Answered Essay: Could you please solve the problem with nice hand writting, please please please Thank you

Could you please solve the problem with nice hand writting, please please please Thank you

a) An order for 100 of a product is processed on work centers A and B. The setup time on A is 30 minutes, and run time is ten minutes per piece. The setup time on B is 50 minutes, and the run time is five minutes per piece. Wait time between the two operations is four hours. The move time between A and B is ten minutes. Wait time after operation B is four hours, and the move time into stores is 15 minutes. There is no queue at either workstation. Calculate the total manufacturing lead time for the order.

(b) It is decided to overlap operations A and B by splitting the lot of 100 into two lots of 70 and 30. Wait time between A and B and between B and stores is eliminated. The move times remain the same. Setup on operation B cannot start until the first batch arrives. (a) Calculate the manufacturing lead time. (b) How much time has been saved? Please refer to lecture 3 “Lean-terms.”

Expert Answer

Steps are:

1 Set up A
2 Run A
3 Wait for B
4 Move time from A to B
5 Set up B
6 Run B
7 Wait after B
8 Move into store
Time Unit Total time
1 Set up A 30 30
2 Run A 10 100 1000
3 Wait for B 240 240
4 Move time from A to B 10 10
5 Set up B 50 50
6 Run B 5 100 500
7 Wait after B 240 240
8 Move into store 15 15
Lead time 2085

So lead time =2085 minutes

So 34 hours and 45 mins

B.

On hving the new batch set up:

Batch 1 Batch 2
Time Unit Total time Time Unit Total time
1 Set up A 30 30 1 Set up A 30 30 Absorbed
2 Run A 10 70 700 2 Run A 10 30 300 Absorbed
3 Wait for B 0 0 3 Wait for B 0 0
4 Move time from A to B 10 10 4 Move time from A to B 10 10
5 Set up B 50 50 5 Set up B 50 50
6 Run B 5 70 350 6 Run B 5 70 350
7 Wait after B 0 0 7 Wait after B 0 0
8 Move into store 0 0 8 Move into store 0 0
Total 1140 Total 410
Lead time 1550
25.83333333

So the enw process is

535 mins shorter, hence this much time is saved

So 8 hours and 55 mins save.

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