REMS Multi-Push S Instrucciones De Servicio página 21

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immediately before commissioning." "If a system is not put into operation immediately
In section 6.2.3 "Flushing method with a water/air mixture" is described whereby the
surges.
Section 6.3 "Disinfection" points out in 6.3.1 that no disinfection is necessary in many
disinfections must be carried out in accordance with national or local regulations."
Section 6.3.2 "Selection of the disinfectant" states that: "All chemicals that are used
for the disinfection of drinking water installations must meet the requirements for
European standards are not applicable, in national standards." Moreover: "Transport,
storage, handling and use of all these disinfectants can be dangerous, therefore
health and safety requirements must be strictly observed."
of the disinfectant manufacturer must be observed and that a sample must be tested
demanded that: "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."
air, inert gas or water"
Sanitary, Heating and Air Conditioning (ZVSHK)
For Germany Germany
regulations: "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
0.3 MPa (3 bar), the same as for load and leak tests for gas pipes, in agreement
with the responsible industrial liability insurance association and based on these
rules. The national regulat The national regulat
With regard to the test methods A, B and C offered in section 6.1 of EN 806-4:2010
installations with compressed air, inert gas or water" (January 2011) T 82-2011 of
the German Central Association for Sanitary, Heating and Air Conditioning (ZVSHK),
Germany: "For reasons of practicability on the building site, Germany
combinations of materials was chosen. The test time has been extended in relation
Test method B in accordance with DIN EN 806-4 is the basis for conducting the leak
test with water for all materials."
Leak test with inert gases test with inert gases (e.g. nitrogen)
"In buildings with enhanced hygiene requirements such as medical facilities, hospi-
tals, doctors' practices, the use of inert gases may be required to rule out conden-
sation of the moisture in the pipe." (Not possible with REMS Multi-Push).
Leak testing with compressed air Leak testing with compressed air is to be conducted when Leak testing with compressed air Leak testing with compressed air is to be conducted when
a longer standstill time between the leak test and commissioning, especially at
average ambient temperatures > 25°C, is to be expected to rule out possible
bacterial growth,
the pipe system cannot remain completely full from the leak test to commissioning,
e.g. during a frost period,
the corrosion resistance of a material in a partially drained line is endangered
Leak testing with water Leak testing with water can be conducted when Leak testing with water can be conducted when Leak testing with water
changing of the water can be ensured at regular intervals, after seven days at
the latest, from the time of the leak test to commissioning of the drinking water
installation. Additionally when
released for connection and operation,
be avoided.
For Germany Germany Germany the drinking water directive in the version of the 2nd of August 2013 in Germany the drinking water directive in the version of the 2nd of August 2013 in
materials contained in a list of the Federal Ministry of Health may be used for the
Technical Rule – Worksheet DVGW W 557 (A) October 2012 of the DVGW
For Germany Germany, further instructions for the "Cleaning and Disinfection of Drinking Water
Installations" can be taken from the Technical Rule - Worksheet DVGW W 557 (A)
October 2012 of the German Association of the Gas and Water Trade (DVGW).
ination of the nature of the drinking water. It may be necessary to disinfect the
installation additionally after cleaning."
of the German Central Association for
"
"Leak tests of drinking water
Contaminations can enter the pipe system during new installation and repair work;
there may even be a danger of microbial contamination. Section 6.3.2.2 "Flushing
to mobilise deposits. The water requirement is reduced considerably in comparison
Section 7 "Disinfection" describes the thermal and especially the chemical installa-
tion disinfection as a discontinuous measure for the decontamination of a drinking
water installation in detail. "Installation disinfection must only be carried out by
specialist companies." Section 7.4.2 lists 3 "proven disinfection chemicals", hydrogen
peroxide H O , sodium hypochlorite NaOCl and chlorine dioxide ClO
2 2
tive application concentration and exposure time. For example, the application
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.
For Germany Germany
drinking water installations" (new version August 2014) of the Central Association
for Sanitary, Heating, Air Conditioning (ZVSHK), Germany, contains the originally
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
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."
> 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 DVGW
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.
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.
BGR 500, April 2008, chap. 2.31, Working on gas pipes
This rule of the legal German accident insurance must be observed for Germany.
1.1 Scope
1 compressed air hose 8 mm, 1.5 m long, with quick couplings NW 5, for
pressure testing with compressed air (REMS Multi-Push SL/SLW),
testing with water (REMS Multi-Push SLW),
1 connecting hose compressor/water connections, 0.6 m long, with quick coupling
from REMS Multi-Push and suction/pressure hoses at the end of work.
Caps and plugs for connecting the inputs and outputs of the REMS Multi-Push
and the hoses, to avoid contamination during transport and storage.
Operating instructions.
1.2 Article n ers
pressure test with compressed air, without accessories
, their respec-
2
O /l and the exposure time 24
2 2
ushing and pressure testing unit,
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