Pre-commissioning chemical cleaning removes installation debris, corrosion products, scale and biological fouling from new closed water systems. Delivered in line with BSRIA BG 29/2021, our service ensures LTHW, LPHW, MTHW, HTHW, chilled water and condenser circuits operate efficiently, reliably and are protected from early system failure.
Why Pre-Commissioning Chemical Cleaning is Required
All newly installed closed water systems, including LTHW, LPHW, MTHW, HTHW, chilled water and condenser water circuits should undergo pre-commissioning chemical cleaning prior to handover.
The controlled use of specialist cleaning chemicals enhances the flushing process, removing:
- Soluble contaminants
- Installation debris
- Corrosion residues
- Scale
- Biological fouling
This process is a key requirement under BSRIA BG 29/2021 and plays a critical role in achieving correct system flow rates, heat transfer efficiency and long-term reliability.
Ongoing Monitoring & Maintenance
Following pre-commissioning chemical cleaning, closed systems must be carefully monitored and regularly maintained throughout the life of the building. Implementing a structured monitoring and maintenance regime helps preserve water quality, protect system components and prevent premature deterioration.
Our engineers are not only fully trained in carrying out pre commission chemical cleaning treatments, but also in ensuring the safety of everyone whilst cleaning is carried out. All engineers carry the CSCS passport to safety and are all enhanced DBS checked to ensure confidence when working on site and in areas with vulnerable people.
Our pre commission chemical cleaning treatment to BSRIA BG 29/2021 service includes:
Why Choose Us?
Our collaborative and proactive approach drives efficiency, cost savings and offers our clients peace of mind. We are committed to continuous improvement, through innovation and investment in our personnel, methodologies and equipment.
We offer extremely competitive rates and daytime, evenings or weekends to offer minimal disturbance to our customers.
FAQ’s
What is pre-commissioning chemical cleaning?
It is the process of removing installation debris, corrosion products, scale and biological fouling from newly installed closed water systems before handover.
Which systems require pre-commission chemical cleaning?
All newly installed LTHW, LPHW, MTHW, HTHW, chilled water and condenser water systems.
What standard governs pre-commission chemical cleaning?
Pre-commission chemical cleaning should be carried out in accordance with BSRIA BG 29/2021, with supporting guidance from BS 7593 and BSRIA BG 50.
Why is passivation included in the process?
Passivation protects internal metal surfaces after cleaning, reducing the risk of early corrosion and extending system life.
Is ongoing monitoring required after cleaning?
Yes. Closed water systems must be regularly monitored and maintained throughout the life of the building to maintain performance and compliance.
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