Event Notification Report for November 07, 2003

MANUAL SCRAM AT DUANE ARNOLD DUE TO HI COOLANT CONDUCTIVITY

"Inserted a Manual Reactor Scram due to high reactor coolant conductivity. Source of high reactor coolant conductivity is not certain at this time.

"In addition, this report is being made under 50.72(b)(3)(iv)(A), 'Any event or condition that results in valid actuation of any systems listed in paragraph (b)(3)(iv)(B) of this section' due to PCIS groups 2, 3, and 4 being received when reactor water level dropped below 170". All isolations went to completion. The reactor water level drop is normal following a scram from 45% power due to void collapse in the reactor vessel. Reactor water level was restored to normal and the PCIS group isolations were reset.

"The current plan is to cool down the plant and enter Mode 4, plant cool down is being achieved using the RCIC system until the source of the conductivity transient is identified and isolated."

The licensee indicated shortly prior to the scram a coolant chemistry transient was in progress. The limit for reactor coolant conductivity is 5 micro mhos per centimeter and the highest conductivity reading reached was 8 micro mhos per centimeter. The licensee speculates the most likely source of the high conductivity is related to an off service condensate demineralizer. There were no automatic ECCS initiations. No SRVs lifted. All control rods properly inserted.

The licensee notified the NRC Resident Inspector.

RELEASE OF CHEMICALS INTO STATE WATERS

"At 0830 hours on 11/07/03, a phosphoric acid/sodium hydroxide/potassium hydroxide diluted chemical mix overflowed from a holding tank, which resulted in a discharge of the chemicals into state waters through the plants storm drain system. This discharge was a result of two un-isolated filter vents that allowed the chemical mixture to overflow to the ground. It is estimated that approximately 70 gallons of the chemical mixture entered the plants discharge canal, which enters state waters, before it was isolated. The chemical mixture is considered non-hazardous. There were no radiological consequences associated with the discharge of the chemical mixture. Cleanup efforts are in progress.

"This event is being reported in accordance with 10CFR50.72(b)(2)(xi) due to the fact that the Virginia Department of Environmental Quality was notified at 1330 hours EDT of the discharge into state waters. The NRC resident was notified of this condition."

FFD REPORT

A non-licensed supervisory individual was found to have failed a fitness for duty test because he exceeded the site's blood-alcohol level limits. The individual's access has been blocked. Contact the HOO for additional details.

The NRC Resident Inspector has been notified.