Oil checks pdf

Yew Kwang - Oil checks -19/06/14- slide 1 USED OIL ANALYSIS & INTERPRETATION How to sample engine oil • Take sample while engine is hot & well mixed • Take sample before the oil filter • Last resort from drain plug, deposits accumulate in that area • Prevent contamination of oil sample • Use new clean container • Take samples the same way each time • Follow sampling schedule • Label correctly, date, engine no.,Hours of operation, the last time new oil is topped up. • Sent promptly to lab Yew Kwang - Oil checks -19/06/14- slide 2 OIL DRAIN & SAMPLING INTERVALS Equipment Type Drain Interval Sampling Interval Sampling Point Remarks Propulsion Machinery Trunk piston engines Steam Turbines Depending on oil condition Depending on oil condition 6 months 12 months Before centrifuge* or Before filter or at lube purifier discharge Drain period can be extended in case of correct engine operation and maintenance and proper lube oil purification Auxiliares Diesel engines Follow equipment manufacturers instruction 12 months Preferably before filter L/W [2400/(0.85+S)] L=sump cc in litres W=engine load in KW S=%fuel sulfur content Turbines for generator and cargo pumps Follow equipment manufacturers instruction 12 months Preferably before filter *Sample after centrifuge should only be landed and analysed for water in case of gross water contamination, or in case of rapid increase of insolubes to check purifier efficiency. Yew Kwang - Oil checks -19/06/14- slide 3 OIL DRAIN & SAMPLING INTERVALS Equipment Type Drain Interval Sampling Interval Sampling Point Remarks Main reduction gears Follow equipment manufacturer’s instruction 2 years or 8000 hours when system contains more than 4000 litres Preferably before filter Turbo Blowers 1) With integral oil feed 2) With separate sump tank Follow equipment manufacturer’s instructions 1) No sampling 2) 2 years 1) None 2) Preferably before filter 1) Sump cc 1-35 Drain period normally 500- 1000 hours. 2) Sump cc- 2000 litres Air and refrigeration compressors Follow equipment manufacturer’s instructions No sampling None Yew Kwang - Oil checks -19/06/14- slide 4 OIL DRAIN & SAMPLING INTERVALS Equipment Type Drain Interval Sampling Interval Sampling Point Remarks Hydraulic systems 4-8 years or depending on oil condition 2 years when system capacity more than 1500 l. Preferably before filter Heat transfer systems 4-8 years or depending on oil condition 2 years when system capacity more than 1500 l. Preferably before filter Others Follow equipment manufacturer’s instructions No sampling None . Yew Kwang - Oil checks -19/06/14- slide 1 USED OIL ANALYSIS & INTERPRETATION How to sample engine oil • Take sample while engine is hot & well mixed • Take sample before the oil filter • Last. Kwang - Oil checks -19/06/14- slide 4 OIL DRAIN & SAMPLING INTERVALS Equipment Type Drain Interval Sampling Interval Sampling Point Remarks Hydraulic systems 4-8 years or depending on oil condition 2. in case of rapid increase of insolubes to check purifier efficiency. Yew Kwang - Oil checks -19/06/14- slide 3 OIL DRAIN & SAMPLING INTERVALS Equipment Type Drain Interval Sampling Interval Sampling