Event Notification Report for February 14, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/13/2020 - 02/14/2020
Power Reactor
Event Number: 54525
Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: TOM RYDZEWSKI
HQ OPS Officer: BRIAN P. SMITH
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: TOM RYDZEWSKI
HQ OPS Officer: BRIAN P. SMITH
Notification Date: 02/14/2020
Notification Time: 03:36 [ET]
Event Date: 02/14/2020
Event Time: 00:25 [EST]
Last Update Date: 02/14/2020
Notification Time: 03:36 [ET]
Event Date: 02/14/2020
Event Time: 00:25 [EST]
Last Update Date: 02/14/2020
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
BRICE BICKETT (R1DO)
BRICE BICKETT (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | Y | 98 | Power Operation | 0 | Hot Shutdown |
MANUAL REACTOR SCRAM DUE TO RISING CONDENSER BACKPRESSURE
"At 0025 EST on February 14, 2020, Susquehanna Steam Electric Station Unit 2 reactor was manually scrammed due to rising Main Condenser backpressure caused by a loss of the Unit 2 Offgas Recombiner.
"Unit 2 reactor was being operated at maximum facility output, approximately 98% RTP, when at 0012 EST, Unit 2 Recombiner 0C145 Panel Trouble and 2C198 HWC Panel Trouble alarms were received along with rising Main Condenser backpressure. Initial Main Condenser backpressure was 2.6 in HgA and was rising at approximately 0.3 HgA/min. A Recirc Lim 2 was inserted to lower reactor power and condenser backpressure continued to rise following the reduction in reactor power. A manual scram was inserted at 0025 EST by placing the Mode Switch to Shutdown when condenser backpressure rose to 6 in HgA. All control rods inserted. Reactor water level lowered to -30 inches causing Level 3 (+13 inches) isolation and partial (Division 2) Level 2 (-38 inches) isolation. No ECCS actuations occurred and RCIC initiated. The Operations crew subsequently maintained reactor water level at the normal operating band using Reactor Feed Water. No steam relief valves opened. The Reactor Recirculation Pumps remained in service.
"The reactor is currently stable in Mode 3. Investigation into the cause of the loss of Unit 2 recombiner is underway.
"The NRC Senior Resident Inspector was notified. A voluntary notification to PEMA and press release will occur."
"At 0025 EST on February 14, 2020, Susquehanna Steam Electric Station Unit 2 reactor was manually scrammed due to rising Main Condenser backpressure caused by a loss of the Unit 2 Offgas Recombiner.
"Unit 2 reactor was being operated at maximum facility output, approximately 98% RTP, when at 0012 EST, Unit 2 Recombiner 0C145 Panel Trouble and 2C198 HWC Panel Trouble alarms were received along with rising Main Condenser backpressure. Initial Main Condenser backpressure was 2.6 in HgA and was rising at approximately 0.3 HgA/min. A Recirc Lim 2 was inserted to lower reactor power and condenser backpressure continued to rise following the reduction in reactor power. A manual scram was inserted at 0025 EST by placing the Mode Switch to Shutdown when condenser backpressure rose to 6 in HgA. All control rods inserted. Reactor water level lowered to -30 inches causing Level 3 (+13 inches) isolation and partial (Division 2) Level 2 (-38 inches) isolation. No ECCS actuations occurred and RCIC initiated. The Operations crew subsequently maintained reactor water level at the normal operating band using Reactor Feed Water. No steam relief valves opened. The Reactor Recirculation Pumps remained in service.
"The reactor is currently stable in Mode 3. Investigation into the cause of the loss of Unit 2 recombiner is underway.
"The NRC Senior Resident Inspector was notified. A voluntary notification to PEMA and press release will occur."
Agreement State
Event Number: 54527
Rep Org: MAINE RADIATION CONTROL PROGRAM
Licensee: MB-MICROTECH USA INC.
Region: 1
City: DEERFIELD BEACH State: FL
County:
License #: ME 05331
Agreement: Y
Docket:
NRC Notified By: CATHERINE PERHAM
HQ OPS Officer: BRIAN LIN
Licensee: MB-MICROTECH USA INC.
Region: 1
City: DEERFIELD BEACH State: FL
County:
License #: ME 05331
Agreement: Y
Docket:
NRC Notified By: CATHERINE PERHAM
HQ OPS Officer: BRIAN LIN
Notification Date: 02/14/2020
Notification Time: 16:37 [ET]
Event Date: 02/14/2020
Event Time: 14:44 [EST]
Last Update Date: 02/14/2020
Notification Time: 16:37 [ET]
Event Date: 02/14/2020
Event Time: 14:44 [EST]
Last Update Date: 02/14/2020
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
10 CFR Section:
AGREEMENT STATE
Person (Organization):
BRICE BICKETT (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
BRICE BICKETT (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - MISSING TRITIUM WATCHES
The following is a synopsis of an email received from the Maine Radiation Control Program:
Fifty-two [self-luminous] watches containing 100 milliCuries each of Tritium were reported as missing or stolen from a shipment delivered to OKO International of Deerfield Beach, Florida. The watches were in transit from Hong Kong to Windsor, Maine. They were part of a shipment of 32 boxes containing a total of 2365 watches. Seven boxes were torn during transport and were re-packaged into five boxes. Upon arrival in Florida, there were 52 watches missing. The brand of watch is reported as an Aragon, with no model or serial number provided yet. Transport was via a common carrier. The licensee reported the theft to the Maine Radiation Control Department at 1444 [EST] on Friday, February 14, 2020. An open investigation is still ongoing with the state of Maine.
Maine Incident No.: ME 20-001
The following is a synopsis of an email received from the Maine Radiation Control Program:
Fifty-two [self-luminous] watches containing 100 milliCuries each of Tritium were reported as missing or stolen from a shipment delivered to OKO International of Deerfield Beach, Florida. The watches were in transit from Hong Kong to Windsor, Maine. They were part of a shipment of 32 boxes containing a total of 2365 watches. Seven boxes were torn during transport and were re-packaged into five boxes. Upon arrival in Florida, there were 52 watches missing. The brand of watch is reported as an Aragon, with no model or serial number provided yet. Transport was via a common carrier. The licensee reported the theft to the Maine Radiation Control Department at 1444 [EST] on Friday, February 14, 2020. An open investigation is still ongoing with the state of Maine.
Maine Incident No.: ME 20-001