Upload
mayisha-fabliha
View
14
Download
0
Tags:
Embed Size (px)
DESCRIPTION
WHMIS Notes
Citation preview
1Workplace Hazardous Materials Information System
Canadas Hazard Communication Standard
Environmental Health & Safety
WHMIS
ObjectiveTo ensure the protection of workers from the adverse effects of hazardous materials through the promotion of access to health and safety information on Controlled & Hazardous Products
Quebec Legislation
No employer may allow the use, handling or storage of a Controlled Product in a workplace unless the product carries a label and a material safety data sheet which meet the requirements of this Act and the regulations and unless the worker has received the training and information required to carry out the work entrusted to him safely
An Act respecting occupational health & safety R.S.Q., S-2.1
WHMIS Key Elements
Worker training programs Core (EHS) Job Specific (Supervisor)
Cautionary labeling of containers Supplier Labels Workplace Labels Laboratory Labels
Material Safety Data Sheets (MSDS)
2Outline
WHMIS Classes Risks Precautions
Labeling Material Safety Data
Sheets (MSDS)
WHMIS Classes & Pictograms
C
E
BA
F
B1, B2, B3, B4, B5, B6
D
D1AD1B
D2AD2B
D3
Class ACompressed Gas
Class ACompressed Gas
3Class ACompressed Gas
Products under pressure or chilled Compressed Gases
~ Helium~ Oxygen~ Argon
Liquefied gases~ Carbon dioxide~ Liquid nitrogen ~ Cryogenic liquids
Class ACompressed Gas
Risks Fire and explosion hazards
~ Flammable gases ~ Cylinder can explode if heated
Sudden release creates a stream that can puncture skin
May rocket or torpedo if damaged
Class ACompressed Gas
Risks Exposure
~ Toxic~ Asphyxiation
Liquefied gases~ Extreme Cold
Rapid frost burn
Class ACompressed Gas
Precautions Transport & handle with
care Secure to a structural
component Store away from heat
sources Use proper regulator Use proper protective
equipment
4Cryogenic Fluids
Characteristics Boiling points > -150C
Examples: liquid nitrogen, slushmixtures of dry ice with solvents
Causes cold burns and frostbite Small amounts produce large
volumes of gas by rapidevaporation.This can lower the availableoxygen in the immediate areathus creating an oxygendeficient atmosphere
Cryogenic Fluids
Precautions Wear appropriate personal protective equipment
when handling and transferring cryogenic liquids Insulated gloves Safety glasses and face shield Lab coat
Fill containers to indicated maximum level
Perform operations (pouring) slowly
Class BFlammable & Combustible
Acetone
Methanol
Class BFlammable & Combustible
May burn, catch fire or explode when exposed to heat, sparks or flames
University of California Santa Cruz
11-Jan-2002 Depart. of Molecular, Cell and Developmental Biology
5Class BFlammable & Combustible
B1 Flammable gases Methane
B2 Flammable liquids (Flashpoint < 37.8C) Ethanol, Methanol, Toluene, Xylene, Ethyl Ether
B3 Combustible liquids (37.8C Flashpoint 93.3C) Acetic acid glacial, Isoamyl alcohol, -Mercaptoethanol
B4 Flammable solids Nitrocellulose, Paraformaldehyde
B5 Flammable aerosols Spray paint
B6 Reactive flammable materials Potassium, Lithium Hydride, Magnesium, Sodium
Class BFlammable & Combustible
Flammable Burns at room temperature
~ ethyl ether, acetone, ethanol
Combustible Burns when heated
~ Kerosene, varsol
Demonstration
Flammable Material
1-litre Ethyl Ether
Class BFlammable & Combustible
Demonstration
Combustible Material
Class BFlammable & Combustible
Kerosene at room temperature
6Demonstration
Combustible Material
Class BFlammable & Combustible
Kerosene at an elevated temperature
Flash Point
The lowest temperature at which a liquid produces enough vapour to ignite in the presence of a source of ignition.
The lower the flash point, the greater the risk of fire.
Flash Point
acetone - 18Cether (diethyl) - 45Cnatural gas - 88Cethyl alcohol 13Cmethyl alcohol 11Cgasoline - 43Cvarsol 40C
Which presents the greatest risk
of fire?
Precautions Keep from heat sources
~ Flammable Storage Cabinets
Avoid incompatibilities~ Class C Oxidizing Materials
Permissible container size Use fume hood Use proper protective
equipment
Class BFlammable & Combustible
7Class BFlammable & Combustible
Precautions Unattended
experiments Do not store
flammables in domestic freezers or refrigerators
Montreal Neurological Institute
Class BFlammable & Combustible
1 Dead in lab explosionMulhouse, France March 24, 2006
EXPLOSION 1 professor killed 1 student severely injured $130 million in damage
CAUSE Residue of flammable gas in a
pressure vessel
Source: NATURE Vol. 441.1 June 2006 Photo: AP Photos
Closer to home9-Nov-06 Dept. of Chemistry
In setting up a reaction, a hotplate with an acetone bath on it was inadvertently turned on. The acetone caught fire and was rapidly
extinguished by a colleague.
