Inspectioneering
Inspectioneering Journal

NDE Input to Fitness for Service Decision Making

Part 2

By C.P. Hsiao, and Greg Alvarado at Inspectioneering Journal. This article appears in the May/June 2002 issue of Inspectioneering Journal

We have discussed various factors that can affect the reliability of NDE techniques (i.e., probability of detection - POD and sizing accuracy) in Part 1. In general, it is difficult to quantify these uncertainties. In fact, it is impossible to fully quantify the uncertainties in NDE results. However, one can achieve a higher level of reliability by reducing or minimizing the uncertainties. We will discuss some of the steps one can take to minimize the uncertainties in NDE results. By minimizing or reducing the uncertainties in NDE results, FFS assessments can be less conservative, and thus provide more margin to the serviceability of the equipment.

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