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Legionella bacteria including Legionella
pneumophila are naturally present in the environment and can be
found in all water bodies and soils. Cooling towers and warm water
systems provide ideal conditions for Legionella bacteria to multiply
to significant numbers within the systems. The operation of cooling
towers and warm water systems generate aerosols, which then will
distribute Legionella bacteria present within the systems. People
exposed to the Legionella bacteria containing aerosols then inhale the
aerosols, which then can lead to an infection known as legionellosis.
To reduce the incidence of legionellosis cases,
including Legionnaires’ disease the Victorian Government have
developed a comprehensive strategy, which includes a strengthened
regulatory framework, increased maintenance requirements and new legal
responsibilities for landowners and managers of cooling tower and warm
water systems.
Within the Victorian Governments strategy the
following requirements are summarised from the associated Acts and
regulations – the Building (Legionella) Act 2000, Building
(Legionella Risk Management) Regulations 2001 and Building
(Cooling Tower Systems Register) Regulations 2001.
The Building Act and related regulations require
the owner of the land on which there is a cooling tower system to:
- Register each cooling tower system with the Building Control
Commission annually,
- Develop a Risk Management Plan (RMP) for every cooling tower
system on the site,
The undertaking of a detailed Risk Assessment
is required to determine actual risks associated with the
installed system. The risk assessment will identify the risks
associated to the five key critical risks:
- Stagnant Water
- Nutrient Growth
- Poor Water Quality
- Deficiencies in the cooling tower system
- Location and Access of the cooling tower
The Risk Assessment (RA) will provide a list of
actions required to address the risks associated with the cooling
tower system. It is then a necessary to develop a Risk Management
Plan (RMP) that is based upon the developed RA. The RMP is to
address the critical risks identified in the RA and is to include
details on the actions required and taken to treat the critical
risks.
It is a requirement to review the Risk
Assessment on an annual basis to ensure that the risks identified
in the original RA are being treated and that there is no increase
in risks to the cooling tower system due to structural and/or
operational modifications. The Risk Management Plan will require
amendments to reflect the revised actions arising from the revised
RA.
- Have the RMP audited annually,
Your developed RMP will require an independent
audit to be conducted three months prior to re-registration of
your cooling tower system. Therefore if you have a cooling
tower you will require an audit to be completed prior to
re-registration in 2003. CETEC have two accredited cooling
tower RMP auditors.
Please contact us if you have any questions in
relation to the auditing process, require assistance in the
undertaking of a risk assessment or with the development of a Risk
Management Plan of your cooling tower system.
Cetec Pty Ltd is skilled in conducting Risk
Management Assessments and in formulating Risk Management Plans and if
necessary, can assist with actual Risk Management. We have over 30
years of professional, independent Risk Assessment and Management
experience at your service. Completed projects include:
- Warm Water Systems Legionella Risk Assessment and Management
- Corrosion assessment
- Indoor Air Quality and Environment
- Building Hazard Assessment Audits
- Site risk assessments and management
- Management of stakeholder outrage
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