SOx and Marine Fuel quality
As discussed in our previous article (NOx & Tier), one of the major global environmental concerns today is the air pollution from maritime transportation. The main elements of pollution are NOx and SOx. Sulfur oxides emission is mainly due to the presence and burning of sulfur compound in the fuel. Causes and Effects of SOx Emission The sulfur oxides emission is due to the presence of sulfur compound in the marine fuels used in marine engines on board vessel. Better the grade, lower will be the sulfur content as it is removed by refining of the fuel. The smoke containing sulfur … Continue reading SOx and Marine Fuel quality
Engines with NOx and Tier I, II, III status
Air pollution from ships is on the rise and global emission standards are getting stringent every year. MARPOL Annex VI limits the main air pollutants contained in ships exhaust gas, including sulphur oxides (SOx) and nitrous oxides (NOx), and prohibits deliberate emissions of ozone depleting substances. What is NOx? NOx is a term for mono-nitrogen oxides NO and NO2 (nitric oxide and nitrogen dioxide). They are produced from the reaction of nitrogen and oxygen gases in the air during engine combustion, in other mean, NOx formed when diesel fuel is burned with excess air-oxygen intake. Nitrogen is a natural element in the … Continue reading Engines with NOx and Tier I, II, III status
MARPOL 73/78 – A General Overview
MARPOL 73/78, since it came into force in 1973 and later revised by the protocol in 1978, ensures that shipping remains the least environmentally damaging modes of transport. It clearly highlights the points to ensure that marine environment is preserved by elimination of pollution by all harmful substance which can be discharged from ship. MARPOL 73/78 This marine environmental convention consists of six implemented Annexes for controlling and eliminating of marine pollution. Annex I: Regulation for prevention of pollution by oil from operational measures as well as from accidental discharges. Key relations: 1. Ballasting or cleaning of cargo oil tanks (Emcy’ ballast, … Continue reading MARPOL 73/78 – A General Overview
What is ASM International?
ASM Metal Handbook ( preface )ASM International is brief understanded as the American Society for Steel Treating (later the American Society for Metals, now ASM International) published a small collection of data sheets–the first edition of what became known as Metals Handbook. The series has … Continue reading What is ASM International?
Ballast Water Management System
Ships need ballast water for many reasons: To achieve the sufficient draft and stability To reduce stress on structure integrity To correct the list or trim Ships carry ballast water to maintain stability in rough seas and when sailing without cargo. After a vessel has been unloaded the water is typically pumped into purpose-built tanks onboard. It is then drained during loading at the destination port, bringing ashore organisms which pose environmental and even health risks. This is suspected to have contributed toward a cholera outbreak in Peru – bệnh dịch tả hoành hành tại Peru that affected over 10,000 people. The International … Continue reading Ballast Water Management System
Pipe Flushing (Full procedure, standards NAS, Filter selection, magnetic filter config.)
There is two type of flushing as below which are enough for pipelines flushing. 1. Chemical flushing (pickling). 2. Oil flushing. CHEMICAL FLUSHING (PICKLING) The purpose of chemical flushing is to remove any dirts, debris, oil, grease, rust, scale, ect form the pipelines. During … Continue reading Pipe Flushing (Full procedure, standards NAS, Filter selection, magnetic filter config.)
Passivation of Stainless steel
It’s well known that the SUS materials (piping) very often demand a final step of surface treatment, i.e. passivation, in order to achieve a product with acceptable visual appearance and high corrosion resistance. The passivation process removes chips and “free iron” contaminations left behind on the surface from different fabrication operations. These contaminants are potential corrosion sites that may result in premature corrosion and ultimately in deterioration of the component if not removed. There many argument and penalty during chemical tanker building with those relating to Painting schedule and Passivation quality. All the jobs are conflicted and much delayed on … Continue reading Passivation of Stainless steel
Protected: PSPC – Performance Standard for Coating of Ballast Tanks – Part 2
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PSPC – Performance Standard for Coating of Ballast Tanks – Part 1
History briefs: In 2002, TSCF published “Guidelines for Ballast Tank Coating Systems and Surface Preparation” provided differing levels of standards for minimum target coating life of 10, 15 and 25 years (denoted as TSCF10, TSCF15, and TSCF25). In order to address the same issue for all vessels, in 2006 IMO adopted Resolution MSC 215(82) “ Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships > 500GT and Double-Side Skin Spaces of Bulk Carriers >150m ” (commonly referred to as PSPC). This resolution came into force in 2008. PSPC is intended for a minimum target coating life of … Continue reading PSPC – Performance Standard for Coating of Ballast Tanks – Part 1
AMARINE 