Draw the corresponding time-phased diagram

Assignment Help Operation Management

Reference no: EM131265776

Question 1 Inventory Management

Corner Stone Garage service vehicles for the Rock Stone and surrounding communities. Part TZ120 is a popular part used by the garage. Daily demand for the part is 120 with a standard deviation of 25. The garage operates 350 days per year. The cost of TZ120 is $150. The carrying cost for the part is 25% of the unit cost per annum. The ordering cost is $40. The lead time is 3 days. The garage wants to maintain a service level of 95% (2 standard deviations).

Current on-hand inventory is 500 units, with no open orders or backorders.

i. What is the EOQ?
ii. What is the number of order placed per year?
iii. What would be the average time between orders?
iv. What is the ROP?
v. An inventory withdrawal of 100 units was just made. - Is it time to reorder?

vi. If the store currently uses a lot size of 350 units, determine the annual holding cost and the annual ordering cost of this policy?

vii. What would be the annual cost saved, if any, by shifting from the 350-unit lot size to the EOQ?

Question 2 - Materials Requirements Planning

An MRP exercise is being implemented over an 8-week period and the following relevant information is provided:

One unit of A is made of four units of B, three units of C, and two units of D. B is composed of two units of E and two unit of D. C is made of four unit of B and two units of E. E is made of three unit of F.

Items B, C, E and F have one week lead times; A and D have lead times of two weeks. Assume that lot-for-lot (L4L) lot sizing is used for Items A, B, E and F; lots of size 50 and 100 are used for Items C and D respectively. Items C, E and F have on-hand (beginning) inventories of 20, 50 and 100, respectively; all other items have zero beginning inventory. We are scheduled to receive 20 units of A in Week 2, 40 units of E in Week 1, and also 100 units of F in Week 1. There are no other scheduled receipts.

a) Draw the product structure tree.

b) Draw the corresponding time-phased diagram showing lead times to scale.

c) If 60 units of A are required in Week 8, determine the necessary planned order releases for all components {6 schedules}

Question 3

The following matrix shows the costs in thousands of dollars for assigning Individuals A,B, C and D to Jobs 1, 2, 3 and 4.

Individuals	Jobs
Individuals	1	2	3	4
A	10	12	4	5
B	3	11	7	6
C	3	5	6	5
D	6	9	10	12

a) Determine the final assignments that will minimize total cost, using the "Hungarian LP method"

b) Write an LP formulation of the problem

Item:
Periods	0	1	2	3	4	5	6	7	8
Gross Requirements
On Hand Inventory - Ending
Net requirements
Net receipts
Planned order release

Item:
Periods	0	1	2	3	4	5	6	7	8
Gross Requirements
On Hand Inventory - Ending
Net requirements
Net receipts
Planned order release

Item:
Periods	0	1	2	3	4	5	6	7	8
Gross Requirements
On Hand Inventory - Ending
Net requirements
Net receipts
Planned order release

Reference no: EM131265776

Questions Cloud

What is the total partnership capital : Peter, Roberta, and Dana have the following capital balances; $80,000, $100,000 and $60,000, respectively. The partners share profits and losses 20%, 40%, and 40% respectively. What is the total partnership capital after Roberta retires receiving $16..

Describe several reasons for studying marketing : Describe several reasons for studying marketing. - Write a letter to a friend or family member explaining why you think that a course in marketing will help you in your career in some field other than marketing.

Cost-minimizing solution for product : A product has a demand of 507 units per year. Ordering cost is $71 per order, and holding cost is $9 per unit per year. The cost-minimizing solution for this product is to order how many units at a time? (Round to the nearest integer)

Partnership and the goodwill method : P, L, and O are partners with capital balances of $50,000, $30,000 and $20,000 and who share in the profit and loss of the PLO partnership 30%, 20%, and 50%, respectively, when they agree to admit C for a 20% interest. If C contributes $40,000 to the..

Draw the corresponding time-phased diagram : MGMT 3060 - Problem Sheet Assignment Draw the product structure tree and Draw the corresponding time-phased diagram showing lead times to scale - Determine the final assignments that will minimize total cost, using the Hungarian LP method.

Discuss by means of mmf phasor diagrams : Discuss by means of mmf phasor diagrams the changes that occur in the power output, magnitude and phase angle of the armature current and torque angle.

Why should you take a risk : How do you know if the ERM framework is working well in your company? What are the mechanisms for your company to measure your ERM framework?

Earned after taxes subsequent to date of the agreement : Ace Inc. produces electronic components for sale to manufacturers of radios, television sets, and digital sound systems. A 10-year loan agreement, which the company entered into 3 years ago, provides that dividend payments may not exceed net income e..

What form these take for linear magnetization : Write the expression relating the electrical power converted to the mechanical form in a dc motor. How are the electrical power input and mechanical power output different from these powers?

User Account

All Pages