What Should a Legionella Risk Assessment Contain?
A good Legionella risk assessment should contain as much information about the water system being assessed as possible. The more information that the risk assessment contains the easier and more complete the management of the Legionella exposure risk can be.
As a minimum the risk assessment should contain the following:
- A management assessment to determine if site staff have adequate knowledge and experience to understand and manage the risks of Legionella exposure.
- A management and communication structure for the control of Legionella exposure within company
- A detailed and accurate schematic drawing of the water system to include the following:
- All pipe work including dead and redundant pipe work
- All assets from water storage tanks to wash hand basins
- Source and direction of water flow to assets
- Valves and instrumentation on the water system
- Any chemical/biocide dosing systems present on the system
- Where possible pipe material and size
- Any area of non-conformance to regulations with details
- A detailed assessment of all assets associated with the system, eg.
- Water storage tanks
- Hot water storage vessels/heaters
- Showers
- Sinks
- Process systems
- Fire suppression systems
- All other systems
- An assessment of the water system usage
- An assessment of the types and number of people likely to be exposed to the water systems under review
- A priority based list of remedial work required to ensure compliance with legislation
- A detailed control scheme for the on going control of Legionella exposure
- Photographs of the systems under review with specific emphasis on any systems posing a high risk of Legionella exposure
By ensuring that these items as a minimum have been covered in the risk assessment will allow you to adequately control the risk of exposure to Legionella and will ensure protection from prosecution.
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