Thursday, March 09, 2017

Entergy (Waterford) Having Troubles Knowing What Position Their Valves Are In

It is a indication of dysfunction with the control room employees.
Power ReactorEvent Number: 52600
Facility: WATERFORD
Region: 4 State: LA
Unit: [3] [ ] [ ]
RX Type: [3] CE
NRC Notified By: SCOTT MEIKLEJOHN
HQ OPS Officer: JEFF ROTTON
Notification Date: 03/08/2017
Notification Time: 20:13 [ET]
Event Date: 03/08/2017
Event Time: 16:27 [CST]
Last Update Date: 03/08/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
JESSE ROLLINS (R4DO)

UnitSCRAM CodeRX CRITInitial PWRInitial RX ModeCurrent PWRCurrent RX Mode
3NY100Power Operation100Power Operation
Event Text
BOTH TRAINS OF LOW PRESSURE SAFETY INJECTION INOPERABLE DUE TO MAINTENANCE ERROR

"This is a non-emergency notification from Waterford 3.

"On March 8, 2017 at 1627 [CST] Technical Specification (TS) 3.5.2 action 'c' was entered due to both trains of Low Pressure Safety Injection (LPSI) being inoperable. This TS action requires one train of LPSI be restored within 1 hour or be in at least Hot Standby within the next 6 hours.

"It was identified that LPSI train B was inoperable due to SI-135B, Reactor Coolant Loop 1 Shutdown Cooling Warmup Valve, being found open. At the time of discovery, LPSI train A was inoperable for pre planned maintenance, but available and awaiting operability retest. The station was in compliance with TS 3.5.2 action 'a'. Maintenance workers were scheduled to work Sl-135A Reactor Coolant Loop 2 Shutdown Cooling Warmup Valve, and inadvertently began work on Sl-135B and manually opened the valve which resulted in the LPSI Train B being inoperable.

"Once identified by Operations Control Room staff, the valve [SI-135B] was placed in the closed position and stroke tested to ensure operability. TS 3.5.2 action 'c' was exited at time 1705. The station remained in compliance with TS 3.5.2 action 'a'. "

The licensee notified the NRC Resident Inspector.

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