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Problématique acoustique

Water quality


Présentation des gammes

Water is an essential element for life and is extremely important in an increasingly threatened environment. Preservation of water quality against all types of aggression is a priority for everyone...

 


Water quality


Preservation of water quality in indoors building distribution networks is an absolute priority.  This is even more important because it concerns hospitals and clinics, buildings open to the public and also homes.
 
Health regulations have gradually been extended.  European directive 98/83/CE, November 3 1998, defined protection of the health of the public against the harmful effects of contaminated water supplies as a priority objective.
 
Decree No. 2001-1220, December 20 2001 dealing with water for human consumption imposes new requirements.  In the future, water quality must be respected for water supplied through a distribution network as far as the user's tap.This decree is applicable for cold water and for hot water.
 
Distribution installations must not degrade the quality of water intended for human consumption.  Therefore, a number of parameters have to be controlled from the design stage to maintenance of the network.
 
Several factors contribute to degrading the quality of water in indoors distribution networks:
- Corrosion
- Scaling
- Stagnation of water
- Insufficient circulation speed
- Water temperature
- Contaminated water returns
- Work on the network
- Complementary treatments used
 
The presence of corrosion is a factor that aggravates the development of bacteria.  Furthermore, the deposit related to corrosion reduces the efficiency of treatments due to the protection that it provides for bacteria.
Damage caused by corrosion phenomena due to aging of networks is also responsible for a large amount of damage in buildings, without considering deterioration of water (red sludge, rubble and various particles).  Circuits designed with synthetic materials offer long life, stability and safety guarantees.
 
Another possible cause of a deterioration to the water quality is scaling. A scale deposition can cause obstruction of equipment.  Like lime scale, scaling reduces the effect of preventive treatments, encourages microbial development and reduces heat exchanges. This problem is accentuated by a temperature increase.  Circuits designed with synthetic materials limit bonding of scale.
 
Therefore, a judicious choice of materials for making pipes is of overriding importance.

Furthermore, the pipe must resist different treatments (thermal shocks, chlorine shocks ... compatibility with disinfectants) if necessary.
 
Recommendations have been published recently, and are designed to reduce or even eliminate risks of contamination in indoors distribution networks:
- The CSTB’s Design and Installation Technical Guide
- The GCCP’s guide on the struggle against legionella
- The Technical Guide for water in clinics and hospitals, that can be viewed at www.sante.gouv.fr/htm/dossiers/eau_etabs/guide_eau_etabs.pdf
 

 
 


Faced with these sanitary requirements and obligations, it can be seen that network safety requires good design and strict maintenance of installations so as to perfectly satisfy new sanitary constraints.

 

THE GIRPI SOLUTION:

GIRPI’s HTA is made of CPVC, it will not corrode and resists scaling.  The HTA system has been issued an ACS:  Certification of Sanitary Conformity.

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