Article ID Journal Published Year Pages File Type
587243 Journal of Loss Prevention in the Process Industries 2007 8 Pages PDF
Abstract

Solvent transfer pipes in pharmaceutical plants can be susceptible to thermo-hydraulic rupture. This mode of failure, arising from the restraint of thermal expansion of a trapped liquid, can lead to serious safety and environmental consequences. In the paper, an approach to eliminate the problem by the inclusion of short lengths of flexible elastomer hose in conventional stainless steel pipelines is explored. As atmospheric heating is unpredictable, a stochastic thermal model is used to calculate the distribution in temperature rise in the trapped solvent that may be reasonably expected. From this temperature rise, the pressure developed in the solvent and the corresponding membrane stress in the pipe wall can be found. By defining a maximum acceptable stress level, the fractional length of hose that must be incorporated in the system can be determined.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Health and Safety
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