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Security of electric supply Torsten Strand, Siemens Industrial Turbo machinery, Finspong, Sweden, Heat&Power, KTH, Stockholm torsten.strand@siemens.com.

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Presentation on theme: "Security of electric supply Torsten Strand, Siemens Industrial Turbo machinery, Finspong, Sweden, Heat&Power, KTH, Stockholm torsten.strand@siemens.com."— Presentation transcript:

1 Security of electric supply Torsten Strand, Siemens Industrial Turbo machinery, Finspong, Sweden, Heat&Power, KTH, Stockholm 4/16/2017

2 Introduction The electricity supply system basically consists of
Electricity production Distribution to the consumers But there is also the fuel supply chain for fossil plants Oil and gas production and transport The security of electricity distribution has been deeply scrutinized by the press during the last years due to Black outs in Sweden and the USA The snowballing shut down effects of a local frequency drop Snow storms and the storm Gudrun Trees cutting local air born power lines The focus is presently on putting the air lines in the ground 4/16/2017

3 Energy converters reliability
Content definitions requirements on different types of power plants redundancy supervision maintenance schemes reliability centred maintenance 4/16/2017

4 Introduction to energy conversion plants
Energy converting plants will have different requirement on reliability, depending on operating profile in the total environment There is a difference between reliability and availability There is a price on reliability and availability, which in some way is built into the life cycle cost of a power plant in the design of the components by redundancy in the system by maintenance programs 4/16/2017

5 Operation types in the electricity production system
Gas turbines Peak shaving Power controlled hydro power Municipal heat and power Industrial co-generation Intermediate Wind power Base load Nuclear power Hydro power 4/16/2017

6 Gas turbine power plants
Beaver Station/USA Anaconda/Australia Edjeleh/Algeria, 1xMD Applications (2), SC PG: Power Generation Plants have been engineered and delivered both for landbased and offshore applications. An example of an offshore application is the 3 single lift GT35 genset modules supplied for the BP ULA field (Norwegian North Sea). The genset modules were engineered, packaged and full load tested on both gas and liquid fuel prior to shipment, carried out under the responsibility of ABB. Borsod Chem / Hungary

7 Gas turbine Starter motor Air intake Compressor Combustion chamber
Compressor Turbine Power turbine Exhaust duct 4/16/2017

8 Auxiliary systems 4/16/2017

9 Gas turbine package 4/16/2017

10 Availability/Reliability, Definitions
PH (100%) Reliability Factor = RF Period Hours - Unplanned Outage Hours = x 100 (%) RF (XX %) Period Hours Availability Factor = AF PH (100%) AF (YY %) Period Hours - ( Planned Outage Hours + Unplanned Outage Hours) = x 100 (%) Period Hours Period Hours = 8760 hours = 1 year (normal period) 4/16/2017

11 Availability/Reliability, Definitions
Forced Outage Rate = FOR SH (100%) Forced Outage Hours = x 100 (%) FOR Service Hours + Forced Outage Hours Service Hours = the number of hours the plant was operating Mean Time Between Failures = MTBF = the average time in hours the plant operates before "tripping". Mean Time To Repair = MTTR = the average time in hours to bring the plant back into normal operation after a trip. MTBF and MTTR are normally measured over a long period (1 Mhours) 4/16/2017

12 Availability/Reliability
Period Hours Available Hours Unavailable Hours Service Hours Reserve Shutdown Planned Outage Unplanned Outage Hours Hours Hours Built in at component development Reduced by redundancy, maintenance programs and supervision by Condition Monitoring Systems 4/16/2017 2

13 Availability/Reliability
Period Hours The number of hours the unit was in the active state, i.e total measuring period Available Hours The number of hours the unit was in the available state Unavailable Hours The number of hours the unit was in the unavailable state Service Hours The number of hours the unit was in the in-service state Reserve Shutdown Hours The number of hours the unit was in the reserve shutdown state, i.e ready to operate Planned Outage Hours The number of hours the unit was unavailable due to pre-planned inspection or overhaul Unplanned Outage Hours The number of hours the unit was unavailable due to unplanned inspection or overhaul 4/16/2017 3

14 Planned outages market requirements competitive situation
The planned outages for maintenance are dependent on TBO = Time between Inspection or Overhaul Time needed for inspection and overhaul This is built into the product in the development phase and chosen from market requirements competitive situation technology situation (materials, manufacturing processes) cost optimisation 4/16/2017

