Browse Prior Art Database

Sampling Plan and Reporting System

IP.com Disclosure Number: IPCOM000075798D
Original Publication Date: 1971-Nov-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 3 page(s) / 43K

Publishing Venue

IBM

Related People

Martin, CR: AUTHOR [+2]

Abstract

The flow chart represents a sampling plan and reporting system for monitoring the quality of components from various sources. The sampling plan is implemented by a real-time data processing system, which instructs operators at remote terminals as to the sampling sequence and inspection required. The sampling plan begins by identifying the lot to be inspected.

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Sampling Plan and Reporting System

The flow chart represents a sampling plan and reporting system for monitoring the quality of components from various sources.

The sampling plan is implemented by a real-time data processing system, which instructs operators at remote terminals as to the sampling sequence and inspection required. The sampling plan begins by identifying the lot to be inspected.

The first decision at block 10 is whether the lot contains current-level components, components with engineering change, or components of a down- level (previous) design. The data processing system keeps track of each component by part number as to whether it is current design or down-level design. If the part number if a current design, the process proceeds to decision
12.

If the part number represents an engineering change or a previous design, the process proceeds to block 14. Step 14 flags the lot to the inspector that the lot contains components representing an engineering change or down-level design. The operator marks the lot correspondingly and returns process control to step 12. Decision 12 queries the system as to whether there is a lot being currently inspected. If there is, the present lot is held pending inspection results of the previous lot. If there is no lot being inspected, process control passes to block 16.

Decision block 16 checks whether the source of the lot is a high-quality source. The quality of the source would be established by previous history of components received from the same source. If the source is of high quality, the process branches left to step 18. On the other hand, if the source is not established as a high-quality source, process branches to step 20. Military Standard (MIL-STD-105D) sampling procedures are initiated at this point.

The remaining portion of the above flow chart is symmetrical left and right about the center of the drawing. The only difference in the functions on the left or right is the strictness of the detail sampling plans represented by each functional block. However, the relationship between the functional blocks whether on the left side...