Oil and Gas Cable Competence Centre

Gas-pressure cables utilize high-pressure nitrogen to fill the cable pipe. Should nitrogen leak, a pressure drop will be observed; however, with the atmosphere consisting mostly of nitrogen the leak may not be an environmental concern but, the precise location of the leak is hard to find. Fortunately, NKT can help with locating the escaping gas acurately and reliably by filling a very volotile and easily detectable gas mixture into the pipe to allow for precise pinpointing of the fault.

Locating leaks from oil-filled cables can be somewhat more sensitive - not least because dielectric oil escaping into the environment is an environmental hazard. For decades finding oil cable leaks has been deemed time-consuming and costly, primarily relying on traditional freezing methods. At NKT, we understand the need for alternative, more efficient techniques to pinpoint damaged areas in such systems to minimize environmental impact by facilitating a swift repair. We introduce a paradigm shift with three complimentary approaches, minimizing both time and cost associated with oil leak pinpointing.