VVER Emergency Cooling System Sump Protection Device, Filter Module of Sump Protection Device and Filter Element of Sump Protection Device

Abstract

Emergency Core Cooling System under loss-of-coolant accidents, including a sump protection device (SPD) in the emergency cooling system of a VVER, and the filter module and filter element of the sump protection device, which is to protect sumps from accumulation of debris in case of a loss-of-coolant accident. Disclosed is a VVER emergency cooling system sump protection device, comprising a system of filters installed at the intake opening of the upper part of the sump located in the reactor containment bottom and connected to the intake of emergency cooling system pipeline. It consists of header-connected filter modules preventing debris from entering the intake of emergency cooling system pipelines; each filter module has slotted grates on sides and on top, and filter elements arranged inside are designed as laterally slotted filtration pipes and perforated distribution tubes (inside the pipes) the inner cavities of which are connected to headers.

Dependencies are inferred from the claim text.