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  • Optimum Introduction to Operations Management

    Team Optumiz

  • Optimum 1

    Table of Contents

    1. Operations Management ........................................................................... 2

    2. Forecasting .................................................................................................... 5

    3. Product and Service Design ..................................................................... 8

    4. Capacity Planning .................................................................................... 10

    5. Process Selection ..................................................................................... 12

    6. Facility Layout ........................................................................................... 15

    7. Quality Management ............................................................................... 17

    8. Supply Chain Management .................................................................... 19

    9. Inventory Management .......................................................................... 22

    10. Lean Operation ....................................................................................... 25

    11. Theory of Constraints ........................................................................... 27

    12. Project Management ............................................................................. 28

    13. Logistics Management .31

    14. MRP and ERP ........................................................................................... 34

  • Optimum 2

    1. Operations Management

    Why Operations Management?

    Every aspect of business revolves around operations. There is a significant amount

    of interaction and collaboration amongst the functional areas of finance, operations and

    marketing. Operations Management enables us to solve complex business problems

    related to the journey of products and services from the manufacturer or provider to the

    end customer. Help us gain an understanding of the techniques required for managing

    and improving the integration of design, resources, processes and customer

    requirements.

    Operations Management can be defined as the management of systems or

    processes that create goods and provide services. The purpose of the operations function

    is to add value during the transformation process.

    Goods are physical items that include raw materials, parts, subassemblies, and final

    products e.g. Automobile, Computer, Oven, Shampoo

    Services are activities that provide some combination of time, location, form or

    psychological value e.g. Air travel, Education, Haircut, Legal counsel

    The scope of operations management ranges across the organization. The

    operations function includes many interrelated activities such as:

    Forecasting

    Capacity planning and Scheduling

    Managing inventories

    Assuring quality

    Locate Planning etc.

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    Decision Making

    Most operations decisions involve many alternatives that can have quite different

    impacts on costs or profits. Typical operations decisions include:

    What: What resources are needed, and in what amounts?

    When: When will each resource be needed? When should the work be

    scheduled? When should materials and other supplies be ordered?

    Where: Where will the work be done?

    How: How will the product or service be designed? How will the work be

    done? How will resources be allocated?

    Who: Who will do the work?

    Decision Area What the Decisions Affect

    Product and service design Costs, quality, liability, and environmental issues

    Capacity Cost, structure, flexibility

    Process selection and layout Costs, flexibility, skill level needed, capacity

    Work design Quality of work life, employee safety, productivity

    Location Costs, visibility

    Quality Ability to meet or exceed customer expectations

    Inventory Costs, shortages

    Maintenance Costs, equipment reliability, productivity

    Scheduling Flexibility, efficiency

    Supply chains Costs, quality, agility, shortages, vendor relations

    Projects Costs, new products, services, or operating systems

    The primary function of the operations manager is to guide the system by decision

    making.

    System Design Decisions

    System Operation Decisions

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    Agile operations: A strategic approach for competitive advantage that emphasizes the

    use of flexibility to adapt and prosper in an environment of change. It involves the

    blending of several core competencies:

    Cost

    Quality

    Reliability

    Flexibility

    The Balanced Scorecard Approach: A top-down management system that

    organizations can use to clarify their vision and strategy and transform them into action.

    Develop objectives

    Develop metrics and targets for each objective

    Develop initiatives to achieve objectives

    Identify links among the various perspectives

    Finance

    Customer

    Internal business processes

    Learning and growth

    Productivity: A measure of the effective use of resources, usually expressed as the ratio

    of output to input. Productivity measures are useful for

    Tracking an operating units performance over time

    Judging the performance of an entire industry or country

    = /

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    2. FORECASTING

    Demand Forecasting can be defined as a process to estimate sales and use of

    products so that they can be purchased, stocked or manufactured in advance to meet the

    demand at the right time. The primary goal operations and supply chain management is

    to match supply to demand. A demand forecast is essential for determining how much

    supply will be needed to match demand.

    The forecasting can be broadly classified into the following:

    1. Quantitative method: Quantitative forecasting methods are used when we have the

    past information of the variable which can be quantified and assumed to follow the same

    pattern over the future for example the prediction of quarter sales volume. The demand

    forecasting tools for such analysis are the time series method and the causal method.

    2. Qualitative method: If the historical data is unavailable or is deemed unfit to

    extrapolate, we use qualitative method. For example, phasing out subsidies on LPG can

    raise questions about the validity of past data to use for future LPG sales prediction.

