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This Guide has been superseded by BG 29/2020.
Thorough pre-commission cleaning of pipework systems continues to be important with the adoption of energy efficient controls strategies that may result in low flow rates.
This guide provides the latest thinking and good practice cleaning techniques. It aims to clarify the roles and responsibilities of the parties, improve the exchange of information between them and provide consistency between service offerings of the pre-commission cleaning contractors.
Pre-commission cleaning is achieved through a process of flushing and chemical cleaning (where required) followed by the addition of biocides and inhibitors. Systems designed and cleaned in accordance with BSRIA's guidance are far less likely to experience operating problems.
Contents include:- Design considerations- Inspection and witnessing- Installation considerations- System dynamic flushing- Chemical cleaning procedure- Connections between new and existing systems
Editable Excel versions of the pro-formas in appendices C and D of this publication are attached to the pdf of this guide, and are available as a free download to anyone purchasing a hard copy of the guide.