Patent ID: 8804896
Filing Date: 2014-08-12
Classification: B01D,G21C,G21F,Y02E

Abstract:
1. A method for depressurizing a nuclear power plant including a containment shell for containing activity carriers and having an outlet for a depressurization flow, the depressurization flow conducted out of the containment shell into the atmosphere via a depressurization line being provided with a filter system, the filter system containing a filter chamber having a filter chamber inlet, a filter chamber outlet and a sorbent filter lying there-between, which comprises the steps of: first conducting the depressurization flow in a high-pressure section of the depressurization line; depressurizing the depressurization flow by means of expansion at a throttle device; immediately before the depressurization flow enters the filter chamber, conducting the depressurization flow that has been depressurized by the throttle device through a superheating section, in which the depressurization flow is heated by direct or indirect heat transfer from a not yet depressurized depressurization flow in the high-pressure section to a temperature which is at least 10° C. above a dew-point temperature present there; conducting the depressurization flow at least partially through the filter chamber having the sorbent filter; and blowing out the depressurization flow into the atmosphere.