That means you have loaded excessive volume to the intended ullage. If the heating applied, then temperature increased to 30*c and density at 0.910 the factor in astm table 54b is 0.9886, and your volume m3 will be increased toġ1,207.25 m3 : 0.9886 = 11,336.49 m3. If use astm table 54b, when density 0.910 20*c the factor is 0.9962. The 11,250 m3 is the maximum volume in m3 that required for your tank.Ĭheck the astm table for your cargo density and heating temperature. If your tank capacity is 50m x 25m x 10m = 12,500 m3, you should find the the quantity in m3 at 1m ullage.Īs per above tank, you 1m ullage is 50m x 25m x 9m = 11,250 m3. The oil nature is the more temperture hit, the more volume reach. Just drop your comments around this topic. Note : If you do calculation with Volume in Barrel, just uses ASTM Table 6B for VCF, ASTM Table 11 for WCF in Long Ton and then ASTM Table 13 for WCF in Metric Ton.įor the above calculation, you could download the software BunkerCal by follow this link Sample calculation tanks sounding attached below (the Temp below should be 34 C).

– 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).ĪSTM Table 54B – T 56 (WCF) : Density 0.9903 = 0.9892 – The Quantity in Metric Ton = Oil Vol x VCF x WCF, Tank Volume at Sounding 3.20 M = 157.20 Cubic Meter, Temperature = 34*C,and density 15*C = 0.9903 (given density). 1 Center, Corrected Sounding = 3.27 Meter, Now we could go with sample of 1 tank to test the calculation.įO Tank No. – Oil Density Table ASTM 54B (VCF) and Table ASTM 56 (WCF).

The Corrected Sounding means below is the sounding after correcting with vessel’s trim and list. – Tank Sounding data and Tank Capacity Table. The bunker calculation is simple and needs the following:

Bunker survey calculation software