14.1 C
Hamburg
Tuesday, June 3, 2025
Home News ClassNK releases leak frequency estimates for ammonia-fuelled ships

ClassNK releases leak frequency estimates for ammonia-fuelled ships

ClassNK has published estimated leak frequencies for ammonia fuel from onboard components of ammonia-fuelled ships, providing valuable data for risk assessment.

These estimates are included in ‘Part C of Guidelines for Ships Using Alternative Fuels (Edition 3.0)’ as an appendix.

Ammonia is gaining attention as a potential alternative fuel for ships due to its zero CO2 emissions when burned, and various studies and developments are underway to bring ammonia-fuelled ships into practical use.

A key aspect of designing such ships is conducting a risk assessment, which involves evaluating the likelihood of ammonia leaks from each component. However, due to the limited statistical data on onboard ammonia leaks, estimating these probabilities has been challenging.

To address this, ClassNK collaborated with the Research Institute of Science for Safety and Sustainability (RISS) at the National Institute of Advanced Industrial Science and Technology (AIST) to estimate the probability of ammonia leaks.

They employed a Bayesian method, combining data from Japan’s onshore ammonia leak frequency database, provided by the High-Pressure Gas Safety Institute of Japan, with LNG leak frequency data from LNG-fueled ships.

This approach, which is particularly useful for substances with limited operational data like hydrogen, marks the first-ever estimation of ammonia leak frequencies in onboard components for ammonia-fuelled ships.

Using these estimated leak frequencies will enable more accurate and reliable risk assessments for ammonia-fuelled ships. As part of its ‘ClassNK Transition Support Services,’ which helps clients transition smoothly to zero-emission operations, ClassNK remains committed to promoting the safe use of ammonia and other alternative fuels.





Latest Posts

CMA CGM announces new surcharges and rates in Asia

French ocean carrier CMA CGM has announced new surcharges and Freight All Kinds (FAK) rates for shipments from Asia. First of all, the company will...

APM Terminals Moín launches modernisation initiative

APM Terminals Moín in Costa Rica has announced a modernisation project focused on streamlining access to the terminal. The initiative, which began in April 2025,...

Russian shipping operations show mixed trends in 2025

Russia’s maritime landscape is undergoing a gradual but complex transformation as the country adapts to shifting geopolitical dynamics, trade realignments, and logistical reconfigurations. St. Petersburg,...

APM Terminals’ Spanish facilities join Portchain Connect network

APM Terminals Barcelona and APM Terminals Valencia implement Portchain Connect, aiming to simplify the berth alignment process with shipping lines. The two Spanish terminals have...

Managed IT Services and Business Continuity Planning

Running a business can feel like juggling flaming torches. You’ve got operations to manage, customers to satisfy, and then—bam—a tech issue hits out of...
error: Content is protected !!