    Forecasting Method

    Quantitative

    Time Series

    Seasonality

    Trend Projection

    Smoothing

    Causal

    Qualitative

  • Optimum 6

    Delphi method, Expert Judgment, Scenario Writing and Intuitive Approaches are the

    popular method used for Qualitative analysis.

    3. Time series method: As discussed above, times series method make prediction based

    on a set of observations on a variable measured at successive points in time and over

    successive periods of time. This historical data forms a time series. A time series has four

    components which are trends, cyclical, seasonal and irregular. Trend component of a time

    series depicts the long term gradual shift to a higher or lower value. The cyclical

    component captures the recurring sequence of points above and below the trend line

    which lasts more than one year. The seasonal component is the regularly repeated

    pattern which can be attributed to seasonal influences. The irregular component

    accounts for the deviations of the actual time series values from those expected given the

    effects of trend, cyclical and seasonal component.

    Based on the above components, following forecasting methods are devised:

    Smoothing Methods: It is used to smooth out the random fluctuations caused by the

    irregular component of the time series. These methods are appropriate for stable time

    series i.e. which does not have a seasonal, trend or a cyclical component. There are three

    ways in which it can be done. First is the moving average method which uses the average

    of the most recent n data values in the time series as forecast for the next period.

    Weighted average method assigns different weightage for each data values and computes

    the weighted average of the most recent n values as the forecast. The weights can be

    assigned based on the accuracy of data for a particular period of time. Exponential

    smoothing uses weighted average of past time values as the forecast. It is a special case

    of weighted average where we assign only one weight to the most recent observation

    and the weights for other observation is automatically calculated(the sum of weights is

    always 1) and become smaller as the observation moves farther into the past.

    Trend Projection: They are used to forecast a time series which have long term linear

    trend which is not stable and hence smoothing methods cannot be applied.

    Trend and Seasonal Components: This forecasts a time series that has both trend and

    seasonal components. It involves removing of the seasonal effect which is done by

    deseasonalizing time series and applying regression analysis on the deseasonalized data

    to estimate trend.

    Causal Method: Causal forecasting methods are based on the assumption that the

    variable we are forecasting has a cause effect relationship with one or more than one

    independent variables. For example, sales volume (dependent variable) for many

    products is influenced by advertising expenditures. For this, regression analysis may be

    used to develop the relation between the dependent and independent variables and we

    can make a forecast by substituting the values of the independent variables in the

    regression equation. Regression analysis in which the independent variables are

    previous values of the time series is referred to as autoregressive models.

  • Optimum 7

    The better forecasts are, the more able organizations will be to take advantage of

    future opportunities and reduce potential risks. A worthwhile strategy is to work to

    improve short-term forecasts

    Accurate up-to-date information can have a significant effect on forecast accuracy:

    o Prices

    o Demand

    o Other important variables

    Reduce the time horizon forecasts have to cover

    Sharing forecasts or demand data through the supply chain can improve forecast

    quality

  • Optimum 8

    3. Product and Service Design

    Effective product and service design can help the organization achieve

    competitive advantage:

