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Pre-Commission Cleaning of Pipework Systems Amended 6th edition (BG29/2021)

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This amended sixth edition (BG 29/2021) takes into account feedback received from users of the sixth edition (BG 29/2020) since it was published in April 2020. Pre-commission cleaning is the process of bringing a closed heating or cooling system to a satisfactory state for commissioning and ongoing maintenance of water quality.

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Pre-commission cleaning is the process of bringing a closed heating or cooling system to a satisfactory state for commissioning and ongoing maintenance of water quality.

This amended sixth edition (BG 29/2021) takes into account feedback received from users of the sixth edition (BG 29/2020) since it was published in April 2020.

Changes from BG 29/2020 to BG 29/2021 include:

  • Minor amendments to the system schematics and associated notes
  • Additional flexibility with respect to laboratory test methods
  • Clarification regarding systems with corrosion monitoring
  • Revised guidance regarding air venting at terminal units
  • Revised guidance regarding circulation
  • Revised guidance regarding heating to improve cleaning effectiveness
  • Revised guidance regarding temporary pumps
  • Expanded guidance to cover a wider range of non-UK guidelines

Editable Excel versions of the proformas in appendices B and C of this guide are attached to the pdf of the guide.

This publication is also available as part of the Commissioning Guide Set (Compak3) and the Pre-Commission Cleaning and Water Treatment Set (PCWT).

Minor corrections were made to BG 29/2021 in August 2021. Click here for further information.

Revision History

First edition: AG 8/91 Pre-Commissioning Cleaning of Water Systems

Second edition: AG 1/2001 Pre-Commission Cleaning of Pipework Systems

Third edition: AG 1/2001.1 Pre-Commission Cleaning of Pipework Systems (published in 2004)

Fourth edition: BG 29/2011 Pre-Commission Cleaning of Pipework Systems

Fifth edition: BG 29/2012 Pre-Commission Cleaning of Pipework Systems

Sixth edition: BG 29/2020 Pre-Commission Cleaning of Pipework Systems

Amended sixth edition: BG 29/2021 Pre-Commission Cleaning of Pipework Systems

Product details

  • Published: February 2021
  • Publisher: BSRIA
  • Authors: Martin Ronceray & Parsloe C
  • ISBN: 978-0-86022-784-7