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Object documentationSample Plan

 

Set of ANSI-based or custom settings defining sampling process details and accept/reject decision criteria

 

A flexible approach to executing a sample plan needs to accommodate various quality policies and inspection strategies. Flexibility also includes the ability to associate a sample plan with specific materials or material groups to control the heterogeneity of the sample population.

You define a sample plan in Sample Plan Maintenance and attach it to a specific combination of material (material group) and operation. For sampling operation, define the resource as a process resource to assure that different users can process the sample. You can attach multiple sample plans to one material or operation. In this case, a sample plan for each selected SFC number is chosen by the lowest sequence number. If the sequence number is a tie, the sample plan is chosen alphabetically by sample plan name.

You can also define the resource for sampling. If a resource is not defined, sampling can be performed on any resource at a defined operation.

Note that you cannot attach sample plan to operation that has attached buyoffs or is a member of Simultaneous Group or Any Order Group.

Structure

You have to define the following required key attributes for a sample plan:

  • Type

  • Status

    Note that the status of a sample plan has to be Releasable for an operator to work with this sample plan.

  • Version

  • Sample Routing

  • NC Severity Threshold

  • SFC Group Size

  • Acceptance Quality Limit

When the ANSI type is used to define a sample plan, the accept and reject numbers are determined by the system based on the ANSI standard.

With the Custom type, the user can enter values for accept and reject numbers.

Example Example

If the reject number is 3, it means that the sample is rejected if three or more pieces of sample SFC numbers fail inspection.

End of the example.

Note that an accept number is always smaller than a reject number.

You can define the following optional settings for a sample plan:

  • Which SFC numbers to include in an SFC group (see SFC Group)

  • Sample reject message type

  • Sample skip message type

For more information, see Sample Plan Maintenance and Setting Up Sampling.