PowerGen Flange to Flange Special Edition

“ Not just Power…People too!” POWER CONNECTION SPECIAL EDITION Flange to Flange Inside this issue: 06 Commemoration 16 Energy Future - of the F2F project PowerGen looks 02 The Journey of ahead 1300 steps

General Manager GENERAL MANAGER’SSurindranath Ramsingh COMMENTARY In the 1970s, the casual observer would have noted the ubiquity of natural gas flares on T&T’s landscape. The orange flames were a near- constant reminder of the abundance of the fossil fuel. At times, it was almost being thrown away. PowerGen operates in a vastly different environment in 2018. Our fuel is brought from offshore at greater cost and production levels have fallen, while demand has continued to rise. The market cannot be satisfied. For PowerGen, this means one thing: We must use our fuel more efficiently, by re-engineering our electricity generation with modern turbines and keeping an eye on the possibilities for renewables. In this issue of the PowerGen Newsletter, you will hear from Daniel Jacob, who supervised the Flange to Flange turbine-upgrade project at our Penal Power Station. In 2014 as the then Plant Manager at Penal, I saw the need to embark on a project to upgrade the combined cycle plant at Penal to put it in the generation landscape of Trinidad and Tobago foranother 40 years. After much research and analysis, I was able to convince the then General Manager Mr. Fitzroy Harewood and the board to approve the project. Once approved, I led the negotiations with GE to conclude contracts to execute the project. In 2015 when I assumed responsibilities of General Manager, I handed over the project to Mr. Daniel Jacob. Daniel headed the team – comprised of 98% local labour – that transported and installed the two massive 100-tonne General Electric gas turbines in early 2016. In the two years since, the combined- cycle units have exceeded our expectations in terms of heat rate efficiency, using less than 92% of the fuel needed by their aging, simple-cycle predecessors. The project has placed Penal in the generation mix for at least another 40 years.

The old turbines were installed at a time of Table of Contentsabundant gas, when the imperative of ‘Power now’trumped the need for efficiency. Today, combined 02 06cycle turbines offer the obvious benefit of puttingwaste heat to good use by using it to produce THE JOURNEY OF STAKEHOLDERmore power. 1300 STEPS PERSPECTIVESThe Point Lisas Power Plant, from where I write this 10 13today, should follow Penal into the realm of greaterefficiency. Our turbines could be upgraded from DEPARTURE & LANDING & ARRIVALsimple cycle to combined cycle, or even combined INTRANSITheat and power. That is where we see ourselves 16going in the not-too-distant future. 14The transformation of the Point Lisas Plant will be FINAL STEPS ENERGY FUTUREcritical because of our strategic importance as thesole power producer on the country’s largest Creditsindustrial estate. Our proximity to the load makes usthe ideal location for generation expansion, upgrade, Photography and improved efficiency. Daniel Jacob Ravi SookrajRecently, the Ministry of Energy and Energy Larry HajarysinghIndustries requested Expressions of Interest in Editor renewable energy production. Aware of T&T’s Francois Ottleycommitment to produce 10% of its electricity fromrenewables by 2021, PowerGen extended its interest. Graphic DesignWe now await a Request for Proposals, which will & Layout tell us what size of renewable project the Tricia Dukhie forGovernment is looking for, as well as its likely Virtually Yours T&T Ltd.location. There can be no project more gas-efficientthan the one that uses none at all.Clean energy advocates lament T&T’s tardiness inintroducing renewables into our energy mix.Neighbours such as Curaçao have already adoptedwind and solar energy, and the Cayman Islandscommissioned a 5 megawatt solar farm a coupleyears back. They aren’t alone – the islands of theEastern Caribbean have already acknowledged thepotential of geothermal energy and are moving toharness it.The silver lining behind local delay on renewableshas been the development and maturation oftechnology. When we do get around to introducingalternative energy, we won’t be the guinea pigs, andcapital costs will have fallen.A proposal was recently put forward suggestingthe introduction of tax relief for efficient powergeneration. PowerGen would certainly welcomethe incentive. In the meantime, we are taking ourown strides toward more productive use of alimited natural resource by embracing the bestavailable technology. PAGE 1

