Presentation on theme: "1 EMBA-2, BUP EO - 702 Strategic Capacity Planning."— Presentation transcript:
1 EMBA-2, BUP EO Strategic Capacity Planning
EO M. AsadEMBA-2 Strategic Capacity Planning What is Capacity refers to an upper limit or ceiling on the load that an operating unit (plant, department, machine, stores and etc) can handle. Goal of Strategic capacity planning is to achieve a match between long term supply capabilities and predicted level of long term demand to supports the firms long term competitive strategy.
EO M. AsadEMBA-2 Basic questions in capacity handling 1. What kind of capacity is needed? – Depends on product/services that management intend to provide. 2. How much is needed? – The volume and certainty of anticipated demand – Strategic objectives in terms of growth, customer service and competitions – The cost of expansion and operation – Time Dimension of Capacity: Long Range Intermediate Range Short Range
EO M. AsadEMBA-2 Basic questions in capacity handling 3. When is it needed? –Capacity lead strategy –Capacity lag strategy –Average capacity strategy
EO M. AsadEMBA-2 Capacity Panning Concept Capacity used -rate of output actually achieved Best operating level -capacity for which the process was designed and thus is the volume at which average unit cost is minimized. Capacity Utilization Ratio revels how close a firm to its best operating point :
EO M. AsadEMBA-2 Design capacity = 50 trucks/day Effective capacity = 40 trucks/day Actual output = 36 units/day Efficiency = = 90% Effective capacity 40 units/ day Utilization = Actual output = 36 units/day = 72% Design capacity 50 units/day Designing Measuring Capacity Effective capacity-affected by periodic maintenance, lunch break, problem in scheduling and operation, imbalance line etc Actual capacity affected by breakdown, absenteeism, shortage and poor quality of raw material etc
EO M. AsadEMBA-2 Capacity Panning Concept Economies of Scale : as a plant gets larger and volume increases the average cost per unit of output drops. Reasons for economies of scale are: –Reducing the fix cost per unit –Construction costs increases at a decreasing rate –Processing costs decrease as output rate increases because operations become more standard. Diseconomies of Scale : when higher level of output cost more per unit to produce. Reasons for diseconomies of scale are: –Distribution costs increases due to traffic congestion and shipping from one large facility to several smaller ones. –Complexity increases costs, command and communication become more problem. –Inflexibility can be issue –Increased bureaucracy, slowing decision making and late approval
EO M. AsadEMBA-2 Capacity Panning Concept The Experience Curve - As plants produce more products, they gain experience in the best production methods and reduce their costs per unit Capacity Focus - The concept of the focused factory holds that production facilities work best when they focus on a fairly limited set of production objectives. –Plants Within Plants (PWP) extend focus concept to find best operating level Capacity Flexibility – Ability to increase or decrease production levels, or to shift production capacity from one product or service to another. –Flexible plants, Flexible process, Flexible workers
EO M. AsadEMBA-2 Determining Capacity Requirements 1. Forecast sales within each individual product line 2. Calculate equipment and labor requirements to meet the forecasts 3. Project equipment and labor availability over the planning horizon Capacity Cushion – is an amount of capacity in excess of expected demand. This may be positive or negative. –Positive Capacity Cushion - when a firms design capacity is more than capacity required to meet its demand –Negative Capacity Cushion - when a firms design capacity is less than capacity required to meet its demand
EO M. AsadEMBA-2 Example of Capacity Requirements A manufacturer produces two lines of mustard, FancyFine and Generic line. Each is sold in small and family-size plastic bottles. The following table shows forecast demand for the next four years.
EO M. AsadEMBA-2 Example of Capacity Requirements (Continued) : Equipment and Labor Requirements Three 100,000 units-per-year machines are available for small-bottle production. Two operators required per machine. Two 120,000 units-per-year machines are available for family-sized-bottle production. Three operators required per machine.
EO M. AsadEMBA-2 Example of a Decision Tree Problem A glass factory specializing in crystal is experiencing a substantial backlog, and the firm's management is considering three courses of action: A) Arrange for subcontracting B) Construct new facilities C) Do nothing (no change) The correct choice depends largely upon demand, which may be low, medium, or high. By consensus, management estimates the respective demand probabilities as 0.1, 0.5, and 0.4. A glass factory specializing in crystal is experiencing a substantial backlog, and the firm's management is considering three courses of action: A) Arrange for subcontracting B) Construct new facilities C) Do nothing (no change) The correct choice depends largely upon demand, which may be low, medium, or high. By consensus, management estimates the respective demand probabilities as 0.1, 0.5, and 0.4.
