Understanding Attribute Acceptance Sampling including Z1.4 and c=0 Plans

Duration: 90 Minutes
This webinar provides the tools needed to understand and implement acceptance sampling. It explains the basis for sampling plans, the binomial distribution, and uses it to understand the sampling plan’s performance using the operating characteristic (OC) curve.
Attribute Acceptance Sampling
Instructor: Daniel O'Leary
Product ID: 500979

Participants gain a solid understanding of how the OC curve is built, how to use it, and how to identify some of the most important points on the curve, including the AQL and RQL points. The webinar also provides complete descriptions of three other important curves that help you understand a sampling plan. The average sample number (ASN) helps you predict the number of samples you will take. The average outgoing quality (AOQ) helps you foresee the results if you inspect rejected lots. The average total inspected (ATI) helps you calculate how many items you will inspect including rejected lots.

Users of Z1.4 learn how to set up sampling and select parameters such as AQL and Level. The webinar provides a complete description of Z1.4, showing the process from receiving the lot to selecting the sample size to making the accept/reject decision. The c=0 plans are very popular, since they are based on the notion that everything in the sample should pass inspection. The course examines these plans using the curves described above. The OC curve, in these plans, has a different shape that can lead to problems.

Areas Covered
  • Sampling concepts
  • The binomial distribution
  • Characterizing sampling plans - four important curves
  • Z1.4 Plans
  • c=0 Plans
Why Should you Attend
You will learn some very important issues to consider in selecting and using sampling plans.
  • How do you know how much your inspection system costs?
  • Are you inspecting too much, and wasting money?
  • Are you inspecting too little and incurring risk?
  • Do your current managers and supervisors understand how the system works?
  • Will your ISO 9001 registrar ask for justification of these statistical methods?
  • Should you start to use these c=0 plans you have heard about?
  • Can you improve the process?
Objectives of the Presentation
  • Z1.4 Plan
    • How to use the sampling tables to determine the sampling plan
    • Ways to avoid common errors and misunderstandings with the sampling tables
    • The difference between single, double, and multiple sampling plans
    • Why double sampling plans are the most economical choice
    • The reasons for the switching rules between normal, reduced, and tightened
    • The use of the switching rules to help improve your supplier management program
    • How the switching rules can help you reduce inspection cost
  • c=0 Plan
    • How to use the c=0 plans instead of Z1.4 plans
    • The basis for the plans using the RQL point
    • The differences in the OC curves and why they can cause problems
    • How a change from Z1.4 to c=0 can impact your inventory and disrupt your suppliers
Who can Benefit
This webinar is designed for people in manufacturing who are involved in setting product specifications, setting up acceptance plans, performing acceptance activities, and supply chain management. Attendees should have knowledge of manufacturing process that includes acceptance activities such as incoming, in-process, and final acceptance. This typically includes:
  • Quality Engineers
  • Production and Process Engineers
  • Manufacturing Engineers
  • Design Engineers
  • Purchasing Managers
  • Purchasing Agents
  • Supplier Quality Engineers
  • Quality Supervisors
  • Quality Inspectors
  • Quality Managers
$375
Recorded Session for one participant
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  • Please click on the link to access the Recorded Session
  • Presentation handouts in downloadable PDF format will be updated on your OCP Account within 24 hours of the purchase of the product
  • Download the Certificate of Attendance and Purchase Invoice from your OCP Account after 48 hours of the product Purchase
  • Please share your valuable Feedback at the end of the session
Instructor Profile:
Dan is the President of Ombu Enterprises, LLC, a company offering training and execution in Operational Excellence, focused on analytic skills and a systems approach to operations management. Dan has more than 30 years experience in quality, operations, and program management in regulated industries including aviation, defense, medical devices, and clinical labs. He has a Masters Degree in Mathematics; is an ASQ certified Biomedical Auditor, Quality Auditor, Quality Engineer, Reliability Engineer, and Six Sigma Black Belt; and is certified by APICS in Resource Management.
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