REMS Multi-Push S Betriebsanleitung Seite 31

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concentration for hydrogen peroxide is 150 mg H
hours. Appendix A contains further information about these disinfection chemicals,
e.g. about application and work safety. Appendix B contains statements on the
material resistance to the recommended disinfection chemicals.
Information leaflet "Flushing, disinfection and commissioning of drinking
5)
water installations" (August 2014) of the German Central Association for
Sanitary, Heating and Air Conditioning (ZVSHK)
For Germany, the information leaflet "Flushing, disinfection and commissioning of
drinking water installations" (new version August 2014) of the Central Association
for Sanitary, Heating, Air Conditioning (ZVSHK), Germany, contains the originally
defined methods for flushing and disinfecting drinking water installations. These are
largely confirmed by EN 806-4:2010 and the Technical Rule - Worksheet DVGW W
557 (A) October 2012 of the DVGW German Gas and Water Association. It deals
in particular with additional chemical disinfectants and describes thermal disinfection.
Technical Rules for Gas Installations
6)
European standard EN 1775:2007 "Gas supply – gas pipe systems for buildings"
This European standard EN 1775:2007 "Gas supply – gas pipe systems for buildings"
cites in section 6 Testing 6.1.1 "New pipe systems or every existing pipe system on
which work was carried out as described in 8.5, may only be put or put back into
operation when the test prescribed in section 6 have been conducted successfully."
Air is recommended to be used preferably as a test medium. A strength test as a
function of the maximum permissible operating pressure MOP is demanded followed
by a leak test. "The applied leak test pressure must be:
– at least equal to the operating pressure;
– usually not higher than 150 % of the MOP, providing that the MOP is above 0.1 bar."
"For pipe systems with an MOP ≤ 0.1 bar, the leak test pressure may not be
> 150 mbar."
The users of this European standard must be aware that detailed national standards
and/or Technical Rules can exist in the CEN member states. In case of contradictions
due to more restrictive requirements in national laws/regulations than in this standard,
national laws/regulations have priority as explained in the CEN Technical Report
CEN/TR 13737.
Technical Rule – Worksheet G 600 April 2018 (DVGW-TRGI 2018) of the
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DVGW German Gas and Water Association
For Germany, the Technical Rule – Worksheet G 600 April 2018 (DVGW-TRGI 2018)
"Technical rule for gas installations" of the DVGW German Gas and Water Associ-
ation, must be observed.
Section 5.6.2 "Safety measures during the tests" defines: "The max. test pressure
may not exceed the value of 3 bar. According to section 5.6.3 the tests may be
carried out optionally with compressed air. The following applies according to section
5.6.4: "Pipe systems with operating pressures up to and including 100 mbar are
subjected to the following tests:
a) Load test
b) Leak test
c) Usefulness test for systems in operation"
The usefulness test cannot be carried out with REMS Multi-Push.
Industrial liability insurance association rule "Operation of work equipment",
8)
BGR 500, April 2008, chap. 2.31, Working on gas pipes
This rule of the legal German accident insurance must be observed for Germany.
For Germany the information leaflet "Leak Tests of Drinking Water Installations
9)
with Compressed Air, Inert Gas or Water" (January 2011) of the German Central
Association for Sanitary, Heating and Air Conditioning (ZVSHK) defines the following
for the national regulations under "3.1 General":
"Due to the compressibility of gases, the rules for the prevention of accidents "Working
on Gas Systems" and the "Technical Rules for Gas Installations DVGW-TRGI" must
be observed for physical and safety reasons when conducting pressure tests with
air Therefore, the test pressures have been defined as maximum 0.3 MPa/3 bar/43.5
psi, the same as for load and leak tests for gas pipes, in agreement with the respon-
sible industrial liability insurance association and based on these rules. The national
regulations are thereby fulfilled."
European standard EN 806-4:2010 cites on the "Selection of disinfectants"
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"Drinking water installations may be disinfected after flushing if this is prescribed by
a responsible person or authority."
"All chemicals that are used for the disinfection of drinking water installations must
meet the requirements for chemicals for water treatment which are specified in
European standards or, if European standards are not applicable, in national stand-
ards and technical rules."
"Disinfectants must be used and applied in agreement with the appropriate EC
directives and all local or national regulations."