Project Lead, Daniel Jacob escorting THE the units by walking with his trusted “Moses staff” during a light moment JOURNEY along the journey. OF1300 STEPS The Flange to Flange story as told by Daniel Jacob - Project LeadPAGE 2

Dawn to dusk, sunrise to sunset, each High temperature, high velocity air is the primary powerday’s new horizon bringing us closer to source as this is what causes the turbine to spin. The highour destination. Daniel Jacob like a energy high temperature air rushes through the combustor“Trini Moses”, staff in hand leading and transition duct to the turbine causing the turbinethe way to the promise of completion. blades to turn. But we are not done yet, as the air exits theThirteen hundred intricate steps with a turbine it is directed through the Heat Recovery Steamtechnical “tribe” fully committed to this Generator (HRSG) to extract even more thermal energy andpreviously uncharted journey, and he, convert to steam which in turn runs the steam turbine. Thekeeping watch to ensure that they took whole process ensures that the energy extraction process iseach step precisely, safely and on time. optimized. The Flange-to-Flange (F2F) project is the 2017 complete upgrade of the two gas turbine units at the Penal Power Station. This replaces the original units which had been in operation for over 30 years.The F2F Task Daniel Jacob describes it as “similar to taking out the engine of a car and replacing it. Basically unbolting fromThe task of the Flange-to-Flange (F2F) upgrade of our turbine the compressor inlet and turbine outlet ends and installingwas not just a technical operation, it was a coming together the new machine engineered to fit exact dimensions. Thisof the PowerGen family to give new life to our old familiar skillful modification circumvents the acquisition of a brandPenal Combined Cycle plant; to stretch the limits of existing new unit. The cost savings are significant when compared totechnology; to challenge GE to set a “first” for itself having to purchase two new complete generating units.”and PowerGen. These replaced turbines were 30 years old and close to theA gas turbine’s purpose is to transform the energy of end of their useful life cycle. With significant life left in theatmospheric compressed air and natural gas fuel into generator, HRSG and auxiliaries, the F2F project is a costmechanical energy that causes a generator to turn at effective solution for PowerGen. Instead of waiting forhigh speed. The moving generator in turn transforms the the equipment to deplete, PowerGen decided to replacemechanical energy into electricity. In gas-turbine plants, the engine only and thereby prolong the unit for anotherthis combination of generator and turbine is called a 30-35 years.generating unit. PAGE 3

