Testing and analysis of feedwater piping at Indian Point Unit 1. Volume 1. Damping and frequency. Final report

Beginning in 1978, an extensive series of in-situ dynamic tests of a feedwater piping at Consolidated Edison Company of New York's Indian Point Unit 1 Nuclear Power Station was conducted. A large data base was generated for in-depth investigation of dynamic characteristics and response behavior of this particular piping system. The goal of this research is to assess and quantify current piping-design conservatism, as well as to qualify more realistic and efficient nuclear-piping design methodologies and procedures. Three distinct test phases are reported herein: in the first phase, the piping was tested in its as-built configuration; in the second phase, the piping insulation was removed; and in the third phase, the piping was refitted with modern supports consisting of struts and snubbers. The research results are organized in two volumes where Volume 1 concentrates on frequency and damping evaluation and Volume 2 on pipe-support interaction and stress distribution.