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Event Notification Report for March 6, 2018

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
03/05/2018 - 03/06/2018

** EVENT NUMBERS **


53244 53246

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Non-Power Reactor Event Number: 53244
Facility: UNIV OF MISSOURI-COLUMBIA
RX Type: 10000 KW TANK
Comments:
Region: 0
City: COLUMBIA State: MO
County: BOONE
License #: R-103
Agreement: N
Docket: 05000186
NRC Notified By: BRUCE MEFFERT
HQ OPS Officer: STEVEN VITTO
Notification Date: 03/05/2018
Notification Time: 13:14 [ET]
Event Date: 03/04/2018
Event Time: 03:08 [CST]
Last Update Date: 03/05/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
NON-POWER REACTOR EVENT
Person (Organization):
GEOFFREY WERTZ (NRR)
ELIZABETH REED (NRR)

Event Text

TECHNICAL SPECIFICATION DEVIATION

"On 3/4/18 at 0308 CST, the MURR [University of Missouri Research Reactor] emergency power generator was switched out of automatic control for approximately 10 to 15 seconds while the reactor was operating due to human error. With the emergency power generator in manual control, the emergency electrical power system is considered inoperable because the emergency electrical power system would not have supplied power in the event of a loss of normal electrical power.

"This email is a required notification per MURR Technical Specification (TS) 6.6.c.(1) to report to the NRC Operations Center that an Abnormal Occurrence as defined by MURR TS 1.1 happened. Specifically, MURR was not in compliance with the Limiting Condition for Operation TS 3.6.a which states, 'The reactor shall not be operated unless the emergency electrical power system is operable.' When the emergency power generator was switched out of automatic control, a Control Room alarm notified the Console Operator. Another operator placed the emergency power generator back into automatic mode which was the quickest way to regain compliance with TS 3.6.a. The MURR continued to operate at 10 MW. A detailed event report will follow within 14 days as required by MURR TS 6.6.c.(3)."

The licensee notified the NRC Research and Test Reactor Project Manager (Wertz).

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Part 21 Event Number: 53246
Rep Org: CRANE NUCLEAR, INC.
Licensee: CRANE NUCLEAR, INC.
Region: 3
City: BOLINGBROOK State: IL
County:
License #:
Agreement: Y
Docket:
NRC Notified By: JOYCE HAMMAN
HQ OPS Officer: HOWIE CROUCH
Notification Date: 03/06/2018
Notification Time: 18:33 [ET]
Event Date: 12/17/2017
Event Time: [CST]
Last Update Date: 03/06/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21(d)(3)(i) - DEFECTS AND NONCOMPLIANCE
Person (Organization):
DAN SCHROEDER (R1DO)
RANDY MUSSER (R2DO)
MICHAEL VASQUEZ (R4DO)
PART 21/50.55 REACTO (EMAI)

Event Text

PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES

On 12/17/17, Brunswick Nuclear Plant experienced a packing gland blowout on an in-service Crane Nuclear, Inc., Figure Number 83 1/2 SPL, 10 inch by 8 inch by 10 inch, Bolted Bonnet Gate Valve. Crane Nuclear determined that component drawings for the 10 inch valve as well as the 6 inch by 4 inch by 6 inch Bolted Bonnet Gate Valve were in error. That error was corrected. Crane Nuclear is recommending that affected licensees replace the packing glands of the affected valves in their possession.

The affected licensees are Pilgrim Station, Cooper Nuclear Station, Browns Ferry Nuclear, and Brunswick Nuclear.

Should you have any questions regarding this matter, please contact Joyce Hamman, Director, Safety & Quality at (678) 451-2280, Burt Anderson, Site Leader, at (630) 226-4990, or Samson Kay, Engineering Manager at (630) 226-4983.

Page Last Reviewed/Updated Wednesday, March 07, 2018
Wednesday, March 07, 2018