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MR. IMTIAZ AHMED MOBIL SHC BRAND MANAGER- ASIA PACIFIC, EXXONMOBIL LUBRICANTS PRIVATE LTD Used Oil Analysis for Natural Gas Engines One essential technique to examine engine performance and obtain valuable data on equipment health is through Used Oil Analysis The natural gas industry understands the importance of monitoring equipment to improve plant reliability and reduce costs. One important way to monitor engine performance and get valuable data on equipment health is through Used Oil Analysis (UOA). Why test used oil? Used Oil Analysis identifies changes in the oil and/or engine condition, provides early warning of concerns, assists introubleshooting equipment, and maximizes oil, filter, and engine life. Thus, UOA reduces your operating and maintenance costs.UOA benefits are as follows: • Longer engine life - Equipment life can increase 10% to 100% betweenoverhauls. • Longer component life - Contamination identified by used oil analysis can help avoid crankshaft damage in engines, resulting in fewer repairs or replacement parts. • Increased equipment reliability - Loss of production revenue could range from hours to many days of production. The cost of lost production is many times the cost of the lubricant. Laboratory tests used in oil analysis? Signum Laboratory tests for natural gas engine oils include: • Viscosity - Oils with too high or too low of a viscosity may not lubricate your engine properly. Measured by the time for used oil to flow through a calibrated capillary tube at 40° C and 100° C • Oxidation and Nitration - Prolonged, elevated readings of excessive oxidation and nitration levels result in sludge, varnish, and lacquers that shorten engine life. Measured by IR (Infrared) • Total Base Number (TBN) - A measure of lubricant depletion and degradation of service. Measured by ASTMD2896 or ASTM D 4739 test methods • Total Acid Number (TAN) - The change in TAN is useful in monitoring levels of acidic material in the lubricant. This test is recommended for landfill gas engines. Measured by ASTMD664 or ASTM D974 • Water - Water in used lubricant reduces engine life. Various tests can be used. FTIR (Fourier Transfer Infrared) method iscommonly used in this measurement • Glycol - Glycol in used lubricant reduces engine life and indicates coolant contamination in the oil. Measured by ASTM D2982 • Metals - Typical Wear and Contaminants metals are recorded. Can be measured by ICP (InductivelyCoupled Plasma). POWER SECTOR 58 energética INDIA · NOV | DEC15


energetica-india-54
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