Telic Engineering / Engines / LM2500

LM2500 controls and field service. Offshore is our normal.

Commissioning, inspections, troubleshooting and DLE mapping on the LM2500, LM2500+ and LM2500+G4, SAC and DLE, on Woodward and GE control systems. Most of it offshore, on platforms and FPSOs.

Request availability See the LM2500 jobs
LM2500: where we work on the engine Section drawing of an LM2500 gas turbine: 16-stage compressor, combustor, 2-stage high pressure turbine and 6-stage power turbine, with six numbered points: VSV system, T48/T54 thermocouples, vibration, speed pickups, fuel metering and the control system. HPC COMB HPT PT EXHAUST 01VSV SYSTEMactuators, feedback, schedule 02T48 / T54PT inlet thermocouples 03VIBRATIONaccelerometers, charge amps 04SPEEDNGG, NPT and overspeed 05FUEL METERINGgas, liquid, dual fuel, DLE 06CONTROL SYSTEMMicroNet, Mark VI and VIe
42
LM2500 assignments since 2014
65+
units worked on
35
offshore, 9 on FPSOs
2026
latest job
Sheet 01

Where we work on the LM2500

The six places on the LM2500 where most of our work happens, numbered as in the drawing at the top of the page.

  1. 01VSV system. The VSV schedule keeps the compressor out of stall. We stroke the actuators end to end, check the feedback on both sides and compare the schedule with the control software, not with last year's report.
  2. 02T48/T54 thermocouples. Power turbine inlet temperature, T48 or T54 depending on the model, is the limit that holds the engine back or trips it. Every thermocouple and the harness get checked, and we look at the spread, not only the average.
  3. 03Vibration. Accelerometers and charge amplifiers on the compressor and turbine frames. We test the whole monitoring chain with charge injection; the calculator we use for that is on our Tools page.
  4. 04Speed and overspeed. NGG and NPT pickups: gap, signal on crank, wiring. The overspeed trip is tested through the protection system, not assumed.
  5. 05Fuel metering. Gas, liquid and dual fuel, SAC and DLE. Valve calibration, stroke checks, fuel transfer tuning and water injection for NOx.
  6. 06Control system. Woodward MicroNet, MicroNet Plus, NetCon and Atlas, GE Mark VI and Mark VIe. Logic and sequence changes, GAP and HMI updates, datalogs read and explained.
Sheet 02

What we do on the LM2500

By engineers who have done it before. Every job comes with a short daily report and paperwork you can use.

Commissioning & start-up

New packages and control upgrades: loop checks, functional tests, first fire and load tests. Also the start-up after a gas generator exchange.

4k and 8k inspections

The controls and instrumentation scope of 4k, 8k and annual inspections, including safety-critical instrumentation. Calibration sheets and a service report before we leave.

Troubleshooting

Trips, failed starts, fuel transfer problems, T48/T54 spread, VSV faults. We read the datalogs first and find the cause, rather than swapping parts until it works.

DLE mapping

Mapping and combustion optimisation on LM2500 DLE, single and dual fuel, by our own experienced mapping engineers.

Control upgrades

NetCon to MicroNet and MicroNet Plus upgrades, commissioned on a running asset within the shutdown window.

Operations support

Longer campaigns of maintenance and operations support, also on FPSOs with several units running.

Sheet 03

Variants and control systems

What we have actually worked on. If your LM2500 package is not on it, ask.

Engines
LM2500 base, LM2500+ and LM2500+G4 · SAC and DLE · single and dual fuel
Control systems
Woodward MicroNet, MicroNet Plus, NetCon 5000, Atlas · GE Mark VI, Mark VIe · GE PAC RX3i
Fuel systems
Woodward gas and liquid metering valves · DLE fuel metering with Flex500 · dual-fuel calibration and fuel transfer tuning · water injection for NOx
Where
Offshore: Norway, UK, Denmark, Nigeria (incl. FPSOs). Onshore: UK, France, South Korea, Germany, Malaysia, Italy.
In the track record
42 assignments, 2014–2026, about 65 units
Sheet 04

LM2500 jobs

Taken from our track record, newest first. No client or site names here; ask and we tell you, under NDA if needed.

