3rd December 2019
Alliance Technical Building Services Ltd (aka. Alliance) has made excellent progress on the mechanical & electrical (M&E) building services for the new Molecular Imaging Research Centre at Castle Hill Hospital. The centre will provide world class facilities for patient care and diagnosis for cancer, heart disease and dementia.
The HVAC component of the M&E services is based around three Air Handling Units (AHU’s) procured from Barkell Ltd. AHU01 will supply the Cyclotron facility and AHU02 and 03 combine to provide supply and extract for the Radiopharmacy side. These are served by 2 off Daikin 140kW R32 water chillers and the project also has a sperate process-cooling chiller for the Cyclotron and a small VRF system.
Each of the AHU’s were required to be prepared for witnessed factory testing which was carried out on the 26th November at Barkell’s factory, Consett Co. Durham. All three AHU’s where tested in turn for air leakage, volumetric performance, in-duct and breakout noise acoustics. To facilitate this testing each air handling unit had to be assembled with temporary lagged ductwork with transitions, attenuators and dampers. The Alliance team extends its appreciation for the professionalism of Barkell together with Allaway Acoustics and Newford Engineering representatives for their services.
The following week on the 2nd December saw these three Air Handling Units delivered in sections and lifted by crane into the roof level plantroom of the facility and then reassembled over the next few days before an in-situ leakage test. The Crane lift was also a timely opportunity to get the 2 off Daikin chillers and VRF outdoor onto the roof. The Cyclotron chiller meanwhile will follow on the January lift.
Throughout the facility Alliance’s ductwork and air conditioning engineers, pipe fitters and electricians have made significant progress in the available areas. The 630-amp incoming mains has also been pulled in, extending some 260m across site. Installation will continue well into the new year including other aspects of Alliance’s remit such as the BMS, PV, medical gases, fume extract, fire alarm, security, access and IT.