From this you will get the total volume of bunker. Go to your sounding table go to the page of your particular tank which you are planing to take bunker, find out the volume by considering the trim. There you will get the final ullage or sounding of your tank.
How is bunker fuel measured?
Since bunker fuels are ordered by weight but measured upon delivery by volume, density measurement is the parameter which enables the correct and accurate determination of the quantity of bunker fuel deliveries. … There are various International standard methods available to measure the density of fuels.
What percentage of capacity a tank is filled during bunkering?
11. There is no need to fill up a tank 85 to 90% at one go. Check the tanks which are already filled up and then if you want to top them up more, follow the Inching method (Open the tank valve for 5 minutes (while other tanks are filling) and then close again.
How is WCF and VCF calculated?
– T 54B (VCF) > Density @ 15*C 0.9903 = 0.9870 (see the above picture you need to interpolate if any different numbers on both columns). (Quick formula with reducing factor for WCF is Density @ 15*C – 0.0011 = 0.9903 – 0.0011 = 0.9892).How do you make a bunker plan?
It includes estimated filling grades and respective quantities, designated filling tanks, filling sequences, topping-up, emergency procedures and crew responsibilities. A typical bunkering plan should include the following: Grades to be transferred, their amount and details, such us volumes, loading temperatures etc.
What is the formula to calculate fuel consumption?
- Fill your tank to the top.
- Zero the trip counter.
- When you next fill up, note the mileage driven.
- Fill the tank again and note the number of litres put in.
- Divide the number of miles driven by the amount of fuel used in litres (miles per litre)
How is vessel slip calculation?
Soln: Slip (percent) = Engine distance – ship’s distance/ Engine’s distance X 100. Engine distance = Pitch X RPM X 60 X 24 / 1852.
How do you calculate main engine load?
Work done in one cycle = Mean Indicated Pressure x Area of the Piston x Length of stroke = [Pm] x [A] x [L] To obtain the power of this unit, it is necessary to determine the rate at which work is done, i.e. multiply work by number of power strokes in one second.How is fuel consumption of a ship calculated?
Measuring and Reporting Fuel Oil Consumption The formula (Corrected Density = Density at 150C X [1 – {(fuel temp (0C) – 150C) X 0.00065}]) should be used to obtain the corrected density at the recorded fuel temperature.
How do you do a bunker survey?Conduct a thorough final gauging of all the vessel’s tanks and record the actual quantity of bunkers onboard after completion of bunkering. Establish the Barge delivered quantity and the vessel received quantity. Seal and label the bunker samples. See sampling procedures for more details on bunker sampling.
Article first time published onHow is VCF calculated?
b. As required by the VCF Act, your final award will be calculated using this basic formula: Non-Economic Loss plus Economic Loss, minus Collateral Offsets.
How is trim correction calculated?
3.17 To calculate the First Trim Correction, multiply TRIM by TPC, then multiply the product by the longitudinal Centre of Flotation (LCF) x 100. Then, divide the final product by the Length Between Perpendiculars (LBP). Second Correction = TxT x +/-50 cm x MTC diff.
Why bunker tanks are not inserted?
If the bunker tanks cannot reach 60 degree Celsius, it cannot produce cargo vapours that are rich in hydrocarbons; thus no explosion can occur. And thus, inert gas is not being used in bunker tanks.
What should do before bunkering operation?
- The chief engineer should calculate and check which bunker oil tanks are to be filled after he/she receives confirmation from the shore office about the amount of fuel to be accepted.
- It might be required to empty some tanks and transfer the oil from one tank to other.
How many bunker samples are taken during bunkering?
Also, through local agents, owners should try to obtain information on local regulations/practices related to bunker sampling in that port. During and after bunkering: Number of samples to be taken: It is recommended that at least five samples are taken.
What is illegal bunkering?
Illegal oil bunkering involves the theft of crude oil and its by products through diverse mechanisms which results in serious economic implications. … According to Asuni (2009) oil theft were carried out from different channells which include direct hacking into pipelines and forged bills of lading.
Why bunker fuel is needed by a ship?
By 2020, the global shipping fleet will be required to slash the noxious emissions from thick, sulfur-laden “bunker” fuel, a move that is expected to sharply reduce air pollution and prevent millions of cases of childhood asthma and other respiratory ailments.
What happens during bunkering?
The majority of bunker spills occur as a result of a tank overflowing. The oil is discharged from the tank air vent heads and flows into a containment box or saveall, which then overflows on to the deck.
How is slip percentage calculated?
Slip speed is the speed difference between the Synchronous speed and Rotor speed. Slip speed = Synchronous speed – Rotor speed = Ns -N. Slip, s = (Ns – N) / Ns.
How do you calculate slip frequency?
The synchronous speed of the rotor in RPM N = 120f/P where f is the frequency of the stator current and P is the number of poles. The operating speed No = N – Ns where Ns is the slip speed. The frequency of the rotor current fr = Ns x P/120, so fr = 0 if the slip is zero.
How is engine distance calculated?
The engine distance can be calculated using the pitch of the propeller provided by the manufacturer. Care must be taken in the unit conversion of the pitch from meter to a nautical mile (in general 1 NM = 1800m).
How do you calculate fuel consumption per km?
- Divide the distance by the litres used to get the km/litre.
- Convert the km/litre to L/100 km i.e. divide 100 by km per litre.
- Convert km/litre to miles per gallon i.e. multiply km/litre by 2.825.
How much fuel does a JCB use?
These types of vehicles are productive most of the time, due to which their fuel efficiency is not measured according to the city or highway The fuel efficiency of such vehicles is measured by the hour and the fuel efficiency of the JCB 2DX is 4 liters per hour which is really excellent.
What is bunkering in ship?
In shipping, bunkering refers to the fuelling of ships with marine (bunker) fuels used to power them, and also includes food and drinking water supplies for the crew.
How do you calculate ship speed?
The number of knots passed multiplied by the distance between the knots and divided by 30 seconds told them that 1 knot is equal to 1.852 kilometers per hour or 1 knot is equal to 1 nautical mile per hour. This is how ‘knots’ originated and became a metric system to measure ships speed.
How is BHP of a ship calculated?
Formula for calculations of Break horsepower is BHP = (Torque × RPM )/5252,where torque is lb -ft and n = revolution per min.
How will you know if the main engine is overloaded?
Characteristic signs of an overloaded diesel engine are excessive black smoke at cruising speed, exhaust temperatures beyond those specified by the manufacturer, and most importantly, an inability to reach full rated RPM at wide open throttle on a fully loaded boat with fuel and water tanks at capacity.
How do you evaluate main engine performance?
The main engine will run economically if the engine is well maintained and is run at the rated economic rating where the Specific Fuel Oil Consumption is the least. An engine is said to be performing well or well maintained if it can be safely run at the rated RPM at the rated load.
What is MCR and NCR of engine?
MCR Maximum Continous Revolution of Main Engine. NCR Normal Continous Revolution.
What do bunker surveyors do?
Bunker surveyors are mainly employed to independently check and determine the barge delivered quantity and the vessel received quantity. … Conduct a thorough final gauging of all the barge tanks and record the actual quantity of bunker fuel remaining on the barge.
What is Rob fuel?
The services of inspection / supervision and quantity control of fuel supply (BUNKER) and Remanent on board (ROB), for the maritime industry at global level, are independent and impartial, issuing detailed reports of quantity control and quality for fuel delivered, and the state of the ship in entrance and exit of rent …
