Damage dosimetry and embrittlement monitoring of nuclear pressure vessels in real time by magnetic properties measurement
The objective of this project is to develop a technique for real-time monitoring of neutron dose and of the onset and progression of embrittlement in operating nuclear pressure vessels. The technique relies on the measurement of magnetic properties of steel and other magnetic materials which are extremely sensitive to radiation-induced properties changes. The approach being developed here is innovative and unique. It promises to be readily applicable to all existing and planned reactor structures. The significance of this program is that it addresses a major concern in the operation of existing nuclear pressure vessels. The development of microscopic defect clusters during irradiation in the nuclear pressure vessel beltline region leads to an increase in material yield strength and a concomitant decrease in ductility, or ability to absorb energy in fracture (i.e. fracture toughness). This decrease in fracture toughness is alarming since it may impair the ability of the pressure vessel to resist fracture during unusual loading situations.
- Research Organization:
- Illinois Univ., Urbana, IL (United States). Dept. of Nuclear Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER13030
- OSTI ID:
- 7104306
- Report Number(s):
- DOE/ER/13030-2; ON: DE93000422
- Country of Publication:
- United States
- Language:
- English
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Damage dosimetry and embrittlement monitoring of nuclear pressure vessels in real time by magnetic properties measurement. Final report
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Related Subjects
36 MATERIALS SCIENCE
BORON ALLOYS
FRACTURE PROPERTIES
IRON ALLOYS
NIOBIUM ALLOYS
PRESSURE VESSELS
PHYSICAL RADIATION EFFECTS
REACTOR VESSELS
STEELS
DAMAGING NEUTRON FLUENCE
EMBRITTLEMENT
MAGNETIC PROPERTIES
MAGNETS
PROGRESS REPORT
RADIATION MONITORING
REAL TIME SYSTEMS
ALLOYS
CONTAINERS
DOCUMENT TYPES
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MONITORING
NEUTRON FLUENCE
PHYSICAL PROPERTIES
RADIATION EFFECTS
220200* - Nuclear Reactor Technology- Components & Accessories
360106 - Metals & Alloys- Radiation Effects
360103 - Metals & Alloys- Mechanical Properties