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Fish-mouth rupture

ST Overheat CNL10a

ST Overheat CNL10a1

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Comments

Caused when steam flow is blocked or severely restricted. Lack of cooling leads to tensile rupture of tube.

Issue Type:

Cracking » Not in or near a weld

Locations:

Reheater, Superheater

Boiler Type:

Industry:

Electric Utility

Mechanism:

Short-Term Overheat

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Fish-mouth rupture