A Flange-to-Flange is simply put, a mechanical with additional steam from the Heat Recoveryconnection. The machines changed are similar Steam Generator (HRSG), previously wasted steamto those found in a jet aircraft. The objective was is captured and creates additional electricity andto disconnect the input and output connection improved efficiency.flanges, remove the old engine and “exchange”it for a new one. While it may seem simple Mr. Ramsingh is particularly proud of theenough, it involved significant renewing of the work team which was 100% local staff alongfoundation sole plates, modification of existing with two GE staff providing oversight – Fieldpiping and installation of new piping and field Engineer, Rafael Corber and GE Consultant,monitoring equipment to replace the 30 year old Darin Weatherford. “It’s a newer designlegacy ones. machine and the manufacturer has learned and improved from this in having to makeThis was not a turnkey operation. PowerGen adjustments that were specific to theapproached their supplier GE with this novel project.”approach to a total replacement. For GE, whichhas had a long history with PowerGen, this was On the Trinidad side led by Project Leada first for the manufacturer on a machine this Daniel Jacob, were:old. It was the first Frame 7E to 7EA conversionas well as it is the first ever GE Frame 7EA Pream Naidoo Plant ManagerF2F Upgrade outside of the USA. Even though Rawle Frank Project Managerin terms of scale it is small, it provides a new Jim Leung Chee Supply Chain Managerreference point for GE and serves as a pioneering Nigel Edwards Finance Managerinitiative for both PowerGen and General Electric. Lance Benjamin Project Accountant and their respective staff.Given the legacy of the existing units, the The Journey from LABIDCOreplacement was not going to be easy. Modern to Point Lisasdimensions were different and modificationswere required. The new one needed to be Having signed the contract in June 2015,modified to provide an exact fit and this required the manufacturing and shipping cycle took sixsome customization. About 10% of the unit months. In January of 2016, the new machineshad to be custom-fitted to accommodate the arrived at the LABIDCO Port and triggered“exchange”. There were some other evolutionary the local F2F activity.modifications to make the match.Local Talent The transport of the machines from the LABIDCO Port to the Penal Plant was a project in itself.Mr. Surindranath Ramsingh, General Manager, What was supposed to be a long, one- day,opted not to refurbish the old units. “Such a heavy-haul move, took three weeks. With arefurbishment would have incurred 75% near-zero risk approach, three independent civilof the cost of the F2F upgrade and only add 15 engineering efforts were undertaken to ensure allmore years of useful life with no guarantee roads and bridges could safely bear the 150 tonnesof long-term reliability.” The cost of a brand new of machine, trailer and truck tractor. Two overlayunit would have been three times the cost bridges had to be reengineered and installed,of the project. and on the move days we needed police escort, National Operations Centre (NOC) helicopter in“The benefits were tremendous”, explained the air and significant traffic redirection. By theirMr. Ramsingh. “Apart from the immediate cost own admission, this was the most challengingefficiencies in undertaking a Flange-to-Flange, move the heavy-haul contractor had everthe option to pursue a radical modification, undertaken.has improved reliability with an additional 40 The execution phase of the project demanded twomegawatts of energy or 78 megawatts overall.” continuous shifts, each with 40 persons assignedIn terms of risks to supply, the retrofit to various activities. Multifaceted details had toand upgrade has provided improved high be taken into consideration, not just the plant buttemperature alloys, increased efficiency through technical details and associated issues, inclusive of warehousing, accounting, administration,improvements in blade-tip clearance betweenthe housing and the tip and lower leakages using transport and logistics. The disassembly of the airthe recently introduced brush seals. Additional inlet had the GE engineer puzzled, taking one weeksensors provide triple modular redundancy and to work out and execute, thanks to the creativity and innovation of the PowerGen mechanical technicians.PAGE 4

02 0301The Generator’s Rotor There were 1300 from a neighbouring bamboo stalk and usedbeing removed using the project management it as a guide to mark the bridge. Just as he wasspecialized trolley jig steps to successful done, the entire convoy with the two turbinenicknamed “The Gizmo”. completion! heavy haul trucks appeared around the corner and ready to cross. His legs felt like jelly and he02 Old and new Pen 10 Within the major components of work used the bamboo stalk as a support ….it servedunits sitting side by side. were thirteen hundred steps. The major him many times during the journey looking components were: like a “Moses staff”03 With the New GT inplace, we started making • The deconstructing and reconstructing Deep into their journey on the final day asdetailed adjustments to of the housing for the turbines they closed in on Penal, villagers came out inprepare for aligning it to the early morning to welcome them and urgethe rest of the train. • Ultra-heavy lifting requirements from them on. Even the blackbirds on overhead ship to shore lines, peering down were curious as the “F2F tribe” busied themselves with dismantling • The transport of the large and heavy and cleaning the air house and dispelling air equipment during quiet hours particulates to create a pristine environment for the reinstallation. • Creating a sterile environment for the reinstallation Today, the organisation has been empowered by the experience and the acquisition of new • Minute detailing of every piece of skills and technical capabilities. The plant can equipment that had to be removed and now run for 64,000 fired hours before major replaced, changed or cleaned. maintenance. Geotechnicians under the supervision from our The project was completed under budget and own Michael Garcia were assigned to conduct delivered better than planned performance in soil surveys for load bearing capacity around terms of output capacity. 300,000 man-hours the Penal Combined Cycle building. Daniel with only one contractor abrasion injury Jacob reminisces on just how he came to take and one lifting incident flawed a near perfect control of a branch of bamboo which became a execution. No major incidents were reported. staff for guiding the transporters through this The F2F movement is now looking forward slow and risky journey. He shares that with the to their next project – the Point Lisas Upgrade temporary bridges being just marginally wider which is scheduled for completion in the than the trucks’ wheelbase, he wanted to mark near future. off the lines for the tuck driver to follow, and not having a measuring tape, broke a branch PAGE 5

