TICKET TO THE GLOBAL MARKET, GLOBAL CERTIFICATION Rudolf Pommé KEMA Quality B.V. Ultrechtseweg 310 6802 ED Arnhem The Netherlands Mario Colpa BACAB SA, member of the BARTEC Group Rue de l'Industrie 19 1450 Sainte-Croix Switzerland Abstract - This joint paper will outline the experiences of a manufacturer and a certification body in their continuous drive to improve the process of global certification. The process can be well defined and control of the process will result in cost savings by avoiding re-testing and faster timeto-market for Ex-equipment manufacturers. New technologies along with globalization result in neverending changes in the petro-chemical industry. Equipment meant for use in potentially explosive atmospheres (Exequipment) is no exception. Certification is an important factor determining the speed and success of those changes. But to date each of the major marketplaces maintains their individual certification requirements. Where the ATEX Directive has led to a harmonized certification scheme for the European Union, certification schemes and standards committees such as IECEx and IEC are a major step towards global certification. Unfortunately global market access with a single Ex-certificate has yet to be achieved. Index Terms — Certification, Test Reports, Certification Schemes, IEC, IECEx, National Differences, National Regulations. I. INTRODUCTION In many countries development of industry has led to national safety regulations. Each of those countries have selected methods of protection best suitable for their situation taking into account the application, environment and state of the art of technology. However within the process of globalization it has become clear that national safety regulations of those countries do not only provide personal safety, but can also form trade barriers. Trade barriers can have a heavy impact on time planning and cost of construction of industrial installations. National safety regulations can become trade barriers when they are not based on the same principles and standards as the safety regulations of other countries. A very effective way of minimizing differences between safety regulations is developing internationally recognized standards and certification schemes. Two well known organizations for international standardization are ISO and IEC. Under the umbrella of IEC certification schemes such as the IECEE CB Scheme or the IECEx scheme are developed. In most countries these schemes are not mandatory, but support of those schemes will eventually lead to the elimination of trade barriers while providing the necessary safety regulations. While it is the ultimate goal of such organizations to provide globally recognized standards and a globally recognized certification scheme, today manufacturers still Karel Neleman BARTEC NL b.v. Boelewerf 25 2987 VD Ridderkerk The Netherlands Frédérique Plumeré BACAB SA, member of the BARTEC Group Rue de l'Industrie 19 1450 Sainte-Croix Switzerland have some more hurdles to take in order to be able to gain global market access. Based on the experiences of the authors of this paper, this paper will describe processes for certification for Europe, the United States of America and Canada. However certification for other countries or combination of countries can be handled in simultaneous ways. II. A. NATIONAL REQUIREMENTS FOR ACCESS TO MARKET OF EX-EQUIPMENT Europe In Europe regulations were developed in order to enable free trade between the individual European countries that in the past used to have their own safety regulations. These regulations are called the new approach. In the new approach mandatory directives define essential health and safety requirements, for miscellaneous applications and equipment. The party bringing equipment to the European Economic Area (EEA), usually the manufacturer, is responsible for meeting the requirements of all directives applicable to the equipment. Therefore the manufacturer has to supply two documents with the equipment, an instruction manual, describing the safe installation, use and maintenance, and a manufacturer’s declaration of conformity. The requirements of the directives are rather generic. The manufacturer’s declaration of conformity can be based on standards in order to comply with the requirements of the directives. It is up to the discretion of the manufacturer of the equipment to decide which standards to apply for assessment as long as it is ensured that all applicable requirements of the directives are met. For equipment meant for use in potentially explosive atmospheres (Ex-equipment) the certification scheme is defined in the ATEX Directive 94/9/EC, which is also called ATEX 95 because it is based on Article 95 of the EC Treaty. Compliance of the equipment with the ATEX 95 directive can be achieved by complying with the essential health and safety requirements of ANNEX II of that directive. Compliance with the essential health and safety requirements may be achieved by a checklist addressing all applicable requirements or compliance with Harmonized Standards. For the checklist all kinds of standards, even non European standards may be applied. European standards (EN-standards) are developed by the European Committee for Electrotechnical Standardization (CENELEC). Depending on the application and type of equipment, assessment and certification is either mandatory by a Notified Body or can be done by the manufacturer. I.e. under certain conditions self certification is authorized. 