STRAINER FOR FILTERING WATER TO AN EMERGENCY COOLING SYSTEM IN A NUCLEAR POWER PLANT

摘要

A back-flushable strainer is used for filtering water to an emergency cooling system in a nuclear power plant comprising a reactor arranged in a containment whose bottom part forms a condensation pool in which the strainer is mounted. The strainer comprises a suitably cylindrical strainer wall having a plurality of perforations through which the water flows from the outside and in when filtered, while the direction of flow is the reverse in back-flushing. A number of wings (17) are arranged on the outside of the strainer wall (10), dividing a fibre mat built up on the outside of the strainer wall (10) into a number of sections which separately are more easily released than a continuous, circumferential fibre mat.