Sampled inspection operation settings

Sampled inspection is a technique to determine whether a lot should be accepted or rejected on the basis of the number of defective parts found in a random sample taken from the lot. The methodology used to do the sampling depends on the type of analysis being done but may include simple random sampling or systematic sampling.

In FactoryLogix Office, the Sampled Inspection Options area of the Update Operation dialog allow you to configure how sampled inspections behave during production.

Option

Description

Sampling Plan

Specifies the sampled inspection plan to use for this operation.

MIL-STD-105E - ANSI/ASQ Z1.4 Sampling Plan - Refers to a United States defense standard that provides procedures and tables for sampling by attributes.
MIL-STD-1916 - Accept-on-Zero (c=0) - A United States defense standard that contains Accept On Zero (AOZ) plans for attributes, variables, and continuous sampling.
Squeglia Zero-Based Plan - Refers to a zero-defect sampling plan that is based on an acceptance threshold of c=0. A lot or batch will only be accepted if no non-conforming items are found in the sampled inspection.

(Batch sampling) Sample whole batch, pass/fail individual interval lots

When a whole batch is sampled, if any units fail, the entire batch will fail.

(Interval sampling) Sample incrementally on intervals, pass/fail incrementally interval lots

On Interval Lot Failure - If an interval lot fails, allows you to select what happens next: Fail Sub-Lot Only or Fail Sub-Lot and All Subsequent Units.
On interval lot pass, unload carriers related to lot - When an interval lot passes sampled inspection, specifies that the carriers for that lot will be unloaded.

Configuration settings for failed outcomes

When a sampling plan with the failed outcome set to Block and/or Quarantine is used in a sampled inspection operation, two additional configuration settings are available in the Update Operation dialog under Sampled Inspection: Blocking Mode and Quarantine Operation Name.

Note

The Block and/or Quarantine failed outcome setting applies to all sampling plan types available in FactoryLogix and applies to both production and receiving batches. See Add a quality sampling plan for more information.

Option

Description

Blocking Mode

Determines the nature of the blocking action:

Block prevents the units from being used immediately.
Quarantine routes the affected units to the selected out-of-route operation, where it will be started and paused, preventing any further in-route transactions.
Quarantine then Block routes affected units to the selected out-of-route operation and blocks the units after rerouting.

Quarantine Operation Name

Specifies the out-of-route operation to which the affected units will be moved (Diagnostics, Repair, or Repair Review, for example). This setting is required when the blocking mode is set to either Quarantine or Quarantine then Block.

Important

This setting identifies an out-of-route operation by name. All process flows expected to make use of this setting are required to have one out-of-route operation with this name (Repair or Diagnostics, for example).

Failed batch behavior in FactoryLogix Operations

In FactoryLogix Operations, when a blocking mode that includes quarantine is configured, the system moves all units in the failed batch or sub-lot to the selected out-of-route operation and starts and pauses them at that operation. This behavior prevents the units from being used in any in-route process flow operation until the quarantine is resolved and the units are unblocked. If the configured re-route operation does not exist, the system does not reroute the units—instead, the units remain at the current operation in the Paused state.

Add a quality sampling plan