The Commemoration of PowerGen’sPenal Plant Flange to Flange ProjectSTAKEHOLDER PERSPECTIVES Mr. Surindranath Ramsingh, General Manager, PowerGen“ This could not The completion of the upgrade “marks the culmination of several years of planninghave been achieved followed by approximately 300,000 manwithout the assistance hours of work to execute the flange to flangeand support of GE, project. The upgrade of this station’s two gasthe manufacturers of turbines which form an integral part of thethe units, the access combined cycle power generation system playsand accommodation an important role in our efficiency drive. Thisprovided by Petrotrin project has allowed us to achieve, not only anto transport the units increase in the installed capacity at the facility,to the Power Station. but as well provided improved reliability and heat rate to our customer T&TEC, demonstrating our commitment to optimizing Above: Mr.Keith Sirju, the natural gas resources to the benefit of the Chairman of PowerGen’s Board entire national community.” presents a commemorative plaque to then Minister of “This could not have been achieved without the Public Utilities, The Honourable assistance and support of GE, the manufacturers Fitzgerald Hinds. of the units, the access and accommodation provided by Petrotrin to transport the units to the Power Station, our key transport and logistics providers, and PowerGen’s shareholders – MaruEnergy Trinidad LLC, NEL Power Holdings Ltd; and T&TEC. They helped lay the framework that allowed PowerGen’s employees to demonstrate their capability and commitment to the achievement of the shared vision of the Combined Cycle plant upgrade project. This creates for us here at PowerGen a singular sense of pride in the talent of our people, confidence in our ability to overcome future challenges, and a strengthened commitment to national service and economic development as a leader in the nation’s electricity requirements.”PAGE 6

Mr. Keith Sirju, Chairman of the Board of Directors The “Penal Flange to Flange upgrade has positioned this plant to provide more electricity with less gas fuel… to do so with longer periods between maintenance cycles – the benefits of the improved efficiency of these upgraded units will therefore increase the availability of the units and further enhance the reliability of the supply of electricity that PowerGen adds to the national grid. The reduced frequency of maintenance cycles equals cost savings for the company which can then be focused on other projects that further enhance the efficiency of PowerGen’s electricity generation to the national benefit – both in the use of our natural resources (gas) and in the reliability of the supply of electricity to T&TEC and by extension to the household electricity consumer.” This is “not just a Penal plant achievement, but an achievement for PowerGen as a company.”Mr. John Rachford, Chairman –Management CommitteeThe success“The upgrade sought to strengthen the generation capabilityand the availability of the gas turbines of the Penalof this projectCombined Cycle plant which had been in operation for over30 years. On June 15, 2015 PowerGen and General Electric“is a shiningInternational Inc. (GE) entered into a contract for the PenalFlange-to-Flange project, following which PowerGen placed testament thatits order for the two new gas turbine units.”“Transporting the units from Houston, Texas to LABIDCO’s PowerGen’s in-Port in La Brea and eventually to the Penal plant proved house expertise isto be logistically a mammoth task. Notwithstanding the of an internationalseveral infrastructural challenges which the convoy faced standard.on the journey, both units arrived at Penal Power Station onMarch 20th, 2016 with work commencing the very next dayon the first unit - Penal unit 10.”“The third of November, 2016, was a noteworthy day atPowerGen and for the shareholders. This was the daythat the second unit - Penal Unit 8 - came into commercialcontinued on page 4 PAGE 7

