Hazardous Area Classification (HAC)


Gases, vapours, mists and dusts can all form explosive atmospheres with air. Hazardous area classification is used to identify places where, because of the potential for an explosive atmosphere, special precautions over sources of ignition are needed to prevent fires and explosions.

Hazardous area classification should be carried out as an integral part of the risk assessment to identify places (or areas) where controls over ignition sources are needed (hazardous places) and also those places where they are not (non-hazardous places).

Course Objective

Upon completion of the course participants will be able to:

  • Explain the purpose of HAC
  • Understand the basics of IEC and IP codes which are relevant
  • Explain the methodology of performing an HAC
  • Understanding the preparation of HAC schedule
  • Understanding the preparation of HAC diagrams
  • Identifying the correct electrical and mechanical instruments/equipment confirming to HAC
  • Identifying HAC non-conformance installation in site/plant

Course Content

  • Introduction to Process Safety
  • Introduction to ATEX directive
  • Flammable atmospheres
  • Introduction to IEC code and IP 15
  • Classification of hazardous zones
  • Identifying hazardous inventory
  • Identifying release sources
  • Zone classification
  • Identifying temperature class
  • Managing installations at hazardous zones
  • Preparation of hazardous area drawings
  • Operational requirements
  • Maintenance requirements

Course Details

Target Audience Senior Management, Departmental Managers, Engineers, Executives, HSE Officers, and Members of the Occupational Safety & Health Committee
Course Duration 1 Day
Course Delivery English & Bahasa Malaysia.
Lecture, Case Study, Video Presentation and Group Assignments


Dynamic Environ Sdn. Bhd. also known as DESB is one of the pioneers in Malaysia for waste management, shipping and lay up services, and fuel supply services. Our routine complies with accordance...

Read more


Prima Klang Avenue,
B 1-8, Block B, Jalan Kota KS 1,
41000 Klang, Selangor Darul Ehsan


  • Phone: +603 - 3382 1005 / 2005
  • Fax: +603 - 3382 0005