HSL places cookies on your computer to improve our website. These cookies don't collect information that identifies a visitor and are all anonymous. They are used to measure its performance and to provide enhancements to you while using the site.
Enabling a Better Working World

Enabling a better Working World

Mobile Nav Mobile Basket

You are not logged in

Hazardous Area Classification

Book Course

HSL is to run a 1 day course on Hazardous Area Classification.

6 December 2018

Other available dates: email us to book

28 February 2019


HSE Training runs three different courses to help employers comply with the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR).  These are:

It is intended that delegates select which course is the most relevant to them rather than attending more than one.


The Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) require that areas where accidental releases of dangerous substances could occur are identified and classified according to the likelihood of the formation of a flammable atmosphere. Within classified areas sources of ignition should be controlled. This course is designed to provide delegates with the knowledge to carry out straightforward hazardous area classification in accordance with commonly used standards or to act as an intelligent customer when contracting others to deliver this role.

The course covers     CPD Certified

  • The legal duties
  • The classification of hazardous substances
  • The relevance of the physical/chemical properties of gases, liquids, dusts and mists to area classification
  • The classification of hazardous areas by zone, including the concept of a zone of negligible extent (NE)
  • How ventilation is taken into account when determining the hazardous zone and the concept of Vz
  • A recently developed scientific approach to area classification
  • The national and international standards and guidance commonly used in area classification including practical examples of their use
  • An introduction to equipment for use in explosive atmospheres
  • Primarily this course covers gases, vapours and liquids, with some discussion of dusts.  Those interested solely in dusts hazards should attend the DSEAR - Controlling Dust Explosion Risks course.

Who should attend

This course is suitable for all those who may be asked to carry out hazardous area classification as part of a DSEAR assessment including process safety and electrical engineers and health and safety practitioners.


The course will be run at the HSL laboratory in the spa town of Buxton. Buxton is in the heart of the Peak District and has good links to mainline train stations and Manchester International Airport.

Details of hotels in the Buxton area can be found at


The cost of the course is £625 per person (includes course notes, lunch and refreshments).

Book Course



Please note the invoice option is not available within 4 weeks of the course date, or for overseas customers.  If you are selecting the invoice option for payment, it will be mandatory to input a purchase order/reference number as we are unable to process booking forms without this.

For further dates and additional information email: or contact the Training & Conferences Unit
at HSL directly on +44 (0)203 028 3704.

Back to HSE Health & Safety Training Courses

Back to the top