Tube-support response to tube-denting evaluation. Volume 1. Final report. [PWR]
Technical Report
·
OSTI ID:6026855
The response of the tube supports is one of the important considerations of tube denting in a steam generator. Investigations have indicated that damaged tube supports have the potential to distort and damage tubes. This investigation considers the response to tube denting of the Combustion Engineering type tube supports. Drilled support plates and eggcrate tube supports are tested in a model steam generator in which tube denting is induced. The experimental data is used to verify and refine analytical predictor models developed using finite element techniques. It was found that analytical models underpredicted the deformations of the tube supports and appropriate modifications to enhance the predictive capability are identified. Non-destructive examination methods are evaluated for application to operating steam generators. It was found that the standard eddy current and profilometry techniques are acceptable methods for determining tube deformations, but these techniques are not adequate to assess tube support damage. Radiography is judged to be the best available means of determining the extent and progression of damage in tube supports.
- Research Organization:
- Combustion Engineering, Inc., Chattanooga, TN (USA). Chattanooga Nuclear Operations
- OSTI ID:
- 6026855
- Report Number(s):
- EPRI-NP-2971-Vol.1; ON: DE83902278
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CARBON STEELS
CHEMISTRY
CORROSION DENTING
DAMAGE
DEFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL STRUCTURES
PWR TYPE REACTORS
REACTORS
STEAM GENERATORS
STEELS
STRAINS
SUPPORTS
TEST FACILITIES
TUBES
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CARBON STEELS
CHEMISTRY
CORROSION DENTING
DAMAGE
DEFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL STRUCTURES
PWR TYPE REACTORS
REACTORS
STEAM GENERATORS
STEELS
STRAINS
SUPPORTS
TEST FACILITIES
TUBES
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS