Electrochemical potentials of stainless steel and platinum in K-Reactor moderator
Technical Report
·
OSTI ID:6809121
Most of the cracks observed in the 304 stainless steel of the Savannah River Plant (SRP) reactors have been due to Intergranular Stress Corrosion Cracking (IGSCC). The environment of the stainless steel (i.e., the reactor moderator) is a contributing cause of IGSCC, in combination with stress and sensitization of the steel. The electrochemical potential (ECP) of stainless steel in the moderator provides an indication of the tendency for IGSCC to occur. Laboratory work under boiling water reactor conditions has indicated that lowering the potential of the stainless steel sufficiently would stop IGSCC. Tests in Dresden-2 have shown that injection of hydrogen gas to scavenge oxygen, termed hydrogen water chemistry, lowered the stainless steel potential and stopped both IGSCC initiation and growth. for these reasons the decision was made to measure stainless steel potentials in a SRP reactor. The purpose of this report is to describe the results of more than a year of online measurements of ECP's of stainless steel and platinum electrodes in K-Reactor moderator. 19 refs., 8 figs., 3 tabs.
- Research Organization:
- Savannah River Lab., Aiken, SC (USA)
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 6809121
- Report Number(s):
- DPST-88-621; ON: DE88017183
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
220700* -- Nuclear Reactor Technology-- Plutonium & Isotope Production Reactors
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
CRACKS
DATA
ELEMENTS
HEAVY WATER MODERATED REACTORS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
K REACTOR
METALS
MODERATORS
NATIONAL ORGANIZATIONS
NUMERICAL DATA
PLATINUM
PLATINUM METALS
POTENTIALS
PRODUCTION REACTORS
REACTORS
SAVANNAH RIVER PLANT
SPECIAL PRODUCTION REACTORS
STAINLESS STEELS
STEELS
STRESSES
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
220700* -- Nuclear Reactor Technology-- Plutonium & Isotope Production Reactors
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
CRACKS
DATA
ELEMENTS
HEAVY WATER MODERATED REACTORS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
K REACTOR
METALS
MODERATORS
NATIONAL ORGANIZATIONS
NUMERICAL DATA
PLATINUM
PLATINUM METALS
POTENTIALS
PRODUCTION REACTORS
REACTORS
SAVANNAH RIVER PLANT
SPECIAL PRODUCTION REACTORS
STAINLESS STEELS
STEELS
STRESSES
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS