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U.S. participation in IECEx Scheme

This article explores the scope of U.S. participation in the IECEx Scheme, covering inspection and regulatory authorities, installation codes, standards developing organizations (SDO's), third-party certifiers, manufacturers, users, and ordinary location requirements in hazardous locations.

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U.S. participation in IECEx Scheme

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  1. U.S. participation in IECEx Scheme Presented by: Kerry McManama Underwriters Laboratories Inc. (UL)

  2. Emerging Trends: Hazardous LocationsU.S. participation in IECEx Scheme • Scope of Participation • Inspection & regulatory authorities • Installation codes • Standards developing organizations (SDO's) • Third-party certifiers • Manufacturers • Users • Ordinary location requirements

  3. Emerging Trends: Hazardous LocationsThe U.S. Scope of Participation General requirements (IEC60079-0) Flameproof enclosures "d" (IEC 60079-1) Pressurisation "p" (IEC 60079-2) Powder filling "q" (IEC 60079-5) Oil-immersion "o" (IEC 60079-6) Increased safety "e" (IEC 60079-7) Intrinsic safety "i" (IEC 60079-11) Type of protection "n" (IEC 60079-15) Encapsulation "m" (IEC 60079-18) Flammable Gas Detection Apparatus (IEC 61779-1, 4 & 5)Electrical resistance trace heating (IEC 62086-1)

  4. U.S. participation in IECEx SchemeInspection & Regulatory Authorities • IAEI actively engaged in zone system • OSHA more tentative • MSHA pursuing zone adoption • U.S. certifier Marks still basis for acceptance

  5. U.S. participation in IECEx SchemeInstallation Codes • 1996 NEC adopted zone system (gas only) • 1999 & 2002 NECs further clarified • 2005 NEC adopted dust zones • 2008 NEC to further embrace IEC dust methods (IEC 61241 Series)

  6. U.S. participation in the SchemeSDO’s • UL (60079 series) • ISA (12 series) • IEEE (515)

  7. U.S. participation in IECEx SchemeThird-party certifiers • UL first U.S. IEC ExCB and ExTL • FM also now recognized • ETL planning to pursue recognition

  8. U.S. participation in IECEx SchemeManufacturers • Actively pursuing IEC zone certifications • IECEx scheme submittals growing • Actively pursuing Division certifications • Must maintain dual-system certifications • Single design meeting both systems

  9. U.S. participation in IECEx SchemeUsers • User community drove initial U.S. efforts • Manufacturers now primary drivers • Installation codes primary basis for national differences

  10. U.S. participation in IECEx SchemeORDINARY LOCATIONS REQUIREMENTS • For all equipment: • Risk of Fire • Risk of Electric Shock • Special Applications: • Environmental Ratings • Marine Ratings • Signaling/Fire Alarm

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