HarsNet    THEMATIC NETWORK ON HAZARD ASSESSMENT OF HIGHLY REACTIVE SYSTEMS
             
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What is HarsNet?

The objective of the HarsNet thematic network is to create an extensive forum within which universities, research centres and industries collaborate to develop and disseminate fundamental knowledge that can be used for hazard assessment of reactive systems, in order to improve the global safety of the chemical industry.

The main objectives of HarsNet are a consequence of the urgent need to introduce hazard assessment techniques for reactive chemicals into the normal working procedures of small and medium enterprises. For this reason a number of project tasks have been developed, each one of them related to a different aspect of chemical safety.

 

HarsBook

HarsBook consists on a guide for experts and it is based on the accumulated and shared experience of the partners. It describes the best methods currently available for predicting, assessing and minimising exothermic reaction hazards. It is structured in a way that covers all the steps related to a chemical process, from the research of information to the storage of unstable substances. It is a reference resource that can be used in relation to other activities of HarsNet, including preparation of HarsMeth. HarsBook is also available in a printed version published by Dechema.

HarsMeth

The aim of HarsMeth is to provide the SMEs with a methodology for the hazard assessment of chemical processes. It provides assistance for the safety assessment of batch and semi-batch processes in an easy structured way by using basic rules and methods. The main part of HarsMeth represents a short cut procedure that can be used as an interactive on-line tool. Next to it, a document containing all short cut checklists is available. The assessment is based on safety data entered by the user and gives general hints concerning hazardous process conditions.

HarsEdu

The goal of HarsEdu is to provide a critical review of existing chemical safety training courses that are offered in Europe. Links are provided so that users (and SMEs in particular) will be able to find out where to obtain information about the courses they may require. Further, it is an aim of HarsEdu to provide the fundamental knowledge needed to become aware of the possible process dangers. This is achieved through the provision of a variety of training material in the form of PowerPoint presentations. The most basic requirements for chemical safety are described and explained in a structured manner.

HarsBase

HarsBase is a collection of links to chemical reaction safety related data such as flash points, heat capacities, etc. An overview of content and value of each link is given either in a short abstract or, in more concentrated form, in a table. Additionally, a page is presented describing different calorimeter types and those that are commercially available. The information provided includes technical data like working principles, temperature and pressure ranges as well as an indication of advantages, disadvantages and requirements for operation. It also includes a collection of literature references called HarsLibrary, where additional information can be found on books and articles concerning chemical safety.

HarsRes

The aim of this task is to propose and promote new research projects, in order to support the proposed methodologies and to increase the knowledge about all the subjects related to the thermal hazards of chemical processes. A direct result is the AWARD (Advanced Warning Against Runaway Disposal) project that has been running since June 2001. This is an EC funded research program for the early detection of runaway reactions: HarsNet partners are carrying out research into new systems and technologies that can help to avoid the loss of control of such chemical processes.

HarsSMEs

HarsSMEs is the interface between the HarsNet partners and the chemical industry. As part of this task, national forums, conferences and individual meetings are supported. The objectives of these activities are to create a wide European forum for the exchange of knowledge and technological development, and to establish a platform to disseminate the work done by the network, where the chemical industry has the opportunity to explain their problems and concerns.

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Keywords: “desktop method” “prediction techniques” “vent sizing” accident accidents accumulation adiabatic ADT ADT24 assessment batch calorimeter calorimetry chemical chemicals chemistry combustion critical decomposition design enthalpy exotherm explosion flammable hazard hazards ignition incident incidents industrial inherent intrinsic isoperibolic isothermal kinetic kinetics measure measures MTSR network onset prevention rate reaction reactions reactivity reactor risk runaway runaways safety screening Semenov semi-batch stability Stoessel storage synthesis thematic thermal thermodynamic TMR unstable