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Chlorination & Dechlorination |
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Disinfection (Chlorination & De-Chlorination) is a requirement for all newly constructed water supply pipelines and mains prior to connection to an existing water network.
The process is carried out following a successful Hydrostatic Pressure test. It ensures and demonstrates that the pipework is hygienic and free from harmful contamination and pathogens such as E Coli, Coliform Bacteria, Enterococci and Clostridium Perfringes.
Final connection to the Irish Water Network will only be allowed following the submission of the following.
The Chlorination Process
Flushing and/or swabbing of the pipework is carried out to ensure all internal surfaces are cleansed and that any debris which may have entered the pipe during the construction process is thoroughly removed.
The pipework is then sterilised through the introduction of a high-level chlorine solution and allowing it to remain in contact with the internal pipework surfaces for a period of 20 to 24 hours.
Chlorine levels are checked at the end of the contact period and if found to meet the minimum requirements the pipework is flushed with potable water.
The highly chlorinated water which is pushed out during the flushing operation is de-chlorinated at the outlet. Flushing is continued until the chlorine concentration at the end of the line is similar to the parent supply.
Water Quality Samples are then collected and transported to an INAB Accredited Laboratory where they are tested for the presence of the bacteriological pathogens and disinfection residuals as set out in the Irish Water Specifications.
A formal Chlorination Report, including the bacteriological analysis is prepared and issued on receipt of the Lab Results. This will need to be issued to Irish Water. If the results are clear, mains commissioning / connection can progress.
Equipment
Eng Tech Services use flow proportional dosing units. These units are specifically designed to ensure precise chlorine residual through the length of the water pipeline.
As the sterilisation process progresses, we continuously monitor chlorine levels using Dual Range Digital Chlorometers for record and quality control purposes.
We provide a professional and reliable Pipeline Chlorination / Disinfection service across Ireland. We cover all areas including Waterford, Cork, Kerry, Limerick, Tipperary, Dublin and everywhere in between.
Irish Water Standard Details and Codes of Practice for Sterilisation can be found at the following link - Irish Water Developer Services
Sterilisation / Chlorination to BS 8558:2015 & PD 855468:2015
Eng Tech Services also carry out Sterilisation of internal water supply pipework, storage tanks and vessels within buildings and their surroundings in accordance with BS 8558:2015 & PD 855468:2015.
The process is carried out following a successful Hydrostatic Pressure test. It ensures and demonstrates that the pipework is hygienic and free from harmful contamination and pathogens such as E Coli, Coliform Bacteria, Enterococci and Clostridium Perfringes.
Final connection to the Irish Water Network will only be allowed following the submission of the following.
- Evidence of satisfactory disinfection of the water main.
- Evidence of satisfactory bacteriological analysis results.
The Chlorination Process
Flushing and/or swabbing of the pipework is carried out to ensure all internal surfaces are cleansed and that any debris which may have entered the pipe during the construction process is thoroughly removed.
The pipework is then sterilised through the introduction of a high-level chlorine solution and allowing it to remain in contact with the internal pipework surfaces for a period of 20 to 24 hours.
Chlorine levels are checked at the end of the contact period and if found to meet the minimum requirements the pipework is flushed with potable water.
The highly chlorinated water which is pushed out during the flushing operation is de-chlorinated at the outlet. Flushing is continued until the chlorine concentration at the end of the line is similar to the parent supply.
Water Quality Samples are then collected and transported to an INAB Accredited Laboratory where they are tested for the presence of the bacteriological pathogens and disinfection residuals as set out in the Irish Water Specifications.
A formal Chlorination Report, including the bacteriological analysis is prepared and issued on receipt of the Lab Results. This will need to be issued to Irish Water. If the results are clear, mains commissioning / connection can progress.
Equipment
Eng Tech Services use flow proportional dosing units. These units are specifically designed to ensure precise chlorine residual through the length of the water pipeline.
As the sterilisation process progresses, we continuously monitor chlorine levels using Dual Range Digital Chlorometers for record and quality control purposes.
We provide a professional and reliable Pipeline Chlorination / Disinfection service across Ireland. We cover all areas including Waterford, Cork, Kerry, Limerick, Tipperary, Dublin and everywhere in between.
Irish Water Standard Details and Codes of Practice for Sterilisation can be found at the following link - Irish Water Developer Services
Sterilisation / Chlorination to BS 8558:2015 & PD 855468:2015
Eng Tech Services also carry out Sterilisation of internal water supply pipework, storage tanks and vessels within buildings and their surroundings in accordance with BS 8558:2015 & PD 855468:2015.
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Eng Tech Services Water Management Ltd. specialise in providing complete Independent Pipeline Pre-Commissioning Services for the Water Industry. Hydrostatic Pressure Testing (Hydrotesting) of Watermains and Pressure Pipelines, Chlorination and Dechlorination, Fire Hydrant Flow & Pressure Testing, Fire Hydrant Inspections, Test Analysis and Detailed Reports. We cover all of Ireland including Cork, Waterford, Dublin, Limerick, Kerry, Carlow, Wexford, Kilkenny, Wicklow and Kildare. We are an Uisce Eireann (Irish Water) registered supplier.
