Tube-support response to tube-denting evaluation. Volume 2. Appendix H: test data. Final report

Technical Report · Sun May 01 04:00:00 EDT 1983

OSTI ID:6231270

Anderson, P L; Hall, J K; Shah, P K; Wills, R L

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: 6231270
• Report Number(s): EPRI-NP-2971-Vol.2; ON: DE83902295
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500 -- Engineering-- Materials Testing
421000* -- Engineering-- Combustion Systems
BOILERS
DEFORMATION
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
INDUSTRIAL RADIOGRAPHY
INSPECTION
MATERIALS TESTING
MECHANICAL STRUCTURES
NONDESTRUCTIVE TESTING
STEAM GENERATORS
SUPPORTS
TESTING
TUBES
VAPOR GENERATORS