Question 1
Consider the Mortgage Service process shown in Figure 7.4 on page 162. Then go to exercise 7.2 on page 174 and assume the Title Search cycle time has change to 50 minutes. Answer a, b, and c.
deter Figure 7.4 shows a simplified pi Because we intend to use this example to illustrate process operation and throughput time, we include the cycle time (CT) of each activity (i age time in minutes to perform the activity) in the diagram. Gantt Chart An activity-based schedule of the mortgage service process provides anothe resentation for understanding and analysis. In Figure 7.5, we follow the prog FIGURE 7.4 Process Flow Diagram of Mortgage Service Accept mortgages Property survey Mortgages CT = 90 min. Completed Approved applications applications Final approval Yes mortgages CT = 15 min. Credit report Title search CT = 45 min. CT = 30 min. No Unapproved mortgages Finish processing7.1. Passengers arriving at an airport departure gate must first wait for their row to he called before proceeding to the gate to have their boarding pass authenticated. If the boarding pass does not match the departing flight, the passenger is directed to the appropriate gate. A passenger attempting to carry on an excessively large bag is directed to check the luggage piece and return. Passengers with the proper boarding pass and appropriate sized carry-on are allowed to enter the jet way and board the plane. Draw a process flow diagram of the departure gate process. How might this process be improved to avoid delays? 2. Consider the Mortgage Service Process shown in Figure 7.3, and assume the Title Search cycle time has changed to 60 minutes. n Somin a. What is the bottleneck operation and corresponding system capacity? b. What is the rush order flow time? c. What is the system capacity, if the same person performs Credit Report and Title Search? 7.3. Revisit the Automobile Driver's License Office example. a. What is the direct labor utilization for the process shown in Figure 7.6a? b. What is the direct labor utilization for the process shown in Figure 7.6b? c. What is the direct labor utilization for the process shown in Figure 7.7? d. What do you conclude from these calculations? 7.4. Revisit the Automobile Driver's License Office, and assume that some of our pre vious recommendations for investment have been implemented. For example, "checking for violations and restrictions" will be done on computer terminal, with
