NYK and MTI Receive Approval for New Maintenance Method
Nippon Yusen Kabushiki Kaisha (NYK)
MTI Co., Ltd.
NYK and MTI have received approval from ClassNK for a new maintenance method (CBM method)*1 implemented on NYK-owned coal carrier Noshiro Maru.
In the shipping industry, time-based maintenance (TBM)*2 is usually practiced, but TBM requires periodic inspections regardless of the condition of the equipment, thus incurring repair costs and impacting the operation schedule.
|Joint research for realizing CBM for main diesel engines||NYK, MTI
Japan Engine Corporation
Outline of Certified CBM
The certified CBM is a method of monitoring the condition of bearings*3 of large marine diesel engines through temperature data, a method that was adopted in the “CBM Guidelines, Second Edition”*4 issued by ClassNK in 2021.
In addition, the Diesel Engine Main Bearing Condition Monitoring System, which visualizes bearing temperature data that can be obtained through sensors installed on the main bearings and ship operation data, has been developed and implemented on the NYK-owned coal carrier Noshiro Maru.
Following its implementation on Noshiro Maru, NYK will consider applying the CBM method to other NYK Group-owned vessels. The NYK Group is also aiming to apply CBM-based maintenance to equipment other than main engine main bearings.
In the future, the NYK Group aims to develop autonomous, next-generation CBMs in which artificial intelligence (AI) constantly monitors the status of engine plants throughout the fleet and determines the timing of maintenance by making use of information such as operating schedules.
By realizing next-generation CBM, we aim to eliminate serious engine accidents, provide efficient and safe operations, and promote ESG management.
On February 3, 2021, the NYK Group released the “NYK Group ESG Story,” which aims to further integrate ESG into the company’s management strategy and promotes activities that contribute to the achievement of the SDGs through business activities. On March 24, 2022, NYK released the updated “NYK Group ESG Story 2022,” which introduces initiatives for integrating ESG into the Group’s management strategies set forth in the “NYK Group ESG Story” and provides a partial explanation of the Group’s sustainable growth strategy from a long-term perspective.
To strongly promote ESG management, the NYK Group will continue to create new value as a sustainable solution provider.
The NYK Group ESG Story
A guideline detailing concrete efforts to integrate ESG into management strategies of the NYK Group.
*1 Condition-based maintenance (CBM):
A maintenance strategy that monitors the actual condition of an asset to determine what and when maintenance needs to be performed, rather than awaiting machinery failure or conducting maintenance on a regular basis
*2 Time-based maintenance (TBM):
A maintenance strategy in which replacement cycles are predetermined for equipment and parts that fail periodically
*3 Parts supporting a rotating shaft
*4 CBM Guidelines (Edition 2.0):
Case studies based on risk evaluations of CBM implementation
Press release on May 25, 2021: “Results of NYK Group Joint Research on CBM Adopted in Second Edition of ClassNK Guidelines”
Press release on November 22, 2019: “The NYK Group Starts Verification of Advanced Condition-based Maintenance for Autonomous Ships”
Link to the press release of NYK
Link to the press release of ClassNK