NUCLEAR REACTOR LOCKING PISTON IMPELLING SYSTEM AND VALVE ASSEMBLY.

摘要

The invention provides a valve locking piston impelling system to paralyze a nuclear reactor. "Vibration" in a retention valve assembly during control fluid loading and/or re-loading of a control line, is eliminated by providing a valve head and a defined valve head resistance portion to resist valve head movement when it is pushed from sealing coupling in its bearing, during loading or unloading process.