continued from page 3 Feature address by The Honourable Fitzgerald E Hinds, Minister of 01 Public Utilitiesoperation. These new machines have both “The importance of a dynamic and resilientbeen load tested to 78 MW in simple cycle; this electricity sector cannot be overlooked; not ifis a 20 MW increase per machine over the old we are striving towards a developed economyFrame 7E turbines. The additional 40 MW of that provides citizens with a certain qualitypower generated by these units is sufficient of life. And that is exactly what we, theto the supply the electricity needs of 20,000 Government of Trinidad and Tobago, throughaverage households” our various organisations like the Ministry of Public Utilities and the Ministry of Energy,“The Penal Flange to Flange (F2F) Upgrade are working towards – A diversified andProject is historic for both PowerGen and sustainable economy that is economicallyGeneral Electric. Notably, it is the first GE viable, environmentally sound and sociallyFrame 7EA Flange to Flange upgrade to be responsible. The end result, of course, beingcompleted outside the United States of America. a healthy and happy public.This installation also positions PowerGen ashaving the leading edge technology in serviceamong Trinidad’s three power producers.”“The success of this project is a shiningtestament that PowerGen’s in-house expertiseis of an international standard. This projecthas also provided an extraordinary learningopportunity for PowerGen’s engineers andtechnicians. It is noteworthy to mention that98% of the man-hours required to completethis project was performed by locals, with theforeign services provided by GE specialists.”“At Marubeni, we recognise PowerGen’spotential to meet and exceed its existingcontract obligations, and we will continueto support the management in its drive forcontinued infrastructural developmentand enhancement of PowerGen’s capacity.The projected lifespan of these new unitsis over 30 years, so the Flange to Flangeupgrade represents an investment not justin PowerGen’s future but in the futuredevelopment of Trinidad and Tobago.”PAGE 8

0503 04 “Electricity, more specifically, a reliable “ It must be and sufficient supply of electricity, plays a noted, however,01 Mr. Keith Sirju, that PowerGen stillChairman of PowerGen’s primary role in the realisation of that ideal. It produces the lion’sBoard delivers remarks. is electricity, after all, that runs almost every02 Then Minister of Public modern convenience we can imagine, from share of the energyUtilities, The Honourable the printers and computers that we use atFitzgerald Hinds delivers theFeature Address. work, to the stoves and washing machines in generated locally, our homes. Communication, education, food03 Mr. John Rachford, thenChairman - PowerGen’s production and preparation, manufacturing, supplying 46% ofManagement Committee. transportation – every aspect of our lives relies04 Daniel Jacob, on the availability of electricity. And for 22 the power thatProject Lead. years, PowerGen has supplied us with this most is distributed via05 The Hon. Fitzgerald valuable resource.”Hinds receives a tokenfrom a GE representative. “Of course, many developments have occurred T&TEC’s national within the sector since then. PowerGen’s electricity grid.02 shareholders have changed. Other Independent Power Producers like Trinity Power Limited increase in electrical output to a reduction and Trinidad Generation Unlimited now in the amount of natural gas needed as fuel. provide power for distribution along T&TEC’s Both of these outcomes are highly desirable, nationwide electricity grid and the national specifically within the context of an expanding consumption of electricity has almost doubled economy. from 4.43 billion kilowatt-hours in 2000 to an estimated 8.37 billion in 2014.” “With this continuing development in mind, the Government of Trinidad and Tobago has “It must be noted, however, that PowerGen expressed the need for additional generating still produces the lion’s share of the energy capacity by the year 2021. That undertaking, generated locally, supplying 46% of the power while necessary, comes at a high cost to the that is distributed via T&TEC’s national public purse. And so, initiatives like this one, electricity grid.” where efficiency and output are maximised, must be applauded.” “It is against this backdrop of an evolving sector characterised by an unabated increase in demand, that PowerGen has seen it fit to implement this Flange to Flange Project. The benefits, as we have heard, range from an PAGE 9

