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The human factor in licensing and operating the next generation of nuclear plants
As human factors specialists working at the intersection of human performance and nuclear operations, we are witnessing one of the nuclear sector’s most significant transitions in decades. The emergence of small modular reactors, microreactors, and other advanced designs is reshaping the industry’s landscape. Digital instrumentation and controls, passive safety systems, and increased automation are creating opportunities for greater safety margins and more flexible operation. These same features also fundamentally redefine what it means to “operate” a nuclear plant. Interactions among human roles, automation, and passive systems shape how people maintain awareness, exercise judgment, and intervene when necessary. These developments affect both operational realities and the regulatory foundations on which nuclear safety is built.
Ikuo Ioka, Yoshiyuki Inagaki, Kazuhiko Kunitomi, Yoshiaki Miyamoto, Kunihiko Suzuki
Nuclear Technology | Volume 105 | Number 2 | February 1994 | Pages 293-299
Technical Note | Heat Transfer and Fluid Flow | doi.org/10.13182/NT94-A34930
Articles are hosted by Taylor and Francis Online.
A coaxial double-tube hot-gas duct with an internal insulation layer is to be used for the High-Temperature Engineering Test Reactor (HTTR), a gas-cooled reactor designed by the Japan Atomic Energy Research Institute. A full-scale simulation of part of the hot-gas duct was constructed to verify its structural integrity. No hot spot was detected on the inner tube under HTTR operation conditions after 7700 h. Natural convection was negligible in the internal insulation layer. An experimental correlation of the effective thermal conductivity for the internal insulation layer was also obtained.
