Development of a Plan for the Assessment of Degraded Nuclear Piping by Experimentation and Tearing Instability Fracture Mechanics Analysis. Volume 1. Main Report.

摘要

Full scale experimental testing to determine the capacity of cracked pipes and nozzles to withstand normal and postulated accident loads and to demonstrate the ability to accurately predict this capacity analytically is an important part of NRC's overall effort to evaluate the integrity of cracked piping and define licensing criteria to ensure that adequate margins of safety for piping systems are maintained during operation. Recognizing the need for such testing, NRC initiated, in September 1981, a study at Battelle Columbus Laboratories (BCL) to plan a comprehensive experimental piping program. The results of this program, referred to as the Phase I Degraded Piping Program, are presented in this report.