Compressor failure in Marbore Engine
Compressor failure in Marbore Engine
Compressor failure in Marbore Engine
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Summary and conclusions• The reason that this cracks were not found until now is because thema<strong>in</strong>tenance policy for NDT enabled choos<strong>in</strong>g between <strong>in</strong>spection underlow magnification or fluid penetration (Zyglo) method.• From the other disks that were found with cracks, it can be concluded thatanother severe event was prevented due to this <strong>in</strong>vestigation.• From the amount of corrosion pits and the difficulty to see the coat<strong>in</strong>g itcan be concluded that the protective coat<strong>in</strong>g was damaged and was notaffective.• The probability of FOD (Foreign Object Damage) as a cause of the <strong>failure</strong>was ruled out.– There were no signs for FOD over the sta<strong>in</strong>less steel disk– Other disks were found cracked (with smaller cracks).24