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zone model

Hazardous Areas and the selection of suitable components

Which components may be used in hazardous area’s? When parts of an area of installation are classified as hazardous areas, it is not always easy to select the appropriate components…
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Hazcalc Release Models

Which release models are available within Hazcalc?

These downloads gives an overview of the release models that are featured with Hazcalc.
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Auto Ignition Temperature

How are the AIT of substances and T-class of equipment related?

Auto Ignition Temperature and T-Class The Auto Ignition Temperature of substances and the Temperature Class of Equipment are related. The Auto Ignition Temperature of substances is the lowest temperature in…
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Hazcalc - Explanation on hazardous area classification

What is Hazardous Area Classification?

Explanation on hazardous area classification Hazardous area classificatie is related to the prevention of explosion risks on a site, factory or installation. The first step in the systematic approach on…
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Hazcalc - Download / export assessments

Can i download/export assessments?

All assessments made with Hazcalc can be downloaded / exported directly to a Micrisoft Excel formatted xlsx file. The values of this file can be copy-paste to an Importmodule and…
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Vaper Cloud Explosion VCE

What means the Pmax of Substances?

The Pmax of a substance is the maximum pressure that is monitored during ignition of substances at different concentrations in a laboratory test facility. Tests are performed according to EN…
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LEL and UEL in relation with the Minimum Ignition Energy

What means the LEL and UEL of substances?

LEL and UEL in relation with the Minimum Ignition Energy LEL: The Lower Explosive Limit (LEL) is the lowest concentration of a gas, vapor or dust that will burn in air.UEL: The…
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Static electricity

How are the MIE and gasgroup related?

Relation between MIE and gasgroup of equipment Equipment that is certified for used in hazardous areas must be Ex certified according to the applicable standards. Substances which create a hazardous…
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Minimum Ignition Energy

What means the MIE of substances?

The MIE of a substance is the Minimum Ignition Energy needed in order to ignite a flammable substance with air or oxygen, measures by a standard procedure. Depending on the…
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Is the toxic effect of ammonia a larger risk than the risk on explosion?

Ammonia Storage

Is the toxic effect of ammonia a larger risk than the risk on explosion? Quite often we get the question whether it is necessary to classify ammonia storage vessels and…
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AIT of substances?

What means the AIT of substances?

Auto Ignition Temperature The auto-ignition temperature or kindling point of a substance is the lowest temperature in which it spontaneously ignites in a normal atmosphere without an external source of ignition, such as a flame or…
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