Preliminary results of international round robin on ITV-8A. [PWR; BWR]
Because of the widespread international interest in the reliability of analysis methods for ensuring the safe operation of reactor pressure vessels, the NRC asked ORNL to implement a pretest analytical round robin for the test of intermediate vessel V-8A. This vessel contained a deliberately flawed low upper shelf toughness weld, and was pressurized to the point of incipient flaw tearing instability. Following the performance of flaw sizing calculations, notch machining and fatigue sharpening by cyclic pressurization, a complete package of pretest analysis information was mailed to a distribution list of all parties indicating an interest in the round robin. Since the purpose of the round robin was to facilitate the objective evaluation of analysis methods, including the time required to implement them in a realistic engineering situation, the time provided, five weeks, was considered reasonable. Since the problem involved the ductile tearing of a flaw under elastic-plastic conditions, the analysts were asked to estimate the nominal pressure-strain curve for the vessel, the variation of flaw dimensions with pressure, and the pressure at flaw tearing instability.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6758612
- Report Number(s):
- CONF-821037-16; ON: DE83001952
- Resource Relation:
- Conference: 10. water reactor safety research information conference, Gaithersburg, MD, USA, 12 Oct 1982; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
BWR TYPE REACTORS
PRESSURE VESSELS
FAILURES
YIELD STRENGTH
PWR TYPE REACTORS
STEELS
DEFECTS
MATHEMATICAL MODELS
STRESSES
ALLOYS
CONTAINERS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210100* - Power Reactors
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Light-Water Moderated
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360103 - Metals & Alloys- Mechanical Properties