scope:

This part of IS0 10307 specifies a method for the determination of total sediment in residual fuel oils having a maximum viscosity of 55 mm²/s at 100 °C, and for blends of distillate fuels containing residual components. The maximum total sediment covered by the precision evaluations of this method is 0,50 % (m/m) for residual fuels, and 0,40% (m/m) for distillate fuels containing residual components. Some fuels may exceed the maximum filtration time specified in this method due to factors other than the presence of significant quantities of insoluble organic or inorganic material.

Sediment insoluble in toluene may be determined by ISO 3735.

NOTES

1 The method described in this part of ISO 10307 may be used for the assessment of total sediment after regimes of fuel pre-treatment designed to accelerate the ageing process (see part 2 of this International Standard).

2 Appreciable amounts of sediment in a residual fuel oil can cause fouling of facilities for handling, and give problems in burner mechanisms. Sediment may accumulate in storage tanks, on filter screens or on burner parts, resulting in obstruction to flow of oil from the tank to the burner.