RAF, Dishforth
We received a call from our long-standing client, asking us to assist them with the ongoing ventilation problem at RAF, Dishforth. Our initial survey noted several issues with the current setup and the brief was to repair the system, retaining as much as possible/practical to reduce cost. This site hadn’t been touched in over 20 years; the system had a number of reclaim coils along with filters which hadn’t been cleaned or replaced. Below was the coil we removed and it was shocking to see that the little 450dia cased fan was still operating!
Within our scope, we replaced the existing filter assembly with a new full length assembly, housing stainless steel baffle filtration. This had to be designed to fit the existing canopy, meaning we had to match the sloping sides. Thankfully, we worked together with our client who designed the existing equipment around the existing canopy footprints, meaning we could maintain the required overhangs to the equipment and avoiding the need (and added expense) for a canopy extension. The extraction system also received a complete upgrade; we utilised the majority of the existing ductwork which was in excess of 20m and then we installed a new centrifugal fan to extract to suit the required air volume and system pressures and we must say the site personnel were thrilled with the performance of the upgraded system. To put it into perspective, the original system couldn’t hold a simple tissue, but following our works, it can now hold an entire roll! 😊
The system on site also lacked mechanical air input and we needed to include some form of fresh air input to meet the required regulations. The simplest solution was to duct from the outside wall and distribute this into the space. We manufactured the ductwork from stainless steel meaning we could house all the internal joints/brackets and resulting in a clean finish.
We installed and commissioned the new gas interlock system and recorded all the air volumes, confirming the system meets the requirements. We even left a little cheat sheet on full view, in case the team on site had difficulty operating the fans!
All in all, another successful project and one which has saved the end-user money as well as reducing the impact to the environment by reusing existing products.