15 Continuous supply systems No or small storage possibility
Electricity Steam for industrial processes Natural gas pipe line transport Aero & Marine propulsion High availability necessary in production and transport due to cost or safety High reliability of components redundancy 4/16/2017

16 Fast Ferry on river de la Plata
GT35C in Catamaran service Buquebus (Buenos Aires-Montevideo) 2 x 17 MW, liquid fuel = 60 knots 450 passengers + 50 cars Applications (5.1), Fast Ferry: Fast ferries with a speed range of knots is an application, which ABB has experience with. One ferry (HSS900 Carisma, 40 knots) with 2 x GT35 gas turbines, owned by Stena Line of Sweden, sails between Gothenburg (Sweden) and Frederikshavn (Denmark) and another ferry (Buquebus B-60, 60 knots), owned by Buquebus of Uruguay, sails between Buenos Aires (Argentina) and Montevideo (Uruguay). - One gas turbine can drive at reduced speed -

17 Floating Production- Storage- Offload (FPSO)
Applications (4), Floating Production Storage Offloading (FPSO): The Floating Production Storage Offloading (FPSO) market is expanding, and ABB has engineered and delivered 2 x GT35 power generation packages for the Banff field, located in the UK North Sea. The gas turbines are producing electrical power for the process and the electrical motors for the thrusters for the positioning of the vessel. This application has requirements on “roll & pitch” etc., similar to the fast ferries (see next Slides). Aker Oil & Gas Technology UK ordered 2 x GT35 for the 121 m Ramford Banff FPSO. The vessel, built by Hyundai at its Mipo Shipyard in Korea, was delievered to Aker Mc Nulty on Tyneside, U.K. for fitting of topside processing equipment. The contract was placed on behalf of Petroleum Geo-Services (PGS), the Norwegian-based company that will own and operate the vessel at the Banff field, located in the UK North Sea. 2 x GT35 for Banff - One unit is enough, but two in operation -

18 Off shore platforms 3 x SGT-500 for Shell Draugen
Applications (2), SC PG: Power Generation Plants have been engineered and delivered both for landbased and offshore applications. An example of an offshore application is the 3 single lift GT35 genset modules supplied for the BP ULA field (Norwegian North Sea). The genset modules were engineered, packaged and full load tested on both gas and liquid fuel prior to shipment, carried out under the responsibility of ABB. 3 x SGT-500 for Shell Draugen 3 x SGT-500 for BP Ula

19 Semi-continuous systems Storage is possible
Water production and transport water towers Heat e.g. in district heating systems hot water tanks Oil transport oil tanks and reservoirs Lower availability target possible 4/16/2017

20 Operation types in the electricity production system
Gas turbines Peak shaving Power controlled hydro power Municipal heat and power Industrial co-generation Intermediate Wind power Base load Nuclear power Hydro power 4/16/2017

21 Base load Electricity production
Hydro power highest mechanical reliability - but water supply may fail long TBO and MTBF- long MTTR Nuclear power highest mechanical reliability - but rigorous safety requirements may reduce availability rather long TBO and MTBF - and long MTTR Coal fired steam power plants cost optimised mechanical reliability boilers need continuous servicing and rather frequent maintenance steam turbine has long TBO and MTBF - and rather long MTTR Gas combined cycle power plants gas turbine needs periodic maintenance has short TBO and MTBF - but short MTTR 4/16/2017

22 Medium load electricity production
Municipal heat and power production winter season district heating is the base in North and East Europe power production from municipal waste, bio-mass, NG high availability during operating season long time available for maintenance Industrial steam and power production steam demand is the base most of the power production is usually sold to the grid when profitable process off fuels (black liquor, refinery gas….), NG high availability demand on the steam production, but often lower on electricity an unscheduled stop can cause serious production loss 4/16/2017

23 Peak shaving in electricity production
Special for Sweden: Power controlled hydro power & import has basically eliminated all conventional peak and reserve power plants Except for this winter, before new nuclear power is added Simple cycle gas turbine power plants reliable starting, black start capability fast loading to full power operation very much based on economy Peak power is very well paid and expensive for the consumer fuel: NG with oil back up 4/16/2017

24 Peaker for community in the USA
Operation only when economy is right Dual fuel for high availability even at gas shortage Start up to full load in 10 min Unmanned operation in winter time Operating engineer in summer time - Many starts, few hours - 4/16/2017

