Day 1
08:30 - WEDNESDAY 16 MARCH
08:30 REGISTRATION AND REFRESHMENTS
09:00 CHAIR’S WELCOME & INTRODUCTION
SESSION 1 INDUSTRY TRENDS
09:10 IMPACTS OF WIND GENERATION ON THERMAL POWER PLANT OPERATING REGIMES
Professor Gareth Harrison, Chair of Electrical Power Engineering, University of Edinburgh
• High wind penetration fundamentally changes role of thermal generation
• Analysis uses advanced system dispatch and wind models to define power plant operation
• Important changes in mid-merit behaviour and potential flexibility implications identified
09:30 AN INTRODUCTION INTO SOLAR THERMAL POWER GENERATION
Jaideep Sandhu – Head of Solar, Transmission and Energy Storage, ENGIE
• Introduction to concentrated solar collector technology
• Short history and present state of the thermal solar industry
• Case studies, challenge and developments
09:50 ALLAM CYCLE
Dr Hideo Nomoto, Chief Fellow, Toshiba Corporation and Rodney Allam, Chief Technologist, 8Rivers
• Design Concept Overview
• Research & Development Results
• Development Plan
10:10 Q&A SESSION
10:30 NETWORKING REFRESHMENT BREAK
SESSION 2 PARALLEL SESSIONS
2A STEAM TURBINE TECHNOLOGIES
11:00 INNOVATIVE HYBRID TURBINE TECHNOLOGY
Pramodchandra U. Gopi, Vice President, Triveni Turbine and David Tilley, General Manager, Triveni Turbines Europe Pvt
• Hybrid blade path technology with combination of impulse and reaction technologies
• Reliability and robustness for turbines
• Compact designs & efficiency
11:20 EVOLUTION OF MATERIALS FOR HIGH TEMPERATURE STEAM TURBINES
Douglas Gass, Manager Materials Engineering, Siemens Power Generation Services and Dr Torsten-Ulf Kern, Principal Engineer Materials, Siemens AG
• Materials
• High temperature steam turbines
• 620°C
11:40 THE ‘ARABELLE’ STEAM TURBINE
Tim Shurrock, Engineering Manager, GE Power
• Nuclear Turbine Technology
• New UK Nuclear Project
• New turbine technology for the UK
12:00 THE NEXT GENERATION OF INDUSTRIAL STEAM TURBINES FOLLOWING A MODULARIZED ENHANCED PLATFORM CONCEPT
Stefanie Wloczka, Project Manager, Siemens AG
• Modular Design
• Improved efficiency
• Improved working conditions
2B GENERATOR TECHNOLOGIES
11:00 DESIGN/MANUFACTURING CHALLENGES OF LARGE CAPACITY NUCLEAR FLEET GENERATORS
Hitoshi Katayama, Chief Engineer, Toshiba Corporation
• Nuclear Units are now reaching over 1500MW capacity, with a demand for high reliability.
• Output Voltages, Current are raised and physical sizes increased, challenging many aspects of design.
• The presentation is an outline of Toshiba’s technologies developed to address these challenges.
11:20 REMOTE MONITORING OF GENERATORS
Andrew Crosby, Manager, Generator Field Service Engineering, Siemens Power Generation
• Impact of renewable energy on generator operation
• Electric failures
• Early detection and diagnosis
11:40 700 MW NON WATER COOLED GENERATOR
Julien Tromenschlager, Generator Product
Manager, GE Power
• 710MVA 50Hz indirect cooled generator.
• High-performance machine using TVPI insulation and three parallel path stator winding.
