B. Process Analysis - Batching / Process Interruptions (Setups). Consider a process that consists of three steps 1, 2 and 3. Step I is a manual operation staffed by a single worker. Steps 1 and 2 are each equipped by a single machine. Step 3 is performed by a single worker. Each of the process steps works on one unit of work at a time, but must complete a set up" between production batches. The required processing times and set-up times at each of the steps are listed below. There is unlimited space for buffer inventory between these steps. The system has an unlimited supply of work available to be performed (i.e., demand exceeds capacity). Process step 1 2 Set up time 50 min 120 min Runtime 2 min/unit 1 min/unit 5 min/unit 0 Flow Time (*10 points) Assume that the process starts empty, that set-ups at steps 1 and 2 cannot begin until work arrives, that the production batch is 10 units at each step, and that the transfer batch between steps 1 and 2, and between steps 2 and 3 is also 10 units (i.e., the units in a production batch must be moved together between steps) and all transfers are effectively instantaneous. How long does it take to complete a batch of 10 units? How does your flow time answer change if the transfer batch between steps 1 and 2. and between steps 2 and 3 is 1 unit (1.e., the unit completed at one step may be passed immediately to the next step)? Explain your answers. If useful, feel free to use a Gantt chart to map the process flow. For the transfer batch of 10 units, pick from the following choices: a. 80 minutes b. 250 minutes c. 278 minutes d. 320 minutes e. 390 minutes f. none of the above Show transcribed image text