1) What is Production Planning and Control?
Production Planning and Control, usually called PPC, is the function that makes sure production happens in the right way, at the right time, in the right quantity, and with proper control.
In simple words:
PPC = deciding the production work in advance and then checking that the work is actually happening according to plan
So PPC has two parts:
Production Planning
This means deciding beforehand:
- what to produce
- how much to produce
- how to produce
- when to produce
- where to produce
Production Control
This means checking:
- is the work going according to plan?
- are there delays?
- is any machine or department causing a problem?
- do we need correction?
So PPC is like:
- first making the production roadmap
- then making sure the roadmap is followed properly
PPC is considered very important for efficiency and cost saving in production.
2) Very easy meaning
Think of a school exam.
Before the exam, the school must decide:
- exam dates
- subject order
- room allocation
- invigilator assignment
This is the planning part.
On the exam day, the school must check:
- did the exam start on time?
- are rooms ready?
- are question papers available?
- is everything going according to plan?
This is the control part.
Production Planning and Control works in the same way inside a factory or production system.
3) Why PPC is needed
Without PPC, production may become disorganized.
Problems may happen like:
- materials may not be available on time
- machines may stay idle
- workers may wait for instructions
- one department may do extra work while another has no work
- delivery dates may be missed
- production cost may increase
PPC avoids these problems by bringing order and coordination.
That is why PPC helps:
- smooth production flow
- better use of machines
- better use of workers
- reduced delays
- reduced wastage
- timely delivery
- better coordination between departments
- improved productivity
4) Main objective of PPC
The main objective of PPC is:
to produce the required goods, of the required quality, in the required quantity, at the required time, with minimum cost
This is the heart of the topic.
It means PPC tries to balance:
- time
- quantity
- quality
- resources
- cost
5) Difference between production planning and production control
This is one of the most important parts to understand clearly.
Production Planning
Planning is done before production starts.
It decides:
- product quantity
- production process
- machine requirement
- manpower requirement
- material requirement
- time schedule
So planning is future-oriented.
Production Control
Control is done during and after execution.
It checks:
- whether the plan is being followed
- whether work is delayed
- whether any correction is needed
- whether actual output matches the target
So control is action-oriented.
Simple memory:
- Planning = deciding in advance
- Control = checking and correcting during execution
Your course material also shows that control activity is performed after execution of the plan.
6) Functions of PPC
PPC has several major functions. The most important sequence is:
Routing → Scheduling → Dispatching → Follow-up
Let us understand each one properly.
7) Routing
Routing means deciding the path through which work or material will move from start to finish.
In simple words:
Routing answers this question:
“Through which machines, operations, or departments should the job pass?”
Example:
Suppose a factory is making a metal chair.
The work may move like this:
- cutting section
- bending section
- welding section
- painting section
- finishing section
- packing section
This path is called routing.
So routing is like choosing the road a product must travel inside the plant.
8) Why routing is important
Routing is important because it:
- creates smooth production flow
- avoids confusion
- reduces unnecessary movement
- saves time
- helps machine utilization
- helps cost control
If routing is poor, materials may move in the wrong order, backtrack unnecessarily, or wait too long between operations.
9) Scheduling
Scheduling means fixing the time and date for each operation. It is basically the timetable of production activities.
Scheduling answers:
- when should the job start?
- when should each operation happen?
- when should the job finish?
- which machine will work at what time?
So if routing decides the path, scheduling decides the time.
Example:
- cutting: 9 AM to 10 AM
- welding: 10:30 AM to 12 PM
- painting: 1 PM to 2 PM
- packing: 3 PM to 4 PM
That is scheduling.
We already covered scheduling as a separate topic, but in PPC it is understood as one important step in the full production control system.
10) Sequencing
Sequencing means deciding the order in which jobs should be processed.
This becomes necessary when:
- many jobs are waiting
- machines are limited
- delivery dates are different
Example:
Three customer orders are waiting on one machine.
The manager must decide:
- which one goes first
- which one goes second
- which one goes third
That decision is sequencing.
Simple memory:
- Routing = path
- Sequencing = order
- Scheduling = time
11) Dispatching
Dispatching means giving the actual order or authorization to start production work.
This is the action step.
After routing and scheduling are ready, dispatching tells:
- workers to begin work
- machines to start the assigned job
- materials to be moved
- tools to be issued
- instructions to be followed
So dispatching puts the plan into operation.
Simple understanding:
- planning prepares the work
- scheduling sets the timing
- dispatching says: “Now start the job.”
12) Follow-up
Follow-up means monitoring production progress and checking whether the work is going according to plan.
It answers:
- is the job moving on time?
- is any department delayed?
- is any machine causing blockage?
- are materials available?
- is corrective action needed?
Follow-up is very important because production rarely goes exactly as planned.
Real problems happen like:
- machine breakdown
- worker absence
- late material arrival
- quality rejection
- rush orders
So follow-up helps management detect problems early and take action.
