Question: Value stream mapping involves first developing a
Value stream mapping involves first developing a baseline map of the current situation of a company’s external and/or internal operations, and then applying lean concepts, developing a future state map that shows improved operations. Exhibit 14.16, for example, shows the current state with a production lead time of 4.5 days. This system is a batch/push system (indicated by striped arrows), resulting in long delays and inventory buildups. Exhibit 14.17 shows the future state map with a production lead time of 0.25 day. This was accomplished by moving to a continuous-flow pull system and attacking the seven wastes. Value stream mapping uses a number of special icons and a display format of boxes and flows. Questions 1. Eliminating the queue of work dramatically quickens the time it takes a part to flow through the system. What are the disadvantages of removing those queues? 2. How do you think the machine operators would react to the change? 3. What would you do to ensure that the operators were kept busy? 
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exhibit 14.16 Map of the Current State Suppliers Production control (ERP) by Customer Daily Daily Machine 1 Machine 2 Assembly 90 90 Production .5 min (1.2 min 22 min lead = 4.5 days 3 days 1 day S day Process time = 3.9 min. Source: Jared Lovlle, "Mapping the Value Stream," ME Solutions 33, no. 2 (Fabruary 2001), p. 32. exhibit 14.17 Map of the Future State Suppliers Production control Customer (ERP) Daily Daily Machine Machine 2 Assembly Combine FIFO machines 1 and 2 into a single machine oell Production 5 min 1.2 min (22min) One-picoe flow One-picce flow lead= 25 day Process time = 3.9 min. 25 day Source: Jarad Lovalla, "Mapping the Value Stream," ME Soutions 33, no. 2 (February 2001, p. 32.
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> Why is lean hard to implement in practice?
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> Discuss ways to use lean to improve one of the following: a pizza restaurant, a hospital, or an auto dealership.
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> Compare the importance and relevance of quality control in JIT, MRP, and synchronous manufacturing.
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> Sailmaster makes high-performance sails for competitive windsurfers. Below is information about the inputs and outputs for one model, the Windy 2000. Calculate the productivity in sales revenue/labor expense. Units sold 1,217 Sale price each $1,70
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> Find examples where companies have used features related to environmental sustainability to win new customers.
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