    Increasing emphasis on component commonality

    Packaging products and ancillary services to increase sales

    Using multiple-use platforms

    Implementing tactics that will achieve the benefits of high volume while

    satisfying customer needs for variety

    Continually monitoring products and services for small improvement

    opportunities

    Reducing the time it takes to get a new or redesigned product or service to the

    market

    Product Life Stage Strategies

    Introduction

    Weigh trade-offs between eliminating bugs and getting the product or

    service to the market at an advantageous time

    Accurate demand forecasts are important to ensuring adequate capacity

    availability

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    Growth

    Demand forecasts are important to ensuring a continued adequate capacity

    availability

    Design improvements

    Emphasis on improved product or service reliability and lower cost

    Maturity

    Relatively few design changes

    Emphasis is on high productivity and low cost

    Decline

    Continue or discontinue product or service

    Identify alternative uses for product or service

    Continued emphasis on high productivity and low cost

    Phases in Design & Development

    Idea generation

    Feasibility analysis

    Product specifications

    Process specifications

    Prototype development

    Design review

    Market testProduct

    introductionFollow-up evaluation

  • Optimum 10

    4. Capacity Planning

    Capacity planning impacts all areas of the organization

    It determines the conditions under which operations will have to function

    Flexibility allows an organization to be agile

    It reduces the organizations dependence on forecast accuracy and reliability

    Many organizations utilize capacity cushions to achieve flexibility

    Bottleneck management is one way by which organizations can enhance their

    effective capacities

    Capacity expansion strategies are important organizational considerations

    Expand-early strategy

    Wait-and-see strategy

    Capacity contraction is sometimes necessary

    Capacity disposal strategies become important under these conditions

    Capacity decisions

    impact the ability of the organization to meet future demands

    affect operating costs

    are a major determinant of initial cost

    often involve long-term commitment of resources

    can affect competitiveness

    affect the ease of management

    are more important and complex due to globalization

    need to be planned for in advance due to their consumption of financial and

    other resources

    Design capacity: The maximum output rate or service capacity an operation, process, or

    facility is designed for.

    Effective capacity: Design capacity minus allowances such as personal time and

    maintenance.

  • Optimum 11

    =

    =

    Capacity Strategies

    Leading: Build capacity in anticipation of future demand increases

    Following: Build capacity when demand exceeds current capacity

    Tracking: Similar to the following strategy, but adds capacity in relatively small

    increments to keep pace with increasing demand

    Steps in Capacity Planning

    Estimate future capacity requirements

    Evaluate existing capacity and facilities; identify gaps

    Identify alternatives for meeting requirements

    Conduct financial analyses

    Assess key qualitative issues

    Select the best alternative for the long term

    Implement alternative chosen

    Monitor results

  • Optimum 12

    5. Process Selection

    The main issue in designing process layouts concerns the relative placement of the

    departments. A major objective in designing process layouts is to minimize transportation cost,

    distance, or time.

    The five key decisions in process management are:

    I. Process Choice

    II. Vertical Integration

    III. Resource Flexibility

    IV. Customer Involvement

    V. Capital Intensity

    These decisions are critical to the success of any organization and must be based on

    determining the best was to support the competitive priorities of the enterprise.

    Process selection

    It refers to the deciding on the way production of goods or services will be

    organized. It has major implications for

    Capacity planning

    Layout of facilities

    Equipment

    Design of work systems

    Process selection criteria

    Variety

    Volume

    Equipment Flexibility

    Process Choice

    The first choice typically faced in process management is that of process choice.

    Manufacturing and service operations can be characterized as one of the following:

    1. Project: A project process is characterized by a high degree of job customization, the

    large scope of each project, and the release of substantial resources, once a project is

    completed. E.g. building a shopping center, planning a major event, running a political

    campaign

    2. Job Shop: A job shop process creates the flexibility needed to produce a variety of

    products or services in significant quantities. Customization is relatively high and volume

  • Optimum 13

    for any one product or service is low. E.g. custom metal processing shop, hospital

    emergency rooms

    3. Batch Flow: In a batch flow process same or similar products or services are provided

    repeatedly with a narrower range of products or services. Variety is achieved more

    through an assemble-to-order strategy than the job shops make-to-order strategy. A

    third difference is that production lots or customer groups are handled larger quantities

    (or batches) than they are with job shop processes. E.g. scheduling air travel,

    manufacturing garments, furniture manufacturing

    4. Line Flow: A line flow process lies between the batch and continuous processes,

    volumes are high, and products or services are standardized, which allows resources to

    be organized around a product or service. E.g. automobiles, appliances, fast-food

    restaurants.

    5. Continuous Flow: A continuous process is the extreme end of high-volume,

    standardized production with rigid line flows and tightly linked process segments. Its

    name derives from how materials move through the process. E.g. petroleum refineries,

    chemical plants

    Layout is the configuration of departments, work centers, and equipment, with

    particular emphasis on movement of work (customers or materials) through the system

    Facilities layout decisions arise when:

    Designing new facilities

    Re-designing existing facilities

    Basic Layout Types

    Product layouts: Product layouts arrange activities in a line according to the

    sequence of operations that need to be performed to assemble a particular

    product

    Process layouts: Process layout that groups similar activities together in

    departments of work centers according to the process or function that they

    perform characteristic of operations that serve different customers different

    needs

    Fixed-Position layout: Fixed-Position layouts are layouts are used in projects in

    which the product is too fragile, bulky, or heavy to move. E.g. ships, houses, aircraft

    Combination layouts

    FMS (Flexible Manufacturing System): A group of machines designed to handle

    intermittent processing requirements and produce a variety of similar products

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    CIM (Computer Integrated Manufacturing): A system for linking a broad range of

    manufacturing activities through an integrated computer system

    Line balancing: The process of assigning tasks to workstations in such a way that the

    workstations have approximately equal time requirements.

