SUPPLEMENT 7 CAPACITY PLANNING 353 ..

SOLVED PROBLEM S7.5 T. SmunL Manuracturing Corp. has th e process displayed be low. The drilling operation occu rs separa te ly fr om an d simultaneously with the s(J w ing and :o;a nding operations. The

prod ucl only needs to go throu gh o ne o f t he three assembly openHion~ (the assem bly operations are " parallel").

a) Which opera tio n is the bOl.tleneck?

b) What. j~ Ihe throughpu t time fo r the overall sys tem?

Sawing 1-1 Sanding

c) Jf the firm operates 8 ho urs pe r day, 22 d :'IY:> per monlh , whitl is the m o nthly capac it y orlhe manuracturing process?

d) Suppose th ,lt a second drilljng Inuch ine is ler. connicti ng schedules a ll owed o nl y 1,450 new students to take business co urses. What are the ut iliza tion and efficie ncy of thi s system?

• 57.2 A m y X ia 's plant was designed to produce 7,000 i1all1mers pe r d a y but is limited to making 6.000 ha mmers per Ja y beca use o f the time needed 10 c ha nge equ ipme nl be tween styles o f ha mmers. Wha t is the u ti lization?

• 57.3 If

354 PART 2 DES IGNING OPERATION S

respective ly Wh"ll is I he min imum number of service b

a) Which opera tio n is the bottleneck? b) Wh,H is the bo ttleneck time'! c) What is the throLlghpullime or the ove ra ll system'? d) If the Ii rlll opera tcs 8 hOlll's pe r da y. 20 Jays per month . wh

356 PART 2 DESIG NING OPE RATI O NS

price 0($6.25 wit h l:llvage val ue o f $45,000'l The anu ua l p rofit fro m the inves tment i:s $ 15,000 eaeh yea r fo r 5 ye