查看标准

适用范围：<p id="s00002">1.1 This specification covers seven grades of diesel fuel oils suitable for various types of diesel engines. These grades are described as follows:</p> <p id="s00003">1.1.1 <span class="italic"><span class="italic">Grade No. 1-D S15</span>8212;</span>A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 15 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S15 fuel. </p> <p id="s00004">1.1.2 <span class="italic"><span class="italic">Grade No. 1-D S500</span>8212;</span>A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 500 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S500 fuel. </p> <p id="s00005">1.1.3 <span class="italic"><span class="italic">Grade No. 1-D S5000</span>8212;</span>A special-purpose, light middle distillate fuel for use in diesel engine applications requiring a fuel with 5000 ppm sulfur (maximum) and higher volatility than that provided by Grade No. 2-D S5000 fuels.</p> <p id="s00006">1.1.4 <span class="italic"><span class="italic">Grade No. 2-D S15</span>8212;</span>A general purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 15 ppm sulfur (maximum). It is especially suitable for use in applications with conditions of varying speed and load. </p> <p id="s00007">1.1.5 <span class="italic"><span class="italic">Grade No. 2-D S500</span>8212;</span>A general-purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 500 ppm sulfur (maximum). It is especially suitable for use in applications with conditions of varying speed and load. </p> <p id="s00036">1.1.6 <span class="italic"><span class="italic">Grade No. 2-D S5000</span>8212;</span>A general-purpose, middle distillate fuel for use in diesel engine applications requiring a fuel with 5000 ppm sulfur (maximum), especially in conditions of varying speed and load.</p> <p id="s00037">1.1.7 <span class="italic"><span class="italic">Grade No. 4-D</span>8212;</span>A heavy distillate fuel, or a blend of distillate and residual oil, for use in low- and medium-speed diesel engines in applications involving predominantly constant speed and load.</p> <p class="desc" id="N00001"> <span class="smallcap">Note</span> 18212;A more detailed description of the grades of diesel fuel oils is given in X1.2.</p> <p class="desc" id="N00004"> <span class="smallcap">Note</span> 28212;The Sxxx designation has been adopted to distinguish grades by sulfur rather than using words such as <span class=''unicode''>x201C;</span>Low Sulfur<span class=''unicode''>x201D;</span> as previously because the number of sulfur grades is growing and the word descriptions were thought to be not precise. S5000 grades correspond to the so-called <span class=''unicode''>x201C;</span>regular<span class=''unicode''>x201D;</span> sulfur grades, the previous No. 1-D and No. 2-D. S500 grades correspond to the previous <span class=''unicode''>x201C;</span>Low Sulfur<span class=''unicode''>x201D;</span> grades. S15 grades were not in the previous grade system and are commonly referred to as <span class=''unicode''>x201C;</span>Ultra-Low Sulfur<span class=''unicode''>x201D;</span> grades or ULSD.</p> <p id="s00008">1.2 This specification, unless otherwise provided by agreement between the purchaser and the supplier, prescribes the required properties of diesel fuels at the time and place of delivery.</p> <p id="s00009">1.2.1 Nothing in this specification shall preclude observance of federal, state, or local regulations which can be more restrictive. <p class="desc" id="N00002"> <span class="smallcap">Note</span> 38212;The generation and dissipation of static electricity can create problems in the handling of distillate diesel fuel oils. For more information on the subject, see Gui......