HAZARDOUS & NON HAZARDOUS STATIC CONTROL

 

WHAT IS THE DIFFERENCE? WHY DO WE SEPARATE HAZARDOUS & NON HAZARDOUS AREA APPLICATIONS

 

Most industrial applications and processes that require some form of static electricity control, earthing and bonding, surge protection or lightning protection can be identified as occurring within a Hazardous or Non Hazardous Classified Area. A Hazardous Area is simply an area that contains a flammable or combustable substance. A Non Hazardous Area is identified as not having a flammable or combustable substance.

 

Hazardous Areas and the electrical equipment that can be used within them including static electricity control, earthing and bonding, surge protection or lightning protection equipment, must meet appropriate Australian & New Zealand regulations and standards. The regulations and standards that apply to a Hazardous Area may not or do not apply to a Non Hazardous Area. In relation to static electricity control, earthing and bonding, surge protection or lightning protection equipment, there are particular types of equipment that are designed specifically for Hazardous Areas. These types of equipment require IECex certification suitable for the type of Hazardous Area that they will be used in.

 

Non Hazardous Areas and the electrical equipment that can be used within them including static electricity control, earthing and bonding, surge protection or lightning protection equipment must also meet appropriate Australian & New Zealand regulations and standards. However in relation to static electricity control, earthing and bonding, surge protection or lightning protection equipment used in a Non Hazardous Area there is no requirement for IECex certification.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A good example of a similar process that could potentially be within either a Hazardous or Non Hazardous Area is the process of printing.

 

Gravure Printing for instance is a process that is identified as a Hazardous Area process as the material (MEK) used in the fountain or ink well is highly flammable. As such any static electricity control equipment used in this application must be suitable for a Hazardous Area. Most other forms of printing are identified as a Non Hazardous Area process and as such static electricity control equipment that can be used is specific to Non Hazardous Areas.

 

Less obvious processes such as those where combustable dusts are used are often incorrectly specified as Non Hazardous Areas and as a result unsuitable static electricity control, earthing and bonding, surge protection or lightning protection equipment is installed.

 

In practical terms static electricity control, earthing and bonding, surge protection or lightning protection equipment that can be used in Hazardous Areas is often quite specific to the application within a Hazardous Area. This is due in part to this type of equipment having to undergoe significant laboratory testing and simulation from certified testing laboratories such as Sira, Baseefa to ensure that the equipment is suitable to be used in a Hazardous Area prior to recieving IECex certification. In some cases this testing can take 12 - 24 months to complete. 

 

If you require further information in relation to IECex certification please visit the IEC website www.iecex.com or contact us at static@staticelectricity.com.au or +61 3 5977 5920.