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Event Notification Report for April 18, 2017

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
04/17/2017 - 04/18/2017

** EVENT NUMBERS **


52671 52683 52685

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Agreement State Event Number: 52671
Rep Org: TEXAS DEPT OF STATE HEALTH SERVICES
Licensee: DESERT NDT LLC
Region: 4
City: ABILENE State: TX
County:
License #: L-06462
Agreement: Y
Docket:
NRC Notified By: ARTHUR TUCKER
HQ OPS Officer: JEFF ROTTON
Notification Date: 04/09/2017
Notification Time: 13:46 [ET]
Event Date: 04/08/2017
Event Time: [CDT]
Last Update Date: 04/09/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
MICHAEL VASQUEZ (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)

Event Text

AGREEMENT STATE REPORT - RADIOGRAPHY CAMERA SOURCE FAILS TO RETRACT PROPERLY

The following information was provided by the State of Texas via email:

"On April 9, 2017, the Agency [Texas Department of State Health Services] was notified by the licensee's Radiation Safety Officer (RSO) that on April 8, 2017, one of his crew was unable to retract a 95 curie iridium-192 source into a Spec 150 exposure device [at a work site 2 miles inside the Texas border near Jal, NM]. The RSO stated that after the first exposure for the day, the radiographers noted they could not lock the source inside the exposure device. The radiographers established a two millirem per hour boundary and evacuated two trailers that were inside the two millirem per hour barrier. The RSO stated the people were in the trailer for five minutes before the radiographers had them leave the area. The radiographers contacted the site RSO who responded to the scene. The site RSO found the guide tube had separated from the front of the exposure device. The site RSO was able to retract the source into the fully shielded position. The RSO stated they believe that sand had built up in the guide tube to camera connection which prevented the guide tube connector to fully seat in the connection. The RSO stated his initial calculations indicated no member of the general public exceeded any exposure limits. No licensee personnel exceeded any exposure limit from this event. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident #: I-9478

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Power Reactor Event Number: 52683
Facility: BRUNSWICK
Region: 2 State: NC
Unit: [1] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: LEE GRZECK
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 04/17/2017
Notification Time: 07:40 [ET]
Event Date: 04/17/2017
Event Time: 00:04 [EDT]
Last Update Date: 04/17/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
MARVIN SYKES (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
2 N Y 22 Power Operation 22 Power Operation

Event Text

AUTOMATIC ACTUATION OF EMERGENCY DIESEL GENERATORS

"On April 17, 2017, at 0004 Eastern Daylight Time (EDT), an automatic actuation of the four Emergency Diesel Generators (EDGs) was received. At the time of the event, Unit 2 was in the process of starting the main turbine following a refueling outage. Operations personnel tripped the main turbine due to elevated bearing vibrations. When the main turbine was tripped, Power Circuit Breakers (PCBs) 29A and 29B failed to open. This caused a main generator primary lockout due to generator reverse power and the subsequent automatic actuation of all four EDGs. All emergency buses remained energized from offsite power and therefore, the EDGs did not tie to their respective buses. The protective relaying and EDGs responded per design to this event. This event is being reported in accordance with 10 CFR 50.73(b)(3)(iv)(A) as an event that results in a valid actuation of the EDGs. Due to the shared configuration of the Brunswick electrical system, both Unit 1 and Unit 2 are affected.

"This event did not impact public health and safety. The NRC Resident lnspector has been notified."

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Power Reactor Event Number: 52685
Facility: HATCH
Region: 2 State: GA
Unit: [1] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: RODGER LOWER
HQ OPS Officer: HOWIE CROUCH
Notification Date: 04/17/2017
Notification Time: 13:35 [ET]
Event Date: 02/17/2017
Event Time: 10:21 [EST]
Last Update Date: 04/17/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
MARVIN SYKES (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
2 N N 0 Refueling 0 Refueling

Event Text

60-DAY OPTIONAL TELEPHONIC NOTIFICATION OF INVALID SPECIFIED SYSTEM ACTUATION

"On February 17, 2017 at 1021 EST, secondary containment isolated and Standby Gas Treatment (SBGT) systems started on Unit 1 and Unit 2 during a maintenance activity to replace a relay in the Unit 2 primary containment isolation system. The work was being conducted as part of planned maintenance during the Unit 2 refueling outage. Poor work instruction led to a jumper not being installed as required, thus causing relays to de-energize, resulting in an invalid actuation of the Unit 1 and Unit 2 outboard primary and secondary containment isolation valves and auto-start of the Unit 1 and Unit 2 SBGT system.

"This event is reportable per 10 CFR 50.73(a)(2)(iv)(A) since the containment isolation and auto-start of SBGT on both units was not part of a pre-planned sequence and the event resulted in the invalid actuation of general containment isolation valves in more than one system.

"All primary and secondary containment isolation valves and SBGT systems functioned successfully. The associated wires were re-landed and secondary containment was returned to normal service.

"The licensee notified the NRC Resident Inspector."

Page Last Reviewed/Updated Tuesday, April 18, 2017
Tuesday, April 18, 2017