Clean Room Ventilation
Ensuring the safe and effective running of your clean room ventilation system is vital. The airflow generated by the system is often the only barrier between your critical process and the atmosphere outside. The design and installation of clean room ventilation systems is a specialist discipline requiring industry specific experience to know what works best in practice.
We provide a complete range of maintenance and repair services for your clean room ventilation system, including monitoring and validation for MHRA compliance.
The Role of Clean Room Ventilation
The air within your clean room needs to be free of potential pollutants and relies upon high quality, reliable ventilation in order to maintain operational integrity.
There are many ways in which your clean room ventilation can be compromised. A worn drive system or fan motor fault, can lead to a reduction in airflow performance and quickly the air cleanliness will deteriorate. The regular servicing of the basic components of the system including fan belt and pulley replacements, pre-filter replacements and the cleaning of air intake and cooling coils are vitally important. and
Regular air handling unit inspections are also important. Filter seal or gasket failures often go unnoticed and air bypass can cause significant contamination problems. Routine inspection will locate any potential issues and replacements can be made whenever necessary.
Motorised dampers, regulating the flow of air within your duct work, also require routine inspection and testing as they are susceptible to seizure.
Another common problem is poorly specified or incorrect filters installed within your ventilation system. This can increase the running and servicing costs, as well as posing a potential contamination risk.
Monitoring the Ventilation Performance In Your Clean Room
Routine performance monitoring of cleanrooms is necessary for GMP or quality compliance. Typical performance checks may include filter integrity testing ( DOP testing) (Dispersed Oil, lighting and noise levels checks, testing of Laminar Flow Cabinets, measurement of air change rates and airflow velocity and the monitoring of airborne particulate cleanliness.
Other checks we may carry out include:
Differential pressure testing and room balancing – ensuring that the air in your clean room always moves from clean to less-clean areas, a positive pressure difference between the areas will be established, normally when the correct air supply and extract volumes have been set up.
A difference of 10 or 15 Pascals – the units of measurement used to register pressure differences – are generally accepted as the established rate between clean areas. Clean zones or rooms with the highest air quality requirements should therefore have a higher pressure than adjacent less clean areas.
Room recovery performance testing – this is a quantitative measurement of the effectiveness of airflow. The test measures how quickly a clean room recovers to its normal operating cleanliness following a release of particulate contaminant.
To do this, a burst of test particles is introduced into the area to be tested and, after the particles have mixed with their surroundings, the airborne particle count is measured, and then remeasured at regular intervals. Often the end-point is one-hundredth of the original concentration and the time taken to reach this point can be used as an index of efficiency.
Air pattern recording or airflow visualisation – airflow visualisation is the study of air movement within a clean zone or room to check there is sufficient air movement to either dilute, or to remove, airborne contamination, therefore preventing any build-up of contamination.
Documenting these air patterns is the best way to understand and maintain the critical airflow patterns of a controlled environment.
Clean Room Ventilation Services
Working with clients with clean rooms across a wide range of industries we are specialists in MHRA licensed facilities, as well as those offering sterile and aseptic production, heart valve banks, nuclear medicine and blood labeling, gene and cell therapy, assisted conception and TPN and cytotoxic work.
Understanding completely the vital need for reliable clean room ventilation systems, as well as the importance of regulatory compliance, we are professionally qualified to deal with every aspect of your ventilation system, from the duct work and external air handling units right through to the high efficiency particulate air (HEPA) filters.
Taking the quality of our service seriously, we offer the full range of engineering support services, taking the time to understand the intricacies of your clean room facility, accommodating your needs, and delivering professional, good manufacturing practice (GMP) compliant documentation to ensure your operational effectiveness – all at a competitive rate.
As well as regular servicing and maintenance, we offer a rapid response service for breakdowns and other call outs, reducing your down time as much as we can. We are also experts in clean room decontamination, using revolutionary iHP technology that has been proven effective in reducing microbial contaminants to below detectable levels, so you can rely on us for an end to end service.