Electronic Safety. Hazardous Location. By Jim Marquedant

Transcription

1 Requirements for Electronic Safety Equipment used in a Hazardous Location By Jim Marquedant

2 Agenda FM Global & FM Approvals Overview Ignition In Hazardous Locations Evolution of Intrinsic Safety Recommendations for Electronic Safety Equipment (ESE)

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4 Parent company of FM Approvals Largest industrial and commercial property insurance company in the world What makes FM Global unique? Philosophy Majority of loss is preventable Single Focus Highly Protected Risk (HPR) Research & Engineering g

5 Supporting Property Loss Prevention

6 Mission Statement FM Approvals approves and certifies products and services with unique focus on: Objectively testing property loss prevention products and services and certifying those that meet rigorous loss prevention standards; Encouraging the development and use of Approved products and services that improve and advance property loss prevention practices.

7 History s Approved Electrical Fittings published by Inspection Department of the Associated Factory Mutual Fire Insurance Companies. Dated June 1897.

8 We offer Product Certification in 3 key areas Fire Protection Equipment Sprinklers Traditional fire protection equipment Fire pumps and related equipment Special-protection extinguishing systems Electrical Equipment Equipment for hazardous locations Fire alarm and signaling systems Building Materials Roofing products Fire-protective ti and fire-rated building materials Other property loss prevention products

9 Hazardous Location Certification There are many types of protection that can make a product suitable for use in a specific area classification: Explosionproof Flameproof Restricted Breathing Encapsulation Pressurization/Purging Nonincendive Non-sparking Protected Sparking Intrinsic i Safety & More

10 Examples of IS Products We Approve hundreds of products as IS: Land Mobile Radios Barriers Telephones I/O Modules Cameras Temperature Sensors Computers Pressure Sensors Gas Detectors t Level Sensors Flashlights Flow Meters Lamps Etc

11 Ignition In Hazardous Locations Hazardous location standards d focus on the prevention of an ignition by eliminating one or more of the three elements

12 Methods to eliminate an element: Oxidizer = Purging with Inert Gas Fuel = Encapsulation Ignition = Intrinsic Safety There are many others

13 Intrinsic Safety Focuses On The Ignition Source Ignition Energy Curve Ignition Point Intrinsic Safety = Margin of Safety

14 FM 3610 Revisions and Margin of Safety Ignition Point 2012 Design Freeze LMR Margin of Safety No Design Freeze tion Risk of Igni Margin of Safety Other ESE Margin of Safety 1988 LCD Display LiO Battery SMT Circuits Active Circuits Safety Factor = 1.22 Safety Factor = 1.5 Prescriptive Assessments Open / Shorts Defined Faults Additional Battery Assessments??

15 FM Approvals Recommendations 1. Require the same margin of safety for all ESE used in the same area.

16 FM 3610 Revisions and Margin of Safety Ignition Point 2012 Design Freeze LMR Margin of Safety No Design Freeze tion Risk of Igni Margin of Safety Other ESE Margin of Safety 1988 LCD Display LiO Battery SMT Circuits Active Circuits Safety Factor = 1.22 Safety Factor = 1.5 Prescriptive Assessments Open / Shorts Defined Faults Additional Battery Assessments??

17 FM Approvals Recommendations 1. Require the same margin of safety for all ESE used in the same area. 2. Require suitability for a specific area q y p classification rather than a specific protection method.

18 Methods to eliminate an element: Oxidizer = Purging with Inert Gas Fuel = Encapsulation Ignition = Intrinsic Safety There are many others

19 THANK YOU