"Transport, storage, handling and use of all these disinfectants can be dangerous,
therefore health and safety regulations must be strictly observed."
Technical Rules Worksheet DVGW W 557 (A) October 2012 of the DVGW
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German Gas and Water Association and in the information leaflet "Flushing,
disinfection and commissioning of drinking water installations" (August 2014)
of the Central Association for Sanitary, Heating, Air Conditioning (ZVSHK),
Germany.
For Germany, the technical rule for gas installations "Technical Rule Worksheet
12)
G 600 April 2018 DVGW-TRGI 2018" of the DVGW German Gas and Water Asso-
ciation defines the following among other things:
O /l and the exposure time 24
2 2
"5.6.2 Safety measures during the tests
Safety measures may need to be taken during the tests when carrying out the load
test due to the compressibility of gases. The max. test pressure may not exceed
the value of 3 bar.
Every sudden rise in pressure in the pipe system to be tested must be avoided."
"5.6.3 Test media
"The tests in accordance with [...] can be carried out optionally with air or inert gas
(e.g. nitrogen).
[...]
The use of oxygen is not permitted." (The test with inert gases cannot be carried
out with REMS Multi-Push).
"5.6.4 Pipe systems with operating pressures up to and including 100 mbar
[...] are subjected to the following tests:
a) Load test
b) Leak test
c) Usefulness test for systems in operation" (this cannot be carried out with REMS
Multi-Push).
"5.6.4.1 Load test
The load test must be carried out before the leak test [...]
[...]
The test pressure is 1 bar and may not drop during the test time of 10 minutes. The
measuring instrument must have a minimum resolution of 0.1 bar".
"5.6.4.2 Leak test
[The leak test must be carried out after the load test] [...]" "The test pressure must
be 150 mbar and may not drop for the duration of the test." The test duration and
adaptation times for the temperature compensation depending on the pipe volume
must be taken from table 5 – 8.
Table 5 – 8 – Adaptation times and test duration depending on the pipe volume
Pipe volume* Adaptation time
< 100 l
≤ 100 l < 200 l
≤ 200 l
*Recommended values
The measuring instrument must have a minimum resolution of 0.1 bar.
This rule of the legal German accident insurance must also be observed for Germany.
"Operation of work equipment", BGR 500, April 2008, chap. 2.31, Work on gas
pipes, industrial liability insurance association rule.
The European standard EN 806-4:2010 prescribes the following for the "Selec-
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tion of disinfectants":
"The system must be filled with the disinfection solution with the initial concentration
and for the contact time defined by the disinfectant manufacturer. If the remaining
concentration at the end of the contact time is below the manufacturer's recommen-
dation, the whole disinfection process may have to be repeated until the remaining
concentration after the corresponding contact time has been reached. After successful
disinfection, the system must be drained immediately and flushed thoroughly with
drinking water. Flushing must be continued according to the instructions/recommen-
dations of the disinfectant or until the disinfectant can no longer be traced or is below
the level permitted by national regulations. Persons carrying out the disinfection
must be adequately qualified."
"After flushing a sample (samples) must be taken and subjected to a bacteriological
examination. If the bacteriological examination of the sample/samples reveals that
insufficient disinfection has been achieved, the installation must be flushed and
disinfected again, then further samples must be taken."
"A full record of the details of the entire procedure and the test results must be
compiled and submitted to the owner of the building."
Technical Rule – Worksheet DVGW W 557 (A) October 2012 of the German
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Association of the Gas and Water Industry e.V. (DVGW).
The following must be observed for Germany: "All chemicals including the additives,
that are used for the disinfection of drinking water installations must meet the
requirements for chemicals for water treatment which are defined in European or
German standards (DIN EN 806-4)." "Every installation disinfection stresses the
materials and components of the drinking water installation so that the drinking water
installation can be damaged."
"If the chemical disinfection is carried out section by section, the line sections to be
treated must be shut off from the rest of the drinking water installation. Opening the
tapping points of the section of the installation to be disinfected one after another
ensures that the disinfectant gets into the whole section." "At the end of the exposure
time, a minimum concentration dependent on the initial disinfectant concentration
and exposure time necessary to assure disinfection must be verifiable at all tapping
points. This must be checked at least at every tapping point of the individual lines
farthest away from the dosing point."
Min. test duration
10 min 10 min
30 min 20 min
60 min 30 min
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