Thermal shock: A flange leakage cause

Flange leakage due to thermal shock is a critical issue in piping systems. This paper presents a comprehensive case study on the impact of thermal shock on flange leakage in piping systems. It explores the phenomenon where a sudden increase in operating temperature can compromise the integrity of flanged joints, leading to leakage. The study delves into the thermal response of flanges and how it can precipitate a loss of bolt loading, resulting in a decrease in gasket seating pressure. Through detailed analysis, the paper discusses the steady-state operation of flanges, temperature variations within piping systems, and the events of thermal transients. It further evaluates the effects of forced displacement on bolt stress and the subsequent impact on flange stability.