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Operations Management

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Presentation on theme: "Operations Management"— Presentation transcript:

1 Operations Management
Chapter 12 – Layout Strategies PowerPoint presentation to accompany Heizer/Render Principles of Operations Management, 7e Operations Management, 9e

2 Learning Objectives When you complete this chapter you should be able to: Discuss important issues in office layout Define the objectives of retail layout Discuss modern warehouse management and terms such as ASRS, cross-docking, and random stocking Identify when fixed-position layouts are appropriate

3 Learning Objectives When you complete this chapter, you should be able to: Explain how to achieve a good process-oriented facility layout Define work cell and the requirements of a work cell Define product-oriented layout Explain how to balance production flow in a repetitive or product-oriented facility

4 Innovations at McDonald’s
Indoor seating (1950s) Drive-through window (1970s) Adding breakfast to the menu (1980s) Adding play areas (late 1980s) Redesign of the kitchens (1990s) Self-service kiosk (2004) Now three separate dining sections

5 Strategic Importance of Layout Decisions
The objective of layout strategy is to develop a cost-effective layout that will meet a firm’s competitive needs

6 Layout Design Considerations
Higher utilization of space, equipment, and people Improved flow of information, materials, or people Improved employee morale and safer working conditions Improved customer/client interaction Flexibility

7 Types of Layout Office layout: Positions workers, their equipment, and spaces/offices to provide for movement of information Retail layout: Allocates shelf space and responds to customer behavior Warehouse layout: Addresses trade-offs between space and material handling

8 Types of Layout Fixed-position layout: Addresses the layout requirements of large, bulky projects such as ships and buildings Process-oriented layout: Deals with low-volume, high-variety production (also called job shop or intermittent production)

9 Types of Layout Work cell layout: Arranges machinery and equipment to focus on production of a single product or group of related products Product-oriented layout: Seeks the best personnel and machine utilizations in repetitive or continuous production

10 Good Layouts Consider Material handling equipment
Capacity and space requirements Environment and aesthetics Flows of information Cost of moving between various work areas

11 Office Layout Grouping of workers, their equipment, and spaces to provide comfort, safety, and movement of information Movement of information is main distinction Typically in state of flux due to frequent technological changes

12 Supermarket Retail Layout
Objective is to maximize profitability per square foot of floor space Sales and profitability vary directly with customer exposure

13 Five Helpful Ideas for Supermarket Layout
Locate high-draw items around the periphery of the store Use prominent locations for high-impulse and high-margin items Distribute power items to both sides of an aisle and disperse them to increase viewing of other items Use end-aisle locations Convey mission of store through careful positioning of lead-off department

14 Retail Slotting Manufacturers pay fees to retailers to get the retailers to display (slot) their product Contributing factors Limited shelf space An increasing number of new products Better information about sales through POS data collection Closer control of inventory

15 Servicescapes Ambient conditions - background characteristics such as lighting, sound, smell, and temperature Spatial layout and functionality - which involve customer circulation path planning, aisle characteristics, and product grouping Signs, symbols, and artifacts - characteristics of building design that carry social significance

16 Warehousing and Storage Layouts
Objective is to optimize trade-offs between handling costs and costs associated with warehouse space Maximize the total “cube” of the warehouse – utilize its full volume while maintaining low material handling costs

17 Warehousing and Storage Layouts
Warehouse density tends to vary inversely with the number of different items stored Automated Storage and Retrieval Systems (ASRSs) can significantly improve warehouse productivity by an estimated 500% Dock location is a key design element

18 Cross-Docking Materials are moved directly from receiving to shipping and are not placed in storage in the warehouse Requires tight scheduling and accurate shipments, bar code or RFID identification used for advanced shipment notification as materials are unloaded

19 Random Stocking Typically requires automatic identification systems (AISs) and effective information systems Random assignment of stocking locations allows more efficient use of space Key tasks Maintain list of open locations Maintain accurate records Sequence items to minimize travel, pick time Combine picking orders Assign classes of items to particular areas

20 Customizing Value-added activities performed at the warehouse
Enable low cost and rapid response strategies Assembly of components Loading software Repairs Customized labeling and packaging

21 Fixed-Position Layout
Product remains in one place Workers and equipment come to site Complicating factors Limited space at site Different materials required at different stages of the project Volume of materials needed is dynamic

22 Alternative Strategy As much of the project as possible is completed off-site in a product-oriented facility This can significantly improve efficiency but is only possible when multiple similar units need to be created

23 Process-Oriented Layout
Like machines and equipment are grouped together Flexible and capable of handling a wide variety of products or services Scheduling can be difficult and setup, material handling, and labor costs can be high

24 Computer Software Three dimensional visualization software allows managers to view possible layouts and assess process, material handling, efficiency, and safety issues

25 Work Cells Reorganizes people and machines into groups to focus on single products or product groups Group technology identifies products that have similar characteristics for particular cells Volume must justify cells Cells can be reconfigured as designs or volume changes

26 Advantages of Work Cells
Reduced work-in-process inventory Less floor space required Reduced raw material and finished goods inventory Reduced direct labor Heightened sense of employee participation Increased use of equipment and machinery Reduced investment in machinery and equipment

27 Requirements of Work Cells
Identification of families of products A high level of training, flexibility and empowerment of employees Being self-contained, with its own equipment and resources Test (poka-yoke) at each station in the cell

