Event Notification Report for August 23, 2019

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
8/22/2019 - 8/23/2019

** EVENT NUMBERS **

Fuel Cycle Facility	Event Number: 54218
Facility: NUCLEAR FUEL SERVICES INC. RX Type: URANIUM FUEL FABRICATION Comments: HEU CONVERSION & SCRAP RECOVERY NAVAL REACTOR FUEL CYCLE LEU SCRAP RECOVERY Region: 2 City: ERWIN State: TN County: UNICOI License #: SNM-124 Docket: 07000143 NRC Notified By: RON RICE HQ OPS Officer: KERBY SCALES	Notification Date: 08/14/2019 Notification Time: 10:07 [ET] Event Date: 08/13/2019 Event Time: 16:00 [EDT] Last Update Date: 08/14/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 70.50(b)(2) - SAFETY EQUIPMENT FAILURE	Person (Organization): ERIC MICHEL (R2DO) NMSS_EVENTS_NOTIFICATION (EMAIL) - FUELS GROUP (EMAIL)

Event Text

CRITICALITY ACCIDENT ALARM SYSTEM SPEAKER FAILURE

"At approximately 1320 [EDT] one speaker in the Low Enriched Uranium (LEU) area was identified as not operating when a series of Public Address (PA) announcements were made. Strobe lights, however, were functioning in the area. At 1430 compensatory measures were established to limit access in the affected area to only those personnel with radio communication with the alarm room. At 1600 the system was tested and it was confirmed that the Criticality Accident Alarm System (CAAS) was not audible in the LEU area. No other areas were effected. On August 13, 2019 at approximately 1726, full compliance was restored when the speaker was replaced and satisfactorily retested. The most recent audibility test of this area had been satisfactorily performed on August 6, 2019 at approximately 1100. The licensee notified the NRC Resident Inspector on August 13, 2019 at approximately 1653."

Agreement State	Event Number: 54221
Rep Org: NORTH DAKOTA DEPARTMENT OF HEALTH Licensee: BRAUN INTERTEC CORP Region: 4 City: MANDAN State: ND County: License #: 33-44929-01 Agreement: Y Docket: NRC Notified By: DAVID STRADINGER HQ OPS Officer: OSSY FONT	Notification Date: 08/15/2019 Notification Time: 11:59 [ET] Event Date: 08/14/2019 Event Time: 16:30 [MDT] Last Update Date: 08/15/2019
Emergency Class: NON EMERGENCY 10 CFR Section: AGREEMENT STATE	Person (Organization): RAY KELLAR (R4DO) NMSS_EVENTS_NOTIFICATION (EMAIL)

Event Text

AGREEMENT STATE REPORT - ACCIDENT DURING SOURCE TRANSPORT

The following was received from the North Dakota Department of Health via phone:

A vehicle transporting a 300 mCi Cs-137 (Eckert & Ziegler Model Cs7.P03, SN CZ110) well logging source overturned when returning from a coal mine back to the storage facility. The source remained in the travel case in the vehicle. There was no fire nor injuries. The radiation safety officer arrived approximately 40 minutes after the incident and surveyed the case. No additional radiation above background was detected. The source was transported to Bismarck and a leak test performed. They are still awaiting the results.

Power Reactor	Event Number: 54234
Facility: DIABLO CANYON Region: 4 State: CA Unit: [] [2] [] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: DAVID N. MADSEN HQ OPS Officer: BRIAN P. SMITH	Notification Date: 08/22/2019 Notification Time: 12:49 [ET] Event Date: 06/27/2019 Event Time: 01:30 [PDT] Last Update Date: 08/22/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION	Person (Organization): CALE YOUNG (R4DO)

Unit

SCRAM Code

RX Crit

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

100

Power Operation

100

Power Operation

Event Text

AUTOMATIC TRANSFER OF 4-kV VITAL BUS FROM AUXILIARY TO STARTUP POWER

"This 60-day telephone notification is being made in accordance with 10 CFR 50.73(a)(1) and 10 CFR 50.73(a)(2)(iv)(A) regarding an invalid Engineered Safety Feature actuation signal.

