Fish-bone diagram

Figure 3.18 Fish bone diagram showing the important stages for metal analysis using ICP-OES from sampling through to reporting. All steps are not applicable to every analysis but each method can have a similar design associated with that method...

The fish bone diagram shown in Figure 3.18 illustrates the main points that need to observed in sample analysis at each stage from sampling to reporting results. 

Figure 2 Cause-and-effect (fish-bone) diagram for affinity chromatography purification.

You can take your list of why questions and use them in conjunction with a Fish Bone Diagram. Below is a sample Fishbone Model. 

A fish bone diagram is an Ishikawa diagram, which is used to analyze problems and show the various causes of an event. It is sometimes used in accident/ mishap investigations. 

Figure 2.45 Ishikawa diagram (or fish bone diagram).

The Cause Effect Diagram is also called a fishbone diagram because of its resemblance to a boned fish. Fishbone diagrams were first demonstrated in the 1940s by Dr. Kaoru Ishikawa, a Japanese engineer. He wanted a simple, graphical way to show the relationships between the inputs and outputs of a... 

There are many problem solving and improvement tools and techniques. The most common are root cause or cause and effect diagrams (also known as fish-bone or Ishikawa diagrams). Other techniques include flow charts, input-output analysis, scatter diagrams and why-why analysis. 

Figure 2.45 shows the Ishikawa diagram concept. Notice that it tends to look like a fish bone, explaining the derivation of its alternate name. The primary and secondary causes are listed in the fishbone lines. 

The technique used to categorize and structure the JHA is the cause and effect diagram, which provides a visual picture of the job, its steps, and tasks. This diagram developed by Ishikawa is also known as a Fishbone diagram (Fishbone, n.d.j.The fishbone allows the JHA developer to list all of the elements of the job as well all of the tasks as they relate to specific steps. Additional fish bones are used to collect the data outlined above at both the macro level (steps) and a micro view (tasks). 

In the early 1940s. R. J. Williams et al. used the term folic add in referring to a vitamin occurring in leaves and foliage of spinach, from the Latin for leaf (folium). Prc i-ously. it was called vitamin M and vitomin Bt/. Since then, folic acid has been found in whey, mushrooms, liver, yciut. bone marrow, soybeans, and fish meal, oil of which are ex-ccllent dietary sources. The structure (.sec diagram) has been proved by synthesis in many laboratories (e.g.. see Waller et al. -"-... 

Start with the effect (a fishhead), a specific problem. Then add the cause (the fish body), composed of the backbone and other bones. A good diagram wiU have three or more levels of bones (backbone, major bones, minor bones on the major bones). There are various strategies for defining the major bones. Consider the 4 M s manpower, machines, methods, materials. Or use the 4 P s policies, procedures, people, plant. Or be creative. 

A method used to illustrate and pinpoint the likely causes of a concern. It is sometimes referred to as a Root Cause Analysis. It typically uses an Ishikawa (wish bone) or tree diagram (see Figure C.2), where the main concern is depicted at the head of the fish spine and the most likely causes are shown as the attached bones. When identified the root cause can be modified to eliminate or reduce the concern. See also Root Cause Analysis (RCA). 

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