Htgr reactor design pdf

The japanese interest in the htgr has resulted in the construction of. The high temperature gascooled reactor htgr is particularly attractive due to its capability of producing high temperature helium gas and inherent safety characteristics. Hexagonal block fuel elements for the prismatic htgr design 6. These interesting aspects make htgr worthy of discussion on the future advanced reactors. The hightemperature gascooled reactor htgr is similar in concept to the agr. Japan atomic energy agency has conducted a conceptual design of a 50 mwt smallsized high temperature gas cooled reactor htgr for multiple heat applications, named htr50s, with the reactor. The design parameters of a small hightemperature gascooled reactor htgr for passive decay heat removal and located either aboveground or underground have been studied in previous works. It covers land based and marine based watercooled reactors, high temperature gas cooled reactors, liquid metal, sodium and gascooled fast neutron spectrum reactors and molten salt reactors.

Manual or computer automated image analysis is performed to measure the. Safety requirements for design and safety assessment of htgr and fast reactors. Pdf a smallsized htgr system design for multiple heat. High efficiency and attractive economics are possible without compromising the high levels of passive safety expected of advanced nuclear designs. Comparative study on htgr design for passive decay heat. Several attempts have been made to build reactors of this type, but none has so far entered commercial service. Calculation, and head of the division of reactor physics, thermal hydraulics and system simulation. Licensing criteria licensing criteria used for water reactors during this time period was adapted for htgr including the general design criteria. Inl, 2015, relap53d code manual, volumes iv, inlmis1536723.

Nuclear power currently only supports electricity generation. General attributes of modular prismatic and pebble bed htgrs. Early pressure pulse was vented through building louvers, while smaller and later flows, with more fission products flows were filtered through charcoal. Advances in small modular reactor technology developments. In 2006, he was responsible for the division of general design of high temperature gas cooled reactor htgr. Hightemperature gas cooled test reactor point design. A point design for a graphitemoderated, hightemperature. Arevas 625 mwt steam cycle high temperature gascooled reactor sc htgr has been selected by the next generation nuclear plant ngnp industry alliance as the reactor design concept of choice to provide high temperature process steam for industrial applications. Modular htgr rccs key design considerations rccs maintains cavity wall and reactor vessel temperatures rccs heat removal rate is similar during normal operations and accidents rccs is a simple system, always passive under safetyrelated conditions variety of possible rccs configurations. High temperature gas reactornew production reactor. Pdf safety requirements for design and safety assessment of. The term typically refers to the next step in the evolutionary development of hightemperature gascooled reactors htgrs.

Over the past five decades, high temperature gascooled reactors htgrs. The high temperature gascooled reactor jrc publications. The pbmr is a high temperature gas cooled reactor htgr, with a closedcycle, gas turbine or brayton power conversion system. In many ways this book is a unique source of past experience, and hopefully, it will serve as an important part of. Currently, he is the deputy director and deputy chief engineer of inet in charge of htgr projects. Conference paper pdf available october 2012 with 174 reads.