Dynamic elaboration on the Art & Science of Hazardous Area Protection
A personal view about Hazardous Area Codes Making , Specification , Testing & Certifying process
The DIRECTIVE 94/9/EC has been replaced by a new DIRECTIVE 2014/34/EU. The old directive was valid till 19th of APRIL 2016.
(Click on the link to get more details )
Three important differences between IECEx and ATEX
1. IEC Certifies Products & Also Provides Services & carry out training of Staff working in Hazardous Area .
ATEX is not doing any of the above mentioned activities
2. For the Products to be used in Zone 2 (Equipment cat.3) , IECEx requires a full-fledged certificate issued by an independent Certification Body.
ATEX ‘s requirement is a declaration by the manufacturer
3. All IECEX certificates can be viewed and verified online free of CHARGE
IEC has published a comprehensive guide about the various elements of IECEX & ATEX (http://www.iecex.com/docs/IECEx_01A_Ed2%200.pdf)
Role of UL (Underwriters Laboratories )
UL have a consensus-based standards development process through its Standards Technical Panels (STP). A STP is a group of individuals, representing a variety of interests connected to the UL Standard, formed to review proposals for new Standards or revisions to existing Standards.
This process for consensus standards development, has been approved by the American National Standards Institute (ANSI). The intent is that standards developed under the STP Process will be designated as ANSI standards. (http://ulstandards.ul.com/about/understanding-standards/)
These codes provide definite guide lines for all aspects of Electrical & Non-Electrical equipment, manufactured to operate safely in Hazardous Areas.
Once the legislation are known and the manufacturers start the necessary process to produce the hazardous-area-safe electrical ( & non electrical ) equipment then comes the most important step.
Authenticity/ Clarity & Proof of the Claims of the Manufacturers in support of their produced equipment .
“the proof of the pudding is in the eating”
Instead of telling the customers to ‘taste’ the equipment by buying it , installing it and thus testing it. The manufactured Equipment is presented to the ‘tasters’ which are
THE TESTING & CERTIFYING LABORATORIES and FACILITIES which have the ability, testing facility, testing equipment ,engineering staff and a certificate
(of qualification for hazardous area equipment testing )
to Verify the claims of the manufacturers and endorse it by issuing a STANDARDS COMPLIANCE CERTIFICATE. (Of course, all this testing procedures are quite expensive)
Certificate of Compliance , for an electrical or non-electrical equipment certainly ADDS to the overall commercial aspect of that equipment.
So… the the Hazardous Area Electrical Equipment are :-
Either (at least)
– ATEX Compliant :-The document will consists of a DECLARATION OF CONFORMITY & EC-TYPE EXAMINATION CERTIFICATE
– IECEx Certificate:-The document will be a “Certificate of Conformity “.
Examples of the Certifying Bodies / Notified Bodies (Ex Domain):-