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COSHH essentials

Working Group on Action to Control Chemicals

COSHH essentials

INHALATION

EXPOSURE BANDING

AMOUNT DUSTINESS / VOLATILITY

BROAD CONTROL APPROACH + GUIDANCE ON TASK

HAZARD BANDING

Least hazardous

A B C D E

single exposure

Toxic, corrosive, etc.

toxic to reproduction

Asthma, can-cer, genetic damage

R36 R38

No R

R20 R21 R22

R42 R45, R49 R46, R68

R23, 24, 25 R34, 35 R37 R41, R43 R48/20/21/22

R26, 27, 28 R40 carc. R48/23/24/25 R60, 61, 62, 63

COSHH essentials

Skin, eye irritants; unclassified

Most hazardous

S – causes harm in contact with skin and/or eyes

Harmful on Very toxic,

All other R

COSHH essentials

HAZARD BANDS EXPOSURE BANDS

ic, corrosive,skin sensitiser

ion

Amount:

Small - ( l) Medium - ( l) Large - ( )

Dispersion Potential: Low (pellets or BP>150C) Medium (granule or BP 50-150C) High (powder or BP <50C)

INCREASING RISK

A – skin / eye irritant B – harmful C – severe irritant, tox

D – very toxic, harmful to reproductE – cancer, genetic damage, asthma

g, m

kg,

t, m3

< 0.5 ppm< 0.01 mg/m3D

0.5 to 5 ppm0.01 to 0.1 mg/m3C

5 to 50 ppm0.1 to 1 mg/m3B

50 to 500 ppm1 to 10 mg/m3A

Associated exposureAssociated exposureHazard Group

COSHH essentials

band - vapour band - dust

COSHH essentials

Dustiness of solid

Volatility of liquid

Amount

Small

Medium

Large

Low Medium High

Operating temperature (oC)

Boilin

g po

int (

o C)

50

100

150

200

250

300

350

20 50 75 100 150

High Volatility

Medium Volatility

Low Volatility

125

COSHH essentials

COSHH essentials

Hazard Assessment

Collects data: Produces:

(Control Guidance Sheets)

(evidence of assessment)

Control

- unit operation - chemical / product - risk [R] phrases - amount used - volatility / dustiness - process temperature - task duration

- control solutions

- assessment log

COSHH essentials

1. GENERAL VENTILATION

A good standard of general ventilation

4. SPECIAL

3.

2. ENGINEERING CONTROL LEV eg single-point extractor close to source, ventilated partial enclosure.

Least reduction in exposure

Most reduction in exposure

Get advice Expert advice is needed – seek help

CONTAINMENT Enclose or contain – small breaches may be OK

access design and equipment (with illustration) maintenance examination and testing cleaning PPE (plus another sheet for Control Approach ‘S’) training supervision employee checklist

COSHH essentials

COSHH essentials

Limitations: -----

Simplistic Tendency to over-precaution Unsuitable for gases, process emissions, etc. Refers higher risks for expert advice Skin exposure handled poorly

e-COSHH essentials

Internet product (includes Technical Basis)

Release 1: April 2002 Release 2: October 2003

- liquids and solids

- inhalation exposure

Missing: asbestos, lead, gases, skin exposure, other process emissions, RPE, safety, environment, etc.

- rubber, foundry, wood - mixtures - flour, isocyanate in MVR

- commercial and retail - common processes - special advice

e-COSHH essentials

www.coshh-essentials.org.uk Worked examples:

a very large casting 1 – Curtain coating and drying 2 – Spraying

www.coshh-essentials.org.uk 1 – Drying

1 – Drying

1 – Drying

1 – Drying

1 – Drying

Paint

R10 R65

1 – Drying

1 – Drying

1 – Drying

1 – Drying

1 – Drying

1 – Drying

1 – Drying

2 – Spray coating

2 – Spray coating

Home!

2 – Spray coating

2 – Spray coating

2 – Spray coating

2 – Spray coating

2 – Spray coating

2 – Spray coating

2 – Spray coating

e-COSHH essentials

What next?

Respirable crystalline silica Printing

Welding, cutting and allied activities Selection of RPE and PPE

Skin exposure Gases

Asthmagens in agriculture

e-COSHH essentials

Thank you.

Any questions?