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Conference Article: Post-service examination of a 10 MW helium-helium heat exchanger and comparison with long term behaviour in laboratory tests
Cook, R.H.; Graham, L.W. (R.M. Detection Ltd, Poole, Dorset (UK). High Temperature Materials Programme (HTMP)); Exner, R. (Balcke-Duerr AG, Ratingen (Germany, F.R.))Abstract
As part of the component test programme of the PNP Project, a 10 MW Helium/Helium heat exchanger (URKO: U-Rohr-Kompact Waermetauscher) designed and fabricated by Balcke-Duerr AG has been tested in the Komponentenversuchskreislauf (KVK) test facility at Interatom. The test run lasted for several months with a significant proportion of the operation being conducted at or near the peak design temperature of 950 deg. C. Following the test the heat exchanger was subjected to an examination to investigate the effects of the exposure and to determine the residual life of the key components. The present paper is concerned with the destructive examination being performed on the heat exchanger tubes at High Temperature Materials Programme (HTMP). The results so far obtained indicate that the exposure caused no damage to the tubes, the effects observed being within the range established in laboratory exposures previously carried out on specimens of several heats of the nickel base alloy, DIN 2.4663 used in the construction of the heat exchanger.
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key words: Gas Cooled Reactor, Nuclear Technology
- Reference:
- High temperature metallic materials for gas-cooled reactors. Proceedings of a
specialists meeting held in Cracow, 20-23 June 1988
- International Atomic Energy Agency, Vienna (Austria). International Working Group on Gas-Cooled Reactors
- IWGGCR--18, pp:124-130
- International Atomic Energy Agency, Vienna (Austria). International Working Group on Gas-Cooled Reactors