An assembly line has 10 continuous stations with process times of 1, 2, 3, 4, ., 6 respectively. The process time of the system is 28.57% of the cycle time
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- A processor makes two components, A and B, which are then packaged together as thei nal product (each product sold contains one A and one B). The processor can do onlyone component at a time: Either it can make As or it can make Bs. There is a setup timewhen switching from A to B.Current plans are to make 100 units of component A, then 100 units of component B,then 100 units of component A, then 100 units of component B, and so forth, where thesetup and run times for each component are given below.Component Setup/Changeover Time Run Time/UnitA 5 minutes 0.2 minuteB 10 minutes 0.1 minuteAssume the packaging of the two components is totally automated and takes onlytwo seconds per unit of the i nal product. This packaging time is small enough that youcan ignore it. What is the average hourly output, in terms of the number of units of packagedproduct (which includes one component A and one component B)?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.The ABC Company is planning a new product line and a new plant to produce the parts for the line. The product line will include 8 different models. Annual production of each model is expected to be 900 units. Each product will be assembled of 180 components. All processing of parts will be accomplished in the new plant. On average, 6 processing operations are required to produce each component, and each operation takes an average of 1 min (including an allowance for setup time and part handling). All processing opera-tions are performed at workstations, each of which includes a production machine and a human worker. The plant operates one shift. Determine the number of (a) components, (b) processing operations, and (c) workers that will be needed to accomplish the processing operations if each worker works 2,000 hr/yr.
- A new robotic toy which needs to be produced at a rate of 200 units/day. (Assume 8 hours/day) Using the largest candidate rule method, develop a balanced work station to meet the production goal and determine the efficiency of the configuration. Task Time(in minutes) Immediate Predecessors 1 12 --- 2 6 --- 3 2 1 4 5 2,3 5 4 4 6 4 4 7 7 57-383 A plant manager needs a design for an assembly line to assembly a new product that is being introduced. The time requirements and immediate predecessors for the work elements are as follows: Work Element Time (sec) Immediate Predecessor A 12 – B 60 A C 36 – D 24 – E 38 C, D F 72 B, E G 14 – H 72 – I 35 G, H J 60 I K 12 F, J Total = 435 1.If the desired output rate is 30 units per hour, what are the cycle time and theoretical minimum? 2.Suppose that we are fortunate enough to find a solution with just four stations. What is the idle time per unit, efficiency, and the balance delay for this solution?Consider a two-station production line. Station 1 consists of a single machine with an average processing times of 1 hours per job, while Station 2 have two parallel machines which are identical with average processing times of 2 hours per job. What are the rate of the bottleneck and average raw process time for this line? rb = 1 parts/hour; To=2 hours. rb = 1 parts/hour; To=3 hours. rb = 0.5 parts/hour; To=2 hours. rb = 0.5 parts/hour; To=3 hours.
- Rockness Recycling refurbishes rundown business students. The process uses a moving belt, which carries each student through the five steps of the process in sequence. The five steps are as follows: STEP DESCRIPTION TIME REQUIREDPER STUDENT 1 Unpack and place on belt 1.2 minutes 2 Strip off bad habits 1.0 minutes 3 Scrub and clean mind 1.5 minutes 4 Insert modern methods 0.8 minute 5 Polish and pack 1.0 minutes One faculty member is assigned to each of these steps. Faculty members work a 40-hour week and rotate jobs each week. Mr. Rockness has been working on a contract from General Eclectic, which requires delivery of 2,000 refurbished students per week. A representative of the human resources department has just called complaining that the company hasn’t been receiving the agreed-upon number of students. A check of finished goods inventory by Mr. Rockness reveals that there is no stock left. a. Calculate the maximum output for each step. b. Which step…[#2.1] The setup from quiz 1 questions 4 & 5 is repeated below: "Consider software projects flowing through three main activities: requirement planning, development, and testing/implementation. Three different types of resource-types (employees) are needed at each step: analysts for requirement planning; programmers for code development and testers for system testing. There are 2 analysts, 1 developer, and 3 testers. Software projects arrive at the rate of 4 per month (30 days). A project typically takes 10 days for requirement planning, 6 days for code development, and 16 days for testing/implementation. What is the process capacity in projects per month? (show all work). [2.1-2.2] Continuing from the previous question, suppose user-training work is a new activity that must be carried out on each project. It is supposed to take 2 days for each project. Which of the three resource-types should perform this activity and what is the new process capacity? " Based only on the above…upervisor Tom Choi at Tempe EquipmentCompany is concerned that material is not arriving aspromptly as needed at work cells. A new kanban system hasbeen installed, but there seems to be some delay in getting thematerial moved to the work cells so that the job can beginpromptly. Choi is interested in determining how much delaythere is on the part of his highly paid machinists. Ideally, thedelay would be close to zero. He has asked his assistant todetermine the delay factor among his 10 work cells. The assistant collects the data on a random basis over the next 2 weeksand determines that of the 1,200 observations, 105 were madewhile the operators were waiting for materials. Use a 95% confidence level and a {3% acceptable error. What report does hegive to Choi?
- Eddys Pizza is currently redesigning its order-processing and pizza-making procedures for itsoperations which usually start at 5pm and close at 2am. For Eddys to meet customers’ speedydelivery requirement, six elements must be completed as summarised in the table below.WorkElementDescription Precedence Time (Mins)1 Receive customer order - 32 Shape dough 1 23 Prepare toppings 1 34 Assemble Pizza 2, 3 45 Bake pizza 4 46 Select complementary drink - 17 Deliver pizza 5, 6 4i. Draw the precedence diagram for the pizza making process.ii. If the demand for pizza is 90 pieces during the operating time, calculate the desired cycletime iii. Balance the line and calculate its efficiencyAs the Cottrell Bicycle Co. of St. Louis completes plans for its new assembly line, it identifies 25 different tasksin the production process. VP of Operations Jonathan Cottrell now faces the job of balancing the line. He lists precedencesand provides time estimates for each step based on work-sampling techniques. His goal is to produce 1,000 bicycles perstandard 40-hour workweek.Balance this operation using the shortest operation time rule and compute the efficiency of the line.Mr. Aris Benn manages an assembly line that produces a piece of equipment that is used to clean floors. The process to produce this piece of equipment consists of 10 steps. 1. Determine what other information is needed in order to balance this assembly line.