| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
03/03/2011 - 03/04/2011 ** EVENT NUMBERS ** |
 | Agreement State | Event Number: 46577 | Rep Org: MA RADIATION CONTROL PROGRAM
Licensee: MASSACHUSETTS GENERAL HOSPITAL
Region: 1
City: BOSTON State: MA
County: SUFFOLK
License #: RCN01762
Agreement: Y
Docket:
NRC Notified By: ANTHONY CARPENITO
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 01/31/2011
Notification Time: 13:59 [ET]
Event Date: 01/13/2011
Event Time: [EST]
Last Update Date: 03/03/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
JAMES DWYER (R1DO)
RICHARD TURTIL (FSME)
| Event Text AGREEMENT STATE REPORT - POTENTIAL DOSE EXCEEDING ANNUAL OCCUPATIONAL DOSE LIMIT FOR ADULTS
The following was received via email:
"On 1/13/11, the licensee reported to the Agency [Massachusetts Radiation Control Program] a potential dose exceeding the adult occupational total effective dose equivalent limit of 5 rem. The situation causing this event occurred during late December 2010, when a number of emergency repairs within a cyclotron were conducted over several days. The potential for overexposure was suspected on 1/5/11. A dosimeter exposure readings report of the [Optically Stimulated Luminescence OSL] was received by the licensee from the dosimeter service, after quick read, on 1/13/11. Affected individual's annual TEDE reported at 5457 mrem. Exposure (1596 mrem) obtained by official [OSL] dosimeters worn during cyclotron repair operations differed significantly from exposure (620 mrem) obtained by electronic dosimeter worn simultaneously during cyclotron repair operations. Electronic dosimeters are used by individuals for real-time readings during the repair operations. The licensee removed affected individual from any potentially high exposure operations.
"Investigation ongoing. Intermediate and draft reports have been received. Awaiting final written report by licensee.
"The Agency considers this event to still be OPEN."
Massachusetts Event # 01-9454.
Notified R1DO (Dwyer) and FSME (McIntosh).
* * * UPDATE FROM TONY CARPENITO TO JOHN SHOEMAKER AT 1441 EST ON 03/03/11 VIA EMAIL * * *
"Subsequent on-site agency inspection performed. Licensee submitted follow-up report [on] 2/28/11.
"Cause Description: Misinterpretation of licensee's pre-existing policy restricting workers when YTD [year-to-date] annual exposures approach in-house limits and over-reliance on real-time electronic dosimeters worn specifically during potentially high exposure operations.
"Precipitating factor: Over-reliance on real-time electronic dosimeters worn specifically during potentially high exposure operations.
"Corrective Action: Licensee to implement policy re-write to minimize subjective misinterpretations, change full-time dosimeter exchange frequency to obtain more current year-to-date exposure totals, replace current job-specific dosimeters with different type of dosimeter better suited to monitor type of work involved, apply administrative correction factors to readings of job-specific dosimeters to obtain more conservative real-time results.
"The individual [involved in this event was] removed from potentially high exposure operations during investigation and re-instated several weeks later on 3/3/11.
"Although the Agency considers this specific situation to be closed, it will be revisited during future inspections."
The report did not state whether an over exposure actually occurred.
