U.S. Department of EnergyOffice of Scientific and Technical Information
Intergranular attack of alloy 600 tubing: Simulation tests: Interim report
Abstract
In some steam generators, intergranular attack (IGA) has been detected on alloy 600 tubes within or near the tube sheet crevice region. Refreshed autoclave tests were performed to simulate caustic or river water in-leakage. The objective of the caustic tests was to perfect the test methodology, in order to closely simulate IGA that occurs in an actual steam generator, to identify causes and to test countermeasures in future tests. Tests with caustic pollution succeeded in producing representative IGA, and the test method is now believed applicable for studying countermeasures. The continuation of a river water fault test already tested for 4500 hours was aimed at checking if IGA was producible with only fresh water in-leakage, or if other deleterious species were involved in the cause of phenomenon. IGA was not detected for this case, which tends to indicate that another (not yet identified) specie acts as either a depassivating agent or a corrosion initiator in actual steam generators.
- Authors:
- Publication Date:
- Research Org.:
- CEA Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Section d'Etude de la Corrosion Aqueuse; Framatome, 92 - Paris La Defense (France); Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI Identifier:
- 6238018
- Report Number(s):
- EPRI-NP-5377
ON: TI87920572
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; INCONEL 600; INTERGRANULAR CORROSION; PWR TYPE REACTORS; STEAM GENERATORS; TUBES; CRACK PROPAGATION; CREVICE CORROSION; DESTRUCTIVE TESTING; EDDY CURRENT TESTING; ELECTROCHEMISTRY; PH VALUE; STRESS CORROSION; WATER CHEMISTRY; ALLOYS; BOILERS; CHEMICAL REACTIONS; CHEMISTRY; CHROMIUM ALLOYS; CORROSION; ELECTROMAGNETIC TESTING; INCONEL ALLOYS; IRON ALLOYS; MATERIALS TESTING; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; NONDESTRUCTIVE TESTING; REACTORS; TESTING; VAPOR GENERATORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210200* - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled; 360105 - Metals & Alloys- Corrosion & Erosion
Citation Formats
Daret, J. Intergranular attack of alloy 600 tubing: Simulation tests: Interim report. United States: N. p., 1987.
Web.
Daret, J. Intergranular attack of alloy 600 tubing: Simulation tests: Interim report. United States.
Daret, J. 1987.
"Intergranular attack of alloy 600 tubing: Simulation tests: Interim report". United States.
@article{osti_6238018,
title = {Intergranular attack of alloy 600 tubing: Simulation tests: Interim report},
author = {Daret, J},
abstractNote = {In some steam generators, intergranular attack (IGA) has been detected on alloy 600 tubes within or near the tube sheet crevice region. Refreshed autoclave tests were performed to simulate caustic or river water in-leakage. The objective of the caustic tests was to perfect the test methodology, in order to closely simulate IGA that occurs in an actual steam generator, to identify causes and to test countermeasures in future tests. Tests with caustic pollution succeeded in producing representative IGA, and the test method is now believed applicable for studying countermeasures. The continuation of a river water fault test already tested for 4500 hours was aimed at checking if IGA was producible with only fresh water in-leakage, or if other deleterious species were involved in the cause of phenomenon. IGA was not detected for this case, which tends to indicate that another (not yet identified) specie acts as either a depassivating agent or a corrosion initiator in actual steam generators.},
doi = {},
url = {https://www.osti.gov/biblio/6238018},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Aug 01 00:00:00 EDT 1987},
month = {Sat Aug 01 00:00:00 EDT 1987}
}