Technology

Nagoya HVO Trial Tests the Fuel Supply Chain

Published 31 October 2026 Publisher IMWO Region Asia Pacific Confidence Confirmed
Nagoya DCM8 HVO-blend verification method connects fuel-batch documentation, tank consumption, engine hours and accepted ground-treatment volume. These are proposed linked records.

IMWO original engineering diagram; source: Toyo Construction

Toyo and NX Shoji report HVO-blend bunkering for DCM8 at Nagoya Port. The case puts fuel approval, witnessed blending and delivery records alongside the vessel's ground-improvement performance.

The first supply took place on 1 September

Toyo Construction's 26 October account reports HVO-blend fuel supplied on 1 September to DCM8, a deep-mixing ground-improvement vessel working at Nagoya Port. NX Shoji's same-day release identifies Toyo group company Tomac as the vessel operator and describes the start of fuel verification. [1,2] Toyo says NX obtained the relevant fuel-blending approval and handled the exemption paperwork, with officials witnessing blending and sampling. The blend combines hydrotreated vegetable oil with conventional diesel. The public accounts give the supply event and the companies' approval route; blend proportion, consumption and measured carbon savings remain undisclosed. [1,2]

Fuel delivery and accepted treatment need the same record

For a deep-mixing vessel, compare fuel consumed per accepted volume of treated ground under comparable soil, depth and binder conditions. A lower-carbon fuel can carry a higher delivered price while reducing emissions per unit of energy. Production interruptions, standby and re-treatment can change fuel use per cubic metre enough to affect the comparison. The delivery record should therefore connect the batch and blend specification to tank readings, engine hours and the treatment log. Keeping those records together lets the project separate a fuel change from a change in the ground or the operating cycle.

Evidence conclusion

HVO verification starts with batch traceability

NX's March 2025 account concerned FAME-blend heavy fuel supplied to the different vessel DCM6 in Osaka Bay. [3] That experience provides a preceding marine-fuel campaign, while DCM8's HVO blend needs its own material and engine record. Procurement teams should obtain the batch's feedstock and production-pathway documentation, the applicable lifecycle-emissions factor and the basis of any chain-of-custody claim. Then compare delivered fuel cost and recorded consumption over an agreed treatment period. The two October announcements establish a bunkering and verification programme. A project carbon result will depend on the supplied blend and its documented lifecycle factor, together with the vessel's measured energy use.

Outstanding evidence

  • Batch specification, blend proportion and lifecycle-emissions basis
  • DCM8 tank readings, operating hours and accepted treatment volume
  • Engine verification findings and repeated-supply availability

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