Naslov
New-build DWT 49999 t Oil/Chemical Tanker: Mapping and Local Monitoring of the Piping System

Autori
Korljan, Dario ; Roldo, Liane

Izvornik
International Journal of Scientific & Engineering Research (2229-5518) 13 (2022), 8; 51-56

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
corrosion ; pipeline ; product tanker ; stainless steel

Sažetak
This article presents an overview of the product tanker piping, its materials and problems. The goal of the study is to map, monitor in loco and point out some of the steel alloys used in the pipelines of a vessel that carries oil, kerosene, gasoline or paraffin. The aim of the paper, besides steel alloys, is to point out very dangerous problems that people mostly ignore, and those are step-by-step maintenance and an open circuit scrubber over-board pipe. The solution to the maintenance part would be the proper maintenance, and timely and continuous thickness measuring of the overboard pipe. During the voyage on a 49999-tonne DWT product tanker, pipelines are mapped and monitored in the field. This is done through weekly recordings over a 6-month period by regularly observing and photographing the pipeline system under various sailing and weather conditions. Each week, a surveil-lance round is carried out across the deck to look for cracks or areas of corrosion. Since the product tanker was built in 2018 and commissioned in 2019, no structural issues have been identified to date. The major problem observed is the overboard pipe of the exhaust gas cleaning system, which is very frequently corroded by sulfuric acid. Sulphur (from fuel combustion in the main engine) enters the scrubber and comes into contact with the seawater used for cooling. As the cooling water goes overboard in open circuit scrubbers, the sulfuric acid damages the steel part (AISI 316) of the exhaust line. When corrosive, hazardous and explosive products are stored, deck lines, materials and connections must be constantly monitored. The investigation took place on a 2019 product tanker. Measuring the thickness (in mm) of steel piping is used to monitor critical parts and systems, such as the exhaust gas cleaning system, which corrodes due to the formation of sulfuric acid. Real-time diagnostics therefore provides precise information that prevents pipes and components from leaking.

Izvorni jezik
Engleski

Znanstvena područja
Tehnologija prometa i transport, Temeljne tehničke znanosti

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