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I NTRODUCT I ON HAZARDOUS LOCATION DATA

Hazardous Location Equipment Certification North American System

IECEx Certified Equipment Scheme. The IECEx System is one of four international conformity assessment systems operated under the International Electrotechnical Commission (IEC) – Conformity Assessment Board (CAB). The objective of the IECEx is to facilitate international trade in equipment and services for use in explosive atmospheres, while maintaining the required level of safety. The IECEx System operates three International Certification Schemes: • IECEx Certified Equipment Scheme • IECEx Certified Services Scheme • IECEx Certificate of Personal Competence Scheme IECEx Certified Equipment Scheme accredits certification bodies (Ex CB) to perform the evaluation and testing of equipment for explosive atmospheres (Ex Equipment) and the issuing of IECEx Certificates of Conformity (CoC). The Ex CBs are regularly audited as part of the “peer assessment’ process to confirm they continue to follow the IECEx rules and testing procedures. The IECEx follows various ISO/IEC 17000 series of Standards such as ISO/IEC Guide 17067 “Conformity assessment - Fundamentals of Product Certification and guidelines for product certification schemes” and are defined as a 3rd party conformity assessment system. Should there be any questions or discrepancies on how Ex CBs are applying the Standards, IEC TC 31 is asked to investigate and where necessary issue a “formal Interpretation sheet”. Separate to this process, IECEx can issue “ExTAG Decision Sheets” which record a decision on how all ExCBs will apply a certain requirement of the Standard and provides a quick means to achieve a resolution for industry, instead of waiting for the standard to be revised/updated. An IECEx Certification of Equipment has three parts: • Quality Assessment Report (QAR) which assesses and monitors the manufacturer’s processes • Ex Test Reports (ExTR) documenting the testing performed. • IECEx Certificate of Conformity (CoC)

While CSA, FM and UL Standards are similar, some technical differences in specific product standards do exist. While Canada has one National Standard for each type of equipment, the US System can have multiple Standards. In the US there is one ANSI Standard and there can be various non-ANSI versions. In the US, the AHJ has discretion over which Standards they accept. For equipment suitable for use in hazardous locations or explosive atmospheres, there are two approaches. Products may be certified to either Class/Division Standards or IEC Zone based Standards. The UL Standard Technical Panel (STP 60079) and CSA Integrated Committee on Hazardous Location Products (ICHL) are responsible for adopting the IEC 60079 Standards which includes adding National Deviations to address specific safety issues and accommodate electrical Code requirements. UL STP 60079 and ICHL work closely to minimize any deviations that would cause technical barriers to trade between the two countries. Similarly, ICHL has removed technical barriers between the Class/Division standards wherever possible. NOTE: Some differences remain between Canadian and US in the standards for wire and cable, plugs and receptacles and cable glands for use in hazardous locations due to differences in the applicable Electrical Codes The certification of equipment using Class/Division or CSA/UL 60079 Standards for Zones includes testing and approval to all applicable “ordinary location” Standards. (For example, an empty explosionproof outlet box would need to meet the standards for general requirements, threading in addition to the hazardous location requirements.) Both Canada and the US certification system follows the ISO/IEC Guide 17067 “Conformity assessment - Fundamentals of Product Certification and guidelines for product certification schemes” and are defined as 3rd a party conformity assessment system. Acceptance of product certification is up to the “Authority Having Jurisdiction” (AHJ) responsible for electrical installations in a specific location.

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