Legionella - Identify and assess sources of risk

Legionella  - Identify and assess sources of risk

LEGIONELLA - IDENTIFY AND ASSESS SOURCES OF RISK

Carrying out a risk assessment is your responsibility. You may be competent to carry out the assessment yourself but, if not, you should call on help and advice from either within your own organisation or from outside sources, e.g. consultancies.

You or the person responsible for managing risks, need to understand your water systems, the equipment associated with the system such as pumps, heat exchangers, showers etc, and its constituent parts. Identify whether they are likely to create a risk from exposure to legionella, and whether:

·         the water temperature in all or some parts of the system is between 20–45 °C

·         water is stored or re-circulated as part of your system

·         there are sources of nutrients such as rust, sludge, scale, organic matter and biofilms

·         the conditions are likely to encourage bacteria to multiply

·         it is possible for water droplets to be produced and, if so, whether they can be dispersed over a wide area, e.g. showers and aerosols from cooling towers

·         it is likely that any of your employees, residents, visitors etc are more susceptible to infection due to age, illness, a weakened immune system etc and whether they could be exposed to any contaminated water droplets

Your risk assessment should include:

·         management responsibilities, including the name of the competent person and a description of your system

·         competence and training of key personnel

·         any identified potential risk sources

·         any means of preventing the risk or controls in place to control risks

·         monitoring, inspection and maintenance procedures

·         records of the monitoring results and inspection and checks carried out

·         arrangements to review the risk assessment regularly, particularly when there is reason to suspect it is no longer valid  

If you conclude that there is no reasonably foreseeable risk or the risks are low and are being properly managed to comply with the law, your assessment is complete. You may not need to take any further action at this stage, but any existing controls must be maintained and the assessment reviewed regularly in case anything changes in your system.

 

http://www.hse.gov.uk/legionnaires/what-you-must-do.htm

Based on OHSAS 18001 and BS 8800 which are the recognised UK models for Health & Safety Management Systems, Envirochem is able to provide Health & Safety Assessment Services as part of a range of occupational health and safety support services to cover all health and Safety issues.

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