An advanced coupled environment fracture model for predicting crack growth rate in LWR heat transport circuits
Creators
- 1. Pennsylvania State Univ., University Park, PA (United States)
Description
Our previously described coupled environment fracture model (CEFM) for intergrannular stress corrosion cracking (IGSCC) and irradiation-assisted stress corrosion cracking (IASCC) in light water reactor heat transport circuit components has been extended to consider steel corrosion, oxidation of hydrogen, and the reduction of hydrogen peroxide, in addition to the reduction of oxygen (as in the original CEFM), as charge transfer reactions occurring on the external surfaces. The model invokes charge conservation as the principal condition that must be satisfied during crack growth and predicts that control of the crack growth rate (CGR) may reside in either the crack internal or external environments. The model provides rational explanations for the effects of oxygen, conductivity, stress, and hydrogen (as used in hydrogen water chemistry in BWRs) on CGR in sensitized Type 304 in simulated LWR in-vessel environments and may become the basis of a deterministic method for estimating component life times
Additional details
Publishing Information
- Publisher
- American Nuclear Society, Inc.
- Imprint Place
- La Grange Park, IL (United States)
- Imprint Title
- Proceedings of the fifth international symposium on environmental degradation of materials in nuclear power systems - water reactors
- Imprint Pagination
- 995 p.
- Journal Page Range
- p. 345-349.
Conference
- Title
- 5. international symposium on environmental degradation of materials in nuclear power systems - water reactors.
- Dates
- 25-29 Aug 1991.
- Place
- Monterey, CA (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26060147
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CRACK PROPAGATION; INTERGRANULAR CORROSION; REACTOR COOLING SYSTEMS; STAINLESS STEEL-304; STRESS CORROSION; WATER CHEMISTRY; WATER COOLED REACTORS
- Descriptors DEC
- ALLOYS; AUSTENITIC STEELS; CARBON ADDITIONS; CHEMICAL REACTIONS; CHEMISTRY; CHROMIUM ALLOYS; CHROMIUM-NICKEL STEELS; COOLING SYSTEMS; CORROSION; CORROSION RESISTANT ALLOYS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; NICKEL ALLOYS; REACTOR COMPONENTS; REACTORS; STAINLESS STEELS; STEEL-CR19NI10; STEELS; TRANSITION ELEMENT ALLOYS
Optional Information
- Secondary number(s)
- CONF-910808--.