Safe Disposal And Containment Of Emergency Relief Streams

2 Safe Disposal And Containment Of Emergency Relief Streams 

Chemical reactors and pressure vessels must be protected against an intolerable pressure rise by the installation of safety devices. If measuring and control devices are not sufficient to control a runaway reaction, then the only remaining protective measure is, as discussed in the previous section, to provide a pressure relief system, such as a bursting disk or safety valve. 

In a next step a safe disposal of the relief stream has to be taken care of. Finally, substances with extremely hazardous properties must either be collected in a catch tank or further conveyed to a suitable treatment system for their final disposal. 

The following paragraphs will list criteria to be assessed in order to ensure the correct design of all relevant pipes as well as present the fundamental design recommendations for a few kinds of catch systems. 

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