What factors contributed to the event?Not monitoring the procedure
Inappropriate choice of apparatus
8Class COxidizing Material
Causes other materials to burn or explode by providing oxygen Gases, liquids or solid
~ Ammonium nitrate ~ Nitric acid~ Perchloric Acid Solutions~ Oxygen
Organic Peroxides~ Extremely hazardous
Demonstration
Class COxidizing Material
* Source of ignition not always necessary
Health Hazards May be toxic or corrosive
Precautions Keep away from heat sources Incompatibilities
~ Class B - Flammable & Combustible Material
Use fume hood if required Use proper protective equipment
Class COxidizing Material
Peroxide-forming chemicals Form explosive peroxide crystals that can violently
detonate under thermal or mechanical shock~ When stored
Isopropyl ether, vinylidene chloride~ When concentrated
Ethyl ether, tetrahydrofuran, p-dioxane
Class COxidizing Material
Texas Tech University 15-Jan-01
Risk when concentrated~ Evaporation & Distillation
Expiry Dates~ Do not handle the container
9Class DPoisonous & Infectious Materials
Division 1 Materials Causing Immediate
and Serious Toxic Effects
Division 2 Materials Causing Other Toxic
Effects
Division 3 Biohazardous Infectious Materials
Class D - Division 1Materials Causing Immediate & Serious Toxic Effects
May cause immediate death or serious injury if inhaled, swallowed, or absorbed through the skin D1A & D1B
~ Hydrogen cyanide~ Carbon monoxide~ Sulfuric acid
Class D - Division 2Materials Causing Other Toxic Effects
Products whose health effects generally appear over time following one or several exposures D2A & D2B
~ Acetaldehyde~ Lead ~ Calcium chloride~ Triethanolamine~ Formaldehyde
Health Hazards May irritate eyes, skin and
respiratory tract~ Leading to sensitization and/or
chronic lung problems
May cause major organ damage, cancer, birth defects, mutagenic, sterility, etc.
May cause permanent injury and death
Class DDivision 1 & 2
10
Location Liquids
~ Storage Cabinets Flammables Corrosives
~ Laboratory Shelves
Solids~ Laboratory Shelves
Class DDivision 1 & 2
Class DDivision 1 & 2
Precautions: Minimize exposure! Use fume hood if required Use proper protective equipment No food or drink in work areas Good personal hygiene
~ Wash hands after handling and before leaving
Class D, Division 3Biohazardous Infectious Material
Class D, Division 3Biohazardous Infectious Material
Organisms or their toxins that can cause disease in people or animals Bacteria (Pseudomonas aeruginosa) Viruses (Hepatitis B, HIV) Recombinant nucleic acid Fungi (Candida albicans) Toxins (Botulinum)
11
Precautions Protect skin and eyes Handle in designated areas
~ Culture Rooms~ Biological Safety Cabinets
Disinfect your workspace Practice good personal hygiene No food or drink in work areas Advise supervisor of medical conditions Labeled storage - refrigerators and freezers
Class D, Division 3Biohazardous Infectious Material
Class ECorrosive Material
Cause severe burns to skin, eyes and other tissues Will burn respiratory tract if inhaled
Can attack other materials, including metal Sulfuric Acid Hydrochloric Acid Sodium Hydroxide Phenol
Class ECorrosive Material
Precautions Use in fume hood if required Use proper protective equipment
~ Protect skin and eyes
Store appropriately~ Store acids and bases in
separate areas~ Not under the sink!
Pour chemicals properly~ Pour acid into water
Class ECorrosive Material
Incompatibilities within Acids Organic Acids
~ Acetic Acid
Oxidizing Acids~ Nitric acid
Special consideration Perchloric acid Hydrofluoric acid Picric acid
12
Class FDangerously Reactive Material
Unstable and react quickly and dangerously Water, heat, pressure, impact, exposure to light
or itself~ Sodium~ Vinyl Chloride (monomer)
Class FDangerously Reactive Material
Risks May combust under conditions of shock, friction
or increase pressure or temperature~ Organic peroxides~ con. Hydrogen peroxide~ Dry picric acid
May produce dangerous gases ~ Water & alkali metal
cyanides University of Southampton 31-Oct-05School of Electronics and Computer Science
Demonstration
1 oz (28.3 g) Sodium Metal
Class FDangerously Reactive Material
Precautions Store away from the conditions
that can set it off Isolate to avoid shock and
friction Use proper protective equipment Expiration dates Monitor containers
Class FDangerously Reactive Material
13
Lab SafetyChemical Storage
Lab SafetyChemical Storage
Ethanol20 liters
Lab SafetyChemical Segregation
Hydrochloric acidMethanol
Nitric acid
Sulphuric acid
Lab Safety
14
Skin Absorption
Ingestion
Inhalation
Injection
Routes of Entry Lab SafetyPersonal Protective Equipment Skin Protection
Gloves Eye Protection
Safety glasses Goggles Face shield
Appropriate Clothing Lab coat Closed shoes No exposed skin
McGill PolicyPersonal Protective Equipment
Downtown CampusJuly 2008
Student splashed in the eye with agarose solution containing ethidium bromide.
