Korea Atomic Energy Research Institute

Industry-university Cooperation Foundation Hanyang University

Tae Soon Kwon

Dong Jin Euh

Yeon Sik Kim

Hae Seob Choi

Woo Shik Kim

Sang Min Lee

Jong Heon Kim

Joon Eon Yang

Won Pil Baek

Chul Hwa Song

Ki Hong Pak

Young Sik Cho

The present disclosure relates to an apparatus for detecting nuclear reactor coolant leaks that is capable of maintaining radiation detection reliability and the integrity of a radiation detector from high-dose background radiation inside a nuclear reactor when a coolant leaks from the primary coolant system of the nuclear reactor. The apparatus of the present disclosure includes a shield having an internal space into which sample air containing a coolant leaking from a primary coolant system pipe of a nuclear reactor is introduced. The shield is configured to close the exposed internal space or expand the internal space through detachable coupling. The apparatus of the present disclosure further includes a first sensor disposed in the internal space to obtain a radiation measurement signal from the sample air. The apparatus of the present disclosure further includes a discriminator for determining whether a coolant is leaking based on the radiation measurement signal.

Apparatus for detecting nuclear reactor coolant leaks

A sensor tube according to the present disclosure includes a body including a body extension having opposite ends connected to measurement air connection pipes and an opening, the measurement air connecting pipes being connected to a humidity sensor to deliver moisture to the humidity sensor using measurement air or allow the measurement air released from the humidity sensor to flow therethrough, and the opening being formed in the body extension to cause an interior space of the body extension and the outside to be in communication with each other such that the moisture is introduced into the interior space of the body extension from the outside through the opening, and an opening/closing part that selectively opens or closes the opening by being operated by a difference in pressure between the interior space of the body extension and the outside.

Sensor tube of humidity sensor, tube assembly, and humidity sensor system

A sensor tube according to the present invention comprises: a tubular body for connecting two connection pipes to each other, wherein the two connection pipes are connected to a humidity sensor, so that the connection pipes transfer steam to the humidity sensor by using circulating air or air discharged from the humidity sensor flow in the connection pipes; and a cover surrounding at least a part of the outer surface of the body to prevent foreign substances having a predetermined size or larger from passing, wherein the body is formed as a porous sintered body which allows stream to be introduced from the outside of the body into the body and be transferred by the circulating air.

Sensor tube for humidity sensor and humidity sensor assembly using same

A residual heat removal system for a nuclear power plant. The residual heat removal system for a nuclear power plant may include an air duct provided on an outside of a reactor containment building, a heat exchanger disposed on an inside of the air duct, a first pipe to transfer, to the heat exchanger, steam generated in a steam generator disposed on an inside of the reactor containment building, and second pipe to transfer, to the steam generator, water condensation that is cooled and condensed in the heat exchanger, wherein the heat exchanger is air-cooled using outside air flowing inside of the air duct.

Water-spray residual heat removal system for nuclear power plant

Growing community of inventors

Daejeon, South Korea

Tae Soon Kwon