Vibration induced failures in nuclear piping systems

A survey of existing documents was conducted to ascertain the extent of pipe crack problems that have been encountered in industry that are attributable to fatigue. The work reported herein is part of a continuing study that the NRC has undertaken regarding crack growth in nuclear components. This paper documents these problems and identifies the reactor plants and the piping system in which the crack(s) occurred. The information was taken from Licensee Event Reports (LER's) from 1969 to October 1982, from Nuclear Regulatory Commission (NRC) Office of Inspection and Enforcement (IE) Bulletins, and from other licensee and vendor reports. References have been useful as background documents for this effort. (orig.)