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大強度陽子加速器計画,1-MW核破砕中性子源を構成する大型重量機器の搬入計画と据付実施記録

Planning and implementation on transportation of large and heavy components of 1-MW spallation neutron source for Japan Proton Accelerator Research Complex (J-PARC)

高田 弘; 加藤 崇; 神永 雅紀; 夏目 弘昭; 星野 吉廣

Takada, Hiroshi; Kato, Takashi; Kaminaga, Masanori; Natsume, Hiroaki; Hoshino, Yoshihiro

大強度陽子加速器計画(J-PARC)の物質・生命科学実験施設に設置する1MW核破砕中性子源ステーションを構成する機器・設備は重量機器で構成し、ミリメートルレベルの高い設置精度,千分の1の水平度を確保することが求められることが特徴である。このような要件を考慮した据付工程を立案するとともに、実際に、重量が50トンを超え、車両積載幅が10m以上で高さが10mに近い大型機器の搬入・据付を実施し、手順の妥当性の見通しを得た。この大型重量機器の搬入に際しては、輸送用道路の構造条件を満足させ、かつ周辺の干渉物を一時的に退避させる処置を講じる必要が生じたため、事前に綿密に搬入方法を検討した。本書は搬入計画立案と据付実施の記録について報告するものである。

We have planned an installation sequence of large structural components of the 1-MW spallation neutron source station with a high accuracy of an unit of mm with respect to the designed position and a tangential inclination of 1/1000 to horizontal level in Materials & Life Science Experimental Facility (MLF) under the Japan Proton Accelerator Research Complex (J-PARC). We have also carried out transportation and installation of some of structural components having a weight of heavier than 50 ton with a width of over 10 m and a height near 10 m and obtained perspectives to fulfill installation of whole components as designed sequence. In order to implement the surface transportation of such components to the construction site, we have carefully made a planning of the transportation, considering the structural strength of the bridge on the way to the site and temporal removal of structural interferences along the road.

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