The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1979
Filed:
Apr. 14, 1975
Hans-Peter Schabert, Erlangen, DE;
Leonhard Irion, Ruckersdorf, DE;
Hartmut Seidelberger, Erlangen, DE;
Kraftwerk Union Aktiengesellschaft, Mulheim, DE;
Abstract
A pressurized-water reactor installation comprises a pressure vessel containing a core, a main reactor coolant system formed by one or more main coolant loops which are each formed by a steam generator and a main coolant pump and main coolant piping interconnecting the vessel, pump and generator. A pressurizer is connected with the coolant system to maintain a normal operating pressure on water in the loop and which prevents the water from boiling in the loop and pressure vessel. An emergency core cooling system is provided which includes a supply of emergency water and activating means responsive to a drop in the normal operating pressure in the loop, for automatically feeding the emergency water into the vessel to flood the core. In case the pump fails to operate, the pressure in the loop increases due to overheating of the water. However, the loop is provided with a pressure-relief means responsive to such a pressure increase in the loop and which opens the loop to its surrounding atmosphere to a degree dropping the pressure in the loop to below its normal operating pressure, thus causing the emergency core cooling system to be activated.