EO M. AsadEMBA-2 Example of a Decision Tree Problem (Continued): The Payoff Table The management also estimates the profits when choosing from the three alternatives (A, B, and C) under the differing probable levels of demand. These profits, in thousands of Taka are presented in the table below:
EO M. AsadEMBA-2 Example of a Decision Tree Problem (Continued): Step 1. We start by drawing the three decisions A B C
EO M. AsadEMBA-2 Example of Decision Tree Problem (Continued): Step 2. Add our possible states of nature, probabilities, and payoffs A B C High demand (0.4) Medium demand (0.5) Low demand (0.1) Tk 90 Tk 50 Tk 10 High demand (0.4) Medium demand (0.5) Low demand (0.1) Tk 200 Tk 25 - Tk 120 High demand (0.4) Medium demand (0.5) Low demand (0.1) Tk 60 Tk 40 Tk 20
EO M. AsadEMBA-2 Example of Decision Tree Problem (Continued): Step 3. Determine the expected value of each decision High demand (0.4) Medium demand (0.5) Low demand (0.1) A A $90 $50 $10 EV A =0.4(90)+0.5(50)+0.1(10)=$62 $62
EO M. AsadEMBA-2 Example of Decision Tree Problem Step 4. Make decision High demand (0.4) Medium demand (0.5) Low demand (0.1) High demand (0.4) Medium demand (0.5) Low demand (0.1) A B C High demand (0.4) Medium demand (0.5) Low demand (0.1) $90 $50 $10 $200 $25 -$120 $60 $40 $20 Tk 62 $80.5 Tk 46 Alternative B generates the greatest expected profit, so our choice is B or to construct a new facility Tk 82
EO M. AsadEMBA-2 Planning Service Capacity vs. Manufacturing Capacity Time: Goods can not be stored for later use and capacity must be available to provide a service when it is needed Location: Service goods must be at the customer demand point and capacity must be located near the customer Volatility of Demand: Much greater than in manufacturing Capacity Utilization & Service Quality Best operating point is near 70% of capacity From 70% to 100% of service capacity, what do you think happens to service quality?
EO M. AsadEMBA-2 Facility Location
EO M. AsadEMBA-2 Facility Location Competitive Imperatives Impacting Location Issues in Facility Location General Issues Proximity to Customers Business Climate Total Costs Infrastructure Quality of Labor Suppliers Other Facilities Global Issues Free Trade Zones Political Risk Government Barriers Trading Blocs Environmental Regulation Host Community Competitive Advantage
EO M. AsadEMBA-2 Location Decision Factors Macro Analysis Regional / Sub Regional Factors Location of Market Raw materials Labor factors Climate and taxes Foreign Govt Community Considerations Access to market Material costs Labor cost and availability Community services, attitude Taxes Environmental regulations Infrastructure support
EO M. AsadEMBA-2 Location Decision Factors Micro Analysis - Site Related Factors Land Transportation Environmental Legal bindings and tax
EO M. AsadEMBA-2 Plant Location Methodology Factor Rating -Decision based on quantitative and qualitative inputs. Problems: – Do not account for wide range of cost associated with each factor. – May be provided with few points but potentially show a real difference in the value of locations. Solution: Factor rating based on weighted scale Centroid / Center of Gravity Method-Decision based on minimum distribution costs Transportation Model -Decision based on movement costs of raw material or finished goods
EO M. AsadEMBA-2 Plant Location Methodology: Factor Rating Method Two refineries sites (A and B) are assigned the following range of point values and respective points, where the more points the better for the site location. Major factors for site locationPt. Range Sites A B Total pts
EO M. AsadEMBA-2 Plant Location Methodology: Center of Gravity Method The center of gravity method is used for locating single facilities that considers existing facilities, the distances between them, and the volumes of goods to be shipped between them. Formulas used are: C x = X coordinate of center of gravity C y = X coordinate of center of gravity d ix = X coordinate of the ith location d iy = Y coordinate of the ith location V i = volume of goods moved to or from ith location
EO M. AsadEMBA-2 Plant Location Methodology: Example of Center of Gravity Method Question: What is the best location for a new Z-Mobile warehouse/temporary storage facility considering only distances and quantities sold per month? Center of gravity method example –Several automobile showrooms are located according to the following grid which represents coordinate locations for each showroom. X Y A (100,200) D (250,580) Q (790,900) (0,0)
EO M. AsadEMBA-2 Example of Center of Gravity Method: Determining Existing Facility Coordinates X Y A (100,200) D (250,580) Q (790,900) (0,0) To begin, you must identify the existing facilities on a two- dimensional plane or grid and determine their coordinates. You must also have the volume information on the business activity at the existing facilities.
EO M. AsadEMBA-2 Example of Center of Gravity Method: Determining the Coordinates of the New Facility X Y A (100,200) D (250,580) Q (790,900) (0,0) You then compute the new coordinates using the formulas: Z New location