Compressors are at the heart of the refining process and their reliability is critical to the operation of the entire refinery. Effective compressor maintenance and high quality repairs are vital to ensure continuous production.
One of our customers discovered that a compressor was leaking gas into the cooling water, and we brought the cylinder into the HTC service repair shop for investigation. Following our standard practice, we carried out a thorough condition analysis and issued a full report before carrying out any repairs.
We removed the valves and the liner then subjected the cylinder’s cooling water space to water and helium leakage testing. Unfortunately, this did not locate the exact position of the leak. However, when the gas side of the cylinder was pressurised to 50 bar, a leakage path between the gas and the cooling water sides was clearly seen.
Normally, it is essential to find the precise site and nature of the leakage before starting repairs, but when it is hard to find the investigation can take several days or even weeks. The HTC engineers realised that there was a faster and more cost-effective way to rectify the problem, and it would require precision engineering of the highest quality.