1. Shown in Figure 16.12 is the BOM for a large motor assembly. An MRP system is used to schedule each step. For motor assemblies, the lot size is 100 units and the lead time is one week. Eighty motors/wk are assembled. There are currently 110 units in stock. The MRP record for the motor assembly is as follows:

Assembly of the housing and drilling of the hole in the housing are done in two separate areas of the plant. The final motor assembly is done in a third area. It is proposed that the brace and shell assembly, drilling the hole, and final assembly of finished motors all be done in a single workcell. What would the BOM reflecting this change look like?

Answering Instruction:

Use the unit for D ( units/day), Q (units), C (days),and N (deliveries). Express your BOM answers in the format (D,Q,C,N) to be entered in the below box as follows: 300,20,3,1

e.g. if your results are D = 300, Q = 20, C = 3, N = 1, enter 300,20,3,1

2. Assume a lot size of 30, a hand inventory of 80, and a lead time of one week. What would the MRP record for the brace look like in terms of S-kanbans?

\begin{tabular}{|l|c|c|c|c|c|c|} \hline \multirow{2}{*}{} & \multicolumn{7}{|c|}{ Week } \\ \cline { 2 - 7 } & 0 & 1 & 2 & 3 & 4 & 5 \\ \hline Gross requirement (GR) & & 80 & 80 & 80 & 80 & 80 \\ \hline Scheduled receipts (SR) & & & & & & \\ \hline On hand (OH) & 110 & 110 & 30 & 50 & 70 & 90 \\ \hline Net requirement (NR) & & & 50 & 30 & 10 & \\ \hline Planned order release (POR) & & 100 & 100 & 100 & & \\ \hline \end{tabular} Motor assembly \begin{tabular}{|l|c|c|c|c|c|c|} \hline \multirow{2}{*}{} & \multicolumn{7}{|c|}{ Week } \\ \cline { 2 - 7 } & 0 & 1 & 2 & 3 & 4 & 5 \\ \hline Gross requirement (GR) & & 80 & 80 & 80 & 80 & 80 \\ \hline Scheduled receipts (SR) & & & & & & \\ \hline On hand (OH) & 110 & 110 & 30 & 50 & 70 & 90 \\ \hline Net requirement (NR) & & & 50 & 30 & 10 & \\ \hline Planned order release (POR) & & 100 & 100 & 100 & & \\ \hline \end{tabular} Motor assembly