Powell Technical Management provides pre-commission cleaning, chemical treatment, water analysis and water-hygiene support for building-services systems throughout the UK.
Correct water-system preparation is fundamental to performance.
New heating and chilled-water systems can contain installation debris, jointing materials, oils, corrosion products and other contaminants.
If these remain within the system, they can restrict strainers, valves and heat exchangers, contribute to corrosion and microbiological activity, and create problems during commissioning and subsequent operation.
Our water-treatment service takes a coordinated approach to system cleanliness, water quality and commissioning readiness.
Effective cleaning starts with the system design.
The ability to clean a system properly depends on suitable provisions being incorporated during design and installation. Our specialists can review system arrangements and advise on:
- Flushing strategy
- Temporary flushing requirements
- System segmentation
- Drain and fill points
- Air removal
- Bypasses
- Flow velocities
- Chemical treatment
- Sampling points
- Commissioning readiness
Pre-commission inspections
We can undertake site inspections as installation progresses to help establish whether systems are being constructed in a manner conducive to effective cleaning. Identifying issues before systems are filled can prevent unnecessary delays later in the programme.
Pre-commission cleaning
Depending on the system and project specification, the cleaning methodology may include stages such as:
- Static flushing
- Dynamic flushing
- Degreasing
- Biocide treatment
- Oxide removal
- Further dynamic flushing
- Neutralisation
- Passivation
- Chemical dosing
The precise process is developed to suit the installation, system condition, project specification and applicable industry guidance.
Temporary flushing equipment
Powell Technical Management has access to temporary pumping equipment capable of supporting the flushing velocities required across a range of system applications. Our integrated approach means flushing activities can be coordinated alongside the wider commissioning programme rather than treated as an isolated operation.
Water treatment services
- Pre-commission cleaning
- System flushing
- Inhibitors and biocides
- Chemical dosing
- Effluent treatment
- Chlorination
- Tank cleaning
- Chemical analysis
- Microbiological analysis
- Legionella risk assessment
- Water-quality monitoring
- Water-treatment management
Cleaning is only the beginning.
Once the required system condition has been established, appropriate treatment and monitoring help maintain water quality and protect the installation. We can support water sampling, chemical treatment and ongoing monitoring according to project and operational requirements.
Water treatment and commissioning should work together.
System cleanliness, venting and water quality directly affect the ability to commission heating and chilled-water systems. By providing both water treatment and commissioning expertise, Powell Technical Management can coordinate the two disciplines and help minimise avoidable programme delays.
Chartered Institution of Building Services Engineers
Building Services Research & Information Association
Commissioning Specialists Association