Power Reactor

Event Number: 43753

Facility: HOPE CREEK
Region: 1 State: NJ
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: BERNIE LITKETT
HQ OPS Officer: JEFF ROTTON

Notification Date: 10/29/2007
Notification Time: 02:12 [ET]
Event Date: 10/28/2007
Event Time: 22:03 [EDT]
Last Update Date: 10/29/2007

Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)( iv)(A) - VALID SPECIF SYS ACTUATION

Person (Organization) :
JOHN CARUSO (R1)

Unit

SCRAM Code

RX CRIT

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

1

N

N

0

Refueling

0

Refueling

REFUEL FLOOR EXHAUST HI-HI RADIATION ALARMS DURING REACTOR REASSEMBLY

"On 10/28/07 at 2203 in Operational Condition 5, two of three Refuel Floor Exhaust Radiation Monitors actuated on HI-HI Radiation during the Moisture Separator lift for Reactor Pressure Vessel Reassembly. Reactor Building Ventilation was procedurally secured at the time of the actuation to minimize the potential for airborne contamination. The cause of the elevated radiation levels at the Refuel Floor Exhaust Radiation Monitors is currently attributed to the lifting of the Moisture Separator closer to the surface of the water to obtain an unobstructed underwater path to the Reactor Pressure Vessel. The resulting ESF signal yielded an automatic start of the 'A' and 'D' Station Service Water Pumps, the Filtration Recirculation and Ventilation System, and load-shed of non-1E breaker loads. All systems responded as expected. Systems and components actuated by the condition have been restored to a normal stand-by alignment as required. No other systems were affected and the plant is stable in Operational Condition 5."

The licensee will notify the NRC Resident Inspector. The licensee notified the Lower Alloways Creek Township.