    Why is line balancing important?

    It allows us to use labor and equipment more efficiently.

    To avoid fairness issues that arise when one workstation must work harder

    than another.

    Scheduling:

    It establishes the timing of the use of equipment, facilities and human activities in

    an organization.

    Sequencing

    Determine the order in which jobs at a work center will be processed

    Priority rules for sequencing

    Simple heuristics used to select the order in which jobs will be processed

    FCFS - first come, first served

    SPT - shortest processing time

    EDD - earliest due date

    CR - critical ratio

    S/O - slack per operation

    Rush emergency

    Queuing theory - Mathematical approach to the analysis of waiting lines

    Littles Law

    For a stable system the average number of customers in line or in the system is equal to

    the average customers arrival rate multiplied by the average time in the line or system

    Options for reducing wait times:

    Work to increase processing rates, instead of increasing the number of servers

    Use new processing equipment and/or methods

    Reduce processing time variability through standardization

    Shift demand

  • Optimum 15

    6. Facility Layout

    Location decisions arise for a variety of reasons:

    Addition of new facilities

    1. As part of a marketing strategy to expand markets

    2. Growth in demand that cannot be satisfied by expanding existing facilities

    Location decisions are based on:

    Profit potential or cost and customer service

    Finding a number of acceptable locations from which to choose

    Position in the supply chain

    Web-based retail organizations are effectively location independent

    Supply chain management issues such as supply chain configuration

    Service and Retail Location Considerations:

    Nearness to raw materials is not usually a consideration

    Customer access is a

    Prime consideration for some: restaurants, hotels, etc.

    Not an important consideration for others: service call centers, etc.

    Tend to be profit or revenue driven, and so are

    Concerned with demographics, competition, traffic/volume

    patterns, and convenience

    Evaluating Location Alternatives

    Locational cost-volume-profit analysis: Technique for evaluating location choices in

    economic terms. The steps involved in this analysis are:

    Determine the fixed and variable costs for each alternative

    Plot the total-cost lines for all alternatives on the same graph

    Determine the location that will have the lowest total cost (or highest profit)

    for the expected level of output

    Factor rating analysis: General approach to evaluating locations that includes

    quantitative and qualitative inputs. The procedure for the analysis is as follows:

    Determine which factors are relevant

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    Assign a weight to each factor that indicates its relative importance compared

    with all other factors.

    Decide on a common scale for all factors

    Score each location alternative

    Calculate weighted factor sum for each alternative

    Choose the alternative that has the highest composite score

    Center of gravity method: Method for locating a distribution center that minimizes

    distribution costs

    Treats distribution costs as a linear function of the distance and the quantity

    shipped

    The quantity to be shipped to each destination is assumed to be fixed

    The method includes the use of a map that shows the locations of destinations

    The map must be accurate and drawn to scale

    A coordinate system is overlaid on the map to determine relative locations

    Transportation model: It involves finding the lowest-cost plan for distributing stocks of

    goods or supplies from multiple origins to multiple destinations that demand the goods.

  • Optimum 17

    7. Quality Management

    Quality is a strategic imperative for organizations where customers are very

    concerned with the quality of goods and services they receive. It is a never-ending journey

    where most organizational members understand and buy into this idea.

    Customer satisfaction customer loyalty

    Quality needs to be incorporated throughout the entire supply chain, not just the

    organization itself. Quality is the ability of a product or service to consistently meet or

    exceed customer expectations

    Determinants of Quality

    Design

    Conformance to Design

    Ease of Use

    After-Sale Service

    Costs of Quality

    Failure Costs: Costs incurred by defective parts/products or faulty services.

    Appraisal Costs: Costs of activities designed to ensure quality or uncover defects

    Prevention Costs: All TQ training, TQ planning, customer assessment, process

    control, and quality improvement costs to prevent defects from occurring

    Total Quality Management

    A philosophy that involves everyone in an organization in a continual effort to

    improve quality and achieve customer satisfaction.

