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Event Notification Report for December 1, 2015

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
11/30/2015 - 12/01/2015

** EVENT NUMBERS **


51498 51555 51556

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!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor Event Number: 51498
Facility: PRAIRIE ISLAND
Region: 3 State: MN
Unit: [1] [2] [ ]
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: PAUL FINHOLM
HQ OPS Officer: JEFF HERRERA
Notification Date: 10/26/2015
Notification Time: 15:20 [ET]
Event Date: 10/26/2015
Event Time: 07:03 [CDT]
Last Update Date: 11/30/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Person (Organization):
ANN MARIE STONE (R3DO)

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

UNANALYZED CONDITION ASSOCIATED WITH A HIGH ENERGY LINE BREAK

"At 0703 CDT on 10/26/2015, Prairie Island Nuclear Generating Plant (PINGP) identified Door 62, '11/21 Auxiliary Feedwater Pump (AFW) Room to 12/22 AFW Pump Room' to be in a closed position. Door 62 functions as a fire door, and closes in the event of a fire in either A or B Train AFW Pump Rooms. When Unit 1 or Unit 2 is in modes 1-4, Door 62 is required to remain open in the event of an internal flood in AFW Pump Room or a Turbine Building High Energy Line Break (HELB) Flood into the AFW Pump. Currently, Unit 2 is in MODE 6, so only the Unit 1 Turbine Building HELB applies. Door 62 is normally open with a fusible link to allow closure during a fire.

"Door 62 was closed during maintenance. With the door closed the Unit 1 side of the Auxiliary Feedwater Pump Room lost its ability to adequately drain water in a Unit 1 HELB event and was in an unanalyzed condition. Upon discovery, Door 62 was immediately repositioned to be open per the analyzed condition and a fire watch established per plant procedure.

"This notification is being conducted in accordance with 10 CFR 50.72(b)(3)(ii)(B) for an unanalyzed condition.

"The plant remains safe, and this condition does not pose any additional risk to the public.

"The licensee has notified the NRC Resident Inspector."


* * * RETRACTION FROM NATHAN BIBUS TO DONALD NORWOOD AT 1703 EST ON 11/30/2015 * * *

"Prairie Island Nuclear Generating Plant is retracting this event notification, EN# 51498.

"Further analysis determined that the closure of Door 62 would not have prevented the structures, systems and components (SSC) located in the AFW Pump rooms, or SSCs powered from Motor Control Centers (MCCs) located in the AFW Pump rooms, from performing their safety functions. This is because the door closure would not have caused water level to rise above the maximum tolerable water height during any design basis flooding event. The acceptance criteria of the area flooding calculations were still met with Door 62 closed.

"Therefore, the Unit 1 side of the AFW Pump room did not lose its ability to adequately drain water in a Unit 1 HELB event, this event was not an 8-hour notification for an Unanalyzed Condition that significantly degrades plant safety, under 10CFR50.72(b)(3)(ii).

"The licensee has notified the NRC Resident Inspector."

Notified R3DO (Lipa).

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Agreement State Event Number: 51555
Rep Org: COLORADO DEPT OF HEALTH
Licensee: FORT COLLINS SOUTH SANITATION DISTRICT
Region: 4
City: FORT COLLINS State: CO
County:
License #: G/L
Agreement: Y
Docket:
NRC Notified By: LINDA D. BARTISH
HQ OPS Officer: HOWIE CROUCH
Notification Date: 11/20/2015
Notification Time: 11:19 [ET]
Event Date: 02/17/2014
Event Time: [MST]
Last Update Date: 11/20/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
GREG WARNICK (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)

This material event contains a "Less than Cat 3 " level of radioactive material.

Event Text

AGREEMENT STATE REPORT - LOST TRITIUM EXIT SIGN

The following information was received from the State of Colorado via email:

"Detail: After no response from initial mailing to Fort Collins South Sanitation District [from the Colorado Department of Public Health and Environment (CDPHE)] , a call was made to verify information from SRB Technologies quarterly report on 10-21-2015. The superintendent of the facility was unaware of the order for the exit signs and had not received the annual mailing from our office. He was emailed a copy of the manufactures report and annual forms to be completed and asked to verify if the exit signs had been installed at the location reported. The superintendent stated a project was being constructed during the time the signs were ordered however, he would have to contact the companies involved with the project. He contacted the local distributor, CED, 2405 W 15th Avenue, Denver, CO 80204. CED stated they delivered the signs to the electrical contractor on 2-7-14. The superintendent then contacted the electrical contractor Master Electrical Contractors Inc. [MECI] for further information. The superintendent emailed our [CDPHE] office on 11-18-15 regarding the tracking events for the exit signs and provided a report from MECI. The lost exit sign is model number BX-20-WH, serial number is C107403, with activity of 20 Ci of Tritium H-3 shipped from SRB Technologies on 1-24-14 for installation at 2560 East County Road 32, Fort Collins, CO 80528.

"Event description: During construction of the dewatering and headworks improvement project, one of the five tritium exit signs was lost. The signs were in the possession of Master Electrical Contractors at the site. It is not certain at what point during the project or what caused the one sign to be lost or where it ended up. Therefore, the General Contractors of the project, Filanc Construction and Master Electrical Contractors, shall be responsible for the lost sign."

Colorado Event Report ID No.: CO15-I15-32

THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

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Agreement State Event Number: 51556
Rep Org: ARIZONA RADIATION REGULATORY AGENCY
Licensee: PROTEX
Region: 4
City: TEMPE State: AZ
County:
License #: AZ 07-588
Agreement: Y
Docket:
NRC Notified By: AUBREY GODWIN
HQ OPS Officer: VINCE KLCO
Notification Date: 11/20/2015
Notification Time: 14:56 [ET]
Event Date: 11/20/2015
Event Time: 11:00 [MST]
Last Update Date: 11/20/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
GREG WARNICK (R4DO)
NMSS_EVENTS_NOTIFICA (EMAI)
ROBERT BUNCH (ILTA)
CNSNS (MEXICO) (FAX)

This material event contains a "Less than Cat 3 " level of radioactive material.

Event Text

AGREEMENT STATE REPORT - STOLEN MOISTURE-DENSITY GAUGE

The following information was received from the State of Arizona by facsimile:

"At approximately [0800 MST], November 20, 2015, the Agency [Arizona Radiation Regulatory Agency] was informed that the Licensee had a Campbell-Pacific Model MC-3, Serial Number MC310700331, portable moisture- density gauge stolen from a truck at an apartment parking lot. The theft occurred before [0500 MST], November 20, 2015. The gauge was the only thing stolen from the truck which had expensive tools in it. The sources were Cs-137, 10 millicuries and Am-241:Be, 50 millicuries.

"The Agency continues to investigate the event.

"The AZ Governor's Office, U.S. NRC, the States of CA, CO, NV, and NM are being notified of this event [by the Agency]."

Arizona First Notice: 15-025

THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

Page Last Reviewed/Updated Tuesday, December 01, 2015
Tuesday, December 01, 2015