9. Operations Management

9.3 Operations Strategy

9.3.5 Operations Planning

The Need For Planning Operations

• Definition Of Operations Planning
  • Operations Planning Is The Process Of Organising Production Resources, Scheduling Activities, And Coordinating Inputs To Deliver Goods And Services Efficiently.
  • It Involves Deciding What To Produce, When To Produce, Where To Produce, And How To Produce.
• Reasons Why Planning Operations Is Necessary
  • Efficient Use Of Resources
    • Ensures Labour, Machines, And Materials Are Utilised Effectively.
    • Reduces Idle Time And Wastage.
  • Meeting Customer Deadlines
    • Careful Planning Ensures Products Or Services Are Delivered On Time.
    • Timeliness Builds Customer Loyalty And Competitive Advantage.
  • Cost Control
    • Proper Scheduling And Coordination Reduce Production Costs.
    • Minimises Inventory Holding Costs Through Better Timing Of Production.
  • Risk Management
    • Planning Identifies Potential Bottlenecks, Shortages, Or Delays In Advance.
    • Helps Businesses Prepare Contingency Plans.
  • Capacity Management
    • Ensures That The Business Has The Right Level Of Capacity To Meet Demand.
    • Prevents Problems Of Overcapacity (Wasted Resources) Or Undercapacity (Missed Sales).
  • Coordination Between Departments
    • Aligns Marketing, Production, And Finance To Work Towards Common Goals.
    • Example: Marketing Launches A New Product Only After Operations Confirms Production Capacity.

Network Diagrams As Tools To Plan Operations

• Definition Of Network Diagrams
  • Network Diagrams (Also Called Project Networks) Are Visual Tools That Represent The Sequence Of Activities Required To Complete A Project.
  • They Show The Order Of Tasks, Duration, Dependencies, And Overall Flow Of The Project.
  • Used To Perform Critical Path Analysis (CPA).
• Purpose Of Network Diagrams
  • Identify The Most Efficient Sequence Of Activities.
  • Determine Dependencies Between Tasks.
  • Highlight Which Activities Can Run Simultaneously And Which Must Be Sequential.
  • Calculate The Minimum Time Required To Complete The Project.
  • Help Managers Allocate Resources Effectively.
• Practical Example
  • In Building A House, A Network Diagram Shows That Laying Foundations Must Be Completed Before Constructing Walls, But Plumbing And Electrical Work Can Occur Simultaneously Once Walls Are Built.

Written And Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Business Full Scale Course

The Main Elements Of A Network Diagram

Activities

• Activities Represent The Tasks That Need To Be Completed As Part Of The Project.
• Each Activity Has A Duration And May Depend On The Completion Of Other Activities.
• Represented By Arrows In Network Diagrams.
• Example: “Design Website” May Take 5 Days; “Develop Website” Can Only Start After Design Is Completed.

Dummy Activities

• Dummy Activities Show Dependencies Between Tasks Without Consuming Time Or Resources.
• Represented By A Dashed Arrow.
• Their Only Purpose Is To Indicate The Logical Relationship Between Activities.
• Example: Task C Cannot Start Until Both Task A And Task B Are Finished, Even If Task B Takes 0 Time.

Nodes

• Nodes Represent The Start Or End Of Activities.
• They Are Shown As Circles Or Rectangles In The Network Diagram.
• Each Node Is Numbered Sequentially.
• Example: Node 1 May Represent The Start Of A Project; Node 6 May Represent The End.

Network Diagrams As Means Of Performing Critical Path Analysis (CPA)

Meaning Of Critical Path Analysis

• CPA Is A Project Management Tool That Identifies The Longest Path Of Dependent Activities Through A Network Diagram.
• The Critical Path Determines The Minimum Project Duration, As Any Delay In These Activities Will Delay The Entire Project.

Steps In CPA

1. List Activities: Identify All Tasks Required To Complete The Project.
2. Estimate Duration: Assign Time Estimates To Each Activity (In Days, Weeks, Or Hours).
3. Identify Dependencies: Determine Which Activities Must Be Completed Before Others Begin.
4. Construct Network Diagram: Draw Activities As Arrows And Nodes To Show Sequences.
5. Forward Pass: Calculate Earliest Start Time (EST) And Earliest Finish Time (EFT) For Each Activity.
   • EST Of First Activity = 0.
   • EFT = EST + Duration.
   • For Activities Converging Into One Node, Use The Largest EFT As The EST Of The Next Activity.
6. Backward Pass: Calculate Latest Finish Time (LFT) And Latest Start Time (LST).
   • LFT Of Final Activity = Project Duration.
   • LST = LFT − Duration.
   • For Activities Diverging From A Node, Use The Smallest LST As The LFT Of The Previous Node.
7. Identify Critical Path: Activities With Zero Float (No Slack Time) Form The Critical Path.

Written And Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Business Full Scale Course

Identification Of The Minimum Project Duration And Critical Path

• The Critical Path Is The Sequence Of Activities That Takes The Longest Time To Complete.
• The Duration Of The Critical Path Determines The Minimum Time To Complete The Project.
• Example: If The Longest Path Through A Network Diagram Adds Up To 24 Weeks, Then The Project Cannot Be Completed In Less Than 24 Weeks.

Calculation Of Total Float

• Total Float Is The Amount Of Time An Activity Can Be Delayed Without Delaying The Entire Project.
• Formula:
  • Total Float = LFT − EST − Duration.
• Example: If EST = 5 Days, LFT = 15 Days, Duration = 6 Days → Total Float = 15 − 5 − 6 = 4 Days.

