This document presents the results of laboratory tests of four methods for monitoring and detecting gas leaks, i.e., the sniffers method, the optical gas imaging method, the acoustic method, and the laser method. Based on the conducted analysis, it can be concluded that most of the methods used to detect leaks can be applied with the similar effectiveness in networks transporting natural gas and networks transporting NG-H2. However, it should be noted that changes in the transported medium may influence the lower detection limit of the methods.
The conducted tests also showed that it is not possible to indicate a universal method for detecting leaks in gas sector. The sniffer method and the optical gas imaging are complementary methods for leak detection for NG-H2 mixtures. The most commonly used leak detection method (the sniffer method) does not require any changes to the procedure or equipment used. The acoustic method appears to be the least suitable for leak detection for NG-H2 mixtures.
