Project: Refrigeration Leak Detection System
AEG O2 Arena
Safeguarding chillers for restaurants, bars and corporate catering at the O2 Arena
“The leak detection system installed at the O2 arena was perfect for the refrigeration set up for this site. The amount of saved time for us plus the reduced financial cost and inconvenience to our client has been enormous”
– Alan Godfrey – Managing Director of Godfrey and Lappage Services Limited
Refrigeration & Refrigerant leak detection at the O2 Arena
Godfrey Lappage are responsible for maintaining much of the infrastructure, including two very large refrigeration packs, located within the O2 arena. Between the two there are 17 compressors and hundreds of metres of pipework carrying R404A refrigerant around a complex network. Preparations for major events put a huge load on these systems, so the time when they are most needed is also the time when unnoticed leaks are most likely to turn into problems.
With the pressure on and a large, extended system to inspect, it was taking the refrigeration engineers too long to locate and repair refrigerant leaks using the regulated practice. Add the rising cost of R404A refrigerant and changes in F-Gas regulations, they knew it was time to act. Godfrey Lappage recommended that their client invest in a refrigerant leak detection system from their leak detection partners Parasense, which would be sensitive enough to detect leaks early and also give a good indication of where they were occurring. Based on previous experience of product effectiveness, reliability and service support from Parasense Godfrey Lappage knew they would only recommend Parasense products.
Godfrey Lappage and Parasense supplied and installed two GRM2 infrared refrigerant leak detection systems, one for each refrigeration system. Each system is connected to a network of unobtrusive tubes, which draw air from carefully chosen sampling points around the refrigeration system, including compressors, evaporators and control valves. Parasense engineers worked closely with the Godfrey Lappage team to install the leak detection system, ensuring zero disruption to events at the Arena or to the hundreds of on-site catering staff.
Avoiding critical failures & reducing costs
The Parasense system was commissioned in August 2015. Since then it has operated continuously and provided alerts to several refrigerant leaks in different parts of the system, which would have otherwise gone undetected. By giving refrigeration engineers reliable information about the location of leaks, the Parasense solution is saving them valuable time and reducing maintenance costs. Most importantly, management and catering staff can be confident that their critical refrigeration assets will remain 100% available, with any issues being identified and resolved early, rather than remaining hidden and failing due to the extra load on major event days.
“This system like many others we have installed with the great guys at Parasense make finding leaks so much easier and restricts so much equipment downtime. This system has led us to leaks immediately, and helped us to save as much refrigerant as possible”
Dean Thesinger – Godfrey Lappage Engineer
- Refrigeration system – 12 beer cellars and 10 food cold stores, served by two separate systems, including one large centralised pack and four smaller condensing units.
- Refrigerant – R404A with GWP of 3922 kg/CO2e.
- Leak detection – Two separate 16-channel Parasense GRM2 refrigerant leak detectors with infrared absorption technology, connected to approximately 3 km of sample pipe serving 114 detection points across 29 critical assets.
- Alerting – The Parasense system includes local beacons and sounders, as well as notifying refrigeration engineers via email at the first signs of refrigerant leaks.