    Six Sigma

    A business process for improving quality, reducing costs, and increasing customer

    satisfaction

    Statistically

    Having no more than 3.4 defects per million

    Conceptually

    Program designed to reduce defects

    Requires the use of certain tools and techniques

    Seven basic quality tools:

  • Optimum 18

    Flowcharts

    Checksheets

    Histograms

    Pareto Analysis

    Scatter Diagrams

    Control Charts

    Cause-and-Effect Diagrams

    Process Capability

    Once a process has been determined to be stable, it is necessary to determine if

    the process is capable of producing output that is within an acceptable range

    Tolerances or specifications

    Range of acceptable values established by engineering design or

    customer requirements

    Process variability

    Natural or inherent variability in a process

    Process capability

    Process variability relative to specification

    limit ification)rance(speclower toleLTL limit tion)(specifica ranceupper tole UTL

    where6

    LTL - UTL

    =

    =

    =

    pC

    Control Chart

  • Optimum 19

    8. Supply Chain Management

    Supply Chain

    It is the sequence of organizations - their facilities, functions, and activities - that

    are involved in producing and delivering a product or service. It is also referred to as

    value chains.

    Supply Chain Management (SCM)

    The strategic coordination of business functions within a business organization and

    throughout its supply chain for the purpose of integrating supply and demand

    management

    Effective supply chains are necessary for organizational success

    Requires integration of all aspects of the chain

    Supplier relationships are a critical component of supply chain strategy

    Lean operations and six sigma are being employed to improve supply chain

    success

    The goal of SCM is to match supply to demand as effectively and efficiently as possible

  • Optimum 20

    Key issues:

    Determining appropriate levels of outsourcing

    Managing procurement

    Managing suppliers

    Managing customer relationships

    Being able to quickly identify problems and respond to them

    Managing risk

    Trends affecting supply chain design and management:

    Re-evaluation of outsourcing

    Risk management

    Inventory management

    Lean supply chains

    Sustainability

    The purchasing department is responsible for obtaining the materials, parts, and

    supplies and services needed to produce a product or provide a service. The goal of

    procurement

    Develop and implement purchasing plans for products and services that support

    operations strategies

    Supply Chain Performance Metrics

    Financial

    Return on assets

    Cost

    Cash flow

    Profits

    Suppliers

    Quality

    On-time delivery

    Cooperation

    Flexibility

  • Optimum 21

    Operations

    Productivity

    Quality

    Inventory

    Average value

    Turnover

    Weeks of supply

    Order fulfillment

    Order accuracy

    Time to fill orders

    % of incomplete orders shipped

    % of orders delivered on time

    Customers

    Customer satisfaction

    % of customer complaints

    The Bullwhip Effect

    The bullwhip effect can be explained as an occurrence detected by the supply

    chain where orders sent to the manufacturer and supplier create larger variance then the

    sales to the end customer. These irregular orders in the lower part of the supply chain

    develop to be more distinct higher up in the supply chain. This variance can interrupt the

    smoothness of the supply chain process as each link in the supply chain will over or

    underestimate the product demand resulting in exaggerated fluctuations.

  • Optimum 22

    9. Inventory Management

    Inventory refers to goods and materials that a business holds.

    Why is inventory required?

    Maintaining inventory is important to keep service time and lead time in check.

    Differences in lead times of individual machines and fluctuations in demand, supply and

    movements of goods necessitates maintain buffer inventory. At the same time placing

    orders in bulk has economies of scale from both ordering and logistical aspects.

    Problems with inventory:

    Maintaining inventory involves holding costs like warehouse costs, store keeping

    costs, cost due to damaged, deteriorated and obsolete goods.

    Inventory management:

    Inventory management is basically about what to keep, where to keep and how

    much to keep. It involves determining the optimum level of inventory by comparing the

    costs of too less with the cost of excessive inventory. Inventory may exist at various stages

    of the supply chain- warehouse, in-process, dealer, distributor and retailer. Inefficient

    inventory management ties-up cash and leads to supply chain inefficiency.

    Although its sounds very simple, Inventory management can make or break

    companies. Increasing size, global suppliers, geographically spread stores, warehouses

    and factories have forced some of the worlds biggest and the best companies to focus all

    their might towards inventory management. This is simply because managing inventory

    can help them improve their bottom-line, improve customer response time by reducing

    lead times and maintain quality levels.

    Improving inventory processes can offer significant cost reduction and customer

    satisfaction benefits

    Types of inventory:

    Raw material inventory

    Work-in-process inventory

    Finished goods inventory.

    Just-In-Time (JIT): This is the most important widely used method of managing

    inventory. In this system, companies plan to receive items as they are needed rather than

    maintaining high inventory levels, and materials requirement planning, which schedules

    material deliveries based on sales forecasts.

