DESTRUCTIVE EXAMINATION OF TEST PLATES 3 AND TEST PIECE 4 OF THE DEFECTS DETECTION TRIALS (DDT)
The evaluation of NDT exercises results has been based on destructive examination of the plates or test blocks used during the exercise. The PISC I Programme has shown that in all cases the indications given by the NDT Instrumentation were corresponding to some particular defects or structure aspects in the steel or were explained by particular positions of reflectors. Generally the introduction of defects using techniques such as - implantation of modules - introduction of non metallic material - introduction of poison in the weld do not produce a final detective zone or area which is strictly corresponding to the intended defect. the DDT exercise management has thus decided to perform a complete destructive examination of the four plates involved in this exercise. Because of its experience (the PISC I exercise) and independence of commercial interest, the JRC of the CEC, Ispra Establishment, has been asked to do the work in collaboration with the Risley Nuclear Power Development Laboratories (RNL). The present report describes the results of the destructive examination of the DDT plates 3 and 4.
Bibliographic Reference: EUR 8485 EN (1984) MF, P., BFR 120, BLOW-UP COPY BFR 235, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989122068900 / Last updated on: 1987-01-01
Available languages: en