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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
1
ISBN electronic:
978-1-62708-214-3
Publication date:
1992
Book Chapter

Gear Failure of a Pressurized Heavy-Water Reactor Refueling Machine

By
Antonio F. Lorio
Antonio F. Lorio
Gerencia de Desarrollo, Comisión Nacional de Energia Atómica
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;
Juan C. Crespi
Juan C. Crespi
Gerencia de Desarrollo, Comisión Nacional de Energia Atómica
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Published:
1992
Page range:
231 - 233

Abstract

A gear belonging to a pressurized heavy-water reactor refueling machine failed after 10 years in service. The material specified for the gear was a type C90700 bronze. Macroscopic examination focused on three gear teeth that had fractured completely at the roots, and fracture zones were examined using SEM microscopy. Failure of the gears was attributed to heavy wear resulting from misalignment. A lack of adequate lubrication was also noted. Periodic alignment adjustment and lubrication were recommended.

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Antonio F. Lorio, Juan C. Crespi, 1992. "Gear Failure of a Pressurized Heavy-Water Reactor Refueling Machine", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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