GRAVITATIONAL SETTLING BED FOR REMOVAL OF PARTICULATE IMPURITIES IN A NUCLEAR STEAM GENERATOR

摘要

A low velocity region above the primary deck in a recirculating nuclear stea m generator is formed through which flows a small percentage of recirculated liquid. The liquid flow is established by strategically sized and positioned inlet and outlet ports. Suspended particles within the low flow zone will settle onto the horizontal primary deck plate and are thereby removed from the recirculated flow.