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Chilled water is mostly a closed system that requires strict monitoring and control of certain parameters.
Water during circulation evaporates and it increases the suspended particle concentration, which in result creates scale formation and corrosion etc. Therefore the chemical treatment of any water system is very much necessary on regular basis. Otherwise whole system can be damaged or chocked due to contamination’s.
Before doing the chemical treatment of any water piping system the flushing is must. Flushing removes any solid particles or debris so that cooling water system remains clean.
Below is a brief method statement for doing cleaning, flushing and passivation of closed loop water cooling/chilling system, which is part of HVAC system of a building.
This method statement describes the methodology and procedure for flushing_of chilled water system and to ensure that all persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable Safety and Quality Procedures, and Project Documents and Specification