JoThuerneyDEPARTURE AND INTRANSIT01 02 03Our journey begins at GE’s Pen 10 being loaded Pen 8 and 10 sitting sideManufacturing Facility in aboard the Ocean by side aboard the OceanGrenville South Carolina USA. Crescent for shipping. Crescent at the Port ofThe birth place of our two Houston USA.new 7EA gas turbines.Here we see Pen 10 beingprepared for final inspection.PAGE 10

04 05Units being unloaded from A closer look at Pen 10 onthe Ocean Crescent at the its SPMT (Self PropelledLabidco Port in La Brea Modular Transporter) asTrinidad. it approaches the Penal Plant’s Main Entrance. PAGE 11

01 02 01 The heavy duty crane in action.PAGE 12 02 Crane coming into alignment. 03 Jib is set in place. 04 Counter weights prepare for heavy lifting.

03 LANDING AND ARRIVAL04 05 Human Flange to Flange In parallel with the replacement of the Penal 10 Gas Turbine, retiring Mechanical Supervisor, Mr. Sahadeo Panchorie (left) hands over the reins to newly appointed Mechanical Supervisor Mr. Harrihar Ramdass, performing a human Flange to Flange.05 PAGE 13

FINAL STEPS01 The old turbine had to be 01swiveled a bit to be maneuveredsafely through the roof’s opening.It was truly an amazing sight!02 Superlift crane in position andlifting to Combined Cycle Buildingroof height.03 This is the moment we’ve allbeen waiting for. 04 The existing generator (right) is entering into a relationship with our new gas turbine. These two machines will be married by being bolted together at their coupling halves. 02 03PAGE 14

05 While we were busy with the 05 installation of our new GT, our old GT leaves the Penal Plant after serving faithfully for 30 years, across the seas back to GE. Even the skies shed a few tears that day. 0406 06 Brainstorming one of the many emerging issues. 07 Inspection being done in the refurbished Airhouse to ensure that all areas around the filters are sealed and no loose objects are left behind that can be sucked in to cause damage. This step is extremely important in preparation for starting/re-commissioning the unit. 07 PAGE 15

PowerGen’s ENERGY FUTURE Featured previously in Jan. 2018 edition of “Energy Now”POWERGEN UNDERTAKES PARTNERSHIP WITH At the time of the F2F upgrade inENERGY-EFFICIENT GE ENERGY 2016, the two GE Frame 7E combustionUPGRADES turbines and one GE SC4 steam turbine While the combined cycle station were producing a degraded combinedIn 2016, the Power Generation served the national grid for over 30 cycle baseload output of 180 MW at aCompany of Trinidad and Tobago years, business longevity, aging assets, heat rate of 9,684 kJ/kWh.Limited (PowerGen) undertook an obsolescence of critical componentshistoric upgrade of two of the gas and the national drive towards gas Upon completion of the F2F Upgrade,turbines at its combined cycle Penal saving operations were some of the 2 x 1 combined cycle configurationPower Station. the significant contributing factors produced 215 MW in Combined Cycle influencing the decision by PowerGen mode; an increase of 17% power outputThe installation was historic in nature to undertake the Flange – to- Flange against the last units degraded outputas it was the first Flange – to- Flange Upgrade (F2F). and a heat rate of 8900 kJ/kWh or anUpgrade (F2F) performed by General 8% improvement on the previous 30Electric (GE) outside of the United PowerGen partnered with GE year old configuration.States and saw the installation of two Energy to utilize the GE Frame 7EAnew GE Frame 7 gas turbines replacing as the chosen replacement with anunits that were installed some 33 increase in output of 17% from theyears previously in 1984. A Flange – previous unit at a simple cycle heatto- Flange Upgrade encompasses full rate of 10,397 kJ/kWh as comparedreplacement of an existing gas turbine to 13,000 kJ/kWh. The GE contractcore engine with a new production also included a 15 year Multi-yearengine (GE). Maintenance Program (MMP) for parts and onsite engineering support forF2F upgrades are new to the planned and unplanned outages.combustion turbine industry andrepresent a cost effective means of The seven month long projectgenerating plant life-extension where commenced in March 2016 and wasthe one-piece core combustion turbine completed utilizing 300,000 man-engine, compressor inlet flange to the hours of which 98% was in-houseexhaust outlet flange, is removed and and contracted local content. Ina new dimensionally similar modern tandem with the combustion turbinereplacement is installed. upgrade, all major auxiliaries and balance of plant were also upgraded or refurbished.PAGE 16

