Fuel and poison rod bowing. [PWR]

Technical Report · Fri Oct 01 04:00:00 EDT 1976

OSTI ID:7228157

Bowing of fuel and poison rods has been observed in operating PWR's of C-E and other manufacturers. The severity and frequency of bow may be a function of burnup, as well as of manufacturing tolerances and of basic design features. Several of these features in C-E reactors result in fuel rod bowing of significantly lower magnitude than that observed in other reactors. The report presents observational data for bowing in C-E reactors, predicts bowing magnitude on a generic basis to end of life, and discusses the effects of fuel and poison rod bowing on power peaking, DNB, fretting, and corrosion. It is shown that no significant rod-bow related effects on plant operation are expected for C-E reactors.

• Research Organization: Combustion Engineering, Inc., Windsor, CT (USA)
• OSTI ID: 7228157
• Report Number(s): CENPD-225
• Country of Publication: United States
• Language: English

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CONTROL ELEMENTS
CORRELATIONS
DATA
DEFORMATION
FUEL ELEMENTS
FUEL RODS
INFORMATION
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS