GENO
®
-flushing compressor 1988 K
Order no. 015 151 963-inter Created: KONS-gmei-mrie G:\BA-151963-INTER_GENO-SPUELKOMP-1988_K.DOC
43
5 | Preparation of the drinking water installation for
disinfection as per DVGW work sheet W 557
Danger!
During disinfection of the system, drinking water is not
available to consumers from the drinking water installation. It must be
ensured that no water intended for drinking can be withdrawn from the
treated system by taking suitable measures. If necessary, drinking water
must be made available from a different source.
Danger!
There must be a sufficient number of personnel available to
perform system disinfection. The personnel must be instructed
beforehand; if necessary suitable safety equipment is to be made
available. Risks due to chemicals are to be avoided by taking suitable
measures.
Note:
Before initiating a disinfection measure, the cause and location of the
contamination must be established as far as possible. System
disinfection is only a long term solution if the causes of contamination
are remedied. Otherwise the success hereof is only short term.
As per DVGW work sheet W 557 the system must always be cleaned
prior to system disinfection. This essentially involves flushing the
piping with a mixture of water/air and cleaning (e.g., descaling ...) the
apparatus and parts.
In order to disinfect all withdrawal points, these must be identified,
documented and made accessible for disinfecting beforehand. An up-
to-date as-completed drawing (revision plan) should be available.
System disinfection places a strain on the component materials used in
the drinking water installation which can result in the installation
being damaged (see W 557 7.5). Regular system disinfection in order
to prevent contamination is thus not recommended. Contaminated
components, e.g., apparatus and fittings, which cannot be disinfected
by taking the designated measure must be removed and either
disinfected separately or replaced. In order to minimise partial material
corrosion, it is recommended that disinfection be performed in stages.
