Posted on 20th November 2009
Major international tanker operator National Iranian Tanker Company (NITC) has announced plans for reducing the energy consumption of its fleet by 28% and part of its plans include the installation of Martek Marine’s MariNOx engine emissions monitoring system.
NITC currently has 42 oceangoing crude oil tankers in operation with a further 22 newbuild vessels due for delivery between 2010 and 2013.
Speaking at the ME Ship Tech 2009 conference in Dubai, Mohammad Souri, Chairman and Managing Director of NITC, said that climate change was the greatest challenge facing the world today. He went on to advocate promoting broad participation in voluntary measures and that there was a vast potential for improvements in operational efficiency, fleet management, traffic control, cargo handling and energy efficiency.
The potential target of 28% would be achieved by voluntary speed reduction (10% saving); reducing hull roughness (5%); reducing propeller roughness (3%) and propeller vortex loss recovery (3%); speed optimisation (5%); and main engine fine tuning (2%).
Mr Souri announced that by installing MariNOx on new vessels, NITC would be able to tune the engines further by looking at all aspects of the engine combustion system to deliver greater fuel savings while remaining within the limits of the NOx technical code.
Adjusting the main engine away from the test bed settings would normally invalidate the engine’s NOx compliance. However, because the MariNOx system monitors actual emissions levels it allows the vessels to prove that even after adjusting the engine settings they are still operating within compliance limits set in Marpol Annex VI.
By using MariNOx to allow adjustment of the main engine settings, a number of Martek’s customers have already achieved greater efficiency in their engine operations to make significant fuel savings and in turn reduce CO2 emissions. Independently audited trials have proven that fuel savings of up to 3% have been achieved saving hundreds of thousands of dollars each year in fuel costs and reducing the fleet’s carbon footprint by the equivalent of hundreds of thousands of cars per year.
NITC have a good understanding of the capabilities of the MariNOx system following a successful fuel trial on their vessel MT Iran Daylam where optimising the engine settings resulted in proven fuel savings of 2.1%.
Following the trial, NITC Technical Director, Mr Mayahi, commented: “It is the policy of National Iranian Tanker Company to adopt ‘Best Practice’ across our entire operations and be an innovator in embracing leading new advanced technologies. NITC have chosen to install the MariNOx NOx/C02 emissions monitoring & engine efficiency optimisation system as a statement of this policy.”
Although NITC, like a number of companies before them, have chosen MariNOx as a way of demonstrating environmental best practice, there are also a number of other benefits with which the MariNOx system will provide them.