Objective
The aim of the project is to present a 'European triggered barrier' to fill the existing gap in the engineering aspects of explosion protection. This would allow effective protection of working areas which today must still be regarded as particularly at risk from explosions.
Engineering measures are taken in underground mines as protection against coaldust and firedamp explosions, the most common system being the passive water barrier.
Water barriers are currently in use e.g. in France, Britain, Germany, Poland and Australia and pit trials have been carried out in the USA and China. In the South African deep coal-mining industry, too, stonedust barriers are shortly to be replaced by water barriers.
Passive water barriers have proved effective in practice in many emergency situations. Their performance depends on the blast pressure, a pressure in excess of 50 mbar being required to destroy the water trough or initiative water dispersal. Passive water barriers are not effective against weaker explosion, in particular in the early state of development, while they are still deflagrations. Active - or triggered - barriers were developed to fill this gap in protection arrangements.
Triggered barriers consist basically of three main components:
- a sensor;
- control, monitoring and activation electronics;
- the disperser system.
In the European Community, such barriers have been developed in Belgium, France, Britain and Germany.
The systems differ considerably in design. Each in itself is capable of functioning and is to some extent in actual service.
The European Commission's Working Party on Flammable Dusts reviewed all triggered barriers so far developed in the mid-1980s. This review formed part of the report (Doc. No 5147/89) on Measures to reduce the explosion and fire risk in auxiliary-ventilated workings and to improve the protection of personnel in the event of explosion and fire in coal mines which was approved at the meeting of the Safety and Health Commission for the Mining and Other Extractive Industries on 20 December 1989. Section 2.3.3 'Suggestions for research, development and studies' of this report states that:
Research and development work on different systems of triggered barriers and other devices to combat incipient explosions should be continued, in particular with a view to reducing costs and facilitating maintenance.
Research into designing a European triggered barrier which has optimum characteristics, based on a study of the characteristics of the different systems, should be done.
The purpose of the proposed project is to produce a 'European triggered barrier'. This will involve investigating the compatibility of the individual components of the systems developed in the various countries with the aim of minimising costs without impairing the level of protection attained. The availability and supply of individual components will also be investigated.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding Scheme
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Coordinator
44137 Dortmund
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.