Corrosion Prevention Technology News

Nippon Kaiji Kyokai (ClassNK) has joined the major classification societies to amend its rules relating to the inspection of seawater-lubricated propeller shaft systems.The amendment means that ships with open seawater-lubricated propeller shafts that are built to ClassNK rules are subject to the same 15-year shaft withdrawal inspection periods as oil-lubricated shafts and sterntubes, subject to monitoring criteria.The announcement brings ClassNK’s requirements in line with those of other large class societies…

According to the study, "Corrosion Costs and Preventive Strategies," the cost of corrosion in the U.S. is a staggering $276 billion per year. The shipping industry alone accounts for $2.7-billion, broken down into new ship construction — $1.1 billion, maintenance and repairs — $0.8 billion, and corrosion-related downtime — $0.8 billion. This study was initiated by NACE International — The Corrosion Society and mandated by the U.S. Congress in 1999 as part of the Transportation Equity Act for the 21st Century (TEA-21), and conducted by CC Technologies Laboratories, Inc, with support from the U.S. Federal Highway Administration (FHWA) and NACE. This year more than 7,000 of the world's leading corrosion professionals will meet in San Diego, Calif.