Abstract
This paper takes a 2021 Argentine case to show the atmospheric and economic impacts of using LNG fueled dredgers in the second largest worldwide operation of its kind about to start in Rio de la Plata. From the emissions point of view, LNG (Liquified Natural Gas) would reduce 23%, mainly those (NOx, SOx and PM) affecting the coastal population health. The use of BioLNG would reduce 99% (60,000 Tons/yr), including as well the planetary impact of CO2 . The economic impact is estimated in savings of 14% of Dredging Cost: 665 Million Dollars (MMUsd), over the 15 years of operation. The origin of these savings is 48% Operational (reduced fuel cost) and 52% external cost mainly due to the reduced impact in Public Health Budget.
Highlights
In November 2020, the Argentine government launched the bidding process for the new Dredging and Buoying Concession for the inland waterway on the Paraná and Rio de la Plata rivers up to where the latter empties into the Atlantic Ocean. This will make it possible to increase, and afterwards maintain, the width, depth and buoying of the waterways needed to allow some 6,000 ships to circulate with imports and exports from Argentina, Bolivia, Brazil, Paraguay and Uruguay
The following cases are indicated on the chart: 1. The building of the dredger Afonso de Albuquerque, owned by Jan de Nul, concluded in 2019 at the Keppel Singmarine shipyards in Nantong, China, at a cost of US$ 40MM
Given that the specific approaches covered in this study relate to the construction of new, environmentally-friendly Trailing Suction Hopper Dredgers (TSHD), here we analyze some cases that assist in estimating the cost of these new constructions
Summary
This will make it possible to increase, and afterwards maintain, the width, depth and buoying of the waterways needed to allow some 6,000 ships to circulate with imports and exports from Argentina, Bolivia, Brazil, Paraguay and Uruguay. The building of the dredger Afonso de Albuquerque, owned by Jan de Nul, concluded in 2019 at the Keppel Singmarine shipyards in Nantong, China, at a cost of US$ 40MM This value is 6% higher than that of a conventional dredger owing to the installation of a scrubber system to partially reduce exhaust gas emissions. This equipment has arrived for operation in Argentina (indicated in the color green in the chart)
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