IP 375: Petroleum products — Total sediment in residual fuel oils — Part 1: Determination by hot filtration

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  • Method adopted/last revised: 2011
  • Method reapproved: None
  • REF/ISBN: IP375-2939444
  • Status: Current
  • First printed in STM books: February 2011

Scope

This part of ISO 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 could 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.

For the determination of sediment insoluble in toluene, see ISO 37351.

NOTE 1 The method can also be used for the assessment of total sediment after regimes of fuel pre-treatment designed to accelerate the ageing process (see ISO 10307-2).

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

NOTE 3 For the purposes of this International Standard, the terms “% (m/m)” and “% (V/V)” are used to represent mass and volume fractions of a material, respectively. These expressions are deprecated under the International System and according to ISO 31-0, Quantities and units — Part 0: General principles, which specifies that mass and volume fractions be expressed as “mass fraction of xx %” (symbol ω) and “volume fraction of xx %” (symbol φ).

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