Marine System

  Diagram Vacuum S i stem (Auto unloading system) 1.General Hampir semua sistem Cargo loading/unloading di kapal tanker menggunakan sistem ini. Sistem ini digunakan untuk meningkatkan efisiensi pengosongan/pegurasan tanki cargo. Pengurasan ini bisa dilakukan sendiri oleh pompa minyak kargo (selanjutnya disebut "pompa") saja. Fitur-fitur sistem ini adalah sebagai berikut: (1) Karena sebagian besar pekerjaan pengurasan secara otomatis, maka operasi pompa menjadi sangat mudah. (2) Karena pekerjaan pengurasan dapat dilakukan oleh pompa berkapasitas besar menggantikan pompa konvensional yang kapasitasnya kecil, waktu bongkar muat dapat dikurangi. 2. Prinsip kerja Prinsip kerjanya adalah secara otomatis mencegah penghisapan gas ke dalam pompa. Dengan demikian, penyelesaian pengurasan oleh pompa cargo sendiri menjadi mungkin. (1) Menghilangkan gas dari pipa hisap pompa Gas yang terhisap dari bell-mouth dan uap minyak kargo yang diproduksi di pipa hisap dipisa

Fuel Oil Separator image   GENERAL The fuel cleaning process is designed to overcome the harmful effects of fuel oil contaminants, primarily water, water soluble salts, and solid particles.   From DNV-GL rule, Fuel oil separators shall comply with the relevant requirements. - Class rule of ships RU SHIP Pt.4 Ch.6 The Fuel oil separators shall be so designed that they will remove an acceptable percentage of the particles (cat fines) in the fuel oil at the certified flow rate. To estimate the ability to remove particles, the separator shall be tested by using a standardised test rig and test medium composed of an unambiguous mixture of synthetic oil and spherical particles. The separator shall be fitted with necessary monitoring, shut-down and safety functions to prevent critical operational conditions. The material used shall be resistant to all applicable fuel oil characteristics. Metallic materials shall be used in parts containing oil. FLOW RATE CAPACITY However,

Marine fuel oil pump can be also called fuel oil service pump, fuel oil supply pump fuel oil booster pump or fuel oil circulation pump. It can be in centrifugal, gear, three screw and other types. The supply pump shall keep sufficient fuel pressure before the engine. The volumetric capacity must be at least 300 % of the maximum fuel consumption of the engines, including margins for: ▪ Tropical conditions ▪ Realistic heating value and ▪ Tolerance To reach this, the supply pump has to be designed according to the following formula: Qp = P1 x brISO1 x f3 Where : Qp (l/h) = Required supply pump capacity with MDO 45 °C P1 (kW) = Engine output power at 100 % MCR brISO1 (g/kWh) = Specific engine fuel consumption (ISO) at 100 % MCR: f3 (l/g) = Factor for pump dimensioning: f3 = 3.75 x 10-3 FO service Diagram c/w MFO supply pump (1&2P-008) In case more than one engine or different engines are connected to the same fuel system, the pump capacity has to be increa

What is the purpose of the settling tank? This is a deep tank in the engine room used for pre-cleaning of fuel oils by gravity; a liquid mixture in the settling tank clears slowly as a heavier liquid and solids sink to the bottom under influence of gravity. In the Fuel oil transfer system, FO settling tank received fuel oil from Fuel oil storage tank via Fuel oil Transfer pump. After this, the stage then we called Fuel oil treatment system. From the settling tanks fuel oil is transferred to the service tanks via FO treatment system. For cleaning of heavy fuel oils ( HFO ) the two stage process is commonly used. The fuel is heated in a settling tank to about 50-60°C and then is drawn out by the purifier inlet pump. F.O Settling tank Requirement Two settling tanks should be installed, in order to obtain thorough pre-cleaning and to allow fuels of different origin to be kept separate. When using RMfuels, recommend two settling tanks for each fuel type (high sulphur HFO,