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Damage on static package turbine foil.

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falco

Industrial
Joined
Jul 4, 2001
Messages
24
Location
SV
Good Afternoon,
During a dye penetrant examination of Static package steam turbine blades, we found out several indications on blades foil.
Indications are rounded with several diameters 4 mm-16 mm and one is located on the weld toe (16 mm). I've being looking for a std to evaluate the severity of those indications however I haven't found something that directly address dye penetrant on this type of damage
Does anybody here have experience with that kind of failure?
Will highly appreciate if anyone knows about a specific std that cover in-service inspection of turbine blades with dye penetrant
Thanks in advance, best regards
 
 http://files.engineering.com/getfile.aspx?folder=b3fc387e-2da3-46d6-9c9f-d24abd597887&file=INDICATION_IMAGE_2.jpg
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