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NPSH available calcTable 2: NPSHA calculationDensity kg/m 3 input 820Total Delta head friction m input 3.09Height liquid in tankabove pumpm input 2Vapour pressure mbar input 0featureHead vapour pressure m calc 0Atm pressure m calc 12.43NPSH available m calc 11.34modification can be carried out easily.There are two types of suction nozzlein a normal tank design. One type is thedouble ends design with flange at eachend. The other type only comes with anexternal nozzle. Refer to Figures 2a and2b for the proposed modification of thetank nozzle for the above mentioned typeof nozzles. nFigure 1: Isometric piping from tank to productpumpFigures 2a and 2b: Tank nozzle modificationA Predictive Method in Analysing Past Data –A Real Case on Production Line Setup Timeby Ir. Gan Chun ChetThere are many data collected that need tobe analysed to determine whether a predictionis possible. Many methods can be applied topredict one data ahead of the previous data.The purpose of knowing one step ahead is todetermine if the prediction of the next numberis a true number so that people can rely on it.Some judgments are blurred by the fact thatit is only a guess. The accuracy of the nextnumber is not known until it occurs.There are several methods that canbe applied to determine if a prediction isaccurate. Keep in mind that prediction error isanother factor that has to be considered beforea decision is made. Otherwise, a predictionvalue is simply accepted in blind faith. Twosimple methods are listed here which could beused in a real application.• Moving Average• Exponential Smoothing Graph 1: Machine set-up time trendJurutera May 200911