By Roy E. Sanders
During this easy-to-understand publication, the writer, drawing on his decades of useful event, addresses the issues skilled with administration of switch in chemical vegetation. He cites examples of the results of the inadequate overview of adjustments applied to resolve one challenge, which then create another.Unwise chemical plant transformations are one of many significant reasons of chemical plant injuries and all proposed sturdy rules concerning swap require cautious overview and research ahead of 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 ebook highlights the incidents of unexpected, bad results of unwise switch inside of chemical and petrochemical and petroleum refineries. presents a sequence of brief, descriptive accidentsSupplemented with sketches and shiny photosOffers useful sections on mechanical integrity, administration of switch, and incident research courses
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Extra info for Chemical Process Safety: Learning from Case Histories, Second Edition
A lightweight "off-the-shelf fiberglass tank about 8 ft. (2,2 m) in diameter and 8-ft. 2 m) high was installed along with the associated piping and controls. The purpose of this modification was to receive, store, and meter out acid to control the pH of the effluent. The atmospheric closed top design tank had two top nozzles.  During normal operation the vessel would receive acid via an in-plant pipeline. It was also equipped to receive acid via tank trucks (see Figure 2-6). One of the top nozzles 6 in vent/ overflow line 2 in fill line Water Fume scrubber FIGURE 2-6 Tank truck unloading acid just before failure.
The 30-inch (76 cm) diameter air dryer top head suddenly tore from the shell. The explosive release of air violently propelled activated alumina desiccant throughout the building. A large window panel about 6 ft. (1,8 m) by 8 ft. 4 m) blew out of the brick wall of this large building into a road. Luckily no one was in the building when the vessel ruptured! There were no injuries. ) These creative individuals had set up a scheme to purge through the top of the air dryer and out of a partially opened ball valve on the lower piping.
The bottom plate was found in the big hole in the ground. A fire occurred and was quickly extinguished. Fortunately the only injuries were a bruised knee and an eye irritation. On the previous Friday, a tank of an organic solvent product was found to be high in acidity and was out of spec in color. The solvent was a nonflammable cleaning fluid used to clean grease and soil from common metals. The solvent contained an inhibiting stabilizer (nitro-methane) that is added to keep the fluid from corroding metals.