Welcome to the HSE Training and Events eBulletin

The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) require employers to control the risks to safety from fire, explosions and substances corrosive to metals.

HSE runs three training courses to help employers comply with DSEAR. We've recently updated the content to specifically reflect different sources of hazard.

Click on the following links for our new course dates and to find out more!

While there is some overlap between the courses delegates can attend one or more courses depending on which area of DSEAR they are interested in.

You may also be interested in....Quadvent 2

Under the requirements of the DSEAR, an organisation must identify and classify areas of the workplace where explosive atmospheres may occur.

Historically, the gas cloud volume V_z required for area classification had to be estimated using a methodology defined in BS EN 60079:10-1 (2009). This methodology has no basis in science and has frequently been shown to produce unnecessarily conservative results.

In 2011, HSL developed a scientifically-based mathematical model of a flammable gas jet to provide more realistic estimates of V_z for releases of flammable gases in ventilated enclosures or outdoors.

This model formed the basis of Quadvent, a quick and easy-to-use software tool which calculates V_z for any situation in which the flammable gas cloud volume or extent of the flammable cloud needs to be determined for a release of pressurised gas.

Quadvent 2 is a new, updated product which improves on its predecessor by allowing for a wider range of applicability including different fluid types and an improved interface. The software now includes a model for buoyant gas releases and pressure liquefied gases, such as LPG.

Request a free demo of Quadvent 2 by emailing quadvent@hsl.gsi.gov.uk

If you are interested in attending one of our courses, but the advertised dates are not suitable, please do drop us an email at training@hsl.gsi.gov.uk