13) Easy flow of PPC
A very simple way to understand PPC is this:
First, the company decides what to do.
Then it decides the path.
Then it decides the time.
Then it starts the work.
Then it checks whether the work is moving properly.
So the full flow becomes:
Plan the work → route the work → schedule the work → dispatch the work → follow up the work
That is PPC in simple language.
14) Objectives of PPC
The major objectives of PPC are:
A) Smooth flow of production
Production should move without unnecessary stoppage.
B) Better use of resources
Machines, labor, and materials should be used properly.
C) Timely completion
Jobs should be completed on or before due date.
D) Reduced wastage
Proper control reduces unnecessary loss of materials, time, and effort. PPC also supports cost control through wastage reduction.
E) Lower production cost
When delays and idle time are reduced, cost also decreases.
F) Better coordination
Different departments such as purchasing, stores, production, inspection, and dispatch must work together.
G) Improved customer service
When goods are produced on time and delivered properly, customer satisfaction improves.
15) Importance of PPC in production
PPC is important because it connects all production activities in a coordinated way.
Without PPC:
- the store may not issue material on time
- machines may not be assigned properly
- workers may not know priority
- jobs may miss deadlines
- quality checking may be delayed
With PPC:
- work becomes organized
- resources are balanced
- delays are reduced
- management gets better control
So PPC is like the brain of the production system.
16) PPC in different production systems
PPC is needed in all production systems, but its difficulty changes.
Job production
PPC is more difficult because each job is different.
Batch production
PPC is moderately difficult because batches must be planned and scheduled carefully.
Mass production
PPC is easier in some ways because the flow is repetitive, but control is still very important because a problem at one stage may affect the entire line.
So PPC is universal, but the way it is applied depends on the production type.
17) Documents and tools used in PPC
PPC uses different documents and tools to make production systematic.
Common examples are:
- route sheets
- job cards
- machine loading charts
- schedules
- production orders
- dispatch orders
- progress reports
- Gantt charts
These tools help management know:
- what work is assigned
- where it is assigned
- when it must happen
- whether it is on time
18) Role of forecasting in PPC
PPC does not work alone. It depends on forecasting.
Forecasting tells the company:
- expected demand
- expected sales
- future workload
Based on that, PPC decides:
- how much to produce
- when to produce
- what capacity is needed
- what material should be arranged
So forecasting supports production planning.
19) Role of inventory and purchasing in PPC
PPC also depends on:
- purchasing
- stores
- inventory management
Why?
Because production cannot happen unless:
- raw materials are available
- components are available
- tools are available
- stock levels are known
So PPC works closely with purchase and stores departments.
20) Difference between PPC and scheduling
This is another common confusion.
Scheduling is only one part of PPC.
PPC is a broader concept that includes:
- planning
- routing
- sequencing
- scheduling
- dispatching
- follow-up
- control
So:
Scheduling is a subtopic of PPC, not the whole PPC
21) Problems faced in PPC
Even with good planning, PPC may face many practical problems:
- incorrect demand estimate
- machine breakdown
- material shortage
- labor absenteeism
- poor supplier performance
- power failure
- urgent customer orders
- changes in product design
- quality defects
That is why PPC must be flexible and continuously monitored.
22) Benefits of good PPC
A strong PPC system gives many benefits:
- better production flow
- improved machine use
- less idle time
- less work-in-progress
- lower wastage
- lower cost
- improved quality consistency
- timely completion of jobs
- better coordination
- higher productivity
In short, PPC improves both efficiency and control.
23) Simple real-life example
Suppose a furniture factory gets an order for 500 school desks.
PPC will decide:
- how much wood and hardware are needed
- which machines will be used
- in what order the processes will happen
- when cutting, drilling, assembly, polishing, and packing must be done
- when workers should begin each task
- how progress will be checked
- what to do if delays happen
So PPC manages the job from beginning to control stage.
24) Easy exam-style answer
Production Planning and Control is the process of planning production activities in advance and controlling them during execution to ensure smooth and efficient production. It aims to produce the right quantity of goods, at the right time, with proper quality and minimum cost. The major functions of PPC include routing, scheduling, sequencing, dispatching, and follow-up. Routing decides the path of work, scheduling fixes the time, dispatching starts the work, and follow-up checks progress and corrective action. PPC is important because it improves coordination, reduces wastage, ensures timely production, and increases productivity.
25) Very easy memory version
Remember this line:
PPC means deciding production work in advance and then controlling it properly until completion.
And remember the main sequence:
Routing → Scheduling → Dispatching → Follow-up
Also remember:
- Planning = before production
- Control = during and after production
26) Final easy example
Think of a bus trip.
Before the trip:
- route is chosen
- departure time is fixed
- driver is assigned
- seats are planned
During the trip:
- progress is checked
- delays are managed
- breakdowns are handled
- arrival is monitored
That is similar to PPC.
In production also:
- first the work is planned
- then the work is controlled
That full system is called Production Planning and Control.
