IEC eLearning module Module 21 unit 01 Explosive

IEC e-Learning module Module 21 – unit 01 Explosive Environments © IEC 2015

IEC e-Learning module Module 21 – unit 01 Explosive Environments © IEC 2015

IEC e-Learning module M 21 -01 2/11

Explosive Environments What is an Ex area? • Hazardous Locations or HAZLOC • Hazardous Areas • Explosive Atmospheres IEC e-Learning module M 21 -01 2/11

Explosive Environments IEC e-Learning module M 21 -01 3/11

Explosive Environments What is an Ex area? Concentrations of • flammable liquids • flammable vapours • flammable gases • combustible dust IEC e-Learning module M 21 -01 3/11

Explosive Environments IEC e-Learning module M 21 -01 4/11

Explosive Environments Where are Ex areas? • Oil refineries • Oil rigs • Chemical processing plants • Gas pipelines & distribution • Underground coalmines IEC e-Learning module M 21 -01 4/11

Explosive Environments Where are Ex areas? IEC e-Learning module M 21 -01 5/11

Explosive Environments Where are Ex areas? • Automotive refueling stations (petrol stations or gas stations) • Aircraft refueling (airports) • Hospital operating theatres • Sewage treatment plants IEC e-Learning module M 21 -01 5/11

Explosive Environments Where are Ex areas? IEC e-Learning module M 21 -01 6/11

Explosive Environments Where are Ex areas? • Metal surface grinding, especially aluminium dust • Surface coating industries • Printing industries • Paper and textile industries • Woodworking areas IEC e-Learning module M 21 -01 6/11

Explosive Environments IEC e-Learning module M 21 -01 7/11

Explosive Environments Ex equipment • Mining lights • Pumps • Circuit breakers • and so much more • Ex equipment IEC e-Learning module M 21 -01 7/11

Explosive Environments Ex equipment IEC e-Learning module M 21 -01 8/11

Explosive Environments Ex equipment • Specially designed and tested • Isolated in appropriate enclosure • Avoid sparking & electrical arcing • Avoid high temperatures • Special labeling & marking IEC e-Learning module M 21 -01 8/11

Explosive Environments IEC e-Learning module M 21 -01 9/11

Explosive Environments Risk • Loss of equipment & revenues • Environmental consequences • Loss of life • Loss of critical infrastructure • National economic effects IEC e-Learning module M 21 -01 9/11

Explosive Environments Risk IEC e-Learning module M 21 -01 10/11

Explosive Environments Risk management • Heavy government regulation • Conflict with WTO objectives • Creation of TBT IEC e-Learning module M 21 -01 10/11

IEC e-Learning module Module 21 – unit 01 Explosive Environments END With thanks to : Mr Michel Brénon Sources : electrical_equipment_in_hazardous_areas-wikipedia IECEx website © IEC 2015

IEC e-Learning module Module 21 – unit 01 Explosive Environments END With thanks to : Mr Michel Brénon Sources : electrical_equipment_in_hazardous_areas-wikipedia IECEx website © IEC 2015