On September 27, 2003, at
1544 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.87492e-4 months <br /> Eastern Daylight Savings Time, while In a refueling outage, R.E. Ginna Nuclear Station experienced a momentary invalid partial Safety Injection (
SI) signal to the "A" train. The invalid signal was the result of an error made while placing a jumper across a relay during a 24 month surveillance. The invalid partial
SI signal caused the following systems to actuate: "A " train Containment Ventilation Isolation (
CVI), "A" train Diesel Generator (
DG), trip of
MCC G1, full opening of
Service Water (
SW) AOV-4561 to the containment recirculation fans, and the opening of
Residual Heat Removal (
RHR) core deluge valve MOV-852A. Each individual actuation was complete, the "A"
DG started and functioned as designed, and all support systems functioned properly. The individual slave timers fed from the
SI relay did not actuate. The most probable cause of this was the momentary nature of the partial
SI signal.
The licensee informed the NRC Resident Inspector.
