Control of Substances Hazardous to Health Regulations 1999, Regulation
7 and 9
Health and Safety at Work etc. Act 1974, Sections 2, 3 and 4
52 - Where the assessment shows that there
is a reasonably foreseeable risk, the use of water systems, parts
of water systems or systems of work that lead to exposure has
to be avoided so far as is reasonably practicable.
53 - Where this is not reasonably practicable,
there should be a written scheme for controlling the risk from
exposure which should be implemented and properly managed. The
scheme should specify measures to be taken to ensure that it remains
effective.
The scheme should include:
(a) an up-to-date plan showing layout of the plant or system,
including parts temporarily out of use (a schematic plan would
suffice);
(b) a description of the correct and safe operation of the
system;
(c) the precautions to be taken;
(d) checks to be carried out to ensure efficacy of scheme and
the frequency of such checks; and
(e) remedial action to be taken in the event that the scheme
is shown not to be effective.
54 - The risk from exposure will normally
be controlled by measures which do not allow the proliferation
of legionella bacteria in the system and reduce exposure to water
droplets and aerosol. Precautions should, where appropriate, include
the following:
(a) controlling the release of water spray;
(b) avoidance of water temperatures and conditions that favour
the proliferation of legionella bacteria and other micro-organisms;
(c) avoidance of water stagnation;
(d) avoidance of the use of materials that harbour bacteria
and other micro-organisms, or provide nutrients for microbial
growth;
(e) maintenance of the cleanliness of the system and the water
in it;
(f) use of water treatment techniques; and
(g) action to ensure the correct and safe operation and maintenance
of the water system.
This document is continued in the next issue of Accepta's newsletter.....
For further information, technical support and advice on all aspects
of Legionella and legislative compliance please call Accepta on
+44 (0) 161 877 2334 or e-mail info@accepta.com.
