Every major frame.
Every spec we've seen.
We blast, CO₂-clean, and inspect turbines built by GE, Westinghouse, Siemens, Mitsubishi (MHI), Alstom, Hitachi, Ansaldo, and Solar — to the OEM service bulletin and your plant spec, not a generic procedure. Below is the full list of frames we've serviced across the U.S. power generation fleet.
We work to the bulletin, not a generic procedure.
Every major OEM publishes service bulletins, technical instructions, and inspection/cleaning procedures specific to each frame in their fleet. The ones that govern blast cleaning and NDT are detailed: which media is acceptable on which substrate, what surface profile is required where, what acceptance criteria the post-blast inspection has to meet. Generic blast procedures don't satisfy the warranty conditions on a Tier-1 OEM Long-Term Service Agreement (LTSA).
Our crew leads have run scopes on every major frame in the U.S. power generation fleet. The OEM compatibility list below is not a marketing claim — it's the recurring work. If your frame is in the list, we have done the procedure recently. If it isn't, call: most uncommon platforms still have analogous procedures we know.
Where the work gets nuanced is on the heritage assets. Westinghouse 501 frames built in the 1970s do not have the same documentation hygiene as new Mitsubishi M501JAC units. We carry both extremes and everything between — the playbook is different for each, but the underlying competency is the same: read the spec, load the right media, work the surface to the standard.
General Electric (GE)
GE is the largest installed turbine OEM in the U.S. power fleet — gas, steam, and combined-cycle. We service the full GE installed base from 1970s-era Frame 5s through the current 9HA H-class units.
Heavy-duty gas turbines. Frame 3, Frame 5 (MS5001), Frame 6 (MS6001), Frame 6FA, Frame 7E (MS7001E), Frame 7EA, Frame 7FA (MS7001FA — the workhorse of the U.S. combined-cycle fleet), Frame 7FB, Frame 7HA, Frame 9E, Frame 9F, Frame 9FA, Frame 9HA. Hot-gas-path inspections (HGPI), combustor inspections (CI), and major inspections (MI) on all platforms.
Steam turbines. Full GE steam fleet — D-series, A-series, T-series — across fossil, nuclear, and combined-cycle bottoming-cycle applications. HP, IP, and LP rotor work; casing scopes; valve and steam-chest blasting.
Aeroderivatives. LM2500, LM6000, LM2500+ G4 — peaking and industrial units, including LM6000 SPRINT installations across the gulf and southwest IPP fleet.
Generator side. GE-built generators paired with GE turbines: 7FH2, 9FH2 hydrogen-cooled units, smaller air-cooled machines on aeroderivative installations. Generator stator and field cleaning typically performed with CO₂ dry-ice blasting; rotor and structural NDT on the bundled scope.
Spec landscape. Work performed under GE TIL (Technical Information Letters) and GER (GE Energy Reference) procedures applicable to each frame. We carry the current revision sets and align our procedures to whichever LTSA structure governs your asset.
Westinghouse (W501 fleet)
The Westinghouse 501 platform is the heritage 60Hz heavy-duty gas turbine across much of the U.S. IPP and IOU fleet. The frames passed through Mitsubishi-Westinghouse (MWHI) and Mitsubishi Power, but the installed base still trades as "Westinghouse" in the field.
Heavy-duty gas turbines. 501 (original platform), 501D, 501D5, 501D5A, 501F (the F-class workhorse — common across Texas, gulf coast, and southeast IPPs), 501G, 501J. Many of these units are now branded under Mitsubishi Power but continue to be specified, scoped, and inspected as "501-series" in the field.
Steam turbines. Westinghouse steam product line carried across into Siemens after the 1998 acquisition of Westinghouse Power Generation. We service the full heritage steam fleet — TC4F, TC2F, TC6F LP-end configurations across nuclear, fossil, and combined-cycle bottoming-cycle applications.
Generator side. Westinghouse-built generators on legacy fossil units — older designs that pre-date current cleaning specifications. CO₂ blasting is usually the right method for the older end-winding insulation systems where abrasive risk is unacceptable.
Spec landscape. Westinghouse instruction books and bulletins are the historical reference; current Mitsubishi Power TILs and service bulletins govern any unit under modern LTSA. We work to whichever spec set applies to your asset.
Siemens (now Siemens Energy)
Siemens (Siemens Energy as of 2020) carries the European F-class and H-class heavy-duty gas turbine product line, plus the heritage Westinghouse steam product line acquired in 1998.
Heavy-duty gas turbines (50Hz). SGT5-2000E, SGT5-4000F (the Siemens F-class workhorse worldwide), SGT5-8000H (the original H-class). Increasingly common on U.S. soil through the LM6000-replacement and combined-cycle build-out.
Heavy-duty gas turbines (60Hz). SGT6-2000E, SGT6-5000F (the dominant Siemens 60Hz frame in the U.S. combined-cycle fleet), SGT6-8000H. Hot-gas-path inspections, combustor work, and major inspections on the full SGT6 fleet.
