Oregon DSC 335 Winter 2013 Ch 7 Constraint Management- SHORT ANS AND PROBLEMS QUESTION 129-137

SHORT ANSWERS129. Explain why a bottleneck limits system output.130. Describe a process from your own personal experience at home or work that suffers from a lack of sufficient throughput. Apply the first four TOC steps to address the situation, assuming you have complete authority to do so.131. Describe three ways that line balancing and line flow layouts are similar to project management and three ways they are different.132. How can Theory of Constraints principles be reconciled with line balancing?PROBLEMS133. Schmidt Industries makes four different snake traps; the Harlan, the Gaylen, the Leah and the Matthew. The Harlan sells for $200 and has $40 in parts and $40 in labor; the Gaylen sells for $150 and requires $30 in parts and $30 in labor; the Leah sells for $100 and has $20 in parts and $20 in labor; and the Matthew sells for $75 but requires only $10 of parts and $10 of labor. Schmidt Industries has four machines (we’ll call them A, B, C, and D for convenience) that are used in the production of each of these products. Each of these machines is available for 40 hours a week and there is no setup time required when shifting from the production of one product to any other. The processing requirements to make one unit of each product are shown in the table.Processing Time on Each Machine in MinutesModelMachine AMachine BMachine CMachine DHarlan1015155Gaylen10101010Leah5101510Matthew55510Schmidt Industries has monthly fixed costs of $5000 and has a demand forecast of 80 Harlans, 60 Gaylens, 40 Leahs and 20 Matthews for the coming month. How many of each of the four models should Susan, the operations manager, schedule for production this month?134. Consider the process shown that is trying to produce to meet a market demand of 500 units per week..gif”>Step 1: Material release scheduleStep 2: Drilling (capacity is 500 units/week)Step 3: Tapping (capacity is 450 units/week)Step 4: Grinding (capacity is 600 units/week)Step 5: Coating (capacity is 400 units/week)Step 6: Inspection (capacity is 1000 units/week)a. Where should buffers be placed?b. Which resource is the drum?c. Where should the rope be placed?d. Which resource is the bottleneck?e. Which resource is the CCR?i)i135. Balance the assembly line for the tasks contained in the table. The desired output is 240 units per day. Available production time per day is 480 minutes. What is the efficiency for the balanced assembly line?Work ElementTime (Sec.)Immediate Predecessor(s)A40—B45—C55AD55BE65BF40C,DG25D,E136. Balance the assembly line using the following task information contained in the table. The desired output is 360 units per day. Available production time per day is 480 minutes. What is the efficiency for the balanced assembly line?Work ElementTime (Sec.)Immediate Predecessor(s)A30—B20AC50AD45BE30BF55C,DG35D,EH40F137. Balance the line in order to achieve maximum output for this ten activity product. Determine the number of units produced in a seven hour work day and the total idle time in hours.TaskTime (sec)PredecessorZ40—Y30ZX80ZW75X, YV15WT55WS35VR40TQ10RM40S, R