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Root cause analysis.

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Presentation on theme: "Root cause analysis."— Presentation transcript:

1 Root cause analysis

2 Also known as fish-bone diagram

3 Root cause analysis In any organization numerous problems exist in all facets of its activities. The efficiency and survival of the organization depends on how promptly these problems are recognized and their root causes are isolated and eliminated.

4 Root cause analysis A systematic analysis of each potential problem area should be carried out to recognize the root causes which are responsible for creating the problem. Such analysis is called Root Cause Analysis.

5 Possible root causes for non conformance/ defects

6 Machine factors Inadequate process capability
Incorrectly designed tooling Poor maintenance Equipment effected by environmental factors such as heat, humidity etc.

7 Material factors Use of untested materials Mix-up of materials
Substandard material accepted on concession because of non-availability of correct material Inconsistency in specifications on the part of vendors

8 Men factors Incorrect knowledge of setting up machines
Undue rush by the operator to achieve quality targets Lack of understanding of drawing instructions relating to a process Operator does not posses requisite skill for operating machines

9 Method factors Inadequate process controls
Non availability of proper test equipments Test equipment out of calibration Vague inspection/ testing instructions

10 Cause and effect diagram
Cause and effect diagram (also known as ishikawa diagram or fishbone diagram) is an analysis tool to analyze many potential or actual causes of a problem in a systematic way. It is a very effective way of improving the quality of the product or service.

11 Cause & Effect diagram - Major and subsidiary causes
Material Methods Environment Noise level Procedures Assemblies Temperature Humidity Consumables Components Accounting Suppliers Lighting Policies Quality Variability Instruments Training Experience Tests Technology Tooling Attitude Gauging Skill Fixtures Counting Men Machine Measurement

12 Example of Cause & Effect diagram - Low operating profit
Material Methods Environment Inadequate process control High Noise level High lead time poor review system Heat High inventory Poor QC Poor quality of vendors Poor Lighting Poor MIS Low operating profit High variation Inadequate Instruments Inadequate Training Lack of Experience Old machines Poor Maintenance No SPC Low motivation Frequent breakdowns Inadequate measurement Men Machine Measurement

13 Click on the boxes to enter your cause & effect
Material Methods Environment Click to enter click Men Machine Measurement


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