Pre-Commission Cleaning (closed systems)

The building services sector, places significant dependence Systems that undergo thorough cleaning and proper commissioning have longer lifespans compared to those that are neglected or cleaned improperly. Moreover, they are less vulnerable to bacterial contamination, including Pseudomonas and Sulphate reducing bacteria. As a result, these processes lead to enhanced efficiency and cost savings as the systems can function as intended.

Other Services

• L8 Compliance
• Closed System Water Quality/Maintenance
• Boiler & Cooler Tower Maintenance
• Cooling Tower Decommissioning
• Supply & Maintenance of Water Softeners
• Supply of Dosing Pots, Air Separators and Sample Coolers
• Supply of Automatic Dosing Equipment
• Remote Monitoring of Dosing Plant
• Inhibiting biocide dosing of pressure test water
• Corrosion Rings and Racks
• Sale & Hire Service
• Chemical System Dosing

Microbiological & Chemical Analysis

To ensure efficient and cost-effective operation of systems and prevent future issues with corrosion and microbiological growth, it is necessary to eliminate system contaminants like millscale, jointing compounds, and fabricating debris through chemical analysis and flushing, as per the latest industry standards.

Flushing to BRSIA BG29/2021

BSRIA BG29/2021'Pre-commission Cleaning of Pipework Systems' outlines the methodology for cleaning new industrial and commercial systems (BS7593 2006 for domestic hot water central heating systems). In addition this guidance document outlines the responsibilities of designers and installing contractors. These should be taken seriously since poorly designed systems cannot be adequately cleaned and systems installed without correct flushing facilities require additional installation work prior to flushing and cleaning.

It is important to get systems properly cleaned in accordance with the guideline. In the event that the process fails subsequent cleaning becomes more difficult for the following reasons:

Debris will have become trapped in small valve orifices, FCU coils, chillers etc. These areas are generally protected, by means of bypassing, until after the initial cleaning process. Debris can become baked onto the pipe walls and heat exchange surfaces with the passage of time. Microbiological problems can commence and become a serious problem in the presence of retained debris. We strongly recommend that pre-commission cleaning works are fully recorded and witnessed and that samples are taken to demonstrate cleanliness on completion. In addition we recommend that samples are taken at practical completion on a building site contract to demonstrate compliance with the specification for the new building.

Following pre-commission cleaning it is important that closed systems are carefully monitored and regularly maintained. This maintenance should continue throughout the life of the building and should involve sample taking at a maximum interval of 3 months.