A method and apparatus for electrically testing a pipe-in-pipe pipeline during the construction, installation, commissioning, operation, or dismantling phases of an electrically heated pipe-in-pipe subsea pipeline. One embodiment is directed to a high voltage qualification test of the electrical integrity...http://www.google.de/patents/US6686745?utm_source=gb-gplus-sharePatent US6686745 - Apparatus and method for electrical testing of electrically heated pipe-in-pipe pipeline
