CV structure and support systems

Question 1

Design Pressure and temperature of containment?

Answer 1

• 42psig
• 263F
• Designed pressure will not be exceeded during any rupture to the RCS system. Worst case scenario

Question 2

IVSW purpose

Isolation Valve Seal Water

Answer 2

-Provides a simple and reliable means of injecting seal water between the seats and packing of isolation valves and into the piping between valves to minimize the release of fission products from the atmosphere to the environment in the event of a DBA LOCA

Question 3

IVSW important valves PCV1922 A and B

Answer 3

• Normally closed, open on SI signal or phase “A” signal
• Opens to supply the IVSW system from the IVSW Tank.
• Reset button found in cable spread room and can only be reset after the Phase A has been reset first.

Question 4

IVSW Tank

psig?

Answer 4

• Pressure shall be monitored during make-up to the tank to prevent lifting of system relief valves set at 68-72psig.
• When IVSW has been initiated, serviced systems shall not be returned to operation until IVSW is terminated or isolated.