Air Services

Gross Leak Test (GLT)

The purpose of GLT is to test process equipment and piping systems grossly during pre-commissioning stage before Commissioning Leak Test (CLT) phase.

Advantages of GLT:

- All huge leaks are located, repaired and leak-testing report is produced
- Save time and Nitrogen
- Drying assurance before CLT to prevent the hydration

Air Drying & Dehydration

After the hydro test, piping facilities is bulk dewatered to prepare for drying. Dewatering is usually achieved by a high-pressure air stream to purge all water to disposal area or water tanks.

Air Drying should be done using oil free and dried air to at least the dryness level that the client requires for the final dryness levels of pipeline. With DREXEL air compressors and desiccant dryers, an air dryness level can be obtained down to -60°C dew point. The process of air-drying can take days or weeks depending on the temperature and length of the piping loop.