Event Notification Report for April 22, 2002

MEDICAL MISADMINISTRATION

The following event description is taken from a facsimile:

"On April 22, 2002, the technologist injected a patient with a syringe labeled Tc-99m MAG 3 in order to image the kidneys. The gamma camera showed uptake in the liver-kidney indicating a sulfur colloid dose. The patient was prescribed a 4.5 mCi dose of Tc-99m MAG 3, but received a 4.5 mCi dose of Tc-99m Sulfur Colloid. The patient and the pharmacy were notified of the error. The dose for a patient receiving 5 mCi of Tc-99m Sulfur Colloid is estimated as the following: Liver - 12.15 Rad, Spleen - 7.65 Rad, Bone Marrow - 0.05 Rad, Testes - 0.02 Rad, Ovaries - 0.2 Rad, and Total Body - 0.675 Rad."

MICHIGAN STATE POLICE AT DC COOK PLANT ENTRANCE.


The following is a courtesy call regarding an event that occurred at the DC Cook Nuclear Power Plant at 0600 on 4/22/02. The following has not been issued as a Cook Plant news release but it is believed that the news media is already aware of this via other means.

At 0600 on 4/22/02, Michigan State Police (MSP) arrived at the Cook Plant main entrance. MSP told Cook Plant Security that they were waiting for an individual known to work at Cook to show up. MSP had previous encounters with this individual and knew this person had concealed weapons permit, was known to carry a weapon in the car and had been previously advised by MSP to not carry a weapon on Cook property.

When the individual, a contractor, arrived, Cook Plant Security personnel asked him if had a weapon in his car. He stated that he did not, having stashed it offsite on the highway. At this point the MSP advised him that he would take them to the location of the weapon. About 15 minutes later MSP and the individual returned, with MSP in possession of the weapon. MSP stated that they would retain possession of the weapon pending further investigation. Having no other reasons to deny access, the individual was allowed on site.

EMERGENCY SIRENS ACTUATED DURING A SILENT TEST


Inadvertent Emergency Response Siren actuation occurred in Calvert County during the weekly silent test. All 49 sirens sounded for approx. 15 seconds.


The NRC Resident Inspector was notified of this event by the licensee.

MANUAL RPS ACTUATION

"Susquehanna Unit 1 was at 20% power and in the process of preparing to further increase power following a Refueling and Inspection Outage. At 0016 on 4/22/02, the B Reactor Recirculation Pump tripped for an unexplained reason. During a review of the plant response to the transient, it was discovered that the unit was operating to the left of the expected Power to Flow curve. There was no indication of power flux oscillations from the nuclear instrumentation, but no guidance was available on how to respond to this condition. Reactor Engineering and Operations Management were contacted and it was decided to manually scram the unit. At 0115 the Mode Switch was taken to Shutdown and all control rods inserted. This was an unplanned RPS Actuation and in accordance with 10 CFR 50.72(b)(2)(iv)(B) requires a four-hour ENS Notification. Reactor water level dropped below level 3 which is expected during a scram, feedwater level control responded to return level to normal and all level 3 isolations went to completion. There were no ECCS initiations, no challenges to containment, and no indication of radiation releases. Operations is currently performing a controlled cooldown to mode 4, an investigation into the cause of the recirc pump trip is ongoing."

The NRC Resident Inspector has been notified.