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Information document (part 2) - Exposure to Asbestos from work activities: Advice for employees and members of the public

OC 265/48 Version 3

1 Introduction

1.1  Breathing in asbestos fibres released from disturbed or damaged asbestos containing materials (ACMs) can present a real risk of developing serious diseases, including cancer (mesothelioma and lung cancer) and asbestosis. Since these diseases can take decades to develop the majority of the current cases (including 4000 plus deaths per year) are associated with the very high exposures from past industrial processes and installation of asbestos products.  HSE is now primarily concerned about potentially frequent and regular exposure patterns arising from direct work with ACMs, e.g. during maintenance activities. Such exposures could, over time, lead to a substantial accumulation of fibres in the lungs of some workers (such as electricians, plumbers and carpenters). HSE works with employers, trades unions, trade associations, training organisations and others with the aim of ensuring that current work with asbestos is either prevented or controlled to prevent asbestos related deaths in the future.

1.2  Everyone is continuously exposed to a low level of asbestos fibres to some extent because asbestos was such a widely used material within buildings, machinery, vehicle brakes and homes until 1999, when most forms of asbestos were banned. However, working directly with asbestos containing materials (ACMs) can give personal exposures to airborne asbestos that are much higher than environmental levels. Repeated exposures of this type will give rise to a substantial cumulative exposure, thereby increasing the risk of developing an asbestos related disease in the future.

2 Legal requirements

2.1  To avoid additional exposure caused by work place activities, the law requires:

  • the prevention or control (where prevention is not reasonably practicable) of exposure from work activities, including training of employees and emergency procedures to deal with unplanned disturbance of asbestos;
  • that certain higher risk asbestos work is carried out by those holding an asbestos licence issued by HSE.  HSE’s Infoline service can provide further advice on Tel: 0845 345005;
  • that asbestos materials in workplace buildings must be managed to prevent or control exposure to asbestos;
  • the reporting of a significant uncontrolled disturbance of asbestos (an asbestos incident – see examples in section 3) as a Dangerous Occurrence to HSE’s Incident Contact Centre (ICC), Tel: 0845- 3009923.

2.2  You can find out more about how HSE enforces relevant legislation via the HSE’s asbestos web pages: Asbestos - Enforcement

3  Factors that influence level of risk

3.1  It is often difficult to accurately relate specific asbestos exposures to an increased risk of developing disease in the future. The risk of going on to develop disease will depend on a combination of the following factors:

  1. How many fibres built up in you lungs over your whole lifetime
  2. The type of asbestos involved;
  3. How much time has passed since you were first exposed;
  4. How many asbestos fibres were actually released into the air that you breathed at the time of the exposure.

3.2  The following are examples of uncontrolled activities likely to create a significant concentration of fibres in the air, thereby adding to the risk of developing an asbestos related disease:

  • Use of power tools (to drill, cut etc) on most ACMs;
  • Physical disturbance, such as knocking, breaking, smashing of a licensable ACM e.g. sprayed coating, lagging, asbestos insulating board (AIB);
  • Manually cutting or drilling AIB;
  • Aggressive physical disturbance of asbestos cement (AC), e.g. breaking or smashing.

Any of the work activities listed in paragraph 3.2 could be regarded as Dangerous Occurrences. Your employer should report them to HSE’s Incident Contact Centre (tel: 0845 3009923) where they take place, or are repeated (without effective controls), for more than the periods of time* outlined below:

  • Sprayed coatings (excluding textured decorative coatings) or loose lagging: 15 minutes
  • Insulation: 30 minutes
  • Asbestos insulating board: 60 minutes
  • Asbestos cement: 8 hours.

*The timescales quoted are related to advice given in the previous version of OC 265/48 which stated that exposure would usually have been insufficient to pose a significant long-term risk to health where Action Levels were not exceeded. The Action Levels at that time were defined in the Control of Asbestos at Work Regulations 2002 as being 48 fibres per millilitre of air in a continuous 12 week period for all forms of asbestos and mixtures of asbestos, except chrysotile alone, and 72 fibres per millilitre of air in a continuous 12 week period where the exposure was solely to chrysotile.

