The paper analyses contents and concepts of the first Russian «Classification and building rules for sea underwater pipelines» and the «Operating manual for building and operation of the sea underwater pipelines» which have been published by the Register of Shipping of the Russian Federation. These rules give the special attention to acting loads, tensions, ballasting, corrosion prevention, methods of laying and the safety evaluation of sea underwater pipelines.
In the review of crashes and wrecks of large tankers having occurred during last decades the fires and explosions connected with washing of emptied tanks are distinguished as a particular type of accidents. As a rule, they are provoked by charges of static electricity. Inquiry of explosion in tanker «Magas» (in 2000) allows to display and analyze in details circumstances and sources of this type of wrecks.
