Speaker
Description
The Japan Society of Mechanical Engineers (JSME) developed a fusion standard for superconducting magnet structure based on ITER design and 1st version was published in 2008. Basic concepts and features of this standard is summarized as follows;
(1) Quality class is equivalent to general structures or general pressure vessels, which are fabricated by the American Society of Mechanical Engineers (ASME) Sec. VIII-div.1 or Sec.III ND because of non-safety components and inherent safety nature in fusion reaction.
(2) JSME standard basically adopts the “design by analysis” used in ASME Sec. VIII-div.2 and Sec. III NB, considering 3D structures under static/cyclic electromagnetic loads. For pressure, however, the standard follows ASME Sec. VIII-div.1.
(3) The standard consists of existing codes & standards for general structures and newly developed standards, taking into account unique features of SC magnets, manufacture experiences, and extensive R&D on cryogenic structural materials.
(4) Rules for material is unique since design yield and tensile strength from RT to 4K and design fatigue curve at 4K are given in the standard.
(5) Rules for HIP diffusion bonding process for fabricating the radial plate segments is added in the 2017 edition..
(6) Rules of conformity assessment and quality assurance are included as a part of the standard.
The presentation provides main examples of the standard articles implementing above concept dedicated to safety and structural characteristics of fusion energy devices. In addition, future plan will be reported to develop a structural standard for full set of major components about JA-Demo tokamak fusion device and collaboration of JSME and ASME for this activities.
| Technical Categories Addressed | Other Systems |
|---|---|
| Speaker's title | Mr |
| Speaker's email address | tada.eisuke@qst.go.jp |
| Country/Int. organization | Japan |
| Affiliation/Organization | QST |