"On June 27, 2019, at 0130 hours Pacific Daylight Time (PDT), with Unit 2 operating at 100 percent power, the U2 4-kV Vital Bus F was automatically transferred from its auxiliary power to its startup power due to an invalid loss of bus voltage signal. The cause of the invalid signal was due to a test jumper that was inadvertently left in place during surveillance testing. As a result, one auxiliary saltwater pump started and two containment fan cooler units started in slow speed.

"At 1245 PDT, Vital Bus F was transferred back from startup power to auxiliary power which is the normal plant operating configuration.

"This event was entered into the Diablo Canyon Power Plant corrective action program for resolution. This event did not result in any adverse impact on the health and safety of the public. The plant responded as expected.

"In accordance with 10 CFR 50.73(a)(1), a telephone notification is being made in lieu of submitting a written Licensee Event Report.

"The licensee has notified the NRC Senior Resident Inspector."

Part 21	Event Number: 54236
Rep Org: ENGINE SYSTEMS, INC Licensee: ENGINE SYSTEMS, INC Region: 1 City: ROCKY MOUNT State: NC County: License #: Agreement: Y Docket: NRC Notified By: DAN ROBERTS HQ OPS Officer: CATY NOLAN	Notification Date: 08/22/2019 Notification Time: 16:41 [ET] Event Date: 08/22/2019 Event Time: 00:00 [EDT] Last Update Date: 08/22/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 21.21(d)(3)(i) - DEFECTS AND NONCOMPLIANCE	Person (Organization): DAVE WERKHEISER (R1DO) - PART 21/50.55 REACTORS (EMAIL)

Event Text

PART 21 - CRACKED SPRAY TIP ON EMD FUEL INJECTOR

The following is a summary of information received from Engine Systems, INC (ESI) via facsimile:

The basic component, a fuel injector, P/N 5229250, S/N R2200, was sent to ESI for failure analysis and the spray tip was found to have a through wall crack. Inspections determined the fuel feed holes in the body of the spray tip were incorrectly drilled, resulting in one of the holes not properly penetrating the reservoir. A cracked spray tip would inhibit proper combustion of fuel within the corresponding power cylinder which could affect the carrying capability of the diesel engine. This could impact the operability of the diesel engine, thereby, preventing the emergency diesel generator set from performing its safety-related function.

It is the belief of ESI that the extent of condition is limited to the single spray tip. Based on the age of the tip (repair kit purchase order (PO) date is 2001), if other tips contained the same discrepancy, it is highly likely they would have been detected or replaced.

There were 20 tips in the same batch as the failed spray tip. The end user of the PO is Nine Mile Point. ESI suggests that the customer perform an inspection on the remaining 19 injectors. ESI has discontinued the affected injector repair kit.

Power Reactor	Event Number: 54237
Facility: HATCH Region: 2 State: GA Unit: [] [2] [] RX Type: [1] GE-4,[2] GE-4 NRC Notified By: RUSSELL LEWIS HQ OPS Officer: OSSY FONT	Notification Date: 08/23/2019 Notification Time: 00:33 [ET] Event Date: 08/22/2019 Event Time: 22:34 [EDT] Last Update Date: 08/23/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION	Person (Organization): RANDY MUSSER (R2DO)

Unit

SCRAM Code

RX Crit

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

100

Power Operation

100

Power Operation

Event Text

HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM INOPERABLE

"At 2234 [EDT], on 08/22/2019, while Unit [2] was at approximately 100 percent power in MODE 1, it was discovered that Unit 2 HPCI was INOPERABLE. HPCI does not have a redundant system; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v).

"There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."

Initial evaluation is that it is a power supply issue. The system had no indications, followed by smoke from behind the circuitry, and then indications returning. This is associated with a 14-day Limiting Condition for Operation.

Page Last Reviewed/Updated Wednesday, March 24, 2021