NRL-EPRI research program (RP886-2), evaluation and prediction of neutron embrittlement in reactor pressure vessel materials. Annual progress report for CY 1978
Technical Report
·
OSTI ID:5504673
Nuclear reactor pressure vessel materials are subject to progressive reductions in fracture resistance in service due to neutron irradiation. Current technology is inadequate to quantitatively predict radiation embrittlement for all vessel materials and their metallurgical variations for the neutron fluences of interest. In addition a relationship between apparent notch ductility and fracture toughness in the irradiated condition is needed to evolve more quantitative projections of structural integrity. The NRL-EPRI RP886-2 Program was formulated to advance both areas for the benefit of reactor vessel design and operation. A primary objective is development of a high-quality data base for the evaluation of current radiation-embrittlement projection methods and the development of improved methods. This report documents program highlights and research results for CY 1978. Principal results include completion of half of the scheduled program irradiation experiments as well as commencement of postirradiation notch ductility and fracture toughness testing. The facility and procedures developed for J-R curve testing of irradiated compact toughness specimens are described. Postirradiation results are presented for four experiments which contained A533-B steel plate material.
- Research Organization:
- Naval Research Lab., Washington, DC (USA)
- OSTI ID:
- 5504673
- Report Number(s):
- AD-A-075012/5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
BARYONS
CONTAINERS
DAMAGE
DATA
DUCTILITY
ELEMENTARY PARTICLES
EMBRITTLEMENT
FABRICATION
FERMIONS
FORGING
FRACTURE PROPERTIES
HADRONS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
NEUTRONS
NOTCHES
NUCLEONS
PLATES
PRESSURE VESSELS
REACTOR MATERIALS
STEELS
TENSILE PROPERTIES
TESTING
WELDED JOINTS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
BARYONS
CONTAINERS
DAMAGE
DATA
DUCTILITY
ELEMENTARY PARTICLES
EMBRITTLEMENT
FABRICATION
FERMIONS
FORGING
FRACTURE PROPERTIES
HADRONS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
NEUTRONS
NOTCHES
NUCLEONS
PLATES
PRESSURE VESSELS
REACTOR MATERIALS
STEELS
TENSILE PROPERTIES
TESTING
WELDED JOINTS