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    Inventory Costs

    Holding (carrying) costs

    Cost to carry an item in inventory for a length of time, usually a year

    Ordering costs

    Costs of ordering and receiving inventory

    Shortage costs

    Costs resulting when demand exceeds the supply of inventory; often

    unrealized profit per unit

    Basic EOQ Model (Economic Order Quantity)

    used to find a fixed order quantity that will minimize total annual inventory costs

    Economic Production Quantity (EPQ)

    Economic production quantity (EPQ) is the quantity of a product that should be

    manufactured in a single batch so as to minimize the total cost that includes setup costs

    for the machines and inventory holding costs.

    Reorder point

    When the quantity on hand of an item drops to this amount, the item is

    reordered.

    Determinants of the reorder point

    1. The rate of demand

    2. The lead time

    3. The extent of demand and/or lead time variability

    4. The degree of stockout risk acceptable to management

    ROP = d x LT

    Where d = demand rate

    LT = Lead Time

    cost holdingunit per annualcost)der demand)(or annual(22*

    ==

    HDSQ

  • Optimum 24

    Safety stock

    Stock that is held in excess of expected demand due to variable demand and/or lead

    time. The amount of safety stock that is appropriate for a given situation depends upon:

    The average demand rate and average lead time

    Demand and lead time variability

    The desired service level

    Methods of inventory analysis:

    Pareto analysis

    VED analysis

    ABC analysis

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    10. Lean Operation

    Lean operation: A flexible system of operation that uses considerably less resources

    than a traditional system. They tend to achieve:

    Greater productivity

    Lower costs

    Shorter cycle times

    Higher quality

    Muda

    Waste and inefficiency

    Kanban

    A manual system that signals the need for parts or materials

    Pull system

    Replacing material or parts based on demand

    Heijunka

    Workload leveling

    Kaizen

    Continuous improvement of the system

    Jidoka

    Quality at the source (worker)

    Poka-yoke

    Safeguards built into a process to reduce the possibility of errors

    Team concept

    Use of small teams of workers for process improvement

    The degree to which leans ultimate goal is achieved depends upon how well its

    supporting goals are achieved:

    Eliminate disruptions

    Make the system flexible

    Eliminate waste, especially excess inventory

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    Value stream mapping

    A visual tool to systematically examine the flows of materials and information

    Its purpose is to help identify waste and opportunities for

    improvement

    Factor Traditional Lean

    Inventory Much to offset forecast

    errors, late deliveries

    Minimal necessary to operate

    Deliveries Few, large Many, small

    Lot sizes Large Small

    Setup; runs Few, long runs Many, short runs

    Vendors Long-term relationships are

    unusual

    Partners

    Workers Necessary to do the work Assets

    The 7 Types of Waste (muda)

    1. Defects

    2. Overproduction of things not demanded by actual customers

    3. Inventories awaiting further processing or consumption

    4. Unnecessary over-processing (for example, relying on inspections rather than

    designing the process to eliminate problems)

    5. Unnecessary motion of employees

    6. Unnecessary transport and handling of goods

    7. Waiting for an upstream process to deliver, or for a machine to finish

    processing, or for a supporting function to be completed, or for an interrupted

    worker to get back to work...

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    11. Theory of Constraints

    The purpose of Theory of Constraints (TOC) is for an organization to be an ever

    flourishing company which aims at continuously increasing its value for all its stakeholders

    (employees, clients and shareholders) now and in the future by capitalizing on a decisive

    competitive edge in the market. For this, TOC principle follows the strategy of Build,

    Capitalize and sustain the decisive competitive edge (DCE) in such a manner that it

    satisfies the significant needs of significant customers which no other significant

    competitor can match. The DCEs that the market demands are: Quality, Price,

    Reliability and Responsiveness. TOC focuses on building a strong DCE on reliability and

    responsiveness.

    TOC states that a supply chain is no stronger than its weakest link. TOC tries to identify

    the weakest link to thereby improve upon productivity of the entire supply chain. The

    Five focusing steps of Theory of Constraints are:

    1. Identify the system's constraint (The bottleneck the set of operation/s which

    gives the least amount of output). This is recognized as the drum which run the

    entire operations.

    2. Exploit the system's constraint (Create Buffer before the Constraint to ensure

    maximum exploitation of the system constraint).

