ANALISIS PERFORMA EFISIENSI AC LUBE OIL PUMP TIPE 125LY-35-4A PADA SISTEM PELUMASAN TURBIN UNIT 1 PLTU 1 JAWA TIMUR PACITAN ( PERFORMANCE ANALYSIS OF AC LUBE OIL PUMP EFFICIENCY TYPE 125LY-35-4A ON TURBINE LUBRICATION SYSTEM UNIT 1 PLTU 1 EAST JAVA PACITAN ) - Aditiar, Luthfy (2014)