BS PD 855468:2015 provides guidance on cleaning, flushing anddisinfection of services supplying water for domestic purposes within buildingsand their curtilages, including those for the production of foods, but excludingclosed systems or other industrial processes.NOTE 1 See the Water Quality Regulations [7], [8], [9] and [10] and BSRIAGuide 29-2012 [18] for cleaning closed systems. "Domestic purposes" refers to waterused for drinking, washing, cooking and sanitation.The guidance is intended to help prepare new and existing systems for use andcontrol microbiological growth in water systems for supply, storage anddistribution, to ensure that:
- residues of construction are adequately flushed from water distributionsystems;
- appropriate water quality is achieved;
- appropriate disinfectants and processes are used;
- construction debris and dust are removed;
- risk of corrosion and damage to fixtures, fittings and sensitive plant isminimized;
- adequate records of cleaning are produced;
- stagnation is avoided or managed; and
- appropriate tools and personnel are deployed for the relevant tasks.
- initial commissioning of new or extended systems;
- maintenance of existing systems;
- alteration of existing systems;
- water quality management prior to occupation or as a result of low/nooccupancy or usage; and
- (remedial) response to microbiological problems is identified.
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