1 B. United States of America B. In the United States of America the applications are defined by the National Fire Protection Association in: 1) NFPA 497, Classification of Flammable Liquids, Gases or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas. 2) NFPA 499, Recommended practice for the classification of combustible dusts and of Hazardous (Classified) Locations for Electrical Installation in Chemical Process Areas. Requirements for installation of equipment in Hazardous (Classified) Locations are listed in Article 500 of the National Electrical Code (NFPA 70). The Occupational Safety & Health Administration (OSHA) has accredited Nationally Recognized Test Laboratories (NRTL’s) for certification of equipment for use in potentially explosive atmospheres as described above. OSHA may also accredit Test Laboratories with head offices based outside the US as NRTL’s. NRTL’s use American National Standards accredited by the American National Standards Institute (ANSI). They may add additional requirements in order to issue test reports, list the equipment or issue certificates. ANSI only facilitates the co-ordination of standards, it does not develop standards. For example IEEE, NEMA or NIST develop standards for the US, but also the NRTL’s develop standards. Test reports, listings or certificates issued by a Nationally Recognized Test Laboratory are needed for access to the US market in the appropriate applications. Self certification is not possible. C. Canada Requirements for installation of equipment in Hazardous Locations are listed in Section 18 of the Canadian Electrical Code (C22.1). The Standards Council of Canada (SCC) has accredited so-called Accredited Certification Bodies (ACB’s) for certification of equipment for use in potentially explosive atmospheres. Also SCC may accredit Certification Bodies with head offices based outside Canada as ACB’s. In Canada some ACB’s are accredited to develop standards by SCC. This may be done under the Canadian National standards system. Certificates or listings issued by an Accredited Certification Body are needed for access to the Canadian market in the appropriate applications. Self certification is not possible. The IECEx certification scheme provides the mechanics to obtain a Certificate of Conformity (CoC) based on the standards for explosive atmospheres issued by IEC TC31. IECEx Certificates of Conformity are always accompanied by IECEx Test Reports (ExTR’s). These ExTR’s are detailed test reports providing sufficient evidence for compliance of the equipment with the applicable standards. Within the IECEx scheme Testing Laboratories (ExTL’s) are qualified to issue IECEx Test Reports. Certification Bodies (ExCB’s) are qualified to issue Certificates of Conformity. The Commonality between Canada, the EEA countries and the USA is that many Accredited Certification Bodies, Notified Bodies and Nationally Recognized Test Laboratories are nationally accredited as well as qualified as IECEx Testing Laboratories and IECEx Certification Bodies. The example of this paper describes projects in which certification was applied for: 1. 2. ATEX from certification body being an ATEX Notified Body, IECEx ExTL and ExCB. The US and Canadian from a certification body being an ACB, NRTL, IECEx ExTL and ExCB. IV. DIFFERENCES BETWEEN IEC AND THE NATIONAL REQUIREMENTS OF EUROPE, USA AND CANADA A. National Differences Countries which are IECEx member states, but have not fully adopted the IEC standards are in a so-called transition level. This is often caused by the existence of national standards in those member states. These national standards can not be made obsolete on short term. Usually differences exist between the national standards and the IEC standards. For each IECEx member state in transition level the “National Differences” are listed in the IECEx Bulletin [1]. The differences listed in the bulletin regard differences in the standards applicable for explosive atmospheres (hazardous areas). An equipment manufacturer can address the certification of the national differences in several ways. For example an equipment manufacturer seeking access to the European, US and Canadian markets can work from the basis of IECEx certification addressing all applicable national differences for Europe, the US and Canada. There are several options for this approach: III. COMMONALITIES OF THE NATIONAL REQUIREMENTS OF EUROPE, USA AND CANADA A. International certification scheme IECEx 1. International standards IEC The Technical Committee 31 (TC31) of the International Electrotechnical Commission (IEC) develops international standards for explosive atmospheres (hazardous locations). Within that technical committee stakeholders from around the world work together and make sure that the international standard covers as much safety requirements for explosive atmospheres as possible. It is fair to say, that over the last decades more and more countries participate in the IEC work and that it is now truly globally supported. Obviously the standards developed and issued by IEC represent the best commonality between the national safety regulations of the participating countries. 