DNV releases new shore power rules for tankers

Classification society DNV has released new class rules for electrical shore connections designed for tankers. Developing the rules, which are said to be the first of their kind, became necessary as a result of new US regulations – specifically the California Air Resources Board’s Ocean-Going Vessel At-Berth Regulation. This will require tankers to have emission control strategies for use in specific ports from January 2025.

In light of the new regulations, DNV carried out a comprehensive assessment of the feasibility of meeting the requirements on behalf of the Western States Petroleum Association. Following consultations with leading energy charterers, terminal operators, and shipowners, significant gaps in the existing framework relating to shore power for tankers were identified.

These included a lack of standardisation of connection points, limited interface compatibility with terminal systems, and technology development constraints. A further outcome was the requirement for a risk assessment of handling hazardous cargoes during implementation of shore power technology. 

Previously, DNV participated in the Onshore Power Supply Work Group, a joint industry committee set up by the Oil Companies International Marine Forum’s Environment Committee. The group looked at ways in which standard practice guidance could be developed for tankers using shore power, for terminals, and for the interface between them.

DNV Maritime’s Catrine Vestereng, senior vice president and global segment director Tankers, commented: "With tankers that often carry potentially flammable cargoes, the electrical risks can be greater than for dry bulk carriers and container ships. This requires more attention on systems safety, both on board and on the quayside. These gaps underscore the importance of establishing industry-standard guidelines to address safety concerns effectively and ensure the wellbeing of personnel and assets involved in tanker operations." 

DNV’s new rules were finalised after a five-week review period and released at the beginning of July.