• Machine tested and already sold several times
12:00 WESTON GENERATOR ROTOR REPAIR
Bill Moore, Director, Technical Services, National Electric Coil
• Case study into a generator rotor failure
• Recovery of forging avoiding lengthy procurement times
12:20 Q&A SESSION
12:40 NETWORKING LUNCH
SESSION 3 STEAM TURBINE MODIFICATION AND ENHANCEMENTS
13:40 USE OF CRACKED BODY MODELLING TO DE-RISK STEAM TURBINE LIFE EXTENSION
Joe Lindsey, Senior Engineer, Frazer-Nash Consultancy
• Cracked Body Modelling
• Custom SIF Solutions
• Future Exploitation
14:00 STEAM TURBINE START-UP IMPROVEMENTS
Dave Wallis, Lead Steam Turbine Engineer, RWE Generation UK
• Steam turbine start-up improvements at a CCGT power station
• Assessment of the steam turbine start-up and potential improvements
• Outcome and results, including the time savings to the stations
14:20 A FLEXIBLE ANALYTICAL CALCULATION APPROACH FOR START-UP TIME- AND LOAD MANAGEMENT OPTIMISATION
Wolfgang Beer, R&D Engineer, Siemens Power & Gas and Lukas Propp, R&D Engineer, Siemens Power & Gas
• Fast and flexible analytical calculation approach
• Start-up optimisation
• Lifetime optimisation
14:40 HEYSHAM 2 TG7 HP TURBINE - HIGH SHAFT VIBRATION INVESTIGATION AND RECTIFICATION
Simon Carr, System Engineer - Turbine & Auxiliaries, EDF Energy - Heysham 2 Power Station and Sam
Atkin, Mechanical Engineer, EDF Energy - Turbine Support Group
• Historical evidence and long term vibration trend
• Investigation and diagnosis
• Solution design and installation
15:00 Q&A SESSION
15:20 NETWORKING REFRESHMENT BREAK
SESSION 4 GENERATOR DEGRADATION, FAILURES & CASE STUDIES
15:40 CASE STUDY – EMERGENCY REFURBISHMENT OF NEXEN’S BUZZARD GENERATOR
Roy Beardshaw, Head of Global Aftermarket Engineering
• Sudden failure of generator
• Non-intrusive inspection
• Emergency turnaround within confined space
16:00 ROOT CAUSE ANALYSIS OF A STATOR TO GROUND FAULT ON A 550 MVA GENERATOR
(TIHANGE NUCLEAR SITE)
Jean-Louis Farvacque, Generator Service Manager, ENGIE
• Introduction
• Disassembly process and Bar autopsy
• RCA conclusions and experiment movie
16:20 HOW TO CONTROL QUALITY WHEN IT IS FROM EXPERTS
Mazhar Saleem, Key Account Manager, Laborelec
• Inspection after first year of operation is critical but Robotic inspection is not sufficient
• Quality control during manufacturing is not to the mark these days. How to ensure that customer gets a quality product
• Horizontal restacking versus Vertical restacking – a big challenge and a compromise to quality
16:40 ISSUES WITH POOR DESIGN/QA/MANUFACTURE IN MODERN BUILT GENERATORS
Ben Adams, Electrical Technical Expert, ENGIE
• Failures
• Poor QA
• Poor Design
17:00 Q&A SESSION
17:20 CHAIR’S CLOSING REMARKS
17:30 CLOSE OF DAY ONE
19:00 NETWORKING DINNER
Day 2
08:30 - THURSDAY 17 MARCH 2016
08:30 REGISTRATION AND REFRESHMENTS
09:00 CHAIR’S OPENING REMARKS
SESSION 5 PLANT OPERATION
09:10 CONSIDERATIONS FOR LARGE STEAM TURBINES ROUTINELY EXPERIENCING LONG
SHUTDOWN PERIODS
Jonathan Thorns, Engineer, GE Power
• Optimised start times
• Long shutdowns
• Risk mitigation
09:30 THE ECONOMIC IMPACT OF POWER PLANT CHEMISTRY IN RESPECT TO OPERATION,
LIFETIME AND MAINTENANCE OF A STEAM TURBINE
Frank U. Leidich, Transverse Technology Unit Director Mannheim, GE Power and Joerg Sperling,
Principal Engineer Chemical, GE Power
• Impact of deposits on turbine performance
• Increased turbine failure probability by inappropriate chemistry control
• Case studies
09:50 FLEXIBILITY UPGRADES ON STEAM TURBINES
Dr Burak Kaplan, Service Development Manager, Mitsubishi Hitachi Power Systems Europe and
Alessandro Calabrese, Customer Support Engineer, Mitsubishi Hitachi Power Systems Europe
• Variable startup
• Automatic plant startup completion at a lower load
• Relaxation of steam admission limits
10:10 STEAM TURBINE OVERSPEED CALCULATION METHOD
Stuart Rowe, Manager, GE Power
• Turbine overspeed calculation
