Updated: Dec 2009

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The Control of Substances Hazardous to Health Regulation 2002
have been significantly updated, as from
6 April, 2005.  The new focus has been placed on good practice to help employers prevent their employees' health being harmed by the chemicals used in their workplace. There is also a change to the way limits are set for exposure to chemicals in the workplace. (See EH40 below).

What should safety representatives be doing?
     • Ensure you are involved in the COSHH assessment, so that no substance is used without having first been fully assessed.
     • Use your rights to health and safety information to request and take copies of COSHH assessments and   records of monitoring, including the results of local exhaust ventilation tests.
     • Check that measures to first prevent and then control exposure are introduced.
     • Ensure that the employer provides information and training in the risks and alternative means of working with substances hazardous to health.
     • Ask your employer whether there is a COSHH Essentials control solution for the jobs you do. If there is, make sure it is applied.

Statute Links:
The Control of Substances Hazardous to Health Regulations 2002
The Control of Substances Hazardous to Health (Amendment) Regulations 2004
The Control of Lead at Work Regulations 2002
The Control of Asbestos Regulations 2006
Prohibition of Certain Substance Hazardous to Health for Certain Purposes (Statute Schedule)

**  Amendments of the Control of Substances Hazardous to Health Regulations 2002
     i. Occupational Exposure Standards and Maximum Exposure Limits cease to exist and all references to them in
     the Regulations are removed.
     ii. New Workplace Exposure Limits are introduced. A definition is added [Reg 2(1)]
     iii. An amendment to the definition of risk assessment [Reg 2(1)]
     iv. Revision of the definition of adequate control [Reg 7 (7) and 7(8)]
     v. Revision of the requirements for the maintenance of controls [Reg 9(1)]
     vi. New Schedule [2A] covering Principles of Good Practice for the Control of Substances Hazardous to Health


EH40 - Occupational Exposure Limits
The following tables, supplementary information and calculation methods have been extracted from EH40/2005 which contains the list of workplace exposure limits for use with the Control of Substances Hazardous to Health Regulations 2002 (as amended).
     Table 1: COSHH workplace exposure - Table of approved workplace exposure limits, includes additions made to the list in October 2007.  PDF opens in new browser window.
     Table 1: Supplementary information (pdf)
     Table 2: Biological Monitoring Guidance Values (pdf)
     Calculation methods (pdf)
     OELs and the effective control of exposure to substances hazardous to health in the UK (Version 3) (pdf) 

     Substances removed from EH40 - Chemical Hazards Communication Society (pdf)

** CAUTION
•  Suggested limits could give a false sense of security and do not always represent safe conditions.
•  Some argue that many limits are still based upon the questionable Threshold Limit Values, developed many years ago in America.
•  Women may be adversely affected at lower levels than men, and research often concentrates on men rather than women.
•  Some chronic (long-term) effects may be unknown. Limits are often lowered as more information comes to light.
•  Standards do not exist for many potentially harmful substances.
•  Little is known about the effects of mixtures of substances that workers are exposed to.
•  Supposed safe limits sometimes differ between different countries. -
TUC, "Hazards at Work: Organising for Safe and Healthy Workplaces"

Links:
Chemicals and Dust -
an on-line excerpt from the TUC book "Hazards at Work: Organising for Safe and Healthy Workplaces", the best-selling guide to health and safety at work.
Chemical Hazards Handbook - from the London Hazards Centre Trust… Many topics listed - essential reading.  Aimed at trade union safety representatives who deal with chemical safety on a daily basis but who do not have a chemistry background.

Health and Safety Executive (HSE) COSHH Home Page - HERE
Health and Safety Executive (HSE) COSHH Essentials Guidance Publications - HERE - covering:
     Asbestos essentials - A series
     Agriculture: Advice for farmers - AG series
     Brick and tile making: Silica - BK series
     Ceramics: Silica - CR series
     Construction: Silica - CN series
     Foundries: Silica - FD series
     General guidance - G series
     Harm via skin/eye contact - S series
     Machining with metalworking fluids - MW series
     Manufacturing: Silica - MN series
     Printers - P series
     Quarries: Silica - QY series
     Respiratory protective equipment (RPE) - R series
     Service and retail - SR series
     Slate works: Silica - SL series
     Stonemasons: Silica - ST series
     Welding, hot work and allied processes - WL series
     
