Who Classifies Gas Certificates?
One of the most significant concerns in an industrial workplace is the potential risk of fire or/and explosion. However, there are directives that set standards in which aim to control explosive atmospheres. ATEX (ATmosphere EXplosibles) is the name commonly given to two European Directives for controlling explosive environments. IECEX (International Electrotechnical Commission for Explosive Atmospheres) is the certification that all electrical devices are required to go through by the International Electrotechnical Commission to ensure that they meet a minimum safety standard that will determine whether they can be used in hazardous or explosive environments. For the US Underwriters Limited (UL) is a safety organisation who provide products that are to be sold into the marketplace with authentication that are safe for use. Similarly, the Canadian National Standards (CSA) provide products placed in the market or put into service with a safety certification displaying that they are fit for use. However, The Safety integrity level (SIL) is the level of risk-reduction provided by a safety function, or to specify a target level of risk reduction. The certificates provided by both ATEX and Sil are what operators rely on in order to prevent fires and explosions but also to keep all those in industrial workplaces safe.
There are too many workplace hazards to count, however, a hazardous location is stated as an area in which combustible or flammable substance is or has the potential to be in attendance. Hazardous locations are specified by the type of combustible hazard and the probability of it being present. These gradings are determined by classifications set by the National Electric Code (NEC) in the United States and the International Electrochemical Commissions (IEC) internationally. These are defined in two ways; either Class/Division system in Northern America or Zones/Groups internationally.
Class and Divisions
Division 1: There is a likelihood the hazard is present during normal operating conditions
Division 2: The hazard is present during abnormal conditions (i.e., In the event of a spill or leak)
Class 1: Gas
Class 2: Dust
Class 3: Fibres
Zones and Groups
Zones: identify the possibility for a hazard to be present
Zone 0: The hazard is in attendance continuously and for a prolonged period of time
Zone 1: There is a chance that the hazard is in attendance but at normal operating conditions
Zone 2: The hazard is not likely in attendance in normal conditions for an extended period of time
Groups: Identify the particular type of hazard
Group 1: Mining Industry hazard specific
Group 2: Have a group identifying the hazard is gaseous in nature
A: Methane, propane, and other similar gases
B: Ethylene and gases or those that pose a similar hazard risk
C: Acetylene, hydrogen or similar hazards
Group 3: Dusts and other groups by size of the particle and type of material
Understanding the Certification Logos
The logos located on the equipment identify who or what association has tested and assessed the equipment, ensuring its safety based on set standards. Many associations will certify equipment as being explosion proof, clarifying that any ignition will be contained within the device and will not pose a threat to the outside environment. This action is intrinsically safe, thereby stopping the device from creating a spark that may lead to an explosion in a hazardous environment.
Why Certificates are important
Although it is hard to identify all classification, to ensure that equipment has been certified safe, it is essential to look for familiar logos as a primary sign the equipment is safe and won’t pose a threat to the environment. Certificates allow for easy visual for the operator to not only ensure that the devices work correctly but also protect all those in the hazardous environment its set to measure.