PeriodWorkEquipmentSystemsLocation
Aug 2026DLE mapping1× gas turbineLM2500 DLEOffshore Norway
May 20268k inspection, dual-fuel DLE mapping1× gas turbineLM2500 DLEOffshore Norway, FPSO
Mar–Apr 2026Pre-commissioning, combustion optimisationGas turbinesLM2500 DLEOffshore Norway, FPSO
Jan–Feb 2026Annual inspections, DLE mapping1× gas turbineLM2500 DLE, MicroNetUK
Oct 20258k inspection, safety-critical instrumentation1× gas turbineLM2500+G4, Mark VIeOffshore UK
May–Jul 2025Commissioning, production support2× gas turbinesLM2500, MicroNetOffshore Norway
Feb–Apr 20254k inspection, engine exchange support, start-up1× gas turbineLM2500+G4, Mark VIOffshore UK
Nov–Dec 2024Troubleshooting1× gas turbineLM2500, MicroNetOffshore Denmark
Oct 2024Troubleshooting1× gas turbineLM2500, Mark VIeFrance
Apr–May 2024Package inspections, instrumentation2× gas turbinesLM2500, MicroNetOffshore UK
Earlier LM2500 work32 assignments
PeriodWorkEquipmentSystemsLocation
Mar–Apr 20248k inspection, instrumentation1× gas turbineLM2500, MicroNetOffshore UK
Nov 2023Commissioning, start-up after GG exchange1× gas turbineLM2500, NetCon 5000UK
Oct 2023Control upgrade commissioning1× gas turbineLM2500, MicroNetOffshore Norway
Aug 20234k inspection, start-up1× gas turbineLM2500+G4, Mark VIOffshore UK
Jul 20238k inspection, safety-critical instrumentation, start-up1× gas turbineLM2500+G4, Mark VIOffshore UK
Feb 2023Troubleshooting1× gas turbineLM2500, MicroNetOffshore UK
Dec 2022–Apr 2023Commissioning, control upgrade3× gas turbinesLM2500, MicroNet PlusOffshore Norway
Nov 2022Package instrument inspections1× gas turbineLM2500, MicroNetOffshore UK
Sep 2022Dual-fuel calibrations, start-up1× gas turbineLM2500, AtlasOffshore Denmark
Jul 2022Control health check1× gas turbineLM2500+G4, Mark VIeOffshore UK
Nov 20214k instrumentation inspection1× gas turbineLM2500+G4, Mark VIOffshore UK
Feb–Apr 2021Commissioning fuel metering system, DLE2× gas turbinesLM2500 DLE, Flex500, Mark VIeSouth Korea
Nov 2020Cold commissioning1× gas turbineLM2500, MicroNetGermany
Sep–Oct 20204k inspection, instrumentation1× gas turbineLM2500+G4, Mark VIOffshore UK
Aug 2020Troubleshooting1× gas turbineLM2500+G4, Mark VIeOffshore UK
Jun–Oct 2020Maintenance, operations support3× gas turbinesLM2500+G4, Mark VIOffshore UK
Feb–Mar 2020Troubleshooting1× gas turbineLM2500, AtlasMalaysia
Oct–Nov 2019Troubleshooting, start-up2× gas turbinesLM2500, MicroNetOffshore Nigeria, FPSO
Jul–Aug 2019Field service1× gas turbineLM2500+G4, Mark VIOffshore UK
Jun 2019Field service1× gas turbineLM2500+G4, Mark VIOffshore UK
May 2019Wiring checks, troubleshooting1× gas turbineLM2500, MicroNetOffshore Norway, FPSO
Dec 2018Troubleshooting1× gas turbineLM2500, MicroNetOffshore Norway, FPSO
Oct–Nov 20188k inspection, start-up1× gas turbineLM2500+G4, Mark VIOffshore UK
Aug–Sep 2018Maintenance, operations support6× gas turbinesLM2500, MicroNetOffshore Nigeria, FPSO
Apr 2018Maintenance, operations support6× gas turbinesLM2500, MicroNetOffshore Nigeria, FPSO
Jan–Feb 2018Maintenance, operations support6× gas turbinesLM2500, MicroNetOffshore Nigeria, FPSO
Sep–Dec 2017Commissioning manager1× gas turbineLM2500, RX3iItaly
Mar–Apr 2017Field service1× gas turbineLM2500+G4, MicroNetOffshore UK, FPSO
May 2015Troubleshooting, fuel transfer tuning, software updates1× gas turbineLM2500, MicroNetOffshore Norway
Nov 2014Water injection, NOx reduction support1× gas turbineLM2500, MicroNetOffshore Norway
Sep 2014Water injection, NOx reduction support1× gas turbineLM2500, MicroNetOffshore Norway
Mar 2014Field service1× gas turbineLM2500, MicroNetOffshore Norway
Sheet 05

Questions we get

Do you work for the OEM or for the operator?

Both. Much of our LM2500 work is for OEMs, packagers and service providers, as their field engineer. We also work directly for operators and owners. Where an OEM service contract is in place, we work alongside the OEM team, not around it.

Woodward or GE controls?

Both. We are experts on Woodward and GE control systems. On the LM2500 that means MicroNet, MicroNet Plus, NetCon and Atlas as well as Mark VI and Mark VIe.

Do you do DLE mapping on the LM2500?

Yes, with our own experienced mapping engineers: mapping after an engine exchange, combustion optimisation and dual-fuel mapping, offshore and onshore.

Do you supply parts?

Hard-to-find and obsolete control and instrumentation parts for LM2500 packages, sourced through our supplier network, checked for compatibility, installed and tested on site.

How fast can you get an engineer to site?

Send the start date, location and scope and you get availability and an estimate the same working day. Offshore certificates (OPITO BOSIET/FOET, MIST, offshore medical) are kept current, so paperwork is not what holds you up.

Can you send more than one engineer?

Yes. For campaigns or several units at once we add contractors from our own network, under our agreement, our insurance and our reporting. How resource supply works.

Sheet 06

Read on

LM2500 inspection, start-up, or a trip nobody can explain?

Send the start date, estimated duration, scope, systems on site and location. You get availability and an estimate the same working day.

Request availability

Question from purchasing or compliance? Company details, insurance, HSE and quality policies and procedures are on the Working with Telic page.

Remco Petersen
Telic Engineering B.V.
Markenplein 24, 1011 MV Amsterdam
The Netherlands
remco.petersen@telic-engineering.nl
+31 6 51345316
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