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Image Credit: Taybro Alloys Stainless Steel Carbon is the most important component in commercial steel alloy. Increasing carbon content increases hardness and strength and improves hardenability. But carbon also increases brittleness and reduces weldability because of its tendency to form martensite. While there are steels that have up to 2% carbon content, they are …
Under regulation 4 of MARPOL Annex VI the exhaust gas cleaning systems (scrubber) are excepted based on the criteria described on the guideline (resolution MEPC 259(68)). Wash water parameters limit was set for PH, PAH, Turbidity and Suspended particle maters and Nitrate. To fulfil the specific requirements of the regulations three types of scrubber are …
Author: Md Taifur Rahman, MEO-2, MPA, 46/E, BMA. Dual fuel engines were introduced in the marine industry through the gas carriers. But now a day’s large size containers are also started to uses duel fuel engines. These engines use both natural gas and bunker fuel to meet the IMO and MARPOL regulations as its having …
BWMS & BWTS To prevent the introduction of harmful aquatic species into new environments by shipping which have been thought to be a major threat to marine ecology and have been devastating in many areas of the IMO adopted the Ballast Water Management Convention in 2004 at a diplomatic conference in London and eventually the …
Ship’s Nitrogen Gas Generator Nitrogen gas generators are used to produce clean and dry nitrogen of higher purity for inerting, purging and cargo padding. Mainly there are two types of nitrogen generators are widely used on board: One type uses hollow fiber membrane technology and Other one is based on the Pressure Swing Absorption (PSA) …
Author: Usman Karneh The function of an electrical system is to safely convey the power from the point of generation (source) to where it is required the various loads or equipment connected to it. The electrical source, like the load may either be a single phase (2-wire) or three phase (3 to 4- wire) system …
Ship Rudder from Mohammud Hanif Dewan M.Phil. http://marinestudy.net/ship-rudder-2/ship-rudder/
Once a vessel has grounded there are a number of considerations that need to be addressed: Has the hull of the vessel been broached during grounding. Sounding all the various tanks that are situated behind the outer hull can check this. If the hull has been broached, then the vessel should not be refloated unless …
In order to monitor the engine performance, we would need to measure the power output and fuel consumption of the engine. This will allow the performance of the engine to be measured against previous and even test bed readings. The staff would be instructed to the followings: Measure the power of the each cylinder by …
One unit may need to be disabled when any of these conditions exist: Damage to a main component of the combustion chamber Damage to a crosshead or bottom end bearing on that cylinder The following sequence would be carried out for our vessels which use the MAN B&W slow speed engine: Stop engine, isolate systems …