By Roy E. Sanders
During this easy-to-understand booklet, the writer, drawing on his a long time of functional adventure, addresses the issues skilled with administration of swap in chemical crops. He cites examples of the results of the inadequate evaluate of adjustments applied to unravel one challenge, which then create another.
Unwise chemical plant alterations are one of many significant reasons of chemical plant injuries and all proposed solid rules concerning switch require cautious evaluate and research sooner than implementation. Illustrated with many case histories this booklet highlights the incidents of unforseen, bad outcomes of unwise switch inside chemical and petrochemical vegetation and petroleum refineries.
Illustrated with many case histories, this publication highlights the incidents of unexpected, bad outcomes of unwise switch inside chemical and petrochemical and petroleum refineries.
Provides a sequence of brief, descriptive accidents
Supplemented with sketches and brilliant photos
Offers sensible sections on mechanical integrity, administration of swap, and incident research courses
Read or Download Chemical Process Safety: Learning from Case Histories, Second Edition PDF
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Additional info for Chemical Process Safety: Learning from Case Histories, Second Edition
9, Dec. 1995: pp. 42–49. 30. Covello, V. , P. M. Sandman, and P. Slovic, Risk Communication, Risk Statistics, and Risk Comparisons: A. , 1988. 31. Cohen, B. and I. Lee "A Catalog of Risks," Health Physics 36, June 1979: pp. 707–22. 32. Toscano, Guy A. S. , April 1997, pp. 38–41. " 33. "Risk and the CPI," Chemical Engineering 102, no. 2, Feb. 1995: pp. 20–23. 34. Lees, Dr. , Loss Prevention in the Process Industries Hazard Identification, Assessment and Control, 2d ed. : Butterworth-Heinemann, 1996, pp.
For over 20 years the tank successfully operated with a nitrogen pad to reduce moisture intrusion and a simple hinged breather vent to provide overpressure and vacuum protection. The modification (installed and completed just three days prior to the failure) provided a vent compressor and a new state-of-the-art nearly zero leakage pressure/ vacuum device and some unique piping features. See Figure 2-14, which shows impulse block valve No. 4 and the vent check valve No. 2. Investigators established that the root causes of the incident were: • Failure to train employees on proper operation of the modified tank vent system.
7] Unfortunately the temporary filter was placed between the compressor and a lowsuction pressure trip. The compressor suction pressure was reduced to a vacuum and air intruded into the system. The air reacted within the system. A decomposition occurred further downstream and a major fire caused many months delay in the startup of this unit. Afterthoughts on Plant Fire Just before a plant startup lots of details must be reviewed, and there are pressures to startup on the target date. Therefore it is not surprising that some modifications introduced by clever, concerned individuals during this time result in serious unforeseen consequences.