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

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  • Method adopted/last revised:
  • Method reapproved: 2018
  • Status: Current
  • First printed in STM books: 2011

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
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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