Sulzer Turbo Services 7FA/H2 Generator Considerations

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Typical installation for the 7FA CTG provides for a gravel pad below the inlet filter house. This is standard for these installations but is often the cause of major headaches for maintenance managers when it comes time to perform the first major inspection of the generator internals. Part of this plants design is that the turbine inlet housing is directly over the generator service access out to approximately 40’ and an elevation over 10’, inaccessible to mobile cranes.

Sulzers’ solution is to install a concrete pad for the engineered extraction tooling to sit; eliminating the cost and safety issues that come with a large amount of cribbing that would be the alternative. Once the pad is complete, we can install our extraction platforms. These platforms are fully self-contain ed and can be installed in approximately 2 days with only minimal cribbing to allow for leveling of the skids.

We designed our separate extraction platforms for the typical installation and for the external cooling water piping design. Once the platforms are set and leveled, 1” thick steel plates are set on top with 4” wide steel channel. These will act as the track for the mechanical screw actuators and machinery skates that will support the removal of the 80,000 pound generator field.

Once the field is removed, a temporary enclosure can be built on the deck for testing and cleaning, or additional platforms can be added in the event that the rotor needs to be transported offsite for additional testing or repairs.

With the recent addition to the group of Sulzer Dowding & Mills, Sulzer Turbo Services can also offer comprehensive evaluation and complete repair services through our global network of experts and US based workshop facilities.

Sulzer Turbo Services
11518 Old La Porte Rd, La Porte, Tex 77571
Tel: +1 (713) 567 2700 or 1 (800) 324 6540
Fax: +1 (713) 567 3830
www.sulzerts.com

   

 

 

 

 

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