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Event Notification Report for January 13, 2002

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
01/12/2002 - 01/13/2002

EVENT NUMBERS
3863638737

General Information or Other
Event Number: 38636
Rep Org: OK DEQ RAD MANAGEMENT
Licensee: MILLS BIOPHARMACEUTICAL
Region: 4
City: OKLAHOMA   State: OK
County:
License #: OK27502-01
Agreement: Y
Docket:
NRC Notified By: BISHOP
HQ OPS Officer: CHAUNCEY GOULD
Notification Date: 01/17/2002
Notification Time: 18:14 [ET]
Event Date: 01/13/2002
Event Time: 00:00 [CST]
Last Update Date: 01/17/2002
Emergency Class: NON EMERGENCY
10 CFR Section:
Person (Organization):
DALE POWERS (R4)
SUSAN FRANT (NMSS)
ROBERT HAAG (R2)
Event Text
OKLAHOMA LICENSEE REPORTED A MISSING SHIPMENT IODINE-125 BRACHYTHERAPY SEEDS

Mills Biopharmaceutical Co reported that a shipment which left 1/11 via FedEx did not reach its destination, the Palisades Medical Center in New Jersey, on the expected date 1/14/02. The shipment consisted of brachytherapy seeds containing 13.3 millicuries of I-125. The biopharmaceutical company was notified by FedEx on 1/13 that the shipment had experienced a processing delay in Memphis, TN. and now FedEx can not locate the shipment. FedEx is currently looking for it.


Power Reactor
Event Number: 38737
Facility: FITZPATRICK
Region: 1     State: NY
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: TIMOTHY PAGE
HQ OPS Officer: FANGIE JONES
Notification Date: 02/28/2002
Notification Time: 16:42 [ET]
Event Date: 01/13/2002
Event Time: 22:26 [EST]
Last Update Date: 02/28/2002
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
JAMES LINVILLE (R1)
Power Reactor Unit Info
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
INVALID PRIMARY AND SECONDARY CONTAINMENT ISOLATIONS

The following report is taken from a 60 day report faxed to the Headquarters' Operations Center:

Invalid Primary and Secondary Containment Isolations Due to Spurious Upscale Spikes of the Reactor Building Ventilation Radiation Monitor B

Event Description:

At 2226 hours on January 13, 2002, and at 0258 hours on January 18, 2002, with the plant operating at 100 percent of rated thermal power, the Reactor Building (Secondary Containment) Ventilation Exhaust Radiation Monitor B spiked upscale due to invalid actuation signals. The plants response was identical on both occasions.

The radiation monitor upscale spikes resulted in automatic closure of outboard isolation valves and, therefore, isolation of the following systems or functions;
1. Primary Containment Drywell and Suppression Chamber pressure sensing for alarm and indication functions only,
2. Primary Containment Continuous Atmosphere Monitoring (CAM) for particulate and gaseous radioactivity monitoring, and
3. Primary Containment Hydrogen and Oxygen Analyzer B.

The trip signals also resulted in automatic isolation of the Reactor Building (Secondary Containment) Ventilation System and starting of the Standby Gas Treatment subsystem B to maintain the Reactor Building atmosphere at a slightly negative pressure.

System performance was in accordance with the design. Examinations of operating records indicated that the redundant monitor, other monitoring systems, and the plant computer system did not detect any abnormal radioactivity during the two events. Shift operating and radiation protection personnel investigated and did not detect any abnormal radiological conditions.

A root cause evaluation determined the reasons for the intermittent high scale spiking were fluctuations in DC voltage within the radiation monitor high voltage power supply. These fluctuations directly affected the Geiger-Mueller tube causing it to produce spurious high count-rate outputs of short duration.

Actions Taken:

1. Verified system responses were in accordance with the design.
2. Replaced the degraded high voltage power supply.
3. Successfully completed radiation monitor post work testing.
4. Restored the affected systems to service.

The licensee notified the NRC Resident Inspector.