Several maritime industry players have come together to implement Daphne Technology’s SlipPure solution onto the Angelicoussis Group’s LNG carrier Maran Gas Chios. The technology targets methane slip.

Key players in the project are Lloyd’s Register (LR) as the independent auditor, Maran Gas Maritime Inc. as the ship operator, Wärtsilä as the engine provider, Shell International Trading and Shipping Company Limited (Shell) in the role of charterer of the vessel and project co-ordinator, and DNV providing the relevant class approvals for the retrofit.

Also read: Furetank and Wärtsilä can halve methane slip

Methane slip

Daphne Technology‘s SlipPure solution, which was last year awarded approval in principle from LR and DNV, is an after-treatment system that reduces methane emissions of LNG-fuelled engines, so-called methane slip. Methane slip results in increased greenhouse gas (GHG) emissions and ground-level ozone.

Methane slip has been significantly reduced in modern engines thanks to continuous development of combustion technologies, but remains a challenge in LNG-powered vessels using older engine technologies. The SlipPure technology allows for the further abatement of methane in exhaust gas to negligible levels and is complementary to Wärtsilä technologies and developments.

Also read: Another seven companies join initiative to tackle methane slip

Trial and monitoring

This trial, which will see Daphne Technology’s system retrofitted to one of the Wärtsilä 34DF auxiliary engines on board the LNG carrier Maran Gas Chios, will facilitate the technical assessment and system feasibility analysis on SlipPure technology. For the SlipPure solution, HAZID and HAZOP workshops have been completed by LR as part of LR’s Risk-Based Certification process.

Daphne Technology’s PureMetrics solution will also be installed on board and used throughout the trial period, and LR will handle the dissemination of the data as an independent third-party verifier.

PureMetrics directly measures and reports real-time GHG emissions, eliminating the reliance on fuel consumption estimates and ensuring compliance with European Union Monitoring, Reporting and Verification (EU MRV) and International Maritime Organization Data Collection System (IMO DCS) regulations. PureMetrics was awarded approval in principle from LR in June 2023 at Nor-Shipping.

Picture: LNG carrier Maran Gas Chios (by Angelicoussis Group).

Also read: EU funding for Green Ray project to tackle methane slip