Calculation Of Free Float

• Free Float Is The Amount Of Time An Activity Can Be Delayed Without Delaying The Next Dependent Activity.
• Formula:
  • Free Float = Earliest Start Time Of Next Activity − EST − Duration.
• Example: If Next Activity EST = 14 Days, Current Activity EST = 6 Days, Duration = 5 Days → Free Float = 14 − 6 − 5 = 3 Days.

Interpretation Of CPA Results

• Activities On The Critical Path Must Be Prioritised, As Any Delay Affects The Entire Project.
• Activities With Float Provide Flexibility In Scheduling Resources.
• Managers Can Use Float To Reallocate Resources To Critical Tasks Without Delaying Overall Completion.

Use Of Minimum Duration And Floats In Project Management

• Minimum Duration Helps Managers Set Realistic Deadlines For Project Completion.
• Floats Allow Managers To Adjust Schedules, Reallocate Resources, And Manage Unexpected Delays.
• Example: In Building A Stadium, Activities Such As Laying Foundations May Be Critical, While Landscaping Has Float And Can Be Delayed Without Affecting Final Completion.

Written And Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Business Full Scale Course

Benefits Of CPA As A Management Tool

• Improved Planning And Scheduling
  • Identifies The Most Efficient Sequence Of Activities.
  • Helps Managers Allocate Resources Effectively.
• Identification Of Critical Activities
  • Highlights The Tasks That Must Be Completed On Time To Avoid Project Delays.
• Better Use Of Resources
  • Float Information Helps Managers Reallocate Resources To Critical Tasks.
• Risk Management
  • Identifies Potential Bottlenecks And Delays Early.
  • Managers Can Develop Contingency Plans.
• Supports Strategic Decision Making
  • Provides Clear Information On Project Timelines And Dependencies.
  • Useful For Deciding Whether Projects Are Feasible.
• Improved Communication
  • Visual Representation Of Activities Makes It Easier To Communicate Plans To Employees And Stakeholders.
• Monitoring And Control
  • Managers Can Track Progress Against Planned Timelines.
  • Helps Identify When Projects Are Falling Behind Schedule.

Limitations Of CPA As A Management Tool

• Estimates May Be Inaccurate
  • CPA Relies On Time Estimates That May Be Wrong Or Unrealistic.
  • Example: Construction Projects Often Face Delays Due To Weather Or Legal Issues.
• Complexity
  • Large Projects With Many Activities May Produce Very Complex Network Diagrams.
  • Difficult For Managers To Understand And Use.
• Focus On Time Only
  • CPA Focuses On Time Management But Ignores Costs And Quality.
  • A Project Completed On Time May Still Be Over Budget Or Low Quality.
• Not A Guarantee Of Success
  • CPA Helps With Planning, But Unexpected Events Can Still Cause Delays.
  • Example: Natural Disasters Or Sudden Policy Changes Can Disrupt Plans.
• Requires Skilled Managers
  • Accurate CPA Requires Skilled Staff To Construct And Interpret Network Diagrams.
  • Lack Of Skills Can Lead To Misinterpretation And Poor Decisions.
• Over-Reliance Risk
  • Managers May Rely Too Heavily On CPA And Ignore Other Aspects Like Motivation Or Market Conditions.

Written And Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Business Full Scale Course

Case Studies And Real-World Examples

• Olympic Games Construction Projects
  • Network Diagrams And CPA Are Used To Plan The Construction Of Stadiums, Transport Links, And Infrastructure.
  • Critical Path Activities Such As Building Main Stadiums Cannot Be Delayed Without Affecting The Entire Event.
• Airbus A380 Project
  • Delays Occurred Because Of Poor Coordination Between Production Teams In Different Countries.
  • Highlighted The Importance Of Accurate CPA And Coordination Across Functions.
• IT System Development Projects
  • Software Companies Use CPA To Plan Development Stages From Coding To Testing And Launch.
  • Example: Microsoft Uses CPA To Manage Large-Scale Software Updates.
• Construction Industry
  • CPA Is Widely Used To Plan Building Projects.
  • Example: Large Construction Firms Use Network Diagrams To Schedule Subcontractors, Materials, And Equipment.
• Film Production
  • Film Studios Use CPA To Schedule Shooting, Editing, And Marketing Activities.
  • Critical Path Includes Shooting And Editing; Promotional Activities May Have Some Float.

Evaluation Of Operations Planning Through CPA

• Strengths
  • Provides A Clear Visual Representation Of Complex Projects.
  • Identifies Critical Tasks And Helps Avoid Delays.
  • Improves Resource Allocation And Efficiency.
  • Supports Risk Management And Contingency Planning.
  • Enhances Communication Among Stakeholders.
• Weaknesses
  • Time Estimates May Be Inaccurate, Leading To Misleading Results.
  • Large Projects May Produce Overly Complex Diagrams.
  • Does Not Consider Costs, Quality, Or External Risks.
  • Requires Skilled Managers To Interpret Correctly.
• Overall Assessment
  • CPA Is A Valuable Tool For Operations Planning, Especially In Large And Complex Projects.
  • It Should Be Used Alongside Other Tools Such As Budgeting, Risk Analysis, And Quality Management.
  • When Combined With Good Leadership And Communication, CPA Supports Efficient And Effective Project Management.

Written And Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Business Full Scale Course