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You can associate a production line with a product family item.
Rate-based CRP calculates capacity requirements and availabilities for items you have defined as repetitive assemblies and assigned to production lines in Oracle Work in Process.
B and C are defined as repetitive assemblies and assigned to production lines in Oracle Work in Process.
Item | Line | Line Priority | Line Speed | Max Hourly Rate | Line Hours/Day | Line Days/ Week |
---|---|---|---|---|---|---|
B | Line 1 | 1 | 75 | 100 | 12 | 5 |
B | Line 2 | 2 | 50 | 100 | 6 | 5 |
C | Line 1 | 1 | 100 | 100 | 12 | 5 |
Table 1 - 24. Production Line Details for B and C (Page 1 of 1) |
Rate-based CRP:
The following tables show three plan entries for A.
Item | Order Start Date | Order End Date | Order Quantity |
---|---|---|---|
A | 07-FEB | 07-FEB | 100 |
A | 10-FEB | 10-FEB | 100 |
A | 15-FEB | 15-FEB | 100 |
Table 1 - 25. Master Schedule for A (Page 1 of 1) |
Remember that the lead times for A, B, and C are 2 days each, and that the usage quantities for B and C are 2 and 3 respectively. 05-FEB and 06-FEB are non workdays.
Item | Rate Start Date | Rate End Date | Daily Rate |
---|---|---|---|
B | 01-FEB | 01-FEB | 200 |
C | 01-FEB | 01-FEB | 300 |
B | 04-FEB | 04-FEB | 200 |
C | 04-FEB | 04-FEB | 300 |
B | 09-FEB | 09-FEB | 200 |
C | 09-FEB | 09-FEB | 300 |
Table 1 - 26. Required Dates and Required Rates for B and C (Page 2 of 2) |
The following table illustrates how the repetitive schedule allocation process would divide the two repetitive schedules across Lines 1 and 2 using the line priorities and line speeds specified earlier.
Item | Line | Required Rate | Max Hourly Rate | Line Speed | Load Factor | Load Rate |
---|---|---|---|---|---|---|
B | Line 1 | 200 | 100 | 75 | 1.33 | 267 |
C | Line 1 | 300 | 100 | 100 | 1 | 300 |
Table 1 - 27. Repetitive Schedule Allocation (Page 1 of 1) |
In this example, the maximum hourly rate for Line 1 is 100/hour, and the line speed for item B on Line 1 is 75/hour. Rate-based CRP would calculate the load factor for item B on Line 1 as 100/75 = 1.33.
In this example, the required rate for item B on Line 1 is 200/hour, and the load factor for item B on Line 1 is 1.3. Rate-based CRP would calculate the load rate as 200 x 1.33 = 267 units per hour.
The previous table illustrates the required rate for each item/line combination for one day. Rate-based CRP aggregates the load rates by line and stores them as a required rate for the line for each day within the period defined by the rate start and end dates.
The following table illustrates the required rates and dates for Line 1.
Line | Required Date | Required Rate |
---|---|---|
Line 1 | 01-FEB | 567 |
Line 1 | 04-FEB | 567 |
Line 1 | 09-FEB | 567 |
Table 1 - 28. Required Dates and Required Rates for Line 1 (Page 1 of 1) |
The following table illustrates how rate-based CRP uses required dates to bucket the required rates for Line 1 into weekly buckets. The example assumes that the first bucket starts on 31-JAN.
Week Start Date | Line | Required Rate |
---|---|---|
31-JAN | Line 1 | 1134 |
07-FEB | Line 1 | 567 |
Table 1 - 29. Bucketed Required Dates and Required Rates for Line 1 (Page 1 of 1) |
Rate-based CRP calculates the available rate for a production line using the following formula:
Line hours per day represents the start and stop times you specify for the production line in Oracle Work in Process. Line days per week reflect the number of workdays in the week based on the workday calendar you define in Oracle Bills of Material.
The following table illustrates how rate-based CRP would calculate the available rate for Line 1 assuming that you have defined it to be available 12 hours per day, 5 days per week. In this example, rate-based CRP would calculate the available rate for Line 1, for the week starting 31-JAN, as 100 x 12 x 5 = 6,000 units per week.
Line | Max Hourly Rate | Line Hours/Day | Line Days/Week | Available Rate |
---|---|---|---|---|
Line 1 | 100 | 12 | 5 | 6,000 |
Table 1 - 30. Available Rate for Lines 1 (Page 1 of 1) |
The following table illustrates how rate-based CRP would calculate capacity utilization for Line 1 for the weeks starting 31-JAN and 07-FEB. In the Resource Requirements Snapshot Example, the capacity utilization of Line 1 for the week starting 07-FEB is 1134/6000 x 100% = 18.9%.
Week Start Date | Required Rate | Available Rate | Capacity Utilization |
---|---|---|---|
31-JAN | 1134 | 6000 | 18.9% |
07-FEB | 567 | 6000 | 9.4% |
Table 1 - 31. Capacity Utilization (Page 1 of 1) |
Notice that the rough cut analysis reveals that Line 1 is underloaded in both weeks.
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