BSRIA publishes new edition of BG29
BSRIA has published a new edition of its guide on pre-commission cleaning of pipework systems. BG 29/2020 is the sixth edition of this popular guide, replacing BG 29/2012.
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. System contaminants such as mill scale, jointing compound and building debris will inevitably be found in newly fabricated heating and cooling pipework systems. If allowed to remain in the system in sufficient quality, these contaminants will make the system prone to blockages at strainers, control valves and small-bore heat exchangers. They may also initiate further corrosion and encourage the growth of microorganisms.
Originally published in 1991, BG29 is essential reading for any company operating in the water management area. Providing clear and concise guidance, the publication has become a de facto standard within the industry.
The 6th Edition, developed in partnership with the Closed Systems Control Association (CSCA) and an industry steering group, includes several new topics:
- Cleaning precautions for thin-walled carbon steel pipes,
- Closed-loop pre-treatment cleaning (CPC) procedures,
- Pre-treatment options described in German directive VDI 2035[1],
- Corrosion monitoring solutions,
- Heat networks and low carbon systems.
March 2021 update
In March 2021, BSRIA published an amended version of BG29/2021: Pre-Commission Cleaning of Pipework Systems.This update takes into consideration various feedback received by the users of the previous version which was published in April 2020.
This amended version includes changes such as:
- 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.
The guide is available to download from the BSRIA website, with free downloads for BSRIA and CSCA members.
This article originally appeared on the BSRIA website as BSRIA publishes new edition of BG29: Pre-Commission Cleaning of Pipework Systems on 30 April 2020.
--BSRIA
[edit] Related articles on Designing Buildings Wiki:
- BSRIA.
- BSRIA articles on Designing Buildings Wiki.
- Chilled water.
- Closed Systems Control Association.
- Corrosion in heating and cooling systems.
- Domestic ventilation systems performance.
- Differential pressure control valve.
- Flow characteristics.
- Pressure independent control valves.
- Indoor air quality.
- Valves.
- What makes a good PICV?
Featured articles and news
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.