Editorial
Reducing the risk of infection of Legionnaires' disease
September 2002
Sheila Pantry, OBE
The recent, tragic outbreak of Legionnaires' disease in a couple of
locations in the UK, has once again highlighted the importance of
regular maintenance and testing of air conditioning systems. The UK
Health and Safety Commission (HSC) guidelines on legionella require that
specific, weekly tests be carried out on all potential sources of
infection.
The HSC's Approved Code of Practice and guidance, published last
year[1], recognises that an important method of
reducing the risk of infection is a comprehensive monitoring programme
and, along with specific monthly and quarterly tests, requires
conductivity, bacteria, disinfectant and pH to be tested weekly.
This Code applies to the risk from legionella bacteria (the causative
agent of legionellosis including Legionnaires' disease) in circumstances
where the Health and Safety at Work etc Act 1974 applies. To comply with
their legal duties, UK employers and those with responsibilities for the
control of premises should:
- identify and assess sources of risk - this includes checking
whether conditions are present which will encourage bacteria to
multiply, e.g. is the water temperature between 20-45°C; there is a
means of creating and disseminating breathable droplets, e.g. the
aerosol created by a shower or cooling tower; and if there are
susceptible people who may be exposed to the contaminated aerosols;
- prepare a scheme for preventing or controlling the risk;
- implement, manage and monitor precautions - if control measures
are to remain effective, then regular monitoring of the systems and
the control measures is essential. Monitoring of general bacterial
numbers can indicate whether microbiological control is being
achieved. Sampling for legionella is another means of checking that
a system is under control;
- keep records of the precautions; and
- appoint a person to be managerially responsible.
The Code and guidance also set out the responsibilities of suppliers
of services such as water treatment and maintenance as well as the
responsibilities of manufacturers, importers, suppliers and installers.
There are also many good pieces of advice to be found on websites
such as OSHWORLD and also in the health and safety collections of
information such as OSH-ROM
which continues to grow as it has done for over 16 years. The references
and abstracts in OSH-ROM give access to quality information to help all
those seeking good advice and guidance. A 30 day free trial is
available. Contact Safchem Services, The Farthings, Meesden, Buntingford, HERTS SG9 0BA, UK, Telephone: +44 (0) 1279 778971, Web:
www.safchemhaz.co.uk
This month's FOCUS
article is about The European Week for Safety and Health Campaign
on Working on Stress which takes place throughout Europe next
month - October. Member States can choose which week to campaign.
Work-related stress is now Europe's second biggest reported
occupational health problem, after back pain, affecting up to one third
of all workers and costing the EU billions of euros every year in lost
work and health costs.
As always OSHWORLD's regular pages are constantly updated, with new
events planned as far ahead as 2005 in the Diary
of Events which lists training courses, symposiums and conferences
in many places in the world on a wide range of subjects. Remember that
even if you cannot attend these many events, speakers and organisers are
often willing to share their knowledge. Look at the details - where
possible I add in the web sites of these events so you can request
further information. And do let me know if you are organising any
occupational safety, health, and environment events so that I can add
them to the Diary.
Globally there are continually new titles, news items, new products
so remember to look at the News
to find the latest information. Use OSHWORLD as your portal to many
hundreds of validated and authoritative web sites which you can find in
the Country and Subject links we offer. New subject topics are
constantly brought together on web sites, e.g. anthrax and
bio-monitoring.
Some of the longer standing sites have been built up and now contain
vast amounts of information on specific topics, and it is not always
apparent that some "nuggets of gold" are available. OSHWORLD
goes "data mining" looking for such topics and you will see
many entries in the subject links which will take you to these topics.
All links are constantly checked to ensure that no "orphan"
links exist. And you work smarter not harder if you bookmark
OSHWORLD.... we do the checking for you!
Most information services have a reference shelf where you can
quickly check the reference sources - so OSHWORLD brings you a
collection of Reference sources.
Remember to look at the Products and Services on this web site and
see what is new and updated, such as OSH-Ireland
which will help all those either working in Ireland or seeking guidance,
advice, good practices, standard specifications, knowledge of
legislation and also what is being published worldwide. There is an ever
increasing range of full text information now in OSH-Ireland. See for
yourself and take a free 30 trial - either via the Internet on on
CD-ROM.
Click onto the various Bookshops
to order any new document as they are being published. Many of these
Bookshops such as H&H
Scientific Information Ltd have a constant stream of new titles
available.
Please send any suggestions or comments about OSHWORLD - your portal
to validated and authoritative information.
Remind everyone to make 2002 a zero accident and incident-free
year in your workplace. And every success to all those taking part in The
European Week for Safety and Health Campaign on Working on Stress
Reference
[1] Health and Safety Commission
Legionnaires' disease : the control of legionella bacteria in water
systems. Approved Code of Practice and guidance. 2001
Third edition London ; Sheffield : HSE Books
Legislation (L) series; L 8 ISBN
0717617726
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