The trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW's new E cars. The trim line itself involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows: Work Element A B C D E F G H J K L M Time (Minutes) 1.8 0.4 1.6 1.5 0.7 0.5 0.8 1.4 1.4 1.4 0.5 1.0 0.8 Immediate Predecessor(s) None None None A A E B C D F, G H J I, K, L a. Draw a precedence diagram. b. What cycle time (in minutes) results in the desired output rate? c. What is the theoretical minimum number of stations?
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- A production process at Kenneth Day Manufacturing is shown in the figure below. The drilling operation occurs separately from, and simultaneously with, the sawing and sanding, which are independent sequential operations. A product needs to go through only one of the three assembly operations (the operations are in parallel). Q a) is the bottleneck. 6 units/hr Sawing 2.4 units/hr Sanding Drilling 2 units/hr Welding 5 units/hr Assembly 0.7 units/hr Assembly 0.7 units/hr Assembly 0.7 units/hr OUA Jack-in-the-box toy includes two components, the jester (part A) and the box (part B). The following flowchart demonstrates its manufacturing process. Production of Part A A.1 A.2 C.1 C.2 B.1 B.2 В.3 Production of Part B Final assembly It takes two steps, A.1 and A.2, to make part A, performed by two dedicated workstations, respectively: A.1 has a process time of 3 minutes; A.2 has a process time of 8 minutes. It takes three steps, B.1, B.2, and B.3, to make part B, performed by three dedicated operators, respectively: B.1 has a process time of 5 minutes; R2 hac a nrocece timo of 8 minutoeThe trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW’s new E cars. The trim line itself involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows Work Element Time (Sec) Immediate Predecessor(s) A 2.4 None B 0.5 None C 2.1 None D 1.8 C E 1.1 B F 0.9 A G 2 A H 0.7 F I 0.7 D J…
- An assembly line has 10 serial stations with process times of 1, 2, 3, 4,..., 10 respectively. The process time of the system is: a) 550% of its process cycle time. b) 18.18% of its process cycle time. c) 50% of its process cycle time. d) 100% of its process cycle time.A production process at Brianna Bryant Manufacturing is shown in the figure below. The drilling operation occurs separately from, and simultaneously with, the sawing and sanding, which are independent sequential operations. A product needs to go through only one of the three assembly operations (the operations are in parallel). a) is the bottleneck. 1.8 units/hr Sawing minutes per unit (round your response to two decimal places). 5 units/hr Sanding Drilling 5 units/hr b) The bottleneck time is c) The throughput time of the overall system is minutes (round your response to two decimal places). d) If the firm operates 11 hours per day, 20 days per month, the monthly capacity of the manufacturing process is Welding 2.5 units/hr Assembly 0.8 units/hr Assembly 0.8 units/hr Assembly 0.8 units/hr units (enter your response as a whole number). Q(a) T. Smunt Manufacturing Corp. has the process displayed below. The drilling operation occurs separately from and simultaneously with the sawing and sanding operations. The product only needs to go through one of the three assembly operations (the assembly operations are "parallel"). ASSEMBLY SAWING SANDING 78 min/unit 15 min/unit 15 min/unit WELDING ASSEMBLY DRILLING 25 min/unit 78 min/unit 27 min/unit ASSEMBLY 78 min/unit 1. Which operation is the bottleneck? 2. What is the throughput time for the overall system? 3. If the firm operates 8 hours per day, 22 days per month, what is the monthly capacity of the manufacturing process? 4. Suppose that a second drilling machine is added, and it takes the same time as the original frilling machine. What is the new bottleneck time of the system? 5. Suppose that a second drilling machine is added, and it takes the same time as the original drilling machine. What is the new throughput time?
- An assembly line is to be designed to operate 13 hours per day and supply a steady demand of 325 units per day. Here are the tasks and their performance times: TASK PRECEDINGTASKS PERFORMANCE TIME (SECONDS) TASK PRECEDINGTASKS PERFORMANCETIME (SECONDS) a — 48 g d 43 b — 58 h e 38 c — 73 i f 23 d a 63 j g 33 e b 88 k h, i 53 f c 23 l j, k 67 A) What is the efficiency of your line balance? B) Suppose demand increases by 10 percent. How would you react to this? Assume that you can operate only 13 hours per day in regular time. (Round your answers to the nearest whole number.)Amy Xia's p lant was designed to produce 7,000 hammers per day but is limited to making 6,000 hammers per day because of the time needed to change equipment betweenstyles of hammers. What is the utilization?The following table shows the process times in minutes (or minutes/unit - how many minutes to process one unit) of a six-station serial production line (1-2-3-4-5-6). Station 1 2 3 4 5 6 Which station(s) is (are) the bottleneck(s)? Station 2 Station 5 Stations 3 and 4 Stations 2 and 5 Process Time (minutes/unit) 8 11 7 7 11 4
- Dave Grubbs of Grubbs Auto Body has five cars waiting for Economy Detailing. An Economy Detailing consists of a wash and then a hand wax. Cars cannot be waxed until they are washed. ROUND UP (39/5) & (39/10). Wash (hours) Wax (hours) (J)aguar 39/5 5 (C)adillac 5 3 (F)ord 1 39/10 (H)onda 2 1 (L)exus 4 4 What schedule produces the shortest time span in which these orders can be completed? Sequence: ____ , _____ , _____ , ______ , ______ Create a Gantt chart for the optimal sequence (shortest time span). How many hours does it take to complete the five orders? For the schedule in question “a”, how many hours is the waxing task idle? When will Dave finish the Cadillac? What is the average order completion time?XYZ is famous for homemade pizzas which are crisp with thin crust and varied toppings giving the pizzas fabulous tastes. XYZ· is revamping its order processing and pizza-making process. In order to deliver fresh pizza fast, six work elements must be completed as shown in the table below :Element Description Precedence Time (in min)A Receive order - 2·0B Shape dough A 1·0C Prepare toppings A 2·0D Assemble pizza B, C 3·0E Bake pizza D 3·0F Deliver pizza E 3·0Construct a precedence diagram for the process.If the demand is 120 pizzas per night (5:00pm to 1:00am), compute the cycle time for the process. Compute the lead time for the process.What is the theoretical minimum number of workstations needed to achieve the required production?How will you balance the production line to produce and deliver 120 pizzas per night? What is the actual minimum number of workstations needed?A production process at Kenneth Day Manufacturing is shown in the figure below. The drilling operation occurs separately from, and simultaneously with, the sawing and sanding, which are independent sequential operations. A product needs to go through only one of the three assembly operations (the operations are in parallel). 6 units/hr Sawing 2.5 units/hr Sanding Drilling 1.8 units/hr Welding 7 units/hr Assembly 0.7 units/hr Assembly 0.7 units/hr Assembly 0.7 units/hr