ASTM D6448 Specification for Industrial Burner Fuels from Used Lubricating Oils
7. Test Methods
7.1 The requirements enumerated in this specification shall be determined in accordance with the following test methods, except as noted:
7.1.1 Viscosity - Test Method D445. For quality control, a Brookfield rotary viscometer (Test Method D2983) may be used. In case of dispute Test Method D445 shall be used as the referee method.
7.1.2 Flash Point - Test Method D93, except where other test methods are prescribed by law. For all grades, Test Method D3828 may be used as an alternative test method with the same limits. For Grade RFO4 fuel oils, Test Method D56 may be used as an alternate with the same limits, provided the flash point is below 93°C and the viscosity is below 5.5 mm2/s at 40°C. This test method will give slightly lower values. In case of dispute, Test Method D 93 shall be used as the referee method.
7.1.3 Water and Sediment - Test Method D95 for water and Test Method D473 for sediment. A density of 1.0 kg/L shall be used for Test Method D95. Test Methods D96 for water and sediment, D1796 for water and sediment, and D4377 for water and EPA SW-846 Method 9000 for water and EPA SW-846 Method 9001 for water may be used as alternate test methods with the same limits. For Grade RFO4 fuel oils, Test Method D2709 may be used as an alternate with the same limits, provided the viscosity is in the range from 1.0 to 4.1 mm2/s (1.0 to 4.1 cSt) at 40°C and the density is in the range from 0.870 to 0.900 kg/L at 15°C. In case of dispute, Test Methods D95 and D473 shall be the referee test methods.
7.1.4 Pour Point - Test Method D97.
7.1.5 Density - Practice D1298. Test Method D4052 may be used as an alternate with the same limits. In case of dispute, Practice D1298 shall be the referee method.
7.1.6 Ash - Test Method D482.
7.1.7 Sulfur - Test Method D129. Test Methods D1266, D1552, D2622, D4294, and D5185 and EPA 600/4-79-020 and EPA SW-846 Method 9056 may also be used for all grades with the same limits. For Grade RFO4 fuels having a sulphur content below 0.4 % (mass), Test Method D1266 may be used as an alternate with the same limits. In case of dispute, Test Method D129 shall be the referee method.
7.1.8 Extracted pH - Test Method D4980.
7.1.9 Heating Value (Heat of Combustion) - Test Method D240. Test Method D4868, a calculation method, may be used as an alternate, with the same limits, where precise heat determinations are not critical. In case of dispute, Method D240 shall be the referee method.
8. Keywords
8.1 burner fuels; fuel oils; furnace oils; petroleum and petroleum products; specifications; used oils