NATURAL GAS SAVINGS In an interview for this article, steam to drive a steam turbine as well PowerGen’s General Manager, Mr. as for export to the end user.The annual demonstrated gas fuel Surindranath Ramsingh remarked,saving based on the actual performance Furthermore, from an environmentaltesting was calculated to be 1,285,285 “I think the F2F project has made a standpoint, there will be lowerMMBTU expressed in energy or 1,253 significant contribution towards fuel emissions from the Point Lisas Powermillion standard cubic feet per year savings for PowerGen and the country at Station which will position PowerGenexpressed in volume at typical calorific large. Its increased output, improved heat as a major contributor towardvalue. In real terms, this gas saving rate and improved reliability will put the meeting the Paris Agreement goal ofcan be used to increase the output Penal Power Station high in the dispatch 15% reduction in CO2 in the powerof a typical sized methanol plant by list for grid generation and this is just the generation sector by 2030.8 %. Costed at US$3.00 per MMBTU start of similar project across our assets.” These upgrades are consistent with Old and new Pen 10 Units The F2F Upgrade represented the first PowerGen’s strategy to increase its sitting side by side. phase of PowerGen’s commitment to energy efficiency in alignment with fleet renewal, heat rate optimization, stated energy sector goals of the(Jan 2017), the annual gas savings are efficiency improvement and naturalforecasted to be US$3.8 million dollars. gas fuel optimization. In 2018, PLANS TO USE STEAMPost commissioning operation of the PowerGen continues its thrust RECOVERY FOR POWERupgraded machines supplemented toward fleet renewal and heat rate GENERATIONPowerGen’s fleet operation to realize optimization with a proposed steama combined fleet 12-month rolling recovery project at its Point Lisas PowerGen is evaluating repoweringaverage net heat rate of <13000 kJ/ Power Station. the existing units at its Point LisaskWh. Power Station with new units that POTENTIAL BENEFITS would operate in combined cycle mode OF THE PROJECT and provide a supply of extraction steam to a neighbouring petrochemical PowerGen’s gas consumption will producer on the Point Lisas Industrial reduce thereby making more gas Estate. available for product conversion. The project will save on natural gas in two The project concept involves the ways, one portion via the improved installation and operation of two efficiency in power generation, early upgraded gas Turbines, two Heat estimates show that can be in the Recovery Steam Generators (HRSGs), a order of 25 mmcfd and the other steam turbine with a controlled steam portion is the estimated displacement extraction point and the associated of natural gas by the recipient equipment required to produce power organisation are estimated to be 19 in combined cycle mode and medium mmcfd from fuel for the boilers to pressure steam. produce steam to feedstock to produce high value petrochemical products. This brings a cumulative gas savings of 44 mmcfd which is approximately equivalent to the natural gas required to run a methanol plant. The estimated overall efficiency of the combined cycle plant with steam export is estimated at site conditions of 70%. The value of the project is derived by utilizing the exhaust heat from the simple cycle gas turbines to produce PAGE 17

A proud moment! While these are certainly not all the employees and persons involved in getting our new Pen 10 7EA gas turbine safely installed, these were some of the employees and GE staff present at the time on April 22nd 2016Ò Not just PowerÉPeople too!Ó A production of the Corporate Communications Department © 2018 6A Queens Park West Port of Spain Trinidad and Tobago, W.I. Telephone: +1 (868) 624-0383 Email: [email protected]