1 / 18

Operations analysis

Operations analysis. Location analysis. Location of One Item Example: Locating printer, scanner, & copier station in a department. Systematic Layout of Multiple Items See pp. 90-93. B. 2. 1. 4. 3. 5. A. Pareto Analysis: ‘Fight the Giants’.

marnin
Download Presentation

Operations analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Operations analysis

  2. Location analysis • Location of One Item • Example: Locating printer, scanner, & copier station in a department. • Systematic Layout of Multiple Items • See pp. 90-93 B 2 1 4 3 5 A

  3. Pareto Analysis: ‘Fight the Giants’ • Concept – bulk of the problems (opportunities) are concentrated in a few items • “Fight the Giants” • Example: causes of long wait times at a health clinic

  4. Process analysis • Overview of the process • Identify opportunities for improvement • Useful communication tool • Major types • Process chart • single object / person (Ergo) • assembly process • multi-activity chart (Ergo) • Flow diagram (Ergo, Visio) • Fish (Ishikawa) diagram (Visio) • Decision structure table

  5. Process chart • Symbology • Details • time, distance • SEARCH • notes • Documentation • Example – preparing a form letter for mailing • see next page

  6. In Ergo …

  7. Another example – improved process

  8. Flow diagram • Usually combined with process chart to visualize physical space. • Example: Preparation and gathering for a design team meeting. (See next page.)

  9. Other process charts • Assembly process charts • show relationships among components, how several processes interact • useful for methods analysis • identify delays, storage problems • example, pg. 97 • Multi-activity chart ‘gang chart’, ‘man-machine’ chart, ‘left-hand right hand’ chart • common, scaled time axis • identify idle time, unbalanced operations • opportunities for • job sharing • double tooling • kitting • examples, pg. 99

  10. Fish diagrams • aka, Ishikawa diagram, Cause & Effect diagram • Useful for brainstorming, identify opportunities to improve • ‘Head’ of the fish is the problem or desired effect • ‘Skeleton’ identifies potential causes • 4 M’s – manpower, machines, methods, materials • 4 P’s – policies, procedures, people, plant

  11. Example • Improve design team meeting productivity

  12. Borg Vote – Rating of Perceived Exertion (RPE) multiply by 10 to estimate heart rate. Subjective evaluation

  13. Subjective evaluation • Body discomfort map • Body portions

  14. Body discomfort scales • Discomfort scale • Borg • Category partitioning • See table 6.9, pg. 102

  15. Relative and absolute scales • Semantic differential (absolute scale) • Rate aspects of the workspace, methods, etc. on a scale between 2 opposite adjectives, • e.g. comfortable ___ : ___ : ___ : ___ : ___ : ___ : ___ uncomfortable spacious ___ : ___ : ___ : ___ : ___ : ___ : ___ cramped • Alternatively, choose one adjective (acceptable, comfortable, etc.) and evaluate several aspects of the workplace, methods, etc. on that one objective • e.g., acceptability, comfort, etc.

  16. Relative and absolute scales • Paired votes (relative) • Compare two alternatives on a relative ranking scale, • e.g., Prefer notes using Sympodium (A) or SmartBoard (B) Indicate degree of preference

  17. Related concepts • Evolutionary Operation of Processes (EVOP) • Designed series of experiments to evaluate the effects on the output of the process of changing specific variables • Key idea is to make changes while the process is active (i.e., not as a separate experiment) • Substitute number of runs for strict control • Project scheduling • CPM • PERT

More Related