NGSL wins a contract from NTPC of value @ 167.63 MINR for RLA/CA along with Stress Analysis of Critical Piping System for Farakka (3×210 MW) units, Unchahar (2×210 MW) units & Dadri (4×210 MW) units. The objective of this study is to analyse the critical issues of the critical piping systems and take preventive measures to enhance life and avoid failures.