The content of this site has been prepared by the members of the thematic network "S2S - A Gateway for Plant and Process safety". Since the conditions of use are beyond our control we disclaim any liability, including patent infringement, incurred in connection with the use of these products, data or suggestions.

The thematic network S2S is a European Community Project carried out in the "Competitive and Sustainable Growth" programme and funded in part by contract number G1RT-CT-2002-05092.

Safety Assessment - Evaluation of Unexpected Reactors



Most incidents involving chemical reactions occur outside the reactors. An analysis from the US Chemical Safety Board shows that only 25% of the reactive incidents occur in the reactor:





The S2S training & assessment tool for unexpected reactors aims to identify how reactive chemical hazards can exist in process units or plant equipment outside the reactor. It was developed using information from several hundreds of such incidents.


The tool generates discrete questions depending on the equipment and properties of your process. These address potential hazards and explain the likely mechanisms. It is applicable both to batch, semi-batch and continuous processes and assumes that the user has previously identified/characterized the reaction hazards through literature studies, experiments or the S2S assessment methods.


Before using this tool, first use the other S2S tools to asses the general chemical reactivity hazards and the reactor hazards.


After using the tool, you may be able to recognise a reactor in the the below picture, inspired by the Belgian painter Magritte.



We recommend that you read the Guidance Document before using the tool. It explains the concepts used by the tool and will help you to understand the possibilities and limitations of the tool.

The tool is an MS Excel workbook that loads automatically on most PCs, but if not, simply download the Excel file to your PC and load it manually. The tool uses macros, so you may need to modify the Excel security settings to medium to allow the execution of macros.



Keywords / Terms

Catalytical (Heterogeneous), Chemical reaction hazards, Decomposition reactions, Heat transfer for chemical reactions, Incompatibility / Reactive interactions, Unexpected Reactors

Related Documents

Copyright by S2S - A Gateway for Plant and Process Safety - All Rights Reserved.
Web site engine's code is Copyright © 2003 by PHP-Nuke. All Rights Reserved. PHP-Nuke is Free Software released under the GNU/GPL license.
Page Generation: 0.106 Seconds