    3. Subordinate other processes to the above decision (A rope which ties all the

    operations activity to the above decision).

    4. Elevate the system's constraint (make necessary changes required to improve the

    capacity of the constraint).

    5. If in the previous steps, a constraint has been broken go back to step 1.

    The Theory of constraints can thus be reduced into three steps i.e. Drum-Buffer-Rope

    (DBR). This process is used to improve the throughput of the entire system thereby

    helping the organization build upon a DCE of higher responsiveness and reliability. The

    theory was introduced by Eliyahu M. Goldratt.

    He later went to construct a Simplified-Drum-Buffer-Rope which resolved the problem of

    shifting constraints (as we went through the process of Five Focussing Steps we realize

    that the bottleneck has shifted in the supply chain link creating a problem of shifting

    contraints/bottlenecks). This move stated that instead of identifying a constraint we can

    fix the constraint The Market demand.

    The process of capitalizing and sustaining the decisive competitive edge is done through

    a process called POOGI (Process of on-going improvement). This is done in such a fashion

    that no significant competitor can match the DCE that the organization has built on.

  • Optimum 28

    12. Project Management

    Project management is the discipline of planning, organizing and managing

    resources to bring about the successful completion of specific project goals and

    objectives.

    Objectives of Project Management

    Make strategic business decisions

    Control the minute detail that is necessary to finish projects

    Understand current resource demands, set priorities, and evaluate long-term

    staffing requirements

    Use skilled resources effectively

    Reorganize projects

    Process of project management is guided by three key principles:

    Planning

    Controlling

    Managing

    Planning a project

    The first step in project management is to define your project.

    1. What is the scope of the work? What activities will make up the project and what

    is their relationship to each other? Youll also want to identify the major

    milestones that will help you monitor the projects progress.

    2. What is the project duration? What are the dates when the project will begin and

    end?

    3. What resources are available to the project? Beyond labor, think about all the

    types of resources you will require.

    4. Who will perform what tasks? Determining your labor resources and their

    available work hours is a key part of building a successful project. Youll need to

    plan for downtime and holidays and determine the regular workweek for various

    staffing types.

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    5. How much will the project cost? What are the costs per resource? Are there any

    hidden project costs?

    6. What is the estimated budget? Establishing a project budget estimate in advance

    helps you monitor possible cost overruns.

    The answers to these questions form the framework of your project.

    Controlling a project

    Once you have built your project and estimated your budgeting needs, you save

    this original plan as a baseline, or target schedule, to help you control the project. A

    baseline provides a solid point of reference as your schedule changes over time. It allows

    you to compare the original schedule to the current one and identify significant changes

    and develop contingency plans.

    You control a project to keep it heading in the right direction. Youll want to track

    work progress and costs, compare them to your baseline, and then recommend what

    actions should be taken.

    Effective project control reaps many benefits. It allows you to keep a close eye on

    possible problems before they become critical. It lets the project team and senior

    management view cost and scheduling timeframes based on the reality of the schedule.

    Managing a project

    The process of guiding a project from start to finish is the responsibility of a

    project manager. A good project manager wears many hats, acting at various times as a

    motivator, communicator, coordinator, and advisor. As you control the projects progress,

    it is your job to keep your team aware of changes to the schedule and possible

    consequences. In many ways, you are the projects ambassador, ensuring that your

    project organization is carrying out its responsibilities for the best possible outcome.

    To be an effective project manager also requires consistency when you update

    your projects. Select a day each week, or biweekly, when you will regularly update

    projects. This regular update will include progress on values such as

    Dates on which activities started or finished

    Dates when resources are consumed

    Changes to resource rates

    Determine a standard policy for the update and scheduling procedure, and for

    reporting progress.

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    PERT (program evaluation and review technique) and CPM (critical path method) are

    two techniques used to manage large-scale projects

    Risks are an inherent part of project management

    Risks relate to occurrence of events that have undesirable consequences such

    as

    Delays

    Increased costs

    Inability to meet technical specifications

    Good risk management involves

    Identifying as many risks as possible

    Analyzing and assessing those risks

    Working to minimize the probability of their occurrence

    Establishing contingency plans and budgets for dealing with any that do

    occur

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    13. Logistics Management

    Logistics is complementary to Supply Chain. While Supply Chain management deals with

    the flow of various materials/information/money from one partner to other, logistics is

    the medium for facilitating this transfer.

    Logistics Management can hence be defined as the task of coordinating material flow and

    information flow across the supply chain.

