Requirements for Requirements for Electronic Safety Equipment used - PowerPoint PPT Presentation

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

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

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

Supporting Property Loss Prevention Supporting Property Loss Prevention

Mission Statement Mission Statement FM Approvals approves and certifies products pp pp p 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. d t l ti ti

Hi t History 1897 1940s 1999 2006 1897 - Approved Electrical Fittings published by Inspection Department of the Associated Factory Mutual Fire Insurance Companies Factory Mutual Fire Insurance Companies. Dated June 1897.

We offer Product Certification in 3 key areas We offer Product Certification in 3 key areas  Fire Protection Equipment − Sprinklers S i kl − Traditional fire protection equipment − Fire pumps and related equipment Fire pumps and related equipment − Special-protection extinguishing systems  Electrical Equipment q p − Equipment for hazardous locations − Fire alarm and signaling systems  Building Materials − Roofing products − Fire-protective and fire-rated building materials Fi t ti d fi t d b ildi t i l − Other property loss prevention products

H Hazardous Location Certification d L ti C tifi ti  There are many types of protection that can  There are many types of protection that can make a product suitable for use in a specific area classification: area classification: – Explosionproof – Nonincendive – Flameproof Fl f – Non-sparking N ki – Restricted Breathing – Protected Sparking – Encapsulation E l ti – Intrinsic Safety I t i i S f t – Pressurization/Purging – & More

E Examples of IS Products l f IS P d t  We Approve hundreds of products as IS:  We Approve hundreds of products as IS: – Land Mobile Radios Land Mobile Radios – Barriers Barriers – Telephones – I/O Modules – Cameras Cameras – Temperature Sensors T t S – Computers – Pressure Sensors – Gas Detectors G D t t – Level Sensors L l S – Flashlights – Flow Meters – Lamps L – Etc…… Et

Ignition In Hazardous Locations  Hazardous location standards focus on the H d l ti t d d f th prevention of an ignition by eliminating one or more of the three elements more of the three elements

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

Intrinsic Safety Intrinsic Safety Focuses On The Ignition Source I Ignition Energy Curve iti E C Ignition Point Intrinsic Safety = Margin of Safety

FM 3610 Revisions and Margin of Safety FM 3610 Revisions and Margin of Safety 2012 Design Freeze Ignition Point LMR No Design Freeze Margin of Safety tion Margin of Safety Margin of Safety Risk of Igni Other ESE Margin of Safety R LCD Display LCD Display LiO Battery LiO Battery ? ? SMT Circuits Active Circuits ? 1999 2010 1988 Safety Factor = 1.5 Safety Factor = 1.22 Prescriptive Assessments Defined Faults Defined Faults O Open / Shorts / Sh t Additi Additional Battery Assessments l B tt A t

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

FM 3610 Revisions and Margin of Safety FM 3610 Revisions and Margin of Safety 2012 Design Freeze Ignition Point LMR No Design Freeze Margin of Safety tion Margin of Safety Margin of Safety Risk of Igni Other ESE Margin of Safety R LCD Display LCD Display LiO Battery LiO Battery ? ? SMT Circuits Active Circuits ? 1999 2010 1988 Safety Factor = 1.22 Safety Factor = 1.5 Prescriptive Assessments O Open / Shorts / Sh t D fi Defined Faults d F lt Additi Additional Battery Assessments l B tt A t

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.

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

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