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- Material Type
- 規格・テクニカルリポート類
- Author/Editor
- 菊地 直樹飯村 理人高橋 有紀大森 栄一山内 孝道
- Publication Date
- 1997-09
- Publication Date (W3CDTF)
- 1997
- Alternative Title
- Pressure analysis in ventilation ducts at Bituminization Facility
- Periodical title
- PNC TN8410 97-310
- Target Audience
- 一般
- Note (General)
- 出版タイプ： NA本報告書は、アスファルト固化処理施設で発生した火災・爆発事故の原因究明に係わる各種解析評価作業の一環として実施したセル換気系排気ダクトにおける圧力伝播解析の結果と、本解析に使用する換気系爆発解析コードEVENT84による解析の信頼性の確認を目的として実施した検証計算の結果をまとめたものである。検証計算では、原研で実施したセル換気系実証試験の試験データとEVENT84による解析結果との比較・検証を実施し、安全側の解析結果が得られたことでEVENT84の信頼性を確認した。アスファルト固化処理施設のセル換気系排気ダクトにおける圧力伝播解析では、事故時の爆発規模の推定を目的として、当該ダクトの破損状況とダクト各部の圧力解析結果の照合を実施した。その結果、ダクトの破損状況を定量的に説明するには至らなかったが、一番損傷の大きいダクト下流側での局所的な圧力上昇は起こり得ることが分かった。Pressure analysis in cell ventilation ducts at bituminization facility where the fire and explosion accident occured was carried out. This report also describes the results of bench mark calculations for computer code EVENT84 which was used for the accident analysis. The bench mark calculations were performed by comparing the analytical results by EVENT84 code with the experimental data of safety demonstration tests of ventilation system which were carried out by JAERI. We confirmed the applicability of EVENT84 code with the conservative results. The pressure analysis in cell ventilation ducts at bituminization facility were performed by comparing the analytical results of duct pressure by EVENT84 code with the yield stress of destroyed ducts by explosion, in order to estimate the scale of explosion. As a result, we could not explain the damage of ducts quantitatively, but we found the local pressure peaks analytically in downstream ducts where the serious damages were observed.
- Source
- /PNC-TN8410-97-310.pdf （fulltext）