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In designing primary circuits according to the various design codes it is standard to create in the piping a counterbore (CB). The machining and geometry of the counterbore are important for plant safety as a CB machined with sharp edges can, under certain circumstances, give rise to the creation of shear forces which may lead to the formation of cracks. Also, an accentuated CB may have an effect on the evaluation of the results. The aim of the work was to check precisely the influence of the CB on the detection of known artificial flaws, such as simulated fatigue or corrosion cracks, changing a number of parameters.

Additional information

Authors: VOLCAN A, JRC Petten (NL);LEMAITRE P, JRC Petten (NL)
Bibliographic Reference: Paper presented: ASME Pressure Vessels and Piping Conference, Minneapolis (US), June 19-23, 1994
Availability: Available from (1) as Paper EN 38462 ORA
Record Number: 199411021 / Last updated on: 1994-11-28
Original language: en
Available languages: en
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