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From purifiers fuel is sent to service tank. A fuel oil service tank is a tank which contains only the required quality of fuel ready for use. Usually, as per SOLAS requirement, two fuel oil service tanks, for each type of fuel used onboard, are to be provided. Each tank should have a capacity for at least 8 hours operation, at sea, at maximum continuous rating of the propulsion plant and electrical generating plant. #dgtphotos#chiefengineerlog#marineengineering#sea#ocean#vessel#seaman#engineering#seafarer#marineengines #marineengineer #water #watercraft #bunker#bunkerbarge#coolmariners #marineengineers #marineengineerlife #lifeofamarineengineer #lifeofmarineengineer https://www.instagram.com/p/BxYZPyJA-Q7/?utm_source=ig_tumblr_share&igshid=m826dnfvu6ib

The arrangement and capacity of the treatment plant need to be suitable for ensuring availability of fuel oil for the maximum continuous rating of the propulsion and electrical generating plant. Normally there are two or more treatment equipments which will ensure that failure of one system will not render the other equipment inoperative. #dgtphotos#chiefengineerlog#marineengineering#sea#ocean#vessel#seaman#engineering#seafarer#marineengines #marineengineer #water #watercraft #bunker#bunkerbarge#coolmariners #marineengineers #marineengineerlife #lifeofamarineengineer #lifeofmarineengineer https://www.instagram.com/p/BxYWifJgz0f/?utm_source=ig_tumblr_share&igshid=21mrzf52oar8

After settling, the fuel is transferred into FO service tank via FO purifiers. These machines are using centrifugal force in order to separate fuel from solid residues and water. This can be achieved by lowering viscosity through heating. In the pictures can be seen another example of high carbon residues content in fuel. #dgtphotos #chiefengineerlog #chief_engineer_log #seafarerslife💯⚓️🚢 #seafarerlife #marineengineer #marineengineering #geodantel #vessels#ships#ocean#water#sea#purifiers#fuel#bunker#bunkering#pumps#mechanicalengineering https://www.instagram.com/p/BxLoyamAdNm/?utm_source=ig_tumblr_share&igshid=26zalw5ri5x9

Residual bunker is containing, naturally, high values of H2S (hydrogen sulphide). The level of gas increases with heating and agitation during transfer. Atmosphere monitoring of the bunker tanks should be carried out, after bunkering, for up to 72 hours if the presence of H2S is detected using gas monitoring instruments. The maximum permissible value after 24 hrs period following bunkering is 200 ppm. If the content is higher than this, the tank must be vented under controlled conditions. H2S is an enzyme inhibitor of which effect is to temporarily stop the transport of oxygen between body cells. The gas is heavier than the air, highly explosive,invisible and has a smell of rotten egg . The gas will kill the sense of smell in 15 minutes when the concentration is above 100 ppm. Above 500 ppm unconsciousness will quickly set in with respiratory paralysis. It is lethal in a concentration over 1000 ppm. #dgtphotos#chiefengineerlog#marineengineer#seafarer#chemicalelements#marineengineering#seamanlife#sea#ocean#vesses#ships#seafarer#seafarerlife#bunker#fueloils#seamanlife⚓️ #dgtphotos#chiefengineerlog#marineengineering#sea#ocean#vessel#seaman#engineering#seafarer#marineengines #marineengineer #water #watercraft #bunker#bunkerbarge#coolmariners #marineengineers #marineengineerlife #lifeofamarineengineer #lifeofmarineengineer https://www.instagram.com/p/BwWWlJTAOjf/?utm_source=ig_tumblr_share&igshid=1r3hbbtvjp7ws

The tanks are equipped with temperature sensor with alarm (to monitor tank temperature), vent pipe (to eliminate air during bunkering operation and gases when tanks are heated up), level indicator with high level alarm, an overflow line (to release the fuel excedent în case of an overflow), a quick closing valve (to be activated în case of emergency), heating coils to heat up the fuel în order to be transferred and a suction valve. Fuel oil settling and service tanks are equipped with self closing valve for water and settled residues elimination. #dgtphotos#chiefengineerlog#marineengineering#marineengineer#seaman'slife#ocean#sea #vessel#ships #bunker#seaman#seafarer#humansatsea#bunker #dgtphotos#chiefengineerlog#marineengineering#sea#ocean#vessel#seaman#engineering#seafarer#marineengines #marineengineer #water #watercraft #bunker#bunkerbarge#coolmariners #marineengineers #marineengineerlife #lifeofamarineengineer #lifeofmarineengineer https://www.instagram.com/p/BwVHua3hq2C/?utm_source=ig_tumblr_share&igshid=13y436ijb87dr

Bunker tanks are special vessel compartments designed for fuel storage. They can accomodate different fuel grades and can be double bottom tanks or deep tanks. In normal operations the bunker tanks are never filled more than 90 % but some local port regulations require that this is reduced further. They are designed în such a way that a leak from from tank or its connections does not endanger the ship, persons on board or the environment #dgtphotos#chiefengineerlog#seaman'slife#ocean#sea#vessel#ships#bunker#humansatsea#Marineengineering#marineengineer #dgtphotos#chiefengineerlog#marineengineering#sea#ocean#vessel#seaman#engineering#seafarer#marineengines #marineengineer #water #watercraft #bunker#bunkerbarge#coolmariners #marineengineers #marineengineerlife #lifeofamarineengineer #lifeofmarineengineer https://www.instagram.com/p/BwU9xy2hkNr/?utm_source=ig_tumblr_share&igshid=1w96zjblf7ixn