Long-term high-temperature operation of the HTTR

Goto, Minoru; Shinohara, Masanori; Tochio, Daisuke; Shimazaki, Yasuhisa; Hamamoto, Shinpei; Tachibana, Yukio

doi:10.1016/j.nucengdes.2011.10.047

Cited by 29 publications

(9 citation statements)

References 3 publications

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“…A test plan of surveillance test is described in Section 5. A cumulative fast neutron fluence and temperature of fuel block estimated on the basis of the neutronic and temperature calculation are also given in Table 4 [16][17][18]. It was assumed that fast neutron fluence and temperature in each fuel block were equally distributed.…”

Section: Methodsmentioning

confidence: 99%

Investigation on structural integrity of graphite component during high temperature 950 °C continuous operation of HTTR

Sumita

Shimazaki

Shibata

2014

Journal of Nuclear Science and Technology

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Graphite material is used for internal structures in high temperature gas-cooled reactor. The core components and graphite core support structures are so designed as to maintain the structural integrity to keep core cooling capability. To confirm that the core components and graphite core support structures satisfy the design requirements, the temperatures of the reactor internals are measured during the reactor operation. Surveillance test of graphite specimens and in-service inspection using TV camera are planned in conjunction with the refueling. This paper describes the evaluation results of the integrity of the core components and graphite core support structures during the high temperature 950• C continuous operation, a high temperature continuous operation with reactor outlet temperature of 950• C for 50 days, in high temperature engineering test reactor. The design requirements of the core components and graphite core support structures were satisfied during the high temperature 950• C continuous operation. The dimensional change of graphite which directly influences the temperature of coolant was estimated considering the temperature profiles of fuel block. The magnitude of irradiation-induced dimensional change considering temperature profiles was about 1.2 times larger than that under constant irradiation temperature of 1000• C. In addition, the programs of surveillance test and ISI using TV camera were introduced.

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Section: Methodsmentioning

confidence: 99%

Investigation on structural integrity of graphite component during high temperature 950 °C continuous operation of HTTR

Sumita

Shimazaki

Shibata

2014

Journal of Nuclear Science and Technology

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“…The preparation of off‐site power sources like emergency diesel generators will definitely strengthened after the Fukushima disaster. Furthermore, the new technologies will have legislated passive safety and inherent safety features that can provide coolant function to avoid accidents in disasters such as the earthquake and tsunami on March 11, 2011. Therefore, the safety performance of advanced nuclear power technology has undoubtedly been improved greatly in the 40 years since Fukushima Daiichi was built, and in the proposed electricity system scenarios, the technology improvement should be considered thoroughly.…”

Section: Review Of the Policy Scenariosmentioning

confidence: 99%

“…With more intermittent renewable energy penetration, more clean gas power plants are expected to absorb intermittent renewable energy and supply electricity gap, but the import liquefied natural gas (LNG) is also subject to resource, price, and energy security constraints . On the other hand, the safety performance of advanced nuclear power technologies has been improved greatly , especially the passive safety of AP1000 , and inhere safety of high temperature gas reactor and small molten reactor . However, the public acceptance for the advanced nuclear power technologies is crucial important for their future.…”

Section: Introductionmentioning

confidence: 99%

Review of Japan's power generation scenarios in light of the Fukushima nuclear accident

Zhang

McLellan

2014

Int. J. Energy Res.

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SUMMARY Following on from the Fukushima Daiichi nuclear power plant accident, the Japanese government is now in the throes of reviewing its power policy. Under continuing policies of economic revival and greenhouse gas reduction, it is crucial to consider scenarios for the country to realize reliable, low‐carbon, and economic electricity systems in the future. On the other hand, the social acceptance of nuclear power will affect the final political decision significantly. Therefore, in the present study, proposed power generation scenarios in Japan in light of the Fukushima accident were reviewed comprehensively from economic, environmental, technological, resource, security, and social perspectives. The review concludes that in Japan, (i) renewable energy mainly solar and wind needs to be developed as fast as possible subject to various constraints, (ii) more gas power plants will be used to absorb the fluctuations of intermittent renewable energy and supply electricity gap, (iii) nuclear power will be reduced in the future, but a 0% nuclear power scenario by 2030 is unlikely to be a reasonable choice on most measures and (iv) the effective communication with the public is vital important. Copyright © 2014 John Wiley & Sons, Ltd.

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“…In the past, Japan Atomic Energy Agency (JAEA) had built a high temperature engineering test reactor [6] (HTTR), which is a prismatic type HTGR with a 30 MW thermal power. The HTTR has produced useful experimental data by, e.g., safety demonstration tests [7] and a 50-day continuous operation test [8]. Moreover, JAEA has been conducting design study of GTHTR300 series [9].…”

Section: Introductionmentioning

confidence: 99%

Proposal of a plutonium burner system based on HTGR with high proliferation resistance

Fukaya

Goto

Ohashi

et al. 2014

Journal of Nuclear Science and Technology

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Long-term high-temperature operation of the HTTR

Cited by 29 publications

References 3 publications

Investigation on structural integrity of graphite component during high temperature 950 °C continuous operation of HTTR

Investigation on structural integrity of graphite component during high temperature 950 °C continuous operation of HTTR

Review of Japan's power generation scenarios in light of the Fukushima nuclear accident

Proposal of a plutonium burner system based on HTGR with high proliferation resistance

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