Steam turbines. SST-product line across new and heritage Westinghouse fleet. SST-9000, SST-6000, SST-5000, SST-3000 series — fossil, nuclear, and combined-cycle.
Generator side. Siemens-built generators on F-class and H-class installations. Typically hydrogen-cooled, large-frame machines requiring careful cleaning specification — CO₂ blasting on stators and end-windings during major outages.
Spec landscape. Work performed under Siemens Energy service bulletins and TILs. F-class fleet has tighter procedural documentation than the heritage Westinghouse units; we maintain procedures aligned to both.
Mitsubishi (MHI · Mitsubishi Power)
Mitsubishi (Mitsubishi Power, formerly Mitsubishi Hitachi Power Systems and originally Mitsubishi Heavy Industries) builds the largest gas turbine frame in service in the world — the M501JAC. The M501 product line is increasingly common across new U.S. combined-cycle installations.
Heavy-duty gas turbines (60Hz). M501F, M501G, M501G1, M501J, M501JAC (the largest 60Hz frame in service — 574 MW gross combined-cycle output on a single shaft). Increasingly common on Texas and Florida combined-cycle build-outs.
Heavy-duty gas turbines (50Hz). M701F, M701G, M701J, M701JAC. Less common on U.S. soil but present at certain export and naval-base installations.
Steam turbines. Mitsubishi steam product line across nuclear (Toshiba and MHI co-developments), large fossil units, and combined-cycle bottoming-cycle. Tandem-compound and cross-compound configurations.
Generator side. Mitsubishi-built generators paired with M501J/JAC units — among the largest generators in the world, hydrogen-cooled, requiring specialized cleaning procedures. CO₂ blasting is the standard cleaning method for the high-voltage stator winding systems on these machines.
Spec landscape. Work performed under Mitsubishi Power TILs and current service bulletins. The J/JAC fleet has the most rigorous documentation in the heavy-duty gas turbine market — we align procedures to the latest revision sets.
Alstom (now GE Power)
Alstom's heavy-duty gas turbine product line — the GT24 (60Hz) and GT26 (50Hz) sequential-combustion frames — was acquired by GE in 2015. The fleet still operates and trades as "Alstom" in the field, with parts and service flowing through GE Power.
Heavy-duty gas turbines. GT24 (60Hz) and GT26 (50Hz). The sequential-combustion architecture is unique in the heavy-duty gas turbine fleet — different inspection scopes, different combustor work, and different acceptance criteria than the F-class single-combustion frames.
Steam turbines. Alstom STF-100, STF-60 product line carried into GE Power. Common on European-built combined-cycle units in service in the U.S. Specific-platform documentation maintained.
Generator side. Alstom-built generators on legacy combined-cycle installations. Bus and end-winding cleaning typically with CO₂; stator core inspection on the bundled NDT scope.
Spec landscape. Heritage Alstom service bulletins (now under GE Power) govern most outage work. We carry the current GE Power references for the GT24/GT26 fleet.
Hitachi · Ansaldo · Solar · and the rest.
The frames below are smaller fleets in the U.S. power generation footprint, but every one of them is in service somewhere and needs the same work as the big four OEMs.
Hitachi
H-25, H-80 frames. Industrial cogeneration applications. Heritage Babcock-Hitachi steam units on legacy fossil and chemical plant installations.
Ansaldo Energia
AE94.3A heavy-duty gas turbine. Heritage Italian build, increasing presence in North American repowering projects.
Solar Turbines
Mars 100, Titan 130/250, Centaur 40/50 industrial gas turbines. Common on cogeneration, oil & gas processing, and pipeline compression applications.
Toshiba
Toshiba steam turbines on nuclear and large-frame fossil applications. Heritage MHI-Toshiba co-developments on certain combined-cycle plants.
BHEL · Fuji · Others
Bharat Heavy Electricals (BHEL), Fuji Electric, and other international OEMs with fleet presence on U.S. industrial and IPP installations. Procedures aligned to OEM service references where available, plant spec where not.
Aeroderivatives
GE LM2500, LM2500+, LM6000, LM6000 SPRINT, LMS100. Pratt & Whitney FT8. Rolls-Royce Avon and RB211 industrial. Peaking and pipeline applications.
If your frame is not listed, call. The list above is the recurring work — we have run scopes on every major frame in the North American fleet at least once. (832) 586-2607 · 24/7 dispatch.
OEM-spec work is the only kind worth bidding.
If your unit is under an LTSA and the blast contractor uses a generic procedure, you have an LTSA conformance problem. If your unit is post-LTSA and the blast contractor doesn't read the bulletin, you have a future warranty problem. Every blast scope here is written to the spec — this is what that means in practice.
Frame on the books? Let's get to work.
Tell us the frame, the outage window, and the spec set governing your asset. Quote written same-day. Emergency outage line monitored 24/7 by an American crew based in Brookhaven, Mississippi.