Problems 357 The GHI Company produces models A, B, C, and D on an assembly line

Question

Problems 357 The GHI Company produces models A, B, C, and D on an assembly line that operates 250 eight- hour days per year. The demand forecasts are: 8. Model Annual forecast 1,000 3,000 7,000 9,000 a. Determine the mixed-model master production schedule for a daily batch and hourly batch with minimum batch sizes. b. Determine the schedule of production for an eight-hour day using mixed-model minimum batch production. The GHI Company makes air conditioners, in either the standard model or additionally with a special option it calls the "turbo-charger using the following indented bill of materials. The air conditioners are assembled at a rate 600 per five-day week, and the turbo-charger is added to every fourth unit. Develop the 10-week MRP record for the turbo-charger, using a one-week lead time, no safety stock, a lot size of 800, and a starting inventory of 200. Air Conditioner 9. Part no. 101 (1 required) Part no. 102 (1 required) Part no. 103 (1 required) Turbo-charger assembly & required) Coupling (1 required)

Explanation / Answer

Mixed Model Production sequence

It refers to distribute the production of different product types evenly over the course of a day

Here 250 days are available in a year

Steps for determining the MMP schedule

Daily requirements

A= 1000/250= 4

B= 3000/250=12

C= 7000/250 = 28

D = 9000/250= 36

Total products= 36+28+12+4= 80

Repeating sequence

Determine the largest integer that divides evenly into all daily requirements of all the products

Here the largest integer divisor =4

The ratio = 1:3:7:9

Sum of ratios = 20

Each repeating sequence will have 20 units and 1 unit of A , 3 units of B, 7 units of C, 9 units of D

Hourly sequence

Hourly requirement

A= 4/8=0.5

B=12/8 = 1.5

C= 28/8= 3.5

D= 36/8= 4.5

Changing them to integer the ratio would be

1:2:4:5

Total products per hour= 1+2+4+5=12

1 unit of A 2 units of B, 4 units of C and 5 units of D

b) Production plan according to the daily MMP sequence(ratio1:3;7:9)

A possible sequence would be

ABBBCCCCCCCDDDDDDDDD

This is the somewhat batch type and if we change it to mixed model type

ABCDBCDBCDCDCDCDCDDD this is the best possible mixed model production sequence

Please comment of any doubt

rateme

thanks

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