Notified R1DO (Dimitriadis) and FSME (McIntosh). |
| Agreement State | Event Number: 46648 | Rep Org: IOWA DEPARTMENT OF PUBLIC HEALTH
Licensee: UNIVERSITY OF IOWA
Region: 3
City: IOWA CITY State: IA
County:
License #: 0037152AAB
Agreement: Y
Docket:
NRC Notified By: RANDAL DAHLIN
HQ OPS Officer: CHARLES TEAL | Notification Date: 02/28/2011
Notification Time: 12:14 [ET]
Event Date: 02/22/2011
Event Time: [CST]
Last Update Date: 02/28/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
BILLY DICKSON (R3DO)
ANGELA MCINTOSH (FSME)
| Event Text AGREEMENT STATE REPORT - STATIC ELIMINATOR SOURCE SEAL INTEGRITY LOST
"The following report was received by the Iowa Department of Public Health (IDPH) on February 23, 2011. On February 22, 2011, the University of Iowa Environmental Health and Safety (EHS) staff discovered evidence that a Nickel-63 foil in a custom made static eliminator had lost its seal integrity. The source in question consists of two 8.951 mCi Ni-63 foils that are housed in a custom built static eliminator (2 inch diameter steel pipe with the foils glued to the walls of the pipe). The static eliminator is attached to a chamber apparatus located in a fume hood within a principal investigator's lab. The results of the leak test indicated approximately 40,203 dpm (0.0181 uCi's) of activity on a wipe taken of several areas in the apparatus housing the Ni-63 foils. EHS personnel bagged the static eliminator and returned it to EHS for disposal. The two Ni-63 sources were purchased from DuPont/Merck in March of 1995. The Principle Investigator (PI) had been conducting research using these sources since that time. The University RSO reports that the PI does not have any more of these custom devices and will be pursuing other options for research. A previous leaking Ni-63 foil was reported as NMED Item Number 100592."
Iowa Incident No. 110002 |
| Power Reactor | Event Number: 46653 | Facility: DAVIS BESSE
Region: 3 State: OH
Unit: [1] [ ] [ ]
RX Type: [1] B&W-R-LP
NRC Notified By: TOM COBBLEDICK
HQ OPS Officer: JOHN KNOKE | Notification Date: 03/03/2011
Notification Time: 20:11 [ET]
Event Date: 03/03/2011
Event Time: 13:53 [EST]
Last Update Date: 03/03/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
50.72(b)(3)(v)(B) - POT RHR INOP
| Person (Organization):
KENNETH RIEMER (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 | Event Text TEMPORARY LOSS OF EMERGENCY FEEDWATER TRAINS
"While testing fire detection systems, a radio was keyed in the vicinity of the Auxiliary Shutdown Panel. Control Room alarms that occurred at the same time led to a review of plant data. This review revealed two momentary events (approximately 8 and 19 seconds) over an approximate two minute period that caused momentary reductions in the control signals to the Auxiliary Feedwater Pump and Motor-Driven Feedwater Pump discharge control valves. These momentary signal reductions resulted in all trains of Emergency Feedwater being inoperable for approximately two minutes, pending further evaluation.
"With all trains of Emergency Feedwater inoperable, this event is being reported in accordance with 10 CFR 50.72(b)(3)(v) as a momentary loss of safety function for equipment needed to (A) shut down the reactor and maintain it in a safe shutdown condition and to (B) remove residual heat.
"Fire detection testing has been completed, and a sign placed on the Auxiliary Shutdown Panel Room door stating that no radio usage is permitted inside the room."
All trains of Emergency Feedwater are now operable.
The licensee has notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 46654 | Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [1] [ ] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: RON FRY
HQ OPS Officer: BILL HUFFMAN | Notification Date: 03/03/2011
Notification Time: 23:27 [ET]
Event Date: 03/03/2011
Event Time: 22:59 [EST]
Last Update Date: 03/03/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
| Person (Organization):
ANTHONY DIMITRIADIS (R1DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 99 | Power Operation | 86 | Power Operation | Event Text TECHNCIAL SPECIFICATION REQUIRED SHUTDOWN DUE TO INOPERABLE HPCI
At 2259 EST, Susquehanna Unit 1 commenced a TS Required shutdown for High Pressure Coolant Injection (HPCI) T.S. 3.5.1. Due to a suspected steam leak, the HPCI Inboard Steam Supply Valve HV155F002 was closed to attempt to identify and isolate an unknown drywell leakage condition. After closing the HV155F002, a detectable change in drywell leak rate occurred, therefore, HV155F002 was left closed. Closing HV155F002 makes HPCI INOP and UNAVAILABLE.
TS 3.5.1 was entered for this condition on 2/25/2011 at 2136 EST. LCO completion time for T.S. 3.5.1 entry is 3/11/2011 at 2136 EST.
The licensee has notified the NRC Resident Inspector and State authorities. The licensee also anticipates issuing a press release. | |