Method and device for removing radioactive deposits
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United States of America Patent
Stats
-
Apr 6, 2004
Grant Date -
Dec 26, 2002
app pub date -
Jul 3, 2002
filing date -
May 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device and method for removing radioactive crud material deposited on surfaces of a nuclear fuel assembly in a nuclear plant is provided. The device comprises a container arranged to accommodate the nuclear fuel assembly, a first pumping means to pump a fluid, composed of water and ice, through the container in order to release the deposit from the nuclear fuel assembly by abrasion and to transport the released radioactive material out from the container. The first pump means also enables the feeding of a gas or steam or both to the fluid that is fed into and through the container in order to create a turbulence in the fluid. The device further comprises means, arranged in a .gamma.-radiation-dampening medium, disposed to receive the radioactive deposit transported out of the container by the fluid.
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