Effect of temperature on steam generator fretting-wear

Book · Sun Dec 01 04:00:00 EST 1996

OSTI ID:403396

Guerout, F M; Fisher, N J; Grandison, D A; Weckwerth, M K ^[1]

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1. Atomic Energy of Canada Limited, Chalk River, Ontario (Canada). Chalk River Labs.

Flow-induced vibration of steam generator tubes results in fretting-wear damage at the tube-to-support locations. A test program was conducted to assess the effect of temperature on steam generator tube fretting-wear. Tests were performed using lattice bar supports, at temperatures ranging from 25 to 315 C. A parameter called work-rate was used to normalize the wear rates and interpret the results in terms of wear coefficients. The role of corrosion was investigated and Scanning Electron Microscope examinations of fretted samples were performed to provide complementary information and identify pre-eminent fretting-wear mechanisms. The results revealed a significant effect of temperature on steam generator tube fretting-wear. Wear rates measured at elevated temperature are greater than those measured at room temperature. A peak in damage rate is observed at approximately 200 C, beyond which wear decreases with temperature.

• OSTI ID: 403396
• Report Number(s): CONF-960706--; ISBN 0-7918-1775-X
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
EXPERIMENTAL DATA
FLUID-STRUCTURE INTERACTIONS
FRETTING CORROSION
INCOLOY 800
MECHANICAL VIBRATIONS
NUCLEAR POWER PLANTS
STEAM GENERATORS
TEMPERATURE DEPENDENCE
TUBES
WEAR