This document discusses material requirements planning (MRP) and production scheduling. It explains that MRP converts a master schedule into requirements for finished goods by using a bill of materials, inventory data, and a master production schedule as inputs. It also discusses dispatching and expediting, which involve setting and following up on production activities according to plan. Common forms, rules, and tracking methods used in dispatching and expediting are described.

1. PRODUCTION SCHEDULING
2ND HALF
UNIT - IV

2. MATERIAL REQUIRMENTS PLANNING (MRP)
 It converts master schedule in to a final product
INFORMATION NEEDED FOR MRP:
1. Demand for all products
2. Items for finished goods
3. Safety stock requirements
INPUTS TO MRP:
1. Master production schedule
2. Bill of materials file
3. Inventory record file

3. MRP STRUCTURE

4. 1. MASTER PRODUCTION SCHEDULE
1. Sale or distribution during specific period
 INPUTS TO MPS:
 Market requirements
 Production plan to aggregate planning
 Resources available
 BILL OF MATERIALS:
 How many, each of them used.
 INVENTORY RECORD FILE:
 Item master data segment
 Inventory status
 Subsidiary data segment

5. BENEFITS OF MRP
 Reduce inventory levels
 Reduce production lead time
 Improve product quality
 Better production schedule
 Better machine utilisation

6. DISPATCHING AND
EXPEDITING
 DISPATCHING
 Setting productive activities in motion
 Accordingly with previous planned time and
sequence

7. DISPATCHING ACTIVITIES
1. Movement of material from store
2. Issue of tool orders
3. Issue of job orders
4. Issue of time tickets
5. Issue of inspection orders
6. Issue of move orders

8. COMMON FORMS USED IN
DISPATCHING (8mark)
1. Material requisitions
1. Issuing material from store
2. No material issue without written requisitions
2. Job cards/ tickets
1. Worker identity for a material
2. Recording the production progress
3. Labour cards / tickets
1. It is knows as wage payment cards
2. Usually job and labour cards are combines

9. 4. Move cards/ tickets
1. Movement of material between operations
5. Inspection cards / tickets
1. Report the quantity of work passed / rejected
6. Tool and gauge tickets
1. To issue any tool under requirements

10. DISPATCHING RULES
1. FCFS (First Come First Serve)
2. SOT (Shortest Operation Time)
3. Earliest due dates
4. STR (Slack Time Remaining)
5. STR/OR (Slack Time Remaining per Operation)
6. CR (Critical Ratio)
7. QR (Queue ratio)

11. EXPEDITING
(PROGRESSING)
 Expediting:
 Also known as follow – up or progressing
 Plan till job is completed
 FUNCTIONS OF EXPEDITING:
 Status reporting
 Attending holds-ups
 Modifying the production plans
 Co-ordinating with purchase

12. TYPES OF PROGRESSING
(8 MARK)
1. Programme control
1. Comparing the actual output production with the
production programme
2. Different recording tools used for these purpose include
gannt chart
2. Order progressing
1. Control of internal orders with purchased requisitions
2. Four main progressed system are:
1. Due filling date
2. Order delivery records
3. Operation progressing records
4. List order progress

13. 3. Shortage chasing:
 comparing the actual availability of materials and
parts and quantities required for production
4. Daily plan progressing:
 Ensure that Daily plans are achieved .
5. Departmental progress control:
 To assess the efficiency of the different production
departments

14. RECORDING PROGRESS
 As we discussed earlier many recording tools
are available.
1. Gantt charts
2. Visual charts
3. Cumulative and weekly charts

15. 1. GANTT CHARTS:
1. It is used to provide an immediate comparison
between schedule and reality
2. VISUAL CHARTS:
1. it is nothing but variations in gantt chart.
3. CUMULATIVE WEEKLY CHARTS
1. Weekly fluctuations in production.