Advice on COSHH Assessments - Wrexham Council
Asbestos - Amicus Asbestos H&S Page   +    Asbestos - Hazards Magazine
*
Asbestos Hazards Handbook    +    Asbestos - HSE
Asbestos - Mesothelioma Treatment Centers
Asbestos Register - national asbestos database   +   Asbestos - International Ban Asbestos Secretariat
Asthma - HSE Homepage   +   Asthma - Frequently Asked Questions
Asthma - Information Sheet - TUC
Battery Charging - A Multitude of Hazards Toolbox Talk - Toolboxtopics.com
Biocides and Pesticides - HSE
Cancer - Occupational Cancer - HSE   +    Cancer - Occupational Cancer - Hazards Magazine
Chemicals - Free HSE Leaflets
Chemical Exposure Limits - International Labor Organization
Chemicals - Maximum Exposure Limits - Physical and Theoretical Chemistry Laboratory, Oxford University
Chemicals - Common Abbreviations for Chemicals - Oxford University
Chemicals - High Toxicity Chemcials - Oxford University
Chemicals - Known and Suspected Carcinogens - Oxford University
COSHH Essentials: Online Risk Assessment and Advice - HSE
Dermatitis / Eczema - HSE
Dermatitis - Estimated number of cases reported to EPIDERM/OPRA, per 100,000 workers, 2003-05
Dermatitis in the Printing Industry - HSE    Dermatitis in the Workplace - London Hazards Centre Factsheet
Dust - HandS Dust / LEV Section   +   Dust (Including Cotton and Wood Dust) - UnionSafe, Australia
Dust Masks - HSE warns against nuisance dust masks
Formaldehyde - London Hazards Centre Factsheet
Gloves - Chemical Resistant Gloves - Oxford University
Hairdressing & Beauty Salons - Health & Safety Guidance - Devononline.gov.uk
Hairdressing - Dermatitis, Gloves and Cream - HSE
Hazardous Chemical Database - University of Akron
Hazardous Substances - Safety Rep Action - Unison
Indoor Workplace Air Pollution - London Hazards Centre Factsheet
Infectious Diseases in the Workplace - London Hazards Centre Factsheet
** Lead and You - Guide to Working Safely with Lead -- HSE 
(removed - to be revised - see below)
Lead -  NIOSH     +    New Health Dangers from Lead --  California Dept of Public Health (pdf)
Lead Exposure - OSHA  +   Industries and Occupations with High Blood Leads
Lead - Sources of Exposure to Lead - NHS, Scotland
Lead - UK Lead Levels Too High - Hazards Magazine Report (Nov. 2009)
Lead - Channel4 News reports that UK safe lead levels are too high (YouTube)
Legionnaires Disease - HSE
LEV / Local Exhaust Ventilation (HSG37) - Mike Everly,Cambrian Safety Consultancy
Material Safety Data Sheets - Abbreviations Used for Toxicity Data
Material Safety Data Sheets - Meanings of Codes (R23, R45, etc) for Risk Phrases
Material Safety Data Sheets - Meanings of EC Codes (S3, S17, etc) for Safety Phrases
Mercury - OSHA   +   Mercury - Mercury Safety Products Ltd.
Mesothelioma Information - Mesothelioma Information and Treatment Centers
Metalworking Fluids - HSE Homepage   +   Metalworking Fluids - Chemical Hazards Toolbox Talk
Motor Vehicle Repair (MVR) - HSE
Occupational Exposure Limits -- MELs and OESs
Personal Protective Equipment - London Hazards Centre Trust
Pesticides - UK Regulation of Pesticides - HSE (incl. register of approved biocides and pesticide products)

Reproductive Toxicity (pregnancy, breast-feeding, fertility)
Safety Data for Consumer and Industrial Products - Oxford University
Safety Data Sheets (MSDS) - Oxford University  +   Safety Data Sheets for Industrial Gases - BOC
Silica - COSHH Essentials in Ceramics - HSE   +    Silica - Essential guidance publications - HSE
Silica - Amicus Silica H&S Page    +    Amicus/Unite Guide to Controlling Silica Dust (pdf)
Silica Dust / Extraction / Exposure / HSG37 / Airflow / discussion - IOSH Discussion Forum thread
Ventilation - London Hazards Centre Trust  +   Ventilation - Local Extraction for Welding Fume - TWI
Wood Dust - Hazards and Precautions - health&safety.co.uk
Woodworking - Hazards of Exotic Woods and MDF - by Dave Griffin, GMB Safety Rep

Downloads:
COSHH - A Brief Guide to the Regulations  - HSE (pdf)
COSHH Regulations Guide - USDAW (pdf, zipped)
Control of Substances Hazardous to Health Code of Practice - sample, University, Word doc (zipped)
ToolboxTalk - Control Of Substances Hazardous to Health Regulations - Word doc (zipped)
ToolboxTalk - Working With Chemicals And Hazardous Substances - Word doc (zipped)
TUC PowerPoint presentation on dangerous substances and the role of safety reps in dealing with them (ppt)

Asbestos Fact Sheet - Amicus (pdf)
Asthma - Occupational Asthma: TUC Guide for Employers, Workers & Representatives (pdf, 138kb zipped)
Carbon Monoxide in the Workplace - IAPA, Canada (pdf, zipped)

Diesel Exhaust Fumes - Amicus
Dermatitis - Occupational - Occupational Disease Working Group, Ontario (pdf, zipped)
Dermatitis - Preventing Contact Dermatitis at Work - HSE INDG 233 (pdf)
Dermatitis at Work - Unison (pdf)
Fume Control Cupboard - (HSG37) Guidance Sheet 201 - HSE (pdf)
Gloves - Ansell 7th Edition Chemical Resistance Guide (pdf, 287kb zipped)
Lead and You - Guide to Working Safely with Lead -- HSE INDG305 (pdf)
Silica in the Workplace - IAPA, Canada (pdf, zipped, 42pp)
Silica - HSE Information Sheet (pdf)
Silica - Toxic Air Contaminant Identification (carcinogenic) - California Environmental Protection Agency (pdf)
Silica in the Workplace - IAPA, Canada (pdf, zipped, 42pp)
Silica Sand Safety Data Sheet  (pdf)
Control of Exposure to Silica Dust in Small Potteries - HSE (pdf)
Health Effects of Occupational Exposure to Respirable Crystalline Silica -NIOSH Hazard Review (1.2mb, zipped)
Wood - COSHH and the Woodworking Industries - HSE Information Sheet 6 (pdf)
Wood Dust - Hazards and Precautions - HSE Information Sheet 1
Wood Dust Hazards and Controls - Texas Dept of Insurance, Div. Of Worker's Compensation
Wood Dust - Material Safety Data Sheet - TruWood (pdf)
Wood - Toxic Woods - HSE Information Sheet 30 (pdf)
Wood - Dust / LEV / Local Exhaust Ventilation - HSE Information Sheets 23, 24, 25, 26