3.3  You may be disturbing ACMs without knowing it and therefore be more at risk than you think. The pattern of your exposure to asbestos is a significant factor in determining the degree of risk. The following examples illustrate the main patterns of exposure and their relative risk:

  1. Highest risk – carrying out licensable asbestos work (i.e. work with asbestos materials that give off fibres easily) without suitable controls;
  2. Higher risk – Regularly doing the type of work listed in paragraph 3.2 without suitable precautions in trades such as carpentry, plumbing, electrical, roofing and general maintenance. Your risk of developing disease is increased because a repeated pattern of exposure over time is likely to cause fibres to build up in your lungs;
  3. Lower risk – Working in buildings near ACMs in poor condition that are regularly disturbed releasing significant levels of fibres. Your exposure could also be regular, but is likely to be at a lower level than those in paragraphs a) and b);
  4. Lowest risk – Being in a building when a one-off asbestos incident occurs. Your risk will be lowest because you are not regularly exposed to asbestos.

Remember that the law requires exposure to asbestos to be prevented as far as is reasonably practicable.  When it can’t be avoided strict controls must be in place to reduce exposure levels. As an employee, you must follow the right procedures to protect your family, your colleagues and yourself. Giving up smoking will also reduce your risk of developing an asbestos related disease.

4 Medical examinations and health records

4.1  If you have been involved in an asbestos incident your employer may arrange for you to seek advice from occupational hygienist or an occupational health specialist about the likely exposure levels and associated risks. You are entitled to information about the nature of the incident from your employer and what they have done, or are going to do, to prevent a reoccurrence.

4.2  The law does not require your employer to retain health records for those working with asbestos, unless they carry out work licensed by HSE. Health records for employees of licence-holders should be retained for 40 years. 

4.3  You may wish to consult your GP so that a note can be made on your personal medical record of the possible exposure including date(s), duration, type of fibre and likely exposure levels (if known). GP's no longer routinely carry out x-ray examinations in relation to asbestos exposure because they can only be used to diagnose disease once it has become established (usually 10-40 years after the exposure). An x-ray will not show any fibres present in your lungs after an exposure to asbestos.

5 Further advice and information

5.1  For further information about the law relating to asbestos work contact HSE’s Infoline service on Tel: 0845- 345005.

5.2  HSE does not deal with compensation or the claiming of benefits. If you think that you or a member of your family is entitled to benefits relating to an asbestos related disease you should contact Job Centre Plus on tel: 0800 279 2322 or speak to an adviser from an asbestos support group in your area.

5.3  Information about the current asbestos campaign and practical guidance on controlling exposure (‘Asbestos Essentials Task sheets’) can be found on HSE’s website, along with the following guidance leaflets etc:

  1. A short guide to Managing asbestos in workplace buildings (INDG223) [PDF 182KB]PDF. For those working in building maintenance, repair and refurbishment (available in priced packs of 10).
  2. Free Leaflet ‘Manage Buildings? You must manage asbestos '[PDF 342KB]PDF – A jointly badged leaflet produced by HSE in conjunction with the Trades Union Congress, The Royal Institute of Chartered Surveyors, The Federation of Small Businesses, The Asbestos Testing and Consulting Division of ARCA and The British Institute of Facilities Managers.
  3. INDG 419: ‘Asbestos Kills: Protect Yourself! You are more at risk than you think' [PDF 264KB]PDF – A new leaflet for maintenance workers. 
  4. INDG 418: ‘Asbestos Kills: A Quick Guide to Protecting Yourself [PDF 256KB]’PDF
  5. – A new pocket card for maintenance workers.
  6. Campaign packs produced as part of the HSE’s Asbestos campaign – ‘Asbestos – The Hidden Killer’. The pack is A5, plastic wrapped and contains the new pocket card (INDG 418) and the new leaflet (INDG 419) for maintenance workers on the risks associated with asbestos. It also has a promotional flyer for the revised ‘Asbestos Essentials Task Manual’ (INDG 210) and a covering letter. To order a campaign pack, e-mail HSE Books direct quoting stock code MISC806 or alternatively, you can order via HSE’s Infoline  tel: 0845 345 0055 and/or via the asbestos web pages.
  7. HSG 210 ‘Asbestos essentials Task Manual’ Task Guidance Sheets for the Building maintenance and allied trades (priced publication).
  8. HSG 213 ‘Introduction to Asbestos Essentials: Comprehensive guidance on working with asbestos for the building maintenance and allied trades (priced publication).

    All are available from:
    HSE Books,
    PO Box 1999,
    Sudbury,
    Suffolk,
    CO10 6FS
    Tel: 01787 881165 or Fax: 01787 313995
    Or download/order from www.hse.gov.uk/asbestos