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Event Notification Report for October 10, 2017

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
10/06/2017 - 10/10/2017

** EVENT NUMBERS **


53002 53003 53004 53005

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Part 21 Event Number: 53002
Rep Org: PARAGON ENERGY SOLUTIONS
Licensee: PARAGON ENERGY SOLUTIONS
Region: 1
City: OAK RIDGE State: TN
County:
License #:
Agreement: Y
Docket:
NRC Notified By: RAY CHALIFOUX
HQ OPS Officer: DONALD NORWOOD
Notification Date: 10/06/2017
Notification Time: 15:29 [ET]
Event Date: 10/06/2017
Event Time: [EDT]
Last Update Date: 10/06/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21(a)(2) - INTERIM EVAL OF DEVIATION
Person (Organization):
REBECCA NEASE (R2DO)
PART 21/50.55 REACTO (EMAI)

Event Text

PART 21 INTERIM REPORT - SWITCH WITH UNACCEPTABLE CHATTER

The following information is excerpted from a report received via email:

"Seismic qualification testing revealed contact block (CB) chatter greater than 2 milliseconds (msec) contrary to the acceptance requirements of the seismic test procedure developed for the activity. This switch has not been provided to the customer, however, a second suspect switch with a similar configuration and parts is installed in the customer's facility.

"The condition is isolated to when OT2A CBs are configured in an alternating Normally Open (NO) / Normally Closed or Normally Closed (NC) / Normally Open (NO) arrangement. The CBs do not exhibit chatter when 3 or less CBs are configured this way. The chatter is not exhibited when configured in a NO/NC, NO/NC, configuration. When the fourth CB is added to the switch assembly in an alternating configuration is when the contact chatter exceeds greater than 2 msec.

"Paragon Engineering has requested TVA Engineering to provide a reduced spectra specific to the installed location for further evaluation. Paragon Engineering has not been able to complete this activity within the 60-day period allowed under 10 CFR 21.

"One suspect switch has been provided to and installed at the customer's facility. The customer's facility is TVA - Watts Bar Unit 2."

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Power Reactor Event Number: 53003
Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [1] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STEVE KOCH
HQ OPS Officer: DONALD NORWOOD
Notification Date: 10/06/2017
Notification Time: 21:46 [ET]
Event Date: 10/06/2017
Event Time: 19:45 [EDT]
Last Update Date: 10/06/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
DON JACKSON (R1DO)

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 100 Power Operation 100 Power Operation

Event Text

LOSS OF CONTROL ROOM HABITABILITY ENVELOPE

"On October 6, 2017 at 1945 EDT, a loss of Control Room Habitability Envelope (CRE) was declared due to failing to meet the requirements of SR 3.7.3.4 during 72 month surveillance testing. Measured in-leakage exceeded the SR acceptance value.

"The CRE is required to be maintained such that occupants can control the reactor safely under normal conditions and maintain it in a safe condition following a radiological event, hazardous chemical release, or a smoke challenge. The station remains in compliance with Technical Specification required action statements.

"This event is being reported under 10 CFR 50.72(b)(3)(v)(D) and per the guidance of NUREG 1022, Rev. 3, Section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Control Room Habitability Envelope."

The licensee notified the NRC Resident Inspector.

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Power Reactor Event Number: 53004
Facility: POINT BEACH
Region: 3 State: WI
Unit: [1] [2] [ ]
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: DENNY SMITH
HQ OPS Officer: BETHANY CECERE
Notification Date: 10/09/2017
Notification Time: 09:15 [ET]
Event Date: 10/09/2017
Event Time: 07:37 [CDT]
Last Update Date: 10/09/2017
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
DAVID HILLS (R3DO)
CYNTHIA PEDERSON (R3 R)
BRIAN HOLIAN (NRR)
MICHAEL F. KING (NRR)
BERNARD STAPLETON (IRD)

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

Event Text

UNUSUAL EVENT DECLARATION FOR TOXIC GAS SPILL

At 0737 CDT on 10/9/17, Point Beach declared an Unusual Event with Emergency Action Level HU 3.1 due to report of toxic gas from a spill in a service building within the protected area. The spill is contained and cleanup operations are in progress. The spill was not in a contaminated area or vital area. The janitorial worker injured while mixing cleaning chemicals in a closet was taken to the hospital.

The licensee notified the NRC Resident Inspector.

Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).

* * * UPDATE ON 10/9/17 AT 1111 EDT FROM DENNY SMITH TO BETHANY CECERE * * *

"Point Beach has terminated the Unusual Event at 0944 [CDT] on 10/9/2017. The Unusual Event condition is no longer warranted.

"The NRC Resident Inspector has been notified."

Notified R3DO (Hills), NRR EO (King), IRD (Stapleton), DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).

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Power Reactor Event Number: 53005
Facility: MILLSTONE
Region: 1 State: CT
Unit: [ ] [ ] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: NORMAN KUZEL
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 10/09/2017
Notification Time: 14:23 [ET]
Event Date: 10/09/2017
Event Time: 14:05 [EDT]
Last Update Date: 10/09/2017
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
DON JACKSON (R1DO)
BERNARD STAPLETON (IRD)
DAVID LEW (R1 D)
BRIAN HOLIAN (NRR)
MICHAEL F. KING (NRR)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
3 N Y 100 Power Operation 100 Power Operation

Event Text

NOTIFICATION OF UNUSUAL EVENT - FLAMMABLE GAS IN THE TURBINE BUILDING

While troubleshooting a hydrogen differential pressure gauge, operators found a hydrogen concentration greater than the lower explosive limit (4% hydrogen concentration). The licensee evacuated the turbine building. The licensee is ventilating the area to allow personnel access to isolate and repair the leak. The plant Fire Brigade is on standby.

This event was declared for GU-2: release of toxic or flammable gas.

The main generator pressure and hydrogen concentration are stable.

The licensee notified the NRC Resident Inspector.

Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).

* * * UPDATE AT 1630 EDT ON 10/9/2017 FROM NORMAN KUZEL TO MARK ABRAMOVITZ * * *

The unusual event was terminated at 1617 EDT because the leak was isolated and the hydrogen concentration in the Hydrogen Control Cabinet was zero percent.

The licensee notified the NRC Resident Inspector.

Notified the R1DO (Jackson), IRD MOC (Stapleton), NRR (King), DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).

Page Last Reviewed/Updated Tuesday, October 10, 2017
Tuesday, October 10, 2017