Hi this the first time to read about the said system for oil & gas pipe line, I want now what the concept of the this system operation and the supplier of it.
There are many such companies which deal with Leak Detection Systems like: ASI Wavealert (USA), EFA Technologies Inc. (USA), Vista (USA), Krohne (Germany), etc....Most of these work on the principle of propagation of waves and transit time calculations.....check their websites for further insight.
There are different methof for different object and parts of oil and gas pipe line. We can offer you that units from sparkling detecting to ut and aum system. Write to me for details. where aer you from?