Fire Chapter 1

Information about Fire Chapter 1

Published on July 28, 2014

Author: pthomp

Source: authorstream.com

Content

PowerPoint Presentation: Fire, Explosions and Process Safety INTRODUCTION TO THE CONCEPTS OF FIRE SAFETY Dr Pauline Thompson PowerPoint Presentation: Purpose To understand how fires work so future systems designed to control risks Objectives of fire safety decision-making are to prevent: Life loss and injury Property damage Disruption of operation To achieve acceptable levels wrt these criteria What is acceptable?! PowerPoint Presentation: Statistics Many similar statistics: PowerPoint Presentation: Orders of magnitude Only 20-30 % of fatalities caused by exposure to heat/flame PowerPoint Presentation: Fire as a system Fire is a chemical reaction but it is important to consider fire as part of system The following slides are extracts from the RASM course where the risk is more general – here we are focussing on Fire risk PowerPoint Presentation: Risk as a system E.g. toxicity, fire resistance, physical barriers E.g. what is acceptable?, time pressures, political pressures E.g. personal emergency actions, psychology PowerPoint Presentation: A fire in a bin in the centre of the room vs in a corner Polystyrene pellets in a pile vs in a cardboard box A fire in a plastic vs a metal bin https://www.youtube.com/watch?v=glONB84c08s Risk as a system - Examples PowerPoint Presentation: Coal dust as a layer vs dispersed in air Video showing suppression system for coal dust explosion https:// www.youtube.com/watch?v=8p9HxH3Iht8 Technical explanation http://www.energyglobal.com/news/coal/articles/New_technology_suppresses_coal_dust_explosion_203.aspx#. U4hn2fldX9V Powder fire used for special effects https :// www.youtube.com/watch?v=TAdElO1FCSM Risk as a system - Examples PowerPoint Presentation: Piper Alpha – explosion in one module caused fire in adjacent module with insufficient blast proof walls – poor design Risk as a system - Examples PowerPoint Presentation: Polyurethane foam – now banned in furniture Video comparing insulation materials https:// www.youtube.com/watch?v=8NC79e0oztM Standard PUF burning https:// www.youtube.com/watch?v=zWuGfg_q4P8 News about Rhode Island nightclub fire – PUF insulation http:// www.acousticsfirst.com/acoustical-foam-flamibility-fire-ratings.htm Risk as a system - Examples PowerPoint Presentation: Summary Cost of fire is significant = effects on human health, loss of property and operation Purpose = aid the decision-making process to control the risk of loss or damage to human life and property. Fire risk = combination of many factors in a system. ‘Hard ’ physical factors and ‘Soft ’ factors involving human behaviour and decisions. “What is an acceptable fire risk?”. What is acceptable depends upon the viewpoint of the person. PowerPoint Presentation: Discussion Questions Now we recommend: Read through these sections in the notes Tackle the discussion the questions at the end Work with your fellow students on the discussion boards PowerPoint Presentation: Any Questions ? If so – post them in the discussion boards

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