• Block of energy’ method
• Requirements of BS EN 60045
10:30 Q&A SESSION
10:50 NETWORKING REFRESHMENT BREAK
SESSION 6 GENERATOR OVERHAULS & LIFE EXTENSION
11:10 IMPEDANCE SPECTROSCOPY AND RESONANCE IN TESTING OF TURBOGENERATOR
ROTOR RETAINING RINGS TECHNICAL CONDITION
Dariusz Baron, Turbogenerator Specialist, EthosEnergy Poland S.A
• NDT testing of turbogenerator rotor retaining rings
• Method to be used is induction coil impedance spectroscopy and resonance method
• Test results and the role of retaining rings in the turbogenerator operational safety
11:30 SUCCESSFUL LAUNCH OF RAPID ROTOR REWIND IS CHANGING THE GAME FOR ON-SITE
REWINDS OF AIR-COOLED GENERATORS
Kathy Stubbs, Manager, New Products, GE Power Services
• A ‘Rapid Rotor Rewind’ (3R) has been successfully performed at a CCGT plant in Thailand within an unwind
and rewind time of only 18 days
• The 3R aims to minimise outage time at best cost for air-cooled generator rotors
• Successful pilot opens opportunities for on-site rotor insulation lifetime extension on small air-cooled generator
rotors coupled to gas turbines installed during the gas boom of the 1980’s
11:50 Q&A SESSION
12:00 NETWORKING LUNCH
SESSION 7 TURBINE OVERHAULS & LIFE EXTENSIONS
13:00 NEW STRATEGIES FOR OIL FLUSHING DURING THE REVISION OF STEAM TURBINES
Russell Cradduck, Sales & Distribution Manager, Europe, Fluitec UK and Jo Ameye, General Manager
Europe, Fluitec NV
• Remove oil degradation products from steam turbines during revisions by using a compatible, solubilityenhancing
cleaning agent
• Avoid the need for a “sacrificial rinse”
• Reduce time spent on planned outages
13:20 THERMAL AND STRUCTURAL STEAM PATH AUDITS
John Alaksiewicz, Senior Technical Leader, GE
• Structural Reliability
• Performance Recovery
• Technically and Economically prudent maintenance decisions
13:40 L-0 BLADES IN TURBINES; THEIR REPLACEMENTS AND IN-LINE ROOT CRACK TESTS
Bjarne Sig Andersen, Principal Specialist, Ramboll Energy – Power and Lars Fejrskov Jensen,
Engineer, DONG Energy Thermal Power
• Damages to L-0 blades in 375 MW CHP turbine for wide flow range
• Replacement of L-0 blades in 375 MW CHP turbine
• In-line tests for root cracks in two 400 MW CHP turbines
14:00 TROUBLESHOOTING OPERATION AND MAINTENANCE ISSUES - GE A SERIES AND D
SERIES STEAM TURBINES
Scott Cavendish, President, Independent Turbine Consulting, LLC
• Evolution of combined cycle steam turbine design
• Combined cycle maintenance issues
• Common causes of startup and operation issues
14:20 Q&A SESSION
14:35 NETWORKING REFRESHMENT BREAK
SESSION 8 INSPECTION & MONITORING
14:55 STEAM TURBINE THERMAL PERFORMANCE DIAGNOSTICS
John Tzagkarakis, Steam Turbine Performance Engineer, GE Power & Water, Thomas Winterberger,
Principal Engineer, GE Power & Water
• Steam Turbine Diagnostic Parameters
• Performance and Health
• Monitoring of the Turbine Cycle
• Case Studies
15:15 A NEW APPROACH TO THE INSPECTION OF LARGE STEAM TURBINES FOR TODAY’S
GENERATING FLEET
Mike Jones, Principle Engineer, GE
• Extended inspection intervals
• Flexible approach to turbine maintenance
• Opportunities for utilities
15:35 IN-SITU GENERATOR INSPECTION TECHNIQUES
Mark Wright, Electrical Test Engineer, Siemens Power Generation
• Assesses the pros and cons of inspecting and testing generators with the rotor removed against with the rotor
in-situ.
• Discusses the techniques involved in conducting in-situ inspections.
• Discusses case studies where these techniques have been put into practise.
15:55 ACOUSTIC THERMOGRAPHY NDE OF STEAM TURBINE BLADING
Geoff Horseman, Chief Turbine Engineer, Siemens Power Generation and Forrest Ruhge, Principal
Engineer, Siemens Energy
• Special crack detection method for eroded steam turbine blades
• Employs acoustic thermography to distinguish between cracks and erosion
• May be used in-situ with turbine covers on
16:15 Q&A SESSION
16:30 CLOSING REMARKS
16:40 CLOSE OF USER GROUP