부산대학교 도서관

In North Sea offshore oil production facilities, simple, routine, microbiological, chemical and corrosion monitoring programmes have been combined with detailed and wide-ranging surveys of the systems. This dual approach is of great value in identifying trends in both contamination and microbially induced corrosion (MIC) in production plant. Such an approach, backed up by laboratory simulations, also allows assessment to be made of the performance of remedial measures, for example biocide treatment. A specific case history is described whereby potential treatment regimes were tested firstly under laboratory conditions to simulate the system and secondly using similar methodologies on-site during the course of the treatment. Laboratory tests using biofouled steel surfaces allowed the selection of the most appropriate treatment, which in most cases is different from that identified using conventional planktonic test methods. This paper describes simple methodologies and approaches found to be applicable in the North Sea context, with case history studies to demonstrate the value of this dual laboratory and field approach to the assessment, monitoring and control of microbially induced corrosion.