A Research to Determine Blast Wave Parameters

When a sudden rupture occurs in the high energy lines, ejection of inner fluid with high temperature and pressure causes jet impingement, pipe whip and jet reflection as well as blast wave with secondary damage of adjacent major components. For this matter, ANSI/ANS 58.2 standard was established to provide design concept and requirements against the postulated rupture of the high energy line. USNRC also addressed that some assumptions related to high energy line break (HELB) in the standard, so that new assessment method should be developed under the HELB condition. In this study, for the verification of major parameter which demonstrate the blast wave phenomena, an experimental apparatus has been constructed and test was conducted under a preliminary HELB condition. Subsequently, 3-dimensional numerical analysis was performed using TNT model which are widely used to simulate the blast wave. Finally, blast wave parameters were verified with comparing the experimental data and corresponding analysis results.