Three Stage Safety Valves No Longer In Hatch or Pilgrim

Three stage Safety Valves No Longer in Hatch or Pilgrim

As I said, I call the three stage INOP because there was an active defect in the valve and there was no understanding with their failure mechanism. This is called being conservative.   

* * * UPDATE FROM JOHN DeBONIS (VIA EMAIL) TO STEVEN VITTO AT 1256 EDT ON 6/30/15 ***

Curtiss-Wright provided an update to state their root cause analysis findings and corrective actions. Corrective actions are estimated to be completed within 12 months.

"The following plants were supplied 0867F MS-SRVs:

Pilgrim (Model 09J-001) Quantity Shipped = 8

FitzPatrick (Model 09H-001) Quantity Shipped = 4, Quantity on order= 8

Hatch 1 and 2 (Model 09G-001) Quantity Shipped = 24, Quantity on order= 12

"The following plants will be supplied 0867F MS-SRVs:

Hope Creek (Models 14J-001, 14J-002) Quantity on order = 7

"Valves Currently Installed

 

"Target Rock recommends valves currently installed be inspected to ensure the main piston shoulder has contact with the main disc stem shoulder. These inspections should be scheduled based on plant-specific indications of the potential for fretting. These inspections can be performed by removing the base assembly from the main body and physically measuring for shoulder-to-shoulder contact.

"Should you have any questions regarding this matter, please contact Michael Cinque, Director of Program Management at (631 ) 293-3800."

Notified NRR Part 21 Group (via email), R1 DO (Dimitriadis), and R2DO (Suggs).