2. 2 Apply at an IECEx Certification Body (ExCB) and Testing Laboratory for an IECEx Certificate of Conformity accompanied by an IECEx Test Report (ExTR) covering the requirements of the applicable IEC standards and the national differences for Europe, the US and Canada. All testing work can be done by a single IECEx Testing Laboratory. The ExTR covering the national differences, approved by the ExCB, can be sent to the national certification bodies in order to apply for certificates, listings or registrations providing access to the national markets. Apply at an IECEx Certification Body (ExCB) and Testing Laboratory for an IECEx Certificate of Conformity accompanied by an IECEx Test Report (ExTR) covering the requirements of the applicable IEC standards only. Then apply at the national certification bodies and testing laboratories for assessment of the applicable national differences separately. In this case miscellaneous testing laboratories can be involved in the testing work. Under the IECEx scheme for both options following applies: The national certification body usually has to be an IECEx ExCB in order to accept the ExTR’s. Both methods should result in avoiding re-testing if the other national bodies are qualified by the IECEx scheme for the applicable IEC standards. It should be noted that the national bodies remain the right to review the ExTR’s. A mix of both options is also possible. Due to time constrains, national conditions (see IV B below) and other issues (see V below) a mix of both options is often beneficial. per Certification body and testing laboratory are listed on the IECEx WEB site. The essence of the above mentioned qualifications is applicable to any certification body and testing laboratory, regardless if it is under the IECEx scheme or a national certification scheme / regulation. Translating these qualifications into requirements this basically means for certification bodies and testing laboratories that they shall: 1. 2. 3. 4. 5. B. National Conditions Certificates, for explosive atmospheres alone do seldom provide market access. The national differences listed in the IECEx Bulletin do not address requirements for the equipment outside of the scope of the IEC standards for hazardous area issued by TC31. For each country there may be additional requirements. The additional requirements may be dictated by national regulations for Electro Magnetic Compatibility (EMC), general electric safety like installation / wiring methods or other environmental and safety regulations. In most countries the equipment shall be assessed and certified by the national certification bodies of the applicable states where market access is sought. All these requirements may have controversial effects on the design of the equipment. In order to avoid re-designs of the equipment it is beneficial for the manufacturer to have the equipment assessed for all requirements in the earliest design stage as possible. In case design changes are necessary it is crucial that all parties involved in the testing and assessment of the product are provided with the details of those design changes. Communication is a key factor for success. The amount of parties involved in assessment and certification should be limited and communication channels between certification bodies and testing laboratories involved should be set-up and maintained till the end of the certification process of the equipment. V. A. OTHER ISSUES AFFECTING GLOBAL CERTIFICATION Qualifications laboratories of certification bodies and testing Certification bodies and testing laboratories must be qualified for the assessments they are performing. Under the IECEx scheme certification bodies and testing laboratories have to be qualified for the following: 1. 2. 3. 6. B. Know the procedures for assessment testing and certification. Have personnel qualified to perform assessments against the applicable standards. Have personnel qualified to perform tests against the applicable standards. Have adequate test facilities / equipment to perform the tests or have personnel qualified to witness tests at the manufacturers laboratory. Operate on basis of a quality system which has to ensure: - Impartiality of the body or laboratory. - Discretion to the customer, regarding the exchange of proprietary information necessary for assessment and certification. - Complete and accurate, thus reliable assessment. - The correct level of confidence of the testing. - Customers requests are translated into the correct service. Be able to communicate with the manufacturer. In some cases manufacturers have to use representatives if language barriers occur. Accreditations of certification bodies and testing laboratories National certification bodies and testing laboratories usually have to be accredited by