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Radiography of thinwall stainless steel piping welds

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Radiographic inspection of thinwall stainless steel piping welds can present difficulties and anomalies with regard to the achievement of radiographic sensitivity1.

This paper describes a series of practical investigations which looked at the attained values of radiographic sensitivity when radiation type, film type and IQIs are varied on pipe butt welds ≤14 in φ × ≤9.5 mm-thick.

Results from the investigations show that improved radiographic sensitivity can be achieved when the radiation, film and IQI type are manipulated (in several combinations).

Whilst it is recognised that a series of specific investigations such as these cannot be construed to be definitive, they serve as a reminder that the achievement of code-compliant radiographic sensitivity does not always guarantee the detection of important planar flaws.
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Document Type: Research Article

Affiliations: 1: Eskom, Koeberg Nuclear Power Station, Private Bag X10, Kernkrag 7440, Melkbos, Cape Town, South Africa 2: SCS International, PO Box 417, Wigan WN6 8WR, United Kingdom

Publication date: January 1, 2004

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