Student splashed in the eye with tissue culture.
Root cause: Improper use of equipment and manipulation
Corrective actions: Be more carefulBuy new equipment
15
Downtown CampusJuly 2008
WEAR SAFETY GLASSES
Courtesy of
University of Ottawa
Why wear PPE?
Courtesy of University of Ottawa
Unexpected poison leaves 1 deadJune 1997 Dartmouth College
A toxic-metals expert spilled a couple of drops of dimethyl mercury on her hand and quickly cleaned it up and assumed that her latex gloves had stopped the toxic chemical reaching her skin.
Five months after the accident, she was having difficulty walking and her speech started to slur. Tests later showed that she had 80 times the lethal dose of mercury in her blood. After losing her vision and hearing, she slipped into a coma and died in June 1997, aged 48.
Source: Edited from NATURE|Vol 441|1 June 2006
Lab SafetyPersonal Protective Equipment
16
WHMIS Labeling
Suppliers Labels Original container
Workplace Labels Created at workplace
WHMIS Labeling
Supplier Label
Product Name
Supplier InfoMSDS
ReferenceWHMIS
Pictogram
Risk PhrasesPrecautions
First Aid
Workplace Labels
Required On controlled products
produced and used in the workplace
If the supplier label becomes illegible or defaced
When transferring into another container
17
Workplace Label
Toluene Keep container in a well-
ventilated place, away from heat and all sources of ignition.
Wear eye protection.
Avoid contact with skin.
Do not inhale vapours.
For more information refer to products Material Safety Data Sheet
Product Name
Reference to MSDS
Precautions
Workplace LabelsResearch Laboratories
Label Requirements Product Name Abbreviations NOT permitted
Additional Requirements MSDS must be available Not to be transported out of
laboratory
Workplace LabelsResearch Laboratories Safety Information
18
Material Safety Data Sheets
Suppliers prepare and provide Employers ensure:
Available and accessible to ALL workers
Up-to-date (3 years) Important:
Bring to doctor in the event of exposure
Material Safety Data Sheets
1. Product and Company Identification2. Composition / Information on Ingredients3. Hazards Identification4. First Aid Measures5. Fire Fighting Measures6. Accidental Release Measures7. Handling and Storage8. Exposure Controls / Personal Protection9. Physical and Chemical Properties10. Stability and Reactivity11. Toxicological Information12. Ecological Information13. Disposal Considerations14. Transport Information15. Regulatory Information16. Other Information
Material Safety Data Sheets
McGill Emergency Number:
Downtown ext. 3000; Macdonald ext. 7777 or MNI ext. 55-555
Material Safety Data Sheets
19
Material Safety Data Sheets Material Safety Data Sheets
Material Safety Data Sheets Material Safety Data Sheets
McGill Emergency Number:
Downtown ext. 3000; Macdonald ext. 7777 or MNI ext. 55-555
20
Material Safety Data Sheets Material Safety Data Sheets
Material Safety Data Sheets Material Safety Data Sheets
21
Material Safety Data Sheets Permissible Exposure
Threshold Limit Value (TLV) Defined concentrations which most workers can
be exposed to without harmful effects. Time-Weighed Average (TWA)
~ 8 hour workday
Short-term Exposure Limit (STEL)~ 15 minutes
Ceiling Value (C)~ Maximum concentration never to be exceeded
LD50 & LC50
Lethal Dose: LD50 The amount of a substance that, when
administered (oral or dermal) over a specified period of time, is expected to kill 50 per cent of a defined animal population.
Lethal Concentration: LC50 The amount of a substance in air that, when
inhaled over a specified period of time, is expected to kill 50 per cent of a defined animal population.
Material Safety Data Sheets
22
Material Safety Data Sheets
Contact Hazardous Waste Management (5066)
MNI See MNI Lab Safety Manual
Material Safety Data Sheets
Material Safety Data Sheets Material Safety Data Sheets
23
Material Safety Data Sheets
http://www.mcgill.ca/ehs/forms/references/links/
Material Safety Data SheetsInfectious Substances
http://www.mcgill.ca/ehs/forms/references/links/
www.mcgill.ca/ehs/mylab
Web based compliance tool Maintains hazardous material
inventories Allows shared inventories Inventory linked to MSDS service
(3E Inc.) Critical emergency response
information
www.mcgill.ca/ehs/mylab
24
Globally Harmonized System (GHS)
Will replace WHMIS New system for classifying hazardous chemicals Groups chemicals into 3 groups:
Physical Hazards Health Hazards Environmental Hazards
Appearance of labels & MSDS will change but not the content
Aimed at: workers, transport workers, emergency responders and consumers.
Questions?
www.mcgill.ca/ehs