Barbara has more than 20 years experience in dealing with rotating equipment in the Power Generation and Oil & Gas sectors, and has carried out multiple Operations and Project Management roles during this time. Barbara is currently responsible for the delivery of all major projects on behalf of Greenray.
The provision of system upgrades and retrofits is an important aspect to the operation of a gas turbine package or plant and is the platform to improve operational reliability and remove unscheduled downtime.
Our solutions can be tailored to the individual needs of the customer whether it is a black start solution encompassing sequencer, governor, AVR, excitation, generator protection and fuel system replacements to a relatively simple plug and play governor replacement.
Furthermore, we can also provide remote control and remote monitoring solutions through a secure gateway. This allows a condition monitoring and assessment service to be provided at low cost with rapid access to technical support often situated 1000's of KM's away.
Our latest successes have been to install complete Oil & Gas Installation upgrades, encompassing the replacement of complete station retrofits.
Generally the mature GEC Gas Turbine Control Systems are passed the stage where they can be reliably supported. Many components are obsolete, and have been for many years. The failure of one key component may lead to an extended shutdown while replacement are located and/or engineered.
Where parts are re-engineered, it can lead to ancillary issues, such as complying with Management of Change processes at many sites.
In addition, the availability of clients needs to be considered, as there is a declining pool of resources who are trained and understand the older systems.
In order to remove these risks we are able to offer Controls Upgrades based on modern PLC based platforms, that as well as remove obsolescence issues, offer the following benefits:
Since the GEC Fleet was manufactured, there have been significant advances in fuel throttling technologies, both in valve, actuation and Control.
We have adapted the popular Siemens integrated gas fuel valve upgrade to suit installed GEC packages. The system is made up of three primary components, the valve, actuator and electronic control unit.
Our most recent development is the Vari-Flow Liquid Fuel System Upgrade. Many older gas turbine have relatively complicated fuel delivery system incorporating Throttle Valves and Spillback Systems. Additionally, older systems invariably suffer from calibration drift leading to issues with start-up and load modulation.
The Vari-Flow Fuel Delivery System replaces the traditional Fuel Control Valve with a Positive Displacement Pump, driven and controlled by a Variable Speed Motor (AC or DC powered).
We are also able to supply upgrades to the original Phase 1 and 1.5 Lubricating Oil Console supplied with GEC packaged Avon Turbines.
Originally, GEC Packaged Gas Turbines contained many instrumentation switches, which was a common standard at the time.
We offer to change many of these switches in favour of modern transmitters. Normally this is carried out at the same time as Control System Upgrades. Upgrading the turbine package instrumentation has the following advantages:
We are actively involved in the relocation and refurbishment of existing gas turbine packages.
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.
We work anywhere in the world, and our field engineer's travel all over the globe to carry out our services.
Although we're adept at solving problems, we prefer to prevent them through regular servicing, which highlights issues before they become a problem.
Legacy machines are in our blood and everything we do is designed to work in the best possible way with them.
We are specialists in legacy equipment services. Working with OEM Partners, we secure access to the original equipment manufacturing drawings, allowing us to re-engineer 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.
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.