Power Reactor

Event Number: 44195

Facility: SALEM
Region: 1 State: NJ
Unit: [ ] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JACK OSBORNE
HQ OPS Officer: JEFF ROTTON

Notification Date: 05/09/2008
Notification Time: 13:15 [ET]
Event Date: 05/09/2008
Event Time: 10:59 [EDT]
Last Update Date: 05/09/2008

Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)( iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)( iv)(A) - VALID SPECIF SYS ACTUATION

Person (Organization) :
ART BURRITT (R1)

 

Unit

SCRAM Code

RX CRIT

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

2

M/R

Y

47

Power Operation

0

Hot Standby

Event Text

MANUAL REACTOR TRIP DUE TO HIGH STEAM GENERATOR LEVEL

"A manual trip of Salem Unit 2 was initiated due to a high water level in 23 Steam Generator. The high water level in 23 Steam Generator occurred while reducing power in accordance with the abnormal operating procedure for loss of circulating water. The operators had entered the abnormal operating procedure for circulating water due to loss of the electrical bus supplying power to the screens. The main supply breaker had tripped open due to the panel being wet from heavy rain. With the screens out of service, TWS [traveling water screen] DP's rose to a value where the circulators were removed from service per procedure. The restoration of the supply breaker is currently in progress. The cause of the high level in 23 Steam Generator during the power reduction is currently under investigation. Following the trip, 2N43, power range nuclear instrumentation channel 3, was declared inoperable due to inaccurate indication and is currently under investigation.

"The crew entered EOP-TRIP-1, appropriately transitioned to EOP-TRIP-2 and stabilized the plant at no load conditions. All rods fully inserted on the trip and all systems responded as designed with decay heat being removed via the 21 -24MS10's, the atmosphere relief valves.