Nuclear Power Plant

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20130223581A1
SERIAL NO

13768600

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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When a power source is lost after an operation stop of a nuclear power plant, a first open/close valve is opened via a first battery at an early stage and steam in a reactor pressure vessel (RPV) is condensed in a suppression pool. The heat of the water in the suppression pool is transmitted to a cooling water pool located below inner space between first and second reactor containment vessels surrounding the RPV. A second open/close valve is opened via a second battery at the early stage and cooling water in a tank is injected into the RPV. After the early stage, a third open/close valve is opened via a third battery, and a cooling medium becomes steam by an evaporator in the RPV, the steam being condensed by a condenser disposed in the inner space to become a liquid of the cooling medium and is returned to the evaporator.

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Patent Owner(s)

Patent OwnerAddress
HITACHI-GE NUCLEAR ENERGY LTD1-1 SAIWAI-CHO 3-CHOME HITACHI-SHI IBARAKI 317-0073

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
CHAKI, Masao Hitachi-shi, JP 21 106
KATONO, Kenichi Hitachi-shi, JP 9 17
KITO, Kazuaki Mito-shi, JP 9 23

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