Check Sheet in 7 QC Tools

Check Sheet in 7 QC Tools

→ It is a systematic method of collecting, recording and presenting the relevant data in a simple manner for analysis of the process and it is also known as a "Tally Sheet".
→ It can collect qualitative and quantitive data also.
→ It is one of the most popular tools of 7 QC Tools for process improvement.

Different Types:

→ Dr. Kaoru Ishikawa identified five different types which are mentioned below.
  1. Process performance, 
  2. Defect item,  
  3. Defect location, 
  4. Task conformation (Related to traceability) etc...
  5. Defect cause

Different types of a Check Sheet



Steps for Making a Check Sheet in 7 QC Tools:

→ The five steps are mentioned below.
  1. Establish what information is needed.
  2. Determine 5W and 2H.
  3. Construction.
  4. Testing.
  5. Take the final approval for Use.

Steps for Making a Check Sheet



Step 1. Establish what information is needed

→ Define what information is needed?
→ Sometimes this is known as record form, data form, etc....

Step 2. Determine 5W 2H:

→ Why is the data needed?
→ What type of information collection is required?
→ Where the data should be collected from? (Plant/machine/place)
→ Who has to collect the data?  (Operator/ supervisor/manager)
→ When will the information be collected?  (Every hour/ at the time of receipt)
→ How the data should be measured? (Instrument/clock)
→ How much data is essential?


Step 3. Construction of the Sheet:

➝ CheckSheet has three types of information.
     [1] Title
     [2] Source information
           ⇢ Name of the project/ problem theme.
           ⇢ Location of data collection.
           ⇢ Date and/or time.
           ⇢ Name of the person recording data.
     [3] Content information
           ⇢ Column/Raw with defect/event name.
           ⇢ Then Column/Raw to record frequency.
           ⇢ And Column/Raw to record total.

Step 4. Testing of Sheet:

➝ Test the Sheet with at least three different collectors.
➝ Reconfirm that the columns/ rows are relevant and required.
➝ Check if the Sheet is easy to record and use.
➝ Make changes based on the feedback.



Step 5. Final approval for using this sheet:

➝ Explain the use of this sheet to the data collector.
➝ Ensure that the data collector understands the reason for which the data is being collected.
➝ Collect data.
➝ Standardize its use to assure consistency.

Examples:

➝ For a better understanding refer below picture.
➝ In this example, we have mentioned the day-wise count of the defect and at the end of the week analyze the defect to take appropriate action to eliminate those.

Example of Check Sheet


➝ The example of the defect collection tally sheet is mentioned below.
➝ In this example, we have counted the frequency of various defects at the time of checking the product in ongoing production.

Example of Tally Sheet

Benefits:

➝ By using this we can make data gathering simple, systematic, easy and effective
➝ We can save time and get easily data collection in regular Manufacturing Process
➝ It is used for monitoring process performance
➝ We can use this for different purposes like counting, tracking, etc.
➝ It is also very helpful for traceability

👉 Also Read:
      2. Cause & Effect Diagram (Fishbone or Ishikawa)



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