DESTRUCTIVE EXAMINATION OF TEST PLATES 1 AND 2 OF THE DEFECTS DETECTION TRIALS (DDT)
The evaluation of DDT exercises results has been based on destructive examination of the plates or test blocks used during the exercise. Th PISC 1 Programme has shown that in all cases the indications given by the DDT 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 1 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). A collaboration agreement has been signed between RNL and JRC, Operating Agent of the PISC II programme, is interested in having a direct access to data to be added to those furnished by PISC. The present report describes the results of the destructive examination of the DDT plates 1 and 2.
Bibliographic Reference: 8484 EN (1984) MF, 48 P., BFR 120, BLOW-UP COPY BFR 240, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989122079100 / Last updated on: 1987-01-01
Available languages: en