ASTM D4740 - 04(2014)

    Standard Test Method for Cleanliness and Compatibility of Residual Fuels by Spot Test

    Active Standard ASTM D4740 | Developed by Subcommittee: D02.14

    Book of Standards Volume: 05.02

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    Significance and Use

    5.1 The two procedures in this test method are used alone or in combination to identify fuels or blends that could result in excessive centrifuge loading, strainer plugging, tank sludge formation, or similar operating problems.

    5.2 A spot rating of Number 3 or higher on a finished fuel oil by the cleanliness procedure indicates that the fuel contains excessive suspended solids and is likely to cause operating problems.

    5.3 Although a fuel may test clean when subjected to the cleanliness procedure, suspended solids may precipitate when the fuel is mixed with a blend stock. Evidence of such incompatibility is indicated by a spot rating of Number 3 or higher in the compatibility procedure.

    1. Scope

    1.1 This test method covers separate procedures for determining the cleanliness of residual fuel oil and the compatibility of a residual fuel oil with a blend stock. It is applicable to residual fuel oils with viscosities up to 50 cSt (1 cSt = 1 mm2s) at 100°C.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products

    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101702(#4 or #6 Residual heavy fuel oils)

    Referencing This Standard
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    DOI: 10.1520/D4740-04R14

    Citation Format

    ASTM D4740-04(2014), Standard Test Method for Cleanliness and Compatibility of Residual Fuels by Spot Test, ASTM International, West Conshohocken, PA, 2014,

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