LM2500 Gas Turbine

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LM2500 Combustion Turbine Course MILITARY SEALIFT COMMAND
o Inspect the compressor rear frame:
 Check flanges for cracks in bolt holes,
 Pads for cracks, nicks, scores, thread damage,
 Tubes for cracks, nicks, scratches, dents,
 Strut pads for cracks, nicks, scratches, dents,
 Outer casing for cracks, dents, nicks, scratches, bosses for thread damage,
hot spot discoloration.
 Casing bulges
o Inspect the turbine mid-frame exterior:
 Cracks, nicks, scores, thread damage,
 Tubes for cracks, nicks, scratches, dents,
 Outer casing for cracks, dents, nicks, scratches, bosses for thread damage,
hot spot discoloration.
 Casing bulges
 Borescope the liner and check for cracks, missing material, buckling, or
distortion.
o Inspect the power turbine stator case:
 Check the front flange for cracking at bolt holes, cracks, nicks, scores, or
scratches,
 Check the rear flange for cracking at bolt holes, cracks, nicks, scores, or
scratches.
o Inspect the turbine rear frame:
 Check the case for cracks, nicks, scores, scratches, and dents,
 Check the struts for nicks, scores, scratches, and dents,
 Check strut faring for loose or missing rivets,
 Check mounts for cracks.
o Inspect accessories for security, damage, or leakage.
o Refer to the O&M manual for tolerances to determine repair or replacement
actions.
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