COSHH essentials

 A simplified approach to chemical health risk assessments

 Developed by the British Health and Safety Executive

 Originally intended to be used by small businesses with limited access to expertise

No longer available topurchase as hard copy.Assessments have to becarried out using website

http://www.hse.gov.uk/coshh/essentials/index.htm

Control sheets are alsoavailable on a wide rangeof common industrialprocesses athttp://www.hse.gov.uk/pubns/guidance/index.htm

Specific control sheets arealso available for a wide rangeof common industrialprocesses athttp://www.hse.gov.uk/pubns/guidance/index.htm

The International LaborOrganisation (ILO) hasadopted COSHHEssentials as the basisof their “InternationalChemical ControlToolkit”

http://www.ilo.org/legacy/english/protection/safework/ctrl_banding/toolkit/icct/index.htm

1. Assign hazard group 2. How much is used?3. Determine dustiness / volatility 4. Identify control approach5. Find appropriate control sheets

1. Assign Hazard Group

Hazard group (A to E) depends on“R phrases” assigned by supplierand provided on the label andsafety data sheet

Group “A” represents low hazardGroup “E” for most serious hazards

Additional Group “S” for substancesthat present a skin hazard

A B C D E SR36 R20 R23 R26 R40 Muta cat 3 R21R36/38 R20/21 R23/24 R26/27 R42 R24R38 R20/21/22 R23/24/25 R26/27/28 R42/43 R27R65 R21, R23/25 R26/28 R45 R34R66 R21/22 R24 R27 R46 R35R67 R22 R24/25 R27/28 R49 R36All dusts and R25 R28 R36/37vapours not R34 R40 Carc. Cat. 3, R36/37/38allocated to R35 R48/23 R36/38another band R36/37 R48/23/24 R38 R36/37/38 R48/23/24/25 R41 R37 R48/23/25 R42 R37/38 R48/24 R42/43 R41, R48/24/25 R43 R43, R48/25 R48/21 R48/20 R60, R48/21/22 R48/20/21 R61, R48/22 R48/20/21/22 R62, R48/23 R48/20/22 R63, R48/24 R48/21 R64 R48/24/25 R48/21/22 R48/25 R48/22 R66

1. Assign Hazard Group2. How much is used?

How much is used? Solids LiquidsSmall Grams millilitresMedium Kilograms litresLarge Tonnes Cubic metres

1. Assign Hazard Group 2. How much is used?3. Determine dustiness / volatility

Solids – How dusty?Low Pellet-like solids that dont break up. Little dust visible during useMedium Crystalline, granular solids. When used, dust is seen but settles out quicklyHigh Fine, light powders. When used dust clouds remain in air for some time

Liquids – How volatile? Source: ILO toolkit

1. Assign Hazard Group 2. How much is used?3. Determine dustiness / volatility 4. Identify control approach

Control Approach Source: ILO toolkit

1. Assign Hazard Group 2. How much is used?3. Determine dustiness / volatility 4. Identify control approach5. Find appropriate control sheets

Difficult to obtain otherthan by undertaking anassessment using thewebsite

ILO Task Specific Control Guidance Sheet Source: ILO toolkit

1. Assign Hazard Group 2. How much is used?3. Determine dustiness / volatility 4. Identify control approach5. Find appropriate control sheets

Scenario 1 – Making up slurry fromcerium oxide powder

Scenario 1 – Making up slurry fromcerium oxide powder A few kilograms of powder weighed out about 6 times per day

Scenario 1 – Making up slurry fromcerium oxide powder Added to water and mixed to form slurry which is used to polish glass

Cerium oxide powder Not classified as hazardous Fine, dusty powder

Solids – How dusty?Low Pellet-like solids that dont break up. Little dust visible during useMedium Crystalline, granular solids. When used, dust is seen but settles out quicklyHigh Fine, light powders. When used dust clouds remain in air for some time

Stage 4 – Control Approach Source: ILO toolkit

Scenario 2Cleaning rollers withn-butyl acetate

 Sponge soaked in n-butyl acetate used to clean screen printing rollers Applied manually Operation takes approx. 15 minutes Done about 4 times per day

n-butyl acetate Boiling Point: 124 -128°C R11 - Highly flammable R36 - Irritating to eyes R37 - Irritating to respiratory system

Solids LiquidsSmall Grams millilitresMedium Kilograms litresLarge Tonnes Cubic metres

Liquids – How volatile? Source: ILO toolkit

Liquids – How volatile? Boiling Point: 124 - 128°C Source: ILO toolkit

Stage 4 – Control Approach Source: ILO toolkit

Mike Slater, Diamond Environmental Ltd. (occhygiene@btconnect.com) This presentation is distributed under the Creative Commons Attribution-NonCommercial-ShareAlike UK:International Licence

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COSHH essentials

by Mike Slater

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