Design of Bolted Flanged Joints Based on Leakage to Achieve Substitution for Asbestos Gaskets

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  • ガスケット非石綿化に対応するための漏洩量を管理できるフランジ継手設計法の検討
  • ガスケット ヒイシワタカ ニ タイオウ スル タメ ノ ロウエイリョウ オ カンリ デキル フランジ ツギテ セッケイホウ ノ ケントウ

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Abstract

Asbestos products including gaskets will be completely prohibited in several years due to their toxicity. In order to solve some difficulties in the substitution for the asbestos gaskets, STOP (Sealing technology of pressure equipments) committee is in the investigation activity. Development of a series of standards is essential to the solution of difficulties, such as new flange joint design methodology that the amount of leakage can be taken into consideration, test method for the sealing behavior of the gaskets, and bolt tightening guidelines for flanged joint assembly. The regulation against the asbestos and the development of the standards including two standards published as HPIS are overviewed.

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