Engineering Transactions, 39, 1, pp. 49-58, 1991

Assessment of Material Damage of Boiler Down-Pipes

A. Krajczyk
Technical University of Wrocław, Wrocław
Poland

A. Pszonka
Technical University of Wrocław, Wrocław
Poland

R. Żuchowski
Technical University of Wrocław, Wrocław
Poland

The results of damage examination of boiler down-pipes (type OR/32) are presented. The investigation program included: static tension test, determination of fracture toughness, hardness measurement and metallographic examination. It was found that material of worked down-pipes in the vicinity of knees has been damaged and thus these down-pipes must have been removed from service. Taking into account the results of hardness measurement of specimens made of virgin down-pipe knee it has been found that the virgin down-pipes are not fit to be put into service either.

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References

R.ŻUCHOWSKI, Specific strain work as a measure of material damage, Trans. 7th Inter. Conf. on Structural Mechanics in Reactor Technology, vol. L, L1/6, 39-46, North-Holland 1983, Chicago 1983.

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