera out of the street and into the ditch and called the licensee. The licensee responded immediately. The licensee inspected the camera and found no damage. They surveyed and confirmed the source was still in the fully shielded position. The licensee's radiation safety officer reported initial estimate is that the camera was out of their possession approximately 5 minutes and no one received any exposure above regulatory limits. The licensee will complete its investigation of the incident and will confirm or correct this initial information. Since the licensee has not yet submitted a dose assessment for the member of the public, we are making this report. More information will be provided as it is obtained in accordance with SA-300."

Texas Incident: #I 9388

AGREEMENT STATE REPORT - MEDICAL UNDERDOSE

The following report was received via e-mail:

"On April 15, 2016, at approximately 1930 [MST], the [Arizona Radiation Regulatory] Agency received notification from the licensee of a possible medical event involving Sir-Spheres (Yttrium-90) that occurred on April 13, 2016. The prescribed dose was 0.95 GBq and the administered dose was 0.74 GBq, which is 77.8 percent of the prescribed dose. The [Arizona Radiation Regulatory] Agency has requested additional information and continues to investigate the event.

"The U.S. NRC and Governor's office are being notified of this event."

First Notice: 16-005

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.