Ops Management Essay

MRP and CRP ADM 3301 students are reminded that submitted assignments must be neat, readable, and well-organized. Assignment marks will be adjusted for sloppiness, poor grammar and spelling, as well as for technical errors. Plagiarism on assignments will not be accepted, each student must sign the statement of integrity.

E-mail questions related to the assignment should be sent to the Teaching Assistant. Section A: S. M. Amin Kamali ([email protected] ca) Section B and Section C: Sara Barghi ([email protected] ca) Problem #1 The following table lists the components needed to assemble a final product FP, lead times (in weeks) and quantities on hand. item |Lead Time |Amount on Hand |Direct Components | |FP |1 |10 |L(3), C(1), K(2) | |L |3 |20 |B(1), J(3) | |C |2 |15 |G(2), B(2) | |K |3 |40 |H(4), B(3) | |B |2 |25 | | |J |2 |30 | | |G |1 |5 | | |H |1 |- | | a) If 60 units of the final product FP are to be assembled, how many additional units of B are needed? (You don’t need to develop and MRP plan) b) An order of 60 units of the final product FP is scheduled to be shipped at the start of week 10. What is the latest week that the order can be started and still be ready to ship on time? (You don’t need to develop and MRP plan) Problem # 2 The demand for assembly S is 150 units at the start of week 6. Each unit of S requires 2 units of T and 3 units of U.

Each unit of T requires 2 units of V, 1 unit of W, and 4 units of X. Finally, each unit of U requires 3 units of Y and 1 unit of X. One firm manufactures all items. It takes 1 week to make S, 2 weeks to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, and 2 weeks to make Y. a) Construct a product structure tree at a lowest level coding (e. g. Identify all levels, parents, and components). b) Prepare a time-phased product structure. c) Construct a Materiel Requirements Plan (MRP) using the following on-hand inventory |Item |On-hand inventory | |S |30 | T |40 | |U |20 | |V |30 | |W |250 | |X |50 | |Y |80 | d) In addition to the 150 units of S at the start of week 6, there is also a demand of 50 units of U, which is a component of S. The 50 units of U are needed for maintenance purposes. These 50 units are needed at the start of week 4. Modify the MRP to reflect this change. e) Is the MRP in part d) feasible? If it is not feasible provide a recommendation on how to make it feasible. Problem # 3

A company that manufactures paving material for driveways and parking losts expects the following demand for its product for the next four weeks. |Week Number : |1 |2 |3 |4 | |Material (Tonnes) : |40 |50 |85 |60 | The company’s labour and machine time standards and available capacities are: LabourMachine Production standard (Hours per tonne)34 Weekly production capacity (Hours)200300 a) Determine the capacity requirement for labour and machine for each of the four weeks. b) In which week(s) do you foresee a problem? What options would you suggest to resolve any problems? What costs are relevant in making a decision on choosing an option?