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 d t l ti ti advance property loss prevention practices.

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

• Fire Protection Equipment

S i kl

We offer Product Certification in 3 key areas

− Sprinklers − 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 Fi t ti d fi t d b ildi t i l − Fire-protective and fire-rated building materials − Other property loss prevention products

H d L ti C tifi ti Hazardous Location Certification

• 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 Fl f – Nonincendive N ki – Flameproof – Restricted Breathing E l ti – Non-sparking – Protected Sparking I t i i S f t – Encapsulation – Pressurization/Purging – Intrinsic Safety – & More

E l f IS P d t Examples of IS Products

• We Approve hundreds of products as IS:
• We Approve hundreds of products as IS:

Land Mobile Radios Barriers – Land Mobile Radios – Telephones Cameras – Barriers – I/O Modules T t S – Cameras – Computers G D t t – Temperature Sensors – Pressure Sensors L l S – Gas Detectors – Flashlights L – Level Sensors – Flow Meters Et – Lamps – Etc……

Ignition In Hazardous Locations

H d l ti t d d f th

• Hazardous location standards focus on the

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

= Encapsulation

• Fuel

= Encapsulation

• Ignition = Intrinsic Safety

There are many others

Intrinsic Safety Intrinsic Safety

Focuses On The Ignition Source

I iti E C Ignition Energy Curve

Ignition Point

Intrinsic Safety = Margin of Safety

FM 3610 Revisions and Margin of Safety FM 3610 Revisions and Margin of Safety

Ignition Point

2012 Design Freeze

tion

Margin of Safety LMR Margin of Safety

No Design Freeze

Risk of Igni

Margin of Safety Other ESE Margin of Safety

R

LCD Display LiO Battery

? 1988

Safety Factor = 1.22 O / Sh t LCD Display SMT Circuits

1999

Safety Factor = 1.5 Defined Faults LiO Battery Active Circuits

2010

Prescriptive Assessments Additi l B tt A t

? ?

Open / Shorts Defined Faults Additional Battery Assessments

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

Ignition Point

2012 Design Freeze

tion

Margin of Safety LMR Margin of Safety

No Design Freeze

Risk of Igni

Margin of Safety Other ESE Margin of Safety

R

LCD Display LiO Battery

? 1988

Safety Factor = 1.22 O / Sh t LCD Display SMT Circuits

1999

Safety Factor = 1.5 D fi d F lt LiO Battery Active Circuits

2010

Prescriptive Assessments Additi l B tt A t

? ?

Open / Shorts Defined Faults Additional Battery Assessments

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

= Encapsulation

• Fuel

= Encapsulation

• Ignition = Intrinsic Safety

There are many others

THANK YOU THANK YOU