$4.$ A semi$-$automated assembly machine, assembles and welds automotive components for a single shift of $7\mathrm{.}5$ hours, $5$ days a week; planned throughput $=150$ units$/$hour; actual output $=2875$ units$/$week$.$ The following losses are encountered during assembly:i$.$Incorrect assembly causes the machine to stop and needs re$-$set on average $5$ times$/$hr$.$ where $1$ unit and $2$ minutes are lost. $($This leads to performance loss due to minor stoppage and also quality lossii.Worn out electrodes are to be replaced once per week, it takes $1$ hour when $30$ units are scrapped $=>$ availability and quality losses iii.Burst out cooling hose causes a machine breakdown once in a month and replacement takes $5$ hours $=>$ availability lossiv.Misaligned fixture causes a loss of $220$ units$/$ week $=>$ quality lossv.For different size parts, fixtures to be removed and replaced and electrode position to be adjusted $3$ times$/$week which takes $2\mathrm{.}25$ hours where $24$ units are scrapped each time $=>$ availability and quality lossesvi.Actuating cylinder sometimes sticks for $30$ minutes$/$ady causing production delay which takes double cycle time $=>$ performance lossvii.Application of rust protective spray by operator stopping the machine at the start and end of the day takes $5$ minutes each time $=>$ minor stoppages thereby performance loss viii.Limit switches corrode once in every $6$ weeks stopping the machine and replacement takes $6$ hours $=>$ availability loss.Calculate the OEE.