an official body assigned by the government of the applicable state. The difference between accreditation and qualification under the IECEx scheme is that different rules of procedure and / or requirements may apply. Another difference is the fact that the IECEx scheme is not mandatory in IECEx member states in transition phase such as states in the European Economic Area (EEA), the US and Canada. In these states national accreditation is mandatory. C. Qualifications of the manufacturer It is the responsibility of the manufacturer to make sure that the equipment, he puts on the market, complies with the requirements of those markets. Assessment of the equipment by testing laboratory is basically a verification of compliance with a defined set of requirements of the applicable standards. Certification of the equipment by a certification body is basically giving evidence of compliance with the requirements of the applicable standards mentioned in the certificate. The manufacturer needs to know for example: 1. IECEx Rules of Procedure. ISO/IEC 17025 [2] General requirements for the competence of calibration and testing laboratories. For each IEC standard, against which the equipment needs to be assessed, individually. The qualifications 2. 3. 3 Area classification of the explosive atmosphere for which the equipment is to be designed. The type of protection applied in order to comply with the requirements of the applicable explosive atmosphere. The standards applicable to his equipment in relation to the types of protection applied. 4. 5. 6. The requirements mentioned in the applicable standards. The ratings of the equipment. The national conditions of the markets. In order to gain this knowledge the manufacturer can carry out market studies, attend trainings, study the requirements in regulations and standards them self and / or seek the help of consultancy companies. With most type certification, assessment of the production facilities of the manufacturer is necessary. The assessment comprises of periodical audits, inspections by certification bodies. Upon positive result of the assessment notifications, or certificates may be issued to the manufacturer and /or the manufacturer will be listed by the certification body. D. Relation between the manufacturer and certification bodies / testing laboratories Certification bodies can only work on basis of the information provided by the manufacturer. Often proprietary information has to be exchanged. This means that the relation between manufacturer and certification body / testing laboratories can only be based on trust. The manufacturer shall be able to provide a full set of information clear definition of the scope with his inquiry to the certification body / testing laboratory. Furthermore a clear level of communication must be established. The manufacturer needs to know the information and samples the certification body / testing laboratory needs. The standards are a guideline for the manufacturer to provide the information in a technical construction file. However certification bodies and testing laboratories may provide guidance in order to assure that complete assessment and testing is possible. The better the manufacturer knows the requirements the better he will be able to provide the appropriate information and samples for assessment and / or testing. Communication about missing information or samples and the resulting reactions are generally very time consuming and have an impact on project planning and costs. Certification bodies and testing laboratories however should inform the manufacturer about any missing information, non-conformities or any other issues having an effect on the project plan or cost. E. laboratories will provide information about acceptance of assessment reports or test results. Sometimes these relations have to be established per certification project. Project managers of the selected certification bodies / testing laboratories and the manufacturer should communicate with each other and establish a project plan in which every body’s activities are defined. VI. EXPERIENCES OF AN EUROPEAN MANUFACTURER IN GAINING MARKET ACCESS FOR EUROPE, USA AND CANADA Below find a case which is described by a manufacturer who applied for certification which provides market access to Europe, Canada, the United States and preferably other markets. A. Description of case This example shows the case of a self limiting heating cable manufacturer and its holding. Fig. 1 Self limiting heating cables The holding designs, manufactures and supplies heat tracing components and complete systems for industrial applications including areas where hazardous substances such as flammable gas / vapours and combustible dusts might de present. Their product line includes connection systems, control systems, installation accessories and the trace heating cables. Relationships between certification bodies / testing laboratories In case certification for multiple markets is sought, the goal is to avoid as much re-assessment and re-testing as possible. It is than essential that the certification bodies and testing laboratories accept test / assessment