Hydrogen embrittlement in power plant steels - Indian Academy of ...

434 R K Dayal and N Parvathavarthini
Figure 1. High pressure steam pipe
containing blow out window fracture
(Antonio 1993).
Figure 2. Close-up view of the window (Antonio 1993).
Figure 3. Cross-section of the boiler showing the damage
due to hydrogen (Weiss 1993).
Figure 4. Close-up view of the bulge (Weiss 1993).
Figure 5. Hydrogen-induced cracking in 9Cr–1Mo steel at HAZ / base metal boundary due to repair
welding without PWHT (Parvathavarthini 1995).