Chapter 27 - Homework Back O 1. EX.27.01 Compute Lead Time Isaacson Dental Inc. is considering a new lean product cell. The present manufacturing approach produces a product in four separate steps. The production batch sizes are 50 units. The process time for each step is as follows: 2. EX.27.02 Process Step 1 6 minutes 3. EX.27.03 Process Step 2 12 minutes Process Step 3 9 minutes 4. EX.27.04 Process Step 4 3 minutes 5. EX.27.07 The time required to move each batch between steps is 6 minutes. In addition, the time to move raw materials to Process Step 1 is also 6 minutes, and the time to move completed units from Process Step 4 to finished goods inventory is 6 minutes. 6. EX.27.14 The new lean layout will allow the company to reduce the batch sizes from 50 units to 2 units. The time required to move each batch between steps and the inventory locations will be reduced to 1 minute. The processing time in each step will stay the same. Determine the value-added, non-value-added, and total lead times, and the value-added ratio under the (a) present and (b) proposed production approaches. If required, round percentages to one decimal place. 7. MAD.27.02 Present Approach Proposed Approach 8. CMA.27.04 Value-added time 30 v min 30 v min Non-value-added time 1,485 X min 42 X min Total lead time 1,515 X min 72 X min Value-added ratio (as a percent) 1.98 %% 41.67 %% Fandback Chock My Work In this exercise for Present: Value-added processing time = Add together Process steps 1-4 Non-value-added time = Total within-batch wait time + Move time, where Total Within-Batch Wait Time = (Total Time to Perform Operations) x (Batch Size - 1) Add value-added processing time and non-value led processing time to obtain total processing time. Calculate Value-Added Ratio = Value-Added Process Time = Total Process Time In this exercise for Proposed: Value-added processing time = Add together Process steps 1-4 Non-value-added time = Total within-batch wait time + Move time, where Total Within-Batch Wait Time is obtained by multiplying the process time by the remaining units in the batch (waiting their turn) Add value-added processing time and non-value-added processing time to obtain total processing time. Calculate Value-Added Ratio = Value-Added Process Time + Total Process Time Check My Work 1 more Check My Work uses remaining. Previous Next Progress: 5/8 items Assignment Score: 25% All work saved. Save and Exit Submit Assignment for Grading