reports from each other. The relations between certification bodies / testing laboratories under the IECEx scheme are well defined. The IECEx rules do not apply in case an IECEx Certification Body / Testing Laboratory is not qualified for a particular standard or national conditions are to be assessed. In this case the relations between certification bodies have to be based on trust as well. Some certification bodies / testing laboratories have contracts or agreements with each other about acceptance of test results and qualification of each others laboratory or personnel. Manufacturers may benefit from this by selecting certification bodies / testing laboratories which have such contracts or agreements established. Certification bodies and testing Fig. 2 Accessories for trace heating cables The holding and the manufacturer initially applied for updated certification for the European Economic Area, and new certificates for the US and Canada. For Europe they chose a notified / certification body which had already certified their equipment for the ATEX. For the US and Canada a certification body in Canada was selected. This certification body is accredited to issue certificates for both Canada and the US. Both certification bodies are members of the IECEx scheme, have their own testing laboratories and on top of that they have agreements amongst each other for acceptance of assessment reports and test results. 4 B. ATEX All components and systems did already meet the requirements of various test agencies. The equipment intended for use in Ex-applications have been certified for many years in accordance with the ATEX directive 94/9/EC for use in surface installations with explosive atmospheres where combustible dust or flammable gas / vapour are likely to occur. In ATEX terms Group II, Category 2 G/D (see the Ex standard guide in the appendix). For that purpose the majority of the equipment was assessed, tested and certified according to EN 50014 and EN 50019. Later, due to harmonization between IEC and the European Committee for Electrotechnical Standardization (CENELEC), the applicable standards for the trace heating were modified and changed. Under ATEX this meant that the state of the art of technology changed. For full compliance with the ATEX directive re-assessment and recertification of the complete product range was necessary. The new standards against which the trace heating had to be assessed were: EN-IEC 60079-0, EN-IEC 62086-1, ENIEC 61241-0 and EN-IEC 61241-1. C. IECEx ATEX is about removing trade barriers within the European Economic Area but is not helping European manufacturers to export to the rest of the world. To facilitate the expansion of its business into new markets outside Europe, the manufacturer of the heating cable decided to combine the IECEx certification with the ATEX certification. Indeed the global acceptance of IECEx equipment test and assessment reports will facilitate the manufacturer’s future Ex-certification in countries where regulations still require the issuing of national Ex-certificates or approvals. Due to the fact that under VI. B. mentioned EN-IEC standards were used for ATEX certification; the IEC requirements including the national differences for Europe were already assessed. For IECEx certification an IECEx Test Report (ExTR) based on the results of the assessment and testing had to be compiled. Compared to the total work load for testing and assessment this meant a little more work. For the manufacturer of the heating cable this was the first IEC Certificate of Conformity to be issued. Therefore their production facility had to be audited and an IECEx Quality Assessment Report (QAR) established. Around that time their manufacturing facility was due for a periodic ATEX audit. Because of the similar requirements for ATEX and IECEx production facility assessments, the QAR and ATEX Quality Assessment Notification were issued by the European notified / certification body based on the same audit. This was saving costs for separate audits. Based on the IECEx Quality Assessment Report (QAR) and Test Report (ExTR) the IECEx Certificate of Conformity on the trace heating cables was issued. D. Market access for North America Even if the trace heating does meet the requirements specified in the European directives and the IECEx scheme, for the manufacturer to be able to sell their products in North America, the equipment has to meet the individual national certification requirements. The equipment has to be certified, in this case by a certification body accredited to issue certificates for Canada and the US. For certification the equipment was assessed against C22.2 No. 130, [3] and IEEE Std 515 [4] “Requirements for Electrical Resistance Heating Cables and Heating Device Sets”. These two standards are similar to each other. Furthermore the equipment was assessed against other standards and requirements for compliance with the Canadian Electric Code (CEC) and the US National Electric Code (NEC). The main difference between the European and North American certification is that in the US and Canada, it is not possible to certify a component