White paper on reactor vessel integrity requirements for Level A and B conditions. Final report
The purpose of the ASME Section XI Task Group on Reactor Vessel Integrity Requirements was to examine the ASME Code requirements for reactor vessel integrity. As a part of this effort, the historical basis of the current ASME Section 111, Appendix G limits for Plant operating criteria was revisited. With the benefit of advancing technology, the appropriateness of the existing Code requirements was reexamined. The goals of the Task Group were to: Review current regulations for material reference toughness, assumed reference flaw size and plant operating criteria, and identify areas of conservatism and potential nonconservatism. Provide recommendations for determining plant operating pressure-temperature limits while maintaining the necessary requirements to assure vessel integrity. This white paper is focused primarily on pressurized water reactors rather than boiling water reactors, although information is provided for both reactor vessel types. The white paper was prepared by the ASME Section XI, Task Group to document the basis for the current Section XI, Appendix G approach with recommendations for future Code improvements. The recommendations and conclusions provided are generic, however any application of these should be checked against plant specific considerations.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); American Society of Mechanical Engineers Section XI Task Group on Reactor Vessel Integrity Requirements (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 10132804
- Report Number(s):
- EPRI-TR-100251; ON: UN93009194
- Resource Relation:
- Other Information: PBD: Jan 1993
- Country of Publication:
- United States
- Language:
- English
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