THIRD STAGE BUCKET

PART CHARACTERISTICS
Ansaldo Thomassen P/N:
76BXT350-G002

Interchangeable with GE P/N:
314B7164G014

Kit includes:
92x buckets
Installation hardware

Base alloy:
IN738LC

Coating:
Optional

Firing temperatures:
Up to 1140°C (2084°F)

Inspection intervals:
24.000 EOH

COMPONENT HIGHLIGHTS
Operating conditions
Due to the specific design the Ansaldo Thomassen 6B third stage buckets are suitable for:

• Firing temperatures up to 1140°C (2084°F)
• Rotor speeds of 5163 rpm (PG6581)
• All gas turbine fuels

Design
The buckets are fabricated with the investment casting process and are made of the nickel base superalloy IN738LC.

The scalloped tip shroud holds two knife edge seals, equipped with cutter teeth. Cobalt base hardface material is laser welded on both sides into the Z-notches.

In the standard configuration, the buckets are not coated. Ansaldo Thomassen can advice on coating solutions for specific operating conditions. A typical coating option consists of a chromide diffusion coating applied to the gas path by means of chemical vapor deposition. This type of coating is specifically designed for resistance against hot corrosion.

The delivery includes 92 buckets and applicable installation hardware. The complete set of parts is balanced and sequenced for assembly. The results of the moment weight inspection are included in the shipment.

The buckets are fully interchangeable with GE P/N 314B7164G014, without any modification to the gas turbine.

DESIGN LIFE
The estimated life is 72.000 EOH based on Ansaldo Thomassen recommendations and after standard inspection and repair intervals.