Fire Safety Training Environmental and Occupational Health Support Services Wentworth House, Room...
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Transcript of Fire Safety Training Environmental and Occupational Health Support Services Wentworth House, Room...
Fire Safety Training
Environmental and Occupational
Health Support Services
Wentworth House, Room 115
Ext 24352
The Fire Triangle
All three elements are needed to start a fire. To extinguish a fire, one side must be removed.
Oxy
gen H
eat
Fuel
Chemical Reaction
Types of Fuel
Regular Flammables – paper, wood
Liquid Flammables – Gasoline, paint thinner
Electrical – Anything that is plugged in
Metals – Potassium, sodium. Typically found in a lab setting.
Types of ExtinguishersThree main types
Water (APW)– Class A fires only
CO2 – Class B and C fires only
Dry Chemical - For ABC or BC fires
D class extinguishers are typically specific to the fuel
• Extremely Toxic• Spreads Rapidly• Displaces Oxygen• People Become:
disoriented impaired blinded confused
SMOKE
Using the Extinguisher
P.A.S.S. P
A
S
S
ull the pin
im at the base
queeze the lever
weep from side to side
•Leave the building immediately!• •Testing is posted on a yellow sign at your main entrance.
•You will see fire wardens identified by a bright orange vest. Follow their direction and report any pertinent information.
• Re-Entry is authorized by the Fire Department only. Be Certain the building as been cleared for entry.
EVACUATION
Static ElectricityStatic Electricity may become a serious hazard if:
A static electric charge is generated under the operating conditions
The charge is accumulative
Discharges will cause a spark
There is an ignitable mixture (e.g., solvent vapour or dust in the air) in the area where a static electricity discharge occurs
The discharge generates an incendive spark, i.e. a spark that has enough energy to ignite the mixture in air
Where a solvent or fuel is used, then static electricity can be a fire / explosion hazard
http://www.ccohs.ca/oshanswers/prevention/flammable_static.html
Static Electricity cont’d Flammable and combustible liquids become hazardous depending on
their ability to generate static electricity, their ability to conduct electricity (conductivity), and their flashpoint.
Ignition sources: Sparks
•Electric tools•Welding/Cutting•Grinding/Crushing•Rotating belts
Open Flames•Portable torches•Heating units•Boilers & Pilot lights•Ovens & Driers
www/ccohs.ca/oshanswers/prevention/flammable_static.html
Bonding and GroundingDefined: Providing an electrically conductive pathway between a
dispensing container, a receiving container, and an earth ground.
Complete Bonding and Grounding System
http://www.labsafety.com/refinfo/ezfacts/ezf255.htm
Bonding and Grounding Liquids with a flash point lower than 37.8 °C need to be bonded and
grounded during dispensing.
If the containers are not properly bonded and grounded, the resulting static spark could be capable of raising the flash point, causing an explosion.
Electric charges can build up in flammable liquids when the liquids flow through piping systems or when they are agitated in their storage containers as a result of mechanical movement or splashing.
The proper bonding and grounding of the piping system is enough to control this static build-up.
http://www.gov.mb.ca/labour/safety/pdf/staticsituations.pdf
http://www.labsafety.com/store/dept.asp?dept_id=5688
How to Stay Safe
1) Reduce flow rates
2) Avoid splashing in tank
3) Allow for “relaxation” time
4) Check that bonding and grounding cables/clamps/conductors are in good condition
http://www.ccohs.ca/oshanswers/prevention/flammable_static.html
Recent Fires on CampusLab Fire 2005/04/04
Electrical Fire 2005/05/16
Questions??Questions??
Contact us at ext. 24352Contact us at ext. 24352
Visit us at Wentworth House room 115Visit us at Wentworth House room 115
Visit us at our websiteVisit us at our website
www.workingatmcmaster.ca/eohsswww.workingatmcmaster.ca/eohss
Safety is No Accident