1.1本试验方法涵盖了评定燃气轮机燃料在燃料系统内沉积分解产物趋势的程序。 1.2以毫米汞柱为单位的压差值仅根据本试验方法定义。 1.3以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 有关具体警告声明，请参阅6.1.1、7.2、7.2.1、7.3、11.1.1和附录A3。 A1.1.1本方法涵盖了根据试验方法D 3241 JFTOT程序对加热器管进行目视评级的程序。 A1.1.2本试验方法的最终结果是基于本试验方法建立的任意标度加上两个额外的是/否标准的管颜色评级，这两个标准表明存在明显的过量沉积物或异常沉积物，或两者兼而有之。 ====意义和用途====== 测试结果表明燃气轮机运行期间的燃料性能，并可用于评估液体燃料接触规定温度下受热面时形成的沉积物水平。

1.1 This test method covers the procedure for rating the tendencies of gas turbine fuels to deposit decomposition products within the fuel system. 1.2 The differential pressure values in mm Hg are defined only in terms of this test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. For specific warning statements, see 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3. A1.1.1 This method covers a procedure for visually rating the heater tube produced by Test Method D 3241, JFTOT Procedure. A1.1.2 The final result from this test method is a tube color rating based on an arbitrary scale established for this test method plus two additional yes/no criteria that indicate the presence of an apparent large excess of deposit or an unusual deposit, or both. ====== Significance And Use ====== The test results are indicative of fuel performance during gas turbine operation and can be used to assess the level of deposits that form when liquid fuel contacts a heated surface that is at a specified temperature.