Question

3. (30 points) Consider the BOM tree of a sub-assembly, namely A. Land time (LT) consists of estimates for setup time, processing time, materials handling time between operations or waiting time, depending on the item type. Items (B,C,D,E,F,G) belong to one of the followings: raw materials, purchased parts of manufactured parts. LT is given in terms of weeks. Suppose that there is no on-hand inventory and no scheduled receipts for all items. How many units of items E, D, and G must be ordered produced and when to order/start production for these items to assemble X units of sub-assembly A7 (Let X be the sum of the numbers in your student ID number). Assume all months are composed of 4 weeks. Assume, the current time is the beginning of 1' week of May. For further production processes, subassembly A must be ready at the beginning of 1 week of May. Therefore, its assembly must be started at the beginning of 4 week in April, due to 1 week of lead time Assume that only one order can be given for D, so be careful with its timing. Note: Drawing a weekly timeline might be very useful to demonstrate the release and receipt times of order/production. Fill in the tables below. Show your work. Magie numbers are not Student ID Value of X Item How many to order or produce? When to give order or start production? (Beginning of which week of which month?)

Answer 1

• You had not provided with your student ID, Hence I will proceed with Value X. At the last use your student ID (sum of all digits) in the place of X and multiply with the corresponding figures. (Example: if your student ID = 2345, the sum of all digits of ID =14. Let D=4X then replace X=14. D=4*14=56units)
• We need to find the quantities for E, D & G
• Here 1,2,3,4 after month indicates a particular week of the month
• For a better understanding of the solution, I had to provide the complete planned order release schedule for each and every item

Qty req for Ea unit Lead time of A Remarks B C 3 2 13 4 3 Qty-3 for B, Qty -01 for C 6 6 Qty-02 for Each B(3*2=6) 1 1 I 3 F

B Mar 1 C Mar 3 END PRODUCT=A 2 Lead Time = 1 Week 3 Gross Requcements 4 Planned order Resents 5 Planned order Releases D Mar 4 0 0 0 E Apr 1 0 F Apr 2 0 0 0 G Apr 3 0 H I Apr 4 May 1 0 X 0 X X 0 0 0 0 0 0 0 0 0 0 T 0 Mar 4 Apr 1 Mar 1 0 0 0 Mar 3 0 0 0 O Apr 2 o 0 3 Apr 3 o 0 0 | Apr 4 May 1 3X 0 3X TO 0 0 0 0 0 0 | Mar2 | Apr 4 May 1 Item = B 7 Lead lime= 2 Week ne= 2 Week 8 Gross Requcements 9 Planned order Receipts 10 Planned order Releases 11 Item = C 12 Lead time = 3 Week 13 Gross Requirements 14 Planned order Receipts 15 Planned order Releases 16 Item =D 17 Lead time = 3 Week 18 Gross Requirements 19 Planned order Receipts 20 Planned order Releases | Mar 3 | Mar4 | Apr 1 | Apr 2 0 0 0 0 | 0 х 0 0 0 0 0 | Apr 3 0 0 0 0 х 0 0 0 | 0 Mar 2 0 0 4X Mar 3 0 0 0 Mar 4 O 0 0 Apr 1 х 4X 0 Apr 2 3X 0 0 Apr 3 0 0 0 Apr 4 May 1 0 0 0 0

21 Gross Requirements for D= 4x:Requirements for item Dis X till Apr 1 week for C and 3X for B in Apr 2 week. It is given in question we can only place order for D for one time. Hence We are placing combine requirements of 4X for both C and D in Mar 2 week without delaying requirements for Item C 24 Item=E Lead time = 6 Week 25 Gross Requirements 26 Planned order Receipts 27 Planned order Releases Feb 3 0 0 0 Feb 4 0 0 6 Mar 1 0 0 0 Mar 2 0 0 0 Mar 3 0 0 0 Mar 4 0 0 0 Apr 1 0 0 0 Apr 2 6X 6X 0 28 Mar 2 Mar 3 Mar 4 Apr 1 Apr 2 Apr 3 Apr 4 May 1 0 0 | 0 х 0 0 0 0 0 X 0 0 0 0 0 T0 X 0 TOTO TOTO 0 0 Item=F 1 Week 29 Lead time = 1 Week 30 Gross Requirements 31 Planned order Receipts 32 Planned order Releases 33 Item=G 34 Lead time = 3 Week 35 Gross Requirements 36 Planned order Receipts 37 Planned order Releases Feb 3 Feb 4 Mar 1 Mar 4 Apr 1 Apr 2 Mar 2 | Lar 3 0 0 38

Qty of items to order/ produce, Month and Week for order release:

D = 4*X, March 2 week

E=6*X, February 4 week

G= X, March 1 week

Note: Here X = sum of digits of student ID

Please like the answer, Thank you.