alone. The complete heat tracing system including accessories has to be assessed and certified. Not only against Ex requirements but also generic electric safety requirements. This assessment called for good communication and cooperation between the heating cable manufacturer and its holding, the accessories manufacturer. Although the USA and Canada are members of the IECEx scheme, their national standards differ from the IEC standards. Because of the large numbers of national differences between the IEC standards and C22.2 No. 130 / IEEE Std 515 the Canadian certification body did decide not to qualify within the IECEx scheme for the tracing standards yet. However the agreements between the European certification body and Canadian certification body made it possible to change the initial project plan for European certification in order to facilitate also US and Canadian certification. E. Project management For trace heating a large amount of specific testing requirements are applicable. The manufacturer, the European and Canadian certification body agreed on a mutual test plan. Almost the complete product range of the heating cable manufacturer was to be certified in a single project. The amount of tests was extensive. Therefore the effort to set up such agreements and test plans paid off. The test plan for ATEX and IECEx now did address all those national differences for the US and Canada which had an effect on testing against the EN-IEC standards. This fact, combined with the agreements made for this project caused the Canadian certification body to accept the IECEx Test Report (ExTR), addressing applicable national differences, issued by the European certification body. Visa versa the European certification body accepted test reports of the Canadian certification body for tests carried out in their testing laboratory. This practice allowed the amount of testing to be reduced significantly. Tests, only specific to American standards, were done at the Canadian testing laboratory or at the manufacturer witnessed by either the Canadian testing laboratory or the European testing laboratory. Tests specific to IECEx, and ATEX were carried out at the Canadian or European testing laboratory or at the manufacturers testing laboratory under witness. The location was depending on the availability of the necessary test equipment and other resources. This arrangement resulted in a significant cost reduction for the heating cable manufacturer. For this plan to be successful, good planning and good communication between the manufacturers, Canadian and European certification body was essential. The samples provided by the manufacturer were, to some extend, accessories which were already approved for the US and Canada. This way the scope for assessment against the national conditions was limited. Due to the extensive number of national differences using IECEx certified accessories in this project did not matter. This situation can only improve when the US and Canadian standards are becoming more harmonized with the IEC standards. 5 CSA Because of the complexity of the project it took longer than anticipated. Forcing good cooperation between two manufacturers of Ex-equipment and two approval agencies was a good exercise. This was only possible by maintaining good contact and having frequent meetings to review the results and re-define the objectives and priorities where necessary. EC EEA EMC EU ExCB ExCoC ExTL ExTR FM IEC IECEE VII. CONCLUSIONS The IECEx scheme is a serious solution for global certification. It provides a structured system to achieve global acceptance for equipment intended for use in explosive atmospheres. The goal is to protect users against equipment which does not comply with the required level of safety. The petro-chemical industry will benefit from this as eventually the same equipment can be applied, no matter where a plant is located. This enables the industry to set up and maintain global safety and maintenance programs. The IECEx scheme members declare that they will remove any national differences for product requirements in their countries during the coming years. IEC TC31 Technical Committee’s working group members are working close together with national standards working groups in order to reduce and eventually eliminate the national differences. An example of which is the latest IEEE515 working group meeting, to which participants of the IEC 60079-30-1 working group were invited in order to harmonize those standards. Both standards contain assessment and testing requirements for trace heating, intended for use in Zone 1 explosive atmospheres. IEEE515 for the US and IEC 6007930-1 under the IECEx scheme. As there is still quite a list of national differences, there are some hurdles to take. For global certification these hurdles can be overcome by smart project planning and management with regards to: 1. 2. 3. 