COSHH essentials
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Transcript of COSHH essentials
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A simplified approach to chemical
health risk assessments
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Developed by the British Health and
Safety Executive
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Originally intended to be used by
small businesses with limited access
to expertise
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No longer available to purchase as hard copy.
Assessments have to be carried out using website
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http://www.hse.gov.uk/coshh/essentials/index.htm
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Control sheets are also available on a wide range of common industrial processes at http://www.hse.gov.uk/pubns/guidance/index.htm
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Specific control sheets are also available for a wide range of common industrial processes at http://www.hse.gov.uk/pubns/guidance/index.htm
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The International LaborOrganisation (ILO) has adopted COSHH Essentials as the basis of their “International Chemical Control Toolkit”
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http://www.ilo.org/legacy/english/protection/safework/ctrl_banding/toolkit/icct/index.htm
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1. Assign hazard group
2. How much is used?
3. Determine dustiness / volatility
4. Identify control approach
5. Find appropriate control sheets
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1. Assign Hazard Group
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Hazard group (A to E) depends on “R phrases” assigned by supplier and provided on the label and safety data sheet
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Group “A” represents low hazard
Group “E” for most serious hazards
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Additional Group “S” for substances that present a skin hazard
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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1. Assign Hazard Group
2. How much is used?
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How much is used?
Solids Liquids
Small Grams millilitres
Medium Kilograms litres
Large Tonnes Cubic metres
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1. Assign Hazard Group
2. How much is used?
3. Determine dustiness / volatility
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Solids – How dusty?
Low Pellet-like solids that don't break up. Little dust visible during use
Medium Crystalline, granular solids. When used, dust is seen but settles out quickly
High Fine, light powders.When used dust clouds remain in air for some time
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Liquids – How volatile?
Source: ILO toolkit
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1. Assign Hazard Group
2. How much is used?
3. Determine dustiness / volatility
4. Identify control approach
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Control Approach
Source: ILO toolkit
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1. Assign Hazard Group
2. How much is used?
3. Determine dustiness / volatility
4. Identify control approach
5. Find appropriate control sheets
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Difficult to obtain other than by undertaking an assessment using the website
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Source: ILO toolkit
ILO Task Specific Control Guidance Sheet
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ILO Task Specific Control Guidance Sheet
Source: ILO toolkit
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Source: ILO toolkit
ILO Task Specific Control Guidance Sheet
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1. Assign Hazard Group
2. How much is used?
3. Determine dustiness / volatility
4. Identify control approach
5. Find appropriate control sheets
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Scenario 1 – Making up slurry from cerium oxide powder
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Scenario 1 – Making up slurry from cerium oxide powder
A few kilograms of powder weighed out about 6 times per day
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Scenario 1 – Making up slurry from cerium oxide powder
Added to water and mixed to form slurry which is used to polish glass
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Cerium oxide powder
Not classified as hazardous
Fine, dusty powder
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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How much is used?
Solids Liquids
Small Grams millilitres
Medium Kilograms litres
Large Tonnes Cubic metres
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How much is used?
Solids Liquids
Small Grams millilitres
Medium Kilograms litres
Large Tonnes Cubic metres
![Page 42: COSHH essentials](https://reader033.fdocuments.us/reader033/viewer/2022042512/55519bfab4c905013a8b4cd5/html5/thumbnails/42.jpg)
Solids – How dusty?
Low Pellet-like solids that don't break up. Little dust visible during use
Medium Crystalline, granular solids. When used, dust is seen but settles out quickly
High Fine, light powders.When used dust clouds remain in air for some time
![Page 43: COSHH essentials](https://reader033.fdocuments.us/reader033/viewer/2022042512/55519bfab4c905013a8b4cd5/html5/thumbnails/43.jpg)
Solids – How dusty?
Low Pellet-like solids that don't break up. Little dust visible during use
Medium Crystalline, granular solids. When used, dust is seen but settles out quickly
High Fine, light powders.When used dust clouds remain in air for some time
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Scenario 2Cleaning rollers with n-butyl acetate
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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
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n-butyl acetate Boiling Point: 124 -128°C
R11 - Highly flammable
R36 - Irritating to eyes
R37 - Irritating to respiratory system
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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A B C D E SR36
R36/38
R38
R65
R66
R67
All dusts and
vapours not
allocated to
another band
R20
R20/21
R20/21/22
R21,
R21/22
R22
R23
R23/24
R23/24/25
R23/25
R24
R24/25
R25
R34
R35
R36/37
R36/37/38
R37
R37/38
R41,
R43,
R48/20
R48/20/21
R48/20/21/22
R48/20/22
R48/21
R48/21/22
R48/22
R26
R26/27
R26/27/28
R26/28
R27
R27/28
R28
R40 Carc. Cat. 3,
R48/23
R48/23/24
R48/23/24/25
R48/23/25
R48/24
R48/24/25
R48/25
R60,
R61,
R62,
R63,
R64
R40 Muta cat 3
R42
R42/43
R45
R46
R49
R21
R24
R27
R34
R35
R36
R36/37
R36/37/38
R36/38
R38
R41
R42
R42/43
R43
R48/21
R48/21/22
R48/22
R48/23
R48/24
R48/24/25
R48/25
R66
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How much is used?
Solids Liquids
Small Grams millilitres
Medium Kilograms litres
Large Tonnes Cubic metres
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Solids Liquids
Small Grams millilitres
Medium Kilograms litres
Large Tonnes Cubic metres
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Liquids – How volatile?
Source: ILO toolkit
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Liquids – How volatile?
Source: ILO toolkit
Boiling Point: 124 - 128°C
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Stage 4 – Control Approach
Source: ILO toolkit
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Mike Slater, Diamond Environmental Ltd. ([email protected])
This presentation is distributed under the Creative CommonsAttribution-NonCommercial-ShareAlike
UK:International Licence