Heat dissipation system for a nuclear reactor, in particular a pressurized water reactor

US5579355A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Werner Leidemann · Herzogenaurach, DE
• Pius Mackert · Erlangen, DE
• Heinz Hartmann · Buckenhof, DE

Key dates

• Filing date: Sep 11, 1995
• Grant date: Nov 26, 1996
• Expiry date: Sep 11, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E30/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A nuclear reactor, in particular a pressurized water reactor, has a containment, a containment shell surrounding the containment and a concrete construction of a reactor building surrounding the containment shell. A heat dissipation system for the nuclear reactor includes a sump volume disposed in a lower region of the containment shell for receiving coolant. A sump cooler is disposed inside the sump volume, has cooling tubes with a primary side and a secondary side and has feed and return lines. The primary side of the cooling tubes is covered at least when the sump volume is largely filled with coolant. An intermediate cooler has a tertiary side and is connected through the feed and return lines of the sump cooler to the secondary side of the cooling tubes. A heat sink is disposed outside the reactor building and is connected to the intermediate cooler on the tertiary side.