ASM Failure Analysis Case Histories: Failure Modes and Mechanisms
Failure of a Main Steam Line of a Power-Generating Station
-
Published:2019
Abstract
A main steam pipe was found to be leaking due to a large circumferential crack in a pipe-to-fitting weld in one of two steam leads between the superheater outlet nozzles and the turbine stop valves (a line made of SA335-P22 material). The main crack surface was found to be rough, oriented about normal to the outside surface, and had a dark oxidized appearance. The cracking was found to be predominantly intergranular. Distinct shiny bands that etched slower than the remainder of the sample at the top of each individual weld bead were revealed by microscopic examination. These bands were...
Sign in
ASM members
Member Sign InFailure of a Main Steam Line of a Power-Generating Station, ASM Failure Analysis Case Histories: Failure Modes and Mechanisms, ASM International, 2019, https://doi.org/10.31399/asm.fach.modes.c0048846
Download citation file:
Understanding the Basics Collection
8-Volume Digital Library Exclusive
The Understanding the Basics Collection provides comprehensive coverage of critical topics in metallurgy. These introductory guides present critical information on key topics related to materials processing, performance, and evaluation.
