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Proceedings Paper

Investigation in welding technology for pipelines at a nuclear plant by holographic interferometry
Author(s): Vladimir S. Obraztsov; Igor N. Odintsev; Yu. O. Zakharzhevsky; M. A. Pavlov; A. V. Tsykin
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Paper Abstract

Effect of the standard size of pipes made from 08x18H10T austenitic chromium-nickel steel on the level of residual weld stresses on the inner surface in the weld junction area were experimentally studied by holographic interferometry. The results obtained in the course of experimental investigations reveal that one can control the level of residual stresses within the certain limits by matching diameter and wall thickness of the pipes. For the welding practice accepted for pipes 300 mm in passage diameter made from 08 x 18H10T austenitic chromium-nickel steel it is better to use pipes Θ 273 x 11 mm. In this case the tension welding stress does not exceed 110 MPa, while it makes up 325 MPa in the heating area of the weld for pipes 325 x 12 mm. Technique and instrumentation for holographic inspection of residual welding stresses is described.

Paper Details

Date Published: 4 June 2004
PDF: 7 pages
Proc. SPIE 5477, Sixth International Conference on Correlation Optics, (4 June 2004); doi: 10.1117/12.560153
Show Author Affiliations
Vladimir S. Obraztsov, Research Institute for Complex Testing of Optoelectronic Devices and Systems (Russia)
Research Institute for Complex Testing of Opto-electronic Devices and Systems (Russia)
Igor N. Odintsev, Engineering Ctr. of Nuclear Equipment Strength, Reliability and Lifetime (Russia)
Yu. O. Zakharzhevsky, Leningrad Nuclear Power Plant (Russia)
M. A. Pavlov, Leningrad Nuclear Power Plant (Russia)
A. V. Tsykin, Leningrad Nuclear Power Plant (Russia)

Published in SPIE Proceedings Vol. 5477:
Sixth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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