5. In an assembly plant, material handling between departments is performed usin

Question

5. In an assembly plant, material handling between departments is performed using a uni-directional closed-loop conveyor. The figure below shows the layout for the modular facility, which consists of three equal-sized assembly modules(A, B, and D, one administrative module (C), and one warehouse module (E). Pick up/Drop off (P/D) points for each module are also shown in the figure. Conveyor flow The distance betwe PID points and the number of pallet loads moved betweern departments are given below Distance between P/Ds Pallet Flow 15 30 PID1 PID 2 50 feet PID 2 PID3 75 feet PID3 PID4 25 feet PID4 PID5 75 feet P/DS PID1 50 feetE 25 0 25 10 0 10 Determine the D-score for the current layout 6. Using the data from Problem 5, but assuming that modules B and D exchange their locations, determine the D-score for the alternative layout.

Explanation / Answer

5. Total flow = Pallet Flow between points (from table)* Sum of the distance between the pallet flow points

= 5(200)+15(25)+30(150)+10(75)+25(175)+5(225)+25(250)+10(175)+10(125)+5(50)+5(150)

= 22,375

Score of D = 25(250)+10(175)+10(125)= 9250

6. Exchanging the modules B and D from their respective positions we get

Total Score by exchanging b and d =  Pallet Flow between points (from table)* Sum of the distance between the pallet flow points.

= 5(25+75+50+50)+15(25)+30(150)+10(75)+25(75+25+75)+5(50)+25(75+50+50+75)+10(75+50+50)+10(70+50)+5(50)+5(50+75+25) =21450

Score of D after exchanging = 10*75+25(75+75+25)+5*50 = 5375

A D C B E A -- 5 0 15 30 D 10 - 25 0 5 C 0 0 -- 0 0 B 25 10 0 - 10 E 0 5 0 5 0

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