28 Repetitive and Product-Oriented Layout
Organized around products or families of similar high-volume, low-variety products Volume is adequate for high equipment utilization Product demand is stable enough to justify high investment in specialized equipment Product is standardized or approaching a phase of life cycle that justifies investment Supplies of raw materials and components are adequate and of uniform quality

29 Product-Oriented Layouts
Fabrication line Builds components on a series of machines Machine-paced Require mechanical or engineering changes to balance Assembly line Puts fabricated parts together at a series of workstations Paced by work tasks Balanced by moving tasks Both types of lines must be balanced so that the time to perform the work at each station is the same

30 Product-Oriented Layouts
Low variable cost per unit Low material handling costs Reduced work-in-process inventories Easier training and supervision Rapid throughput Advantages High volume is required Work stoppage at any point ties up the whole operation Lack of flexibility in product or production rates Disadvantages

31 Assembly-Line Balancing
Objective is to minimize the imbalance between machines or personnel while meeting required output Starts with the precedence relationships Determine cycle time Calculate theoretical minimum number of workstations Balance the line by assigning specific tasks to workstations

32 Operations Management
Chapter 10 – Human Resources and Job Design PowerPoint presentation to accompany Heizer/Render Principles of Operations Management, 7e Operations Management, 9e

33 Learning Objectives When you complete this chapter you should be able to: Describe labor planning policies Identify the major issues in job design Identify major ergonomic and work environment issues Use the tools of methods analysis Understand the contribution of the visual workplace

34 Human Resource Strategy
The objective of a human resource strategy is to manage labor and design jobs so people are effectively and efficiently utilized People should be effectively utilized within the constraints of other operations management decisions People should have a reasonable quality of work life in an atmosphere of mutual commitment and trust

35 Constraints on Human Resource Strategy
Product strategy Skills needed Talents needed Materials used Safety What Process strategy Technology Machinery and equipment used Safety Procedure Schedules Time of day Time of year (seasonal) Stability of schedules When Individual differences Strength and fatigue Information processing and response Who HUMAN RESOURCE STRATEGY Location strategy Climate Temperature Noise Light Air quality Where Layout strategy Fixed position Process Assembly line Work cell Product How Figure 10.1

36 Labor Planning Employment Stability Policies Follow demand exactly
Matches direct labor costs to production Incurs costs in hiring and termination, unemployment insurance, and premium wages Labor is treated as a variable cost

37 Labor Planning Employment Stability Policies Hold employment constant
Maintains trained workforce Minimizes hiring, termination, and unemployment costs Employees may be underutilized during slack periods Labor is treated as a fixed cost

38 Work Schedules Standard work schedule Flex-time Flexible work week
Five eight-hour days Flex-time Allows employees, within limits, to determine their own schedules Flexible work week Fewer but longer days Part-time Fewer, possibly irregular, hours

39 Job Design Specifying the tasks that constitute a job for an individual or a group Job specialization Job expansion Psychological components Self-directed teams Motivation and incentive systems

40 Labor Specialization The division of labor into unique tasks
First suggested by Adam Smith in 1776 Development of dexterity and faster learning Less loss of time Development of specialized tools Later Charles Babbage (1832) added another consideration Wages exactly fit the required skill

41 Job Expansion Adding more variety to jobs
Intended to reduce boredom associated with labor specialization Job enlargement Job rotation Job enrichment Employee empowerment

42 Psychological Components of Job Design
Human resource strategy requires consideration of the psychological components of job design

43 Hawthorne Studies They studied light levels, but discovered productivity improvement was independent from lighting levels Introduced psychology into the workplace The workplace social system and distinct roles played by individuals may be more important than physical factors Individual differences may be dominant in job expectation and contribution

44 Core Job Characteristics
Jobs should include the following characteristics Skill variety Job identity Job significance Autonomy Feedback

45 Self-Directed Teams Group of empowered individuals working together to reach a common goal May be organized for long-term or short-term objectives Effective because Provide employee empowerment Ensure core job characteristics Meet individual psychological needs

46 Self-Directed Teams To maximize effectiveness, managers should
Ensure those who have legitimate contributions are on the team Provide management support Ensure the necessary training Endorse clear objectives and goals Financial and non-financial rewards Supervisors must release control

47 Benefits of Teams and Expanded Job Designs
Improved quality of work life Improved job satisfaction Increased motivation Allows employees to accept more responsibility Improved productivity and quality Reduced turnover and absenteeism

48 Motivation and Incentive Systems
Bonuses - cash or stock options Profit-sharing - profits for distribution to employees Gain sharing - rewards for improvements Incentive plans - typically based on production rates Knowledge-based systems - reward for knowledge or skills

49 Ergonomics and the Work Environment
Ergonomics is the study of the interface between man and machine Often called human factors Operator input to machines

50 Ergonomics and Work Methods
Feedback to operators The work environment Illumination Noise Temperature Humidity

51 Methods Analysis Focuses on how task is performed Used to analyze
Movement of individuals or material Flow diagrams and process charts Activities of human and machine and crew activity Activity charts Body movement Micro-motion charts

52 Labor Standards Effective manpower planning is dependent on a knowledge of the labor required Labor standards are the amount of time required to perform a job or part of a job Accurate labor standards help determine labor requirements, costs, and fair work


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