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- W2091870387 abstract "A 300-mm butterfly valve in an industrial oxygen pipeline ignited during system start-up, resulting in three fatalities. The valve was apparently stuck and the operators used pipe tongs to open it. Afterwards, hand wheel torque required to open identical valves when subjected to 35-bar pressure difference was measured. Three test valves opened easily but a high torque was required with the fourth one. This was due to a damaged PTFE sliding layer of the free shaft main bearing. Several possible causes of the fire were identified. Frictional heating could have occurred at a foreign body wedged between the disc and valve body or Fire Safe seal, or at damaged free shaft bearing. The heated metal parts would have ignited the PTFE seat or coating of the free shaft bearing, respectively. In addition, ignition of the Fire Safe seal or valve body by particle impact could have occurred due to contaminants carried by the oxygen flow or due to particles detached from the wedged foreign body." @default.
- W2091870387 created "2016-06-24" @default.
- W2091870387 creator A5042446521 @default.
- W2091870387 date "2008-07-01" @default.
- W2091870387 modified "2023-09-27" @default.
- W2091870387 title "Investigation of a large industrial oxygen valve fire" @default.
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- W2091870387 doi "https://doi.org/10.1016/j.jlp.2008.03.002" @default.
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