A DEVICE FOR EXTRACTION OF GAS IN A NUCLEAR POWER PLANT

摘要

The present invention relates to a device (14) in a nuclear power plant which comprises a gas accumulation space (1, 4, 7, 8, 9, 10, 11, 12, 14, 16, 25) containing a substantially stationary quantity of gas separated from a coolant. The gas quantity contains gases, which at the prevailing pressure and temperature are non-condensable. In the gas quantity a first partial pressure prevails, and outside the gas accumulation space a second partial pressure prevails which is lower than the first partial pressure. The device (14) comprises a filtering member (20, 20a, 20b) which is permeable to the non-condensable gases. The device (14) is associated with an opening (21) in the gas accumulation space. The difference between the first and second partial pressures is adapted to extract the main part of the non-condensable gases through the filtering member (20, 20a, 20b).