Question

DataSpan, Inc., automated its plant at the start of the current year and installed a flexible manufacturing system. The company is also evaluating its suppliers and moving toward Lean Production. Many adjustment problems have been encountered, including problems relating to performance measurement. After much study, the company has decided to use the performance measures below, and it has gathered data relating to these measures for the first four months of operations.

	Month
	1	2	3	4
Throughput time (days)	?	?	?	?
Delivery cycle time (days)	?	?	?	?
Manufacturing cycle efficiency (MCE)	?	?	?	?
Percentage of on-time deliveries	77%	78%	83%	90%
Total sales (units)	10,530	10,550	10,540	10,550

Management has asked for your help in computing throughput time, delivery cycle time, and MCE. The following average times have been logged over the last four months:

	Average per Month (in days)
	1		2		3		4
Move time per unit	0.5		0.6		0.7		0.5
Process time per unit	0.3		0.5		0.5		0.7
Wait time per order before start    of production	9.6		8.0		5.0		4.0
Queue time per unit	4.1		3.7		2.7		1.7
Inspection time per unit	0.6		0.3		0.6		0.4

Required:
1-a.	Compute the throughput time for each month. (Round your answers to 1 decimal place.)

      

1-b.	Compute the manufacturing cycle efficiency (MCE) for each month. (Round your answers to 1 decimal place (i.e., 0.123 should be entered as 12.3).)

          

1-c.	Compute the delivery cycle time for each month. (Round your answers to 1 decimal place.)

      

3-a.

Refer to the move time, process time, and so forth, given for month 4. Assume that in month 5 the move time, process time, and so forth, are the same as in month 4, except that through the use of Lean Production the company is able to completely eliminate the queue time during production. Compute the new throughput time and MCE. (Round your Throughput Time to 1 decimal place. Round your MCE percentage answer to 1 decimal place (i.e., 0.123 should be entered as 12.3).)

      

3-b.

Refer to the move time, process time, and so forth, given for month 4. Assume in month 6 that the move time, process time, and so forth, are again the same as in month 4, except that the company is able to completely eliminate both the queue time during production and the inspection time. Compute the new throughput time and MCE. (Round your Throughput Time to 1 decimal place. Round your MCE percentage answer to 1 decimal place (i.e., 0.123 should be entered as 12.3).)

      

Answer 1

(1a)Compute the throughput time for each month :-

Move Time + Process Time + Queue Time + Inspection Time

Month	Calculations	Throughput Time
Month 1	(0.5+0.3+4.1+0.6)	5.5
Month 2	(0.6+0.5+3.7+0.3)	5.1
Month 3	(0.7+0.5+2.7+0.6)	4.5
Month 4	(0.5+0.7+1.7+0.4)	3.3

(1b) Compute the manufacturing cycle efficiency (MCE) for each month :-

Process Time/Throughput Tme * 100

Month	Calculations	MCE
Month 1	0.3/5.5 * 100	5.5%
Month 2	0.5/5.1 * 100	9.8%
Month 3	0.5/4.5 * 100	11.1%
Month 4	0.7/3.3 * 100	21.2%

(1c) Compute the delivery cycle time for each month :-

Wait Time + Throughput Time

Month	Calculations	Delivery Cycle Time
Month 1	(9.6 + 5.5)	15.1
Month 2	(8 + 5.1)	13.1
Month 3	(5 + 4.5)	9.5
Month 4	(4 + 3.3)	7.3

(3a) Refer to the move time, process time, and so forth, given for month 4. Assume that in month 5 the move time, process time, and so forth, are the same as in month 4, except that through the use of Lean Production the company is able to completely eliminate the queue time during production. Compute the new throughput time and MCE :-

Month	Calculations	Throughput Time
Month 1	(0.5+0.3+0.6)	1.4
Month 2	(0.6+0.5+0.3)	1.4
Month 3	(0.7+0.5+0.6)	1.8
Month 4	(0.5+0.7+0.4)	1.6

Month	Calculations	MCE
Month 1	0.3/1.4 * 100	21.4%
Month 2	0.5/1.4 * 100	35.7%
Month 3	0.5/1.8 * 100	27.8%
Month 4	0.7/1.6 * 100	43.8%

(3b)Refer to the move time, process time, and so forth, given for month 4. Assume in month 6 that the move time, process time, and so forth, are again the same as in month 4, except that the company is able to completely eliminate both the queue time during production and the inspection time. Compute the new throughput time and MCE :-

Month	Calculations	Throughput Time
Month 1	(0.5+0.3)	0.8
Month 2	(0.6+0.5)	1.1
Month 3	(0.7+0.5)	1.2
Month 4	(0.5+0.7)	1.2

Month	Calculations	MCE
Month 1	0.3/0.8 * 100	37.5%
Month 2	0.5/1.1 * 100	45.5%
Month 3	0.5/1.2 * 100	41.7%
Month 4	0.7/1.2 * 100	58.3%