The company manufactures a range of specialist heat exchangers. A Key component of all products in the range is the metallic core tubing. Every product range contains these items. The company produces these tubes on a single machine. Due to the criticality of this equipment it is important to increase its effectiveness. The process itself entails two raw material types, depending on product (brass or stainless steel). Reels of raw material are loaded to the rear and fed through the machine. The raw material is then rolled, brazed and cut to the required length, so producing the finished component. Current situation The company has designed a data collection chart and instructed operators to collect data. Currently there is one week's worth of data collected. No corrective action has been taken. All breaks are supposed to be covered (the machine is planned to run continuously) The working day starts at 8am and finishes at 4pm A set-up is defined as a change of material or cutters (or both) Speed is recorded digitally and reported as an average over the shift. The tasks 1 Calculate the daily availability, performance, quality and OEE figures (state any assumptions made). Plus any other calculations that you think maybe useful to the manager (such as a set of calculations for the week overall) 2 Pareto analyse the causes of lost time and make brief recommendations for improvement areas. (Bonus marks may be awarded for working out what the "Shift M/C speed" column really indicates, if anything). \begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|} \hline \multicolumn{16}{|c|}{ TD TUBE MACHINE O.E.E. DATA } \\ \hline Week No. & \begin{tabular}{l} U \\ \\ \end{tabular} & & & & \begin{tabular}{l} DI \\ Z \\ \end{tabular} & & & & & & & & & Comments \& Maintenance & Shift M/C Speed \\ \hline Monday & Brass & \begin{tabular}{l} 1647(786) \\ 1483(1028) \\ 1988(780) \\ 1988(2350) \\ 1483(300) \end{tabular} & \begin{tabular}{c} 25/24/10 \\ 25/5/4 \\ 30/18/9 \end{tabular} & \begin{tabular}{r} 8:40 \\ 9:40 \\ 11:00 \\ 11:50 \\ 3:30 \end{tabular} & \begin{aligned} \( 9: 40 \\ 11: 00 \\ 11: 50 \\ 3: 30 \\ 3: 55\end{aligned} \) & 5 & - & 40 & 51(9) & 25 & 45 & 18 & 26 & Bad cutting finish on tube, knives changed & 18 \\ \hline Tuesday & Brass & \begin{tabular}{c} 1483(708) \\ 1988(3156) \\ 1647(1935) \end{tabular} & \begin{tabular}{l} 5/15/9 \\ 4/6/40 \\ 6/8/21 \\ 16/19 \end{tabular} & \begin{tabular}{l} 8:00 \\ 8:45 \\ 13:05 \end{tabular} & \begin{tabular}{l} 8:45 \\ 13:05 \\ 15:20 \end{tabular} & 5 & - & & \begin{tabular}{l} 66 \\ (11) \end{tabular} & 21 & 40 & 20 & 32 & \begin{tabular}{l} Bad cutting finish \\ Dross out solder \\ Changed flux \\ Set up machine for tin \end{tabular} & 19.5 \\ \hline Wednesday & \begin{tabular}{l} Brass \\ Stainless \\ Steel \end{tabular} & \begin{tabular}{l} 1647(1836) \\ 1988(17) \end{tabular} & \begin{tabular}{c} 35/20/10/ \\ 15/20/6 \\ 15/20/10 \end{tabular} & \begin{tabular}{l} 8:50 \\ 15:10 \end{tabular} & \begin{tabular}{l} 15:10 \\ 15:45 \end{tabular} & - & - & & 60(9) & 29 & 50 & 14 & 19 & \begin{tabular}{l} M/C down \\ Bad finish on tube \\ Removed knives and cleaned \end{tabular} & 7.2 \\ \hline Thursday & Brass & \begin{tabular}{l} 1647(341) \\ 2341(1194) \\ 1483(1082) \\ 1647(2040) \end{tabular} & \begin{tabular}{c} 6/10/6 \\ 10/6/6 \\ 8/29 \end{tabular} & \begin{tabular}{l} 8:00 \\ 8:30 \\ 11:00 \\ 12:20 \end{tabular} & \begin{tabular}{l} 8:30 \\ 11:00 \\ 12:20 \\ 1340 \end{tabular} & 1 & - & & 48(8) & 16 & 30 & 20 & 29 & \begin{tabular}{l} Marks on tube \\ Pick up on tinned brass \end{tabular} & 1715 \\ \hline \multirow{2}{*}{ Friday } & Brass & 1647(2808) & \begin{tabular}{l} 40/15/9 \\ 6/6/25 \end{tabular} & 13:20 & 3:55 & 1 & - & & 70(12) & 19 & 75 & 14 & 39 & Lost time during set up & 1517 \\ \hline & \begin{tabular}{l} Stainless \\ Steel \end{tabular} & 1988(960) & \begin{tabular}{c} 12/6/10/6 \\ 6/15/33 \end{tabular} & & & & & & & & & & & Greased rollers & \\ \hline \end{tabular}