    Logistics were initially employed by one of the authors of military theory, Baron Antoine

    Henri Jomini (1779-1869), a French general. According to him, Logistics was a theory of

    movement, provisioning and accommodation of armies. After World War II, logistic

    activities were extended for the solution of analogical problems in civilian use which

    paved the way for the beginning of Business Logistics.

    The institute of Logistics defines Logistics as ensuring the availability of

    the right product,

    in the right quantity and

    right condition,

    at the right place,

    at the right time,

    for the right customer,

    at the right costs.

    The objective of Logistics Strategy are minimize cost, minimize investment and maximize

    customer service

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    Commonly used terms:

    Total Logistics Cost: Expenses associated with transportation, materials handling and

    warehousing, inventory, stockouts, order processing, and return goods handling.

    Cross-docking: Practice of unloading products from suppliers, sorting products for

    individual stores, and quickly reloading products onto trucks for a particular store.

    3PL/Third-Party Logistics Providers: Firms that perform most or all of the logistics

    functions that manufacturers, suppliers, and distributors would normally perform

    themselves.

    Reverse Logistics: A process of reclaiming recyclable and reusable materials, returns,

    and reworks from the point of consumption or sue for repair, remanufacturing,

    redistribution, or disposal.

    Intermodal Transportation: Combining different transportation modes to get the best

    features from each.

    Freight Forwarders: Firms that accumulate small shipments into larger lots and then

    hire a carrier to move them, usually at reduced rates.

    Vendor-Managed Inventory: An inventory management system whereby the supplier

    determines the product amount and assortment a customer (such as a retailer) needs and

    automatically delivers the appropriate items.

    Lead Time: Lag from ordering an item until it is received and ready for use or sale. Also

    called order cycle time or replenishment time.

    Intermodal Transportation: Combining different transportation modes to get the best

    features from each.

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    The Incoterms rules or International Commercial Terms are a series of pre-defined

    commercial terms published by the International Chamber of Commerce (ICC) that are

    widely used in International commercial transactions or procurement processes.

    INCOTERMS Acronyms:

    CFR - Cost and freight

    CIF - Cost, insurance and freight

    CIP - Carriage and insurance paid to

    CPT - Carriage paid to

    DAF - Delivered at frontier

    DDP - Delivered duty paid

    DDU - Delivered duty unpaid

    DEQ - Delivery ex quay

    DES - Delivery ex ship

    EXW - Ex works

    FAS - Free alongside ship

    FCA - Free carrier

    FOB - Free on board

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    14. MRP and ERP

    Material Resource Planning (MRP): It is an approach to inventory planning,

    manufacturing scheduling, supplier scheduling, and overall corporate planning. The

    material requirements planning (MRP) system provides the user with information about

    timing (when to order) and quantity (how much to order), generates new orders, and

    reschedules existing orders as necessary to meet the changing requirements of

    customers and manufacturing.

    MRP Inputs

    Master schedule: It states which end items are to be produced, when these are

    needed, and in what quantities. It should cover a period that is at least equivalent

    to the cumulative lead time

    Bill of Materials (BOM): A listing of all of the raw materials, parts, subassemblies,

    and assemblies needed to produce one unit of a product

    Inventory records: Includes information on the status of each item by time

    period, called time buckets. Information about

    Gross requirements

    Scheduled receipts

    Expected amount on hand

    Cumulative lead time

    The sum of the lead times that sequential phases of a process require, from ordering of

    parts or raw materials to completion of final assembly.

    MRP processing takes the end item requirements specified by the master schedule and

    explodes them into time-phased requirements for assemblies, parts, and raw materials

    Lot sizing

    Choosing a lot size for ordering or production

    Common lot sizing rules:

    Lot-for-Lot (L4L) ordering

    Economic Order Quantity (EOQ)

    Fixed Period Ordering

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    Enterprise resource planning (ERP)

    ERP was the next step in an evolution that began with MRP and evolved

    into MRPII

    Represents an expanded effort to integration financial, manufacturing, and

    human resources on a single computer system

    ERP systems are composed of a collection of integrated modules

    ERP strategic implications

    High initial cost

    High cost to maintain

    Need for future upgrades

    Intensive training required

    ERP as a strategic planning tool

    Can improve supply chain management

    Stronger links between their customers and their supplier

    Makes the organization more capable of satisfying changing customer

    requirements

    Offers opportunities for continuous improvement