Explosion protection

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Explosion protection is used to protect all sorts of buildings and civil engineering infrastructure against internal and external

of pressure, which is a dominant characteristic of the blast load, is fully beyond control.

Techniques

Avoidance

Avoidance makes it impossible for an explosion or deflagration to occur, for instance by means of suppressing the heat and the pressure needed for an explosion using an aluminum mesh structure such as eXess, by means of consistent displacement of the O₂ necessary for an explosion or deflagration to take place, by means of

, or by means of consistent elimination of ignition sources.

Constructional

Constructional explosion protection aims at pre-defined, limited or zero damage that results from applied protective techniques in combination with reinforcement of the equipment or structures that must be expected to become subject to internal explosion pressure and flying debris or external violent impact.^[2][3]

Method selection

The technology of protection

membrane type vents can provide a leak tight seal more readily in most cases; have a relatively broad tolerance on their release pressure and are more readily incorporated into systems with discharge ducts.

There are several fundamental considerations in the review of a system handling potentially explosive dusts, gases or a mixture of the two. Dependent upon the design basis being used, often National Fire Protection Association Guideline 68, the definition of these may vary somewhat. To facilitate providing the reader with an appreciation of the issues rather than a design primer, the following have been limited to the major ones only.

Database combustion and explosion characteristics of dusts

The database GESTIS-DUST-EX comprises important combustion and explosion characteristics of more than 7,000 dust samples from nearly all sectors of industry. It serves as a basis for the safe handling of combustible dusts and for the planning of preventive and protective measures against dust explosions in dust-generating and processing plants. The GESTIS-DUST-EX database is produced and maintained by the Institute for Occupational Safety and Health of the German Social Accident Insurance. It was elaborated in co-operation with other institutions and companies. The database is available free of charge to be used for occupational safety and health purposes.^[5]

See also

• Explosion pressure
• Explosion prevention standards for electrical equipment
• Explosion vent
• Explosives safety
• Inert gas
• Pressure relief valve
• Prestressed structure

References