4. IECEx ISO NEC NFPA NRTL OSHA QAR QAN SCC TC31 UL US(A) Canadian Standards Association, NRTL, USA. European Community. European Economic Area. Electro Magnetic Compatibility. European Union. IECEx Certification Body. IECEx Certificate of Conformity. IECEx Testing Laboratory. IECEx Test Report. Factory Mutual, NRTL, USA. International Electrotechnical Commission. Worldwide System for Conformity Testing and Certification of Electrotechnical Equipment and Components. International Electrotechnical Commission Scheme for Certification to Standards Relating to Equipment for use in Explosive Atmospheres (IECEx Scheme). International Organization for Standardization. National Electric Code, NFPA 70, USA. National Fire Protection Association, USA. Nationally Recognised Test Laboratory, USA. Occupational Safety and Health Administration, USA. IECEx Quality Assessment Report. ATEX Quality Assessment Notification. The Standards Council of Canada. IEC Technical Committee: Equipment for explosive atmospheres. Underwriters Laboratory, NRTL, USA. United States of America. IX. ACKNOWLEDGEMENTS Special thanks to: 1. Mr. Marco Rog from ENRAF Honeywell for his constructive input and comments. 2. Mr. Todd Hamden from CSA International for his active and constructive participation in the certification work. 3. The standards committees members who help make the standardization work possible and strive for harmonization of national and international standards. Knowing the requirements of the market places where the equipment to be sold. Setting up a technical construction file containing all relevant specifications and documentation. Selecting the right partners for certification. Maintaining sufficient communication between all parties involved. X. REFERENCES VIII. NOMENCLATURE ACB Accredited Certification Body, Canada. ANSI American National Standards Institute API COPM American Petroleum Institute, Committee Of Petroleum Measurement ATEX French: "ATmosphere EXplosible" European Directive, 94/9/EC, obligatory certification scheme for Equipment intended for use in Potentially Explosive Atmospheres (ATEX). CEC Canadian Electrical Code, C22.1, CSA. CENELEC French: "Comité Européen de Normalisation ELECtrotechnique”, English: European Committee for Electrotechnical Standardization. CB IECEE CB Scheme, international system for mutual acceptance of test reports and certificates dealing with the safety of electrical and electronic components, equipment and products. [1] [2] [3] [4] [5] [6} 6 IECEx WEB-site: www.iecex.com. NFPA 70, 1996 National Electrical Code, Quincy, MA: NFPA. C22.2 No. 130, Requirements for Electrical Resistance Heating Cables and Heating Device Sets. IEEE Std 515, IEEE standard for the Testing, Design, Istallation, and Maintenance of Electrical Resistance Heat Tracing for Industrial Applications. C. Agius, “IECEx A Global Solution for the Ex Industry”, in PCIC Europe 2006 conference record, AM-35. B. Johnson, P. House, R. Mulder, T. Pijpker, R. Pommé, “The relationship in product standardization, third party product testing and IECEx certification”, in PCIC Europe 2006 conference record, AM-39. XI. VITA Rudolf Pommé, Project Manager Explosion Safety with an IECEx Certification Body, IECEx Testing Laboratory and ATEX Notified Body in The Netherlands, thirteen years of experience in application engineering, production, product development and certification of equipment for use in potentially explosive atmospheres in the Petrochemical Industry. He graduated from the Institute of Technology with a Bachelor of Engineering in Applied Science, Industrial Engineering and Management Science. He is a member of NEC31, IEC MT 60079-30 and WG IEEE515. He was coauthor of a previous paper called “The relationships in product standardization, third party product testing and IECEx certification” Mario Colpa is Managing Director of a manufacturer of self limiting heating systems located in Switzerland. He has been active in various management positions in manufacturing, marketing and sales following a 7 year’s period as engineering officer in the Royal Dutch Navy. He graduated in 1995 from the University of Technology in Delft with a Master of Science degree in Electrical Engineering, followed by an MBA at the Edinburgh Business School. Ing. Karel Neleman (B Eng) graduated as Bachelor of electrical- and electronic engineering (information technology) at the University of Professional Education Rotterdam in 1989. Since 1990 he is working for the Dutch division of a German holding where he started as sales engineer for explosion proof electrical equipment. He started an international successful control panel and switchgear building division with an ATEX Production Quality Assessment Notification within BARTEC. He is a member of the Dutch standardization committee NEC 31 international SC MT 60079-14 and is ATEX authorized contact. Frédérique Plumeré, for the past three years has been the R&D Manager at a manufacturer of self-limiting heating cable in Sainte Croix Switzerland. She is primarily involved in product development, product improvement and product certification by the various worldwide approval agencies. She graduated from the University of Dijon (France) with a Bachelor of Science Degree in Material Sciences. 7 APPENDIX, EX STANDARD GUIDE FOR EU, US AND CSA MARKET ACCESS, PAGE 1 OF 2. 8 APPENDIX, EX STANDARD GUIDE FOR EU, US AND CSA MARKET ACCESS, PAGE 2 OF 2. 9