Patent · US Expired

Closing device for initiating cooling for a core melt

US5703917A · kind A · utility

5Cited by

4References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gerhard Hau · Albstadt, DE
Lothar Wistuba · Herzogenaurach, DE
Josef Hollmann · Schlüsselfeld, DE

Key dates

Filing date	Dec 8, 1995
Grant date	Dec 30, 1997
Priority date	—
Expiry date	Dec 8, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E30/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A nuclear reactor facility has a collecting chamber for a core melt, a coolant tank and a coolant connecting line having an inlet end connected to the coolant tank and an outlet end protruding into the collecting chamber and having an outlet cross section. A closing device at the connecting line which opens as a function of temperature for initiating cooling of the core melt includes a closing member disposed at the outlet end of the connecting line for normally tightly closing the outlet end. The closing member has a temperature-dependent opening element for tripping clearance of at least a portion of the outlet cross section of the connecting line upon thermal action by the core melt to direct the coolant from the coolant tank, through the connecting line and into the collecting chamber. The opening element being a plastic block which thermally insulates the coolant, and is corrosion-resistant.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.