Piping Stress Analysis of Safety Injection System of Typical PWR Power Reactor

摘要

This paper covers the piping stress analysis of safety injection system (SIS) of Chashma Nuclear Power Generating Station, Unit-1of electric power 325 MWe. The analysis of the safety injection system on Peps, an integrated package which contains PIPESTRESS (the program for analysis of piping) and EDITPIPE (for preprocessing and post processing), has been performed by dividing it into three lines. These lines have been modeled on Peps computer code using proper input commands. To fulfill the nuclear regulatory requirements, the analysis of safety class 1 and 2 piping has been performed using the software. Peps software has provision of stress analysis for various working conditions by defining different load cases and combination cases as described. Peps results include the determination of loads, moments and stress ratios at specific sections of the piping structure. This analysis confirms that piping system stresses are within those limits specified by the ASME code.