ESSO Longford PT Overhaul | Case Studies | Greenray

As Siemens' advanced partner for services to the GEC gas turbines fleet, Greenray were engaged to overhaul the power turbine in Australia within 5 days, to align with the clients planned outage.

The Engine/Equipment

What we worked on

The power turbine was installed in a GEC manufactured AP1 gas turbine generator set.

The agreed workscope was:

  • Power turbine overhaul
  • Remove complete exhaust volute and diffuser for repairs
  • Gearbox bearing inspection and integrity evaluation
  • Re-build power turbine with new components
  • Re-build gearbox and check alignment to driven equipment

The Solution

Completion and results

The client's gas generator had suffered material ingress and had failed. The power turbine suffered subsequent damage. Greenray were called in over a Christmas period for an urgent inspection and overhaul.

The above scope was completed in the allocated time. During the overhaul it became evident that a number of non-OEM repairs were carried out that would limit the expected serviceable life to the power turbine.

Following the service, Greenray's engineers reported on a suggested operating regime that would take the engine through to the next scheduled outage, to enable time to plan for a more extensive overhaul.

About Greenray

Bringing you expertise right from the heart of the industry

As a significant player in the water and energy industries, we have an active role in the service, maintenance and overhaul of turbo machinery. Our services include plant relocation and installation, control system retrofits and rehabilitation projects, workshop services and on-site overhauls, component repair and supplying spare parts and technical services.

Why work with us ?

Choosing Greenray

At Greenray, we strive to continually develop our capabilities in order to provide an unrivalled service. We perform our service capabilities in conjunction with OEM partners to provide the most comprehensive service to our customers.

International services

We work anywhere in the world, and our field engineer's travel all over the globe to carry out our services.

Insider knowledge

We are specialists in legacy equipment services. Working with OEM Partners, we secure access to the original equipment manufacturing drawings, allowing us to reengineer in the most sympathetic, effective way, using the right materials and with the knowledge of the machine history.

We work to understand the history of your machine, from its initial design right through to each new component and specification. This helps us to source the correct parts and adapt them accordingly.

Unrivalled expertise

Our people are experts and they're all our own. We're extremely proud of our field engineer's pedigree, with expertise ranging from working in difficult offshore environments through to land power generation.

A proud history

Legacy machines are in our blood and everything we do is designed to work in the best possible way with them.

Preventing problems

Although we're adept at solving problems, we prefer to prevent them through regular servicing, which highlights issues before they become a problem.

Case Studies

Multi Platform Service Contract

Multi Platform Service Contract

Offshore Servicing

As the OEM for the former GEC gas turbine fleet, Greenray currently operate a number of service contracts for engines located offshore UK.

Offshore Controls Upgrade

Offshore Controls Upgrade

North Sea Oil & Gas

As a Siemens advanced business partner for the GEC gas turbine fleet, Greenray were contracted to upgrade control and fuel systems Avon generator sets located offshore UK.

ESSO Longford PT Overhaul

ESSO Longford PT Overhaul

Emergency On-site overhaul

As Siemens' advanced partner for services to the GEC gas turbines fleet, Greenray were engaged to overhaul the power turbine in Australia within 5 days, to align with the clients planned outage.

Offshore Integrated Service

Offshore Integrated Service

Offshore Servicing

As the OEM for the former GEC gas turbine fleet, Greenray have recently won a 3 year contract to service three EAS1 gas turbines.

Blackstart Capabilities

Blackstart Capabilities

Upgrading GEC Generators

Upgrades of gas turbine & generator control and fuel systems for a 2 off 60 MW black start, standby sets located at a Hong Kong based power station requiring  an upgrade to their black start capabilities.

EA2 On-Site Power Turbine Overhaul

EA2 On-Site Power Turbine Overhaul

A new lease of life

A field engineer was required at a power station in Northern Ireland at very short notice to inspect a power turbine (PT) following an Avon failure. The PT was found to be heavily damaged requiring a strip down of the gas path to ascertain the full extent.

Denmark Turbine Relocation

Denmark Turbine Relocation

Relocation and Upgrade

The client had relocated a 25 MW generator set to Denmark. Due to the energy supply balance in Denmark, in particular renewable energy versus other fuels, there are times when quick start, generators are required to supplement the power generated by wind.

Castle Peak Relocation

Castle Peak Relocation

Greenray support & expertise

The client had relocated two EM610 generator sets from Hong Kong to Indonesia, in order to provide much needed power and utilise available gas on a quick turn around.