25 Black start capability
Gas turbine start without external sources Lube oil pumps, fuel pumps etc battery operated or run by diesel engine generator Starter motor operated by diesel engine generator, compressed air or “natural gas turbine”* Compressed air injector in compressor inlet *) a turbine using compressed natural gas as working medium (not so common any more due to environmental concerns) 4/16/2017

26 Special power production
Wind power mechanical availability rather low short TBO&MTBF - short MTTR energy supply unpredictable introduces flexibility requirement on other components in the production system large size units good for efficiency (more wind the higher they are), but worse for service Sun power so far only for local use photovoltaic cell based plants: The frequency converter has the lowest TBF 4/16/2017

27 Reserve power Coal & oil fired steam condensing plants
almost all plants in Sweden mothballed (except for this winter) long TBO&MTBF - long MTTR NG & oil fired gas turbine & diesel engine plants distributed power to start up black grid local emergency power (industries, super markets, hospitals) high starting reliability/short operating time Gas turbines for Nuclear power plant emergency cooling water pumps automatic start on low grid frequency 4/16/2017

28 Hot water & steam production
Municipal co-generation plants steam turbines, gas turbines with exhaust heat recovery boiler or combined cycles fuels: NG, diesel oil, coal, municipal waste and biomass District heating plants boilers for bio-mass, waste, electricity reserve fuels: oil, coal heat pumps, electric boilers A variety heat of production plants/possible to import el Industrial heat and power steam and gas turbines, boilers fuels: NG, black liquor and process off gases Boiler back up 4/16/2017

29 Mixed fuel: waste and diesel oil
Municipal CCPP GT + ST + WHRB Award 1996: The lowest NOx per produced kWh plant in Sweden !! Applications (1), CCPP (and CHP): Combined Cycle Power Plants and Combined Heat and Power Plants have been engineered in large numbers and an example is the Gärstad Plant in Linkoping Sweden, producing 50 MW of electricity and 85 MW of district heating. The Plant consists of one gas oil fired GT10 Gas Turbine (25 MW), one Heat Recovery Steam Generator (HRSG), one Steam Turbine (25 MW) and one Waste Incineration Boiler burning approx tons/year of sorted household waste. The Waste Incineration Boiler is preheating steam, which is then superheated in the HRSG. Efficient combustion and modern flue gas cleaning technology are used throughout the process. This Plant was the #1 Low NOx Producer per kWh of energy in Sweden both year 1996 and 1997, acc. to the Swedish Environmental Protection Agency. Gärstad plant, Linköping, Sweden GT10B in CCPP, 50 MWe and 85 MWth (district heating) Mixed fuel: waste and diesel oil

30 4/16/2017

31 Gas and oil transport Pipeline compressor drives electric motors
gas turbines (gas or diesel fired) simple cycle combined cycles High reliability necessary in often very tough environments low temperature/high temperature fuel quality changing long distance to maintenance facility (off shore, northern world (Canada, Alaska, Siberia, Iran) Redundancy: Min 2-3 unit in gas pumping station 4/16/2017

32 Key sales factors for gas and steam turbines
Availability Flexibility (load variations, fuels) Maintainability Efficiency Price 4/16/2017

33 Drives for high reliability/availability
Depends on operation type, but Life Cycle Cost for the power plant is one important factor availability is a heavy component in the LCC formula industrial production disturbances = revenue loss is often the most important factor especially in Industrial heat&power system risks gas transport in pipe lines aero&marine propulsion 4/16/2017

34 Typical ways to improve availability
Unplanned disturbances are often generated in auxiliary systems (valves, servomotors, gauges) control system (transducer failures, program errors) Tripping out a power plant, which may be a small part of an industrial process is costly trip for protection of the power plant to be avoided if not causing risk for personal injuries no trip on 1 indication, usually 3 out of 3 load reduction instead of trip, to provide time for start up of reserves Redundancy usually the solution 4/16/2017

35 Natural gas production on platform
1 out of 3 enough for demand 2 units always in operation Applications (2), SC PG: Power Generation Plants have been engineered and delivered both for landbased and offshore applications. An example of an offshore application is the 3 single lift GT35 genset modules supplied for the BP ULA field (Norwegian North Sea). The genset modules were engineered, packaged and full load tested on both gas and liquid fuel prior to shipment, carried out under the responsibility of ABB. 3 x GT35 for Shell Draugen 3 x GT35 for BP Ula - Simple Cycle redundance -

36 Michelin tyre factory, UK Independent Power Producer
4/16/2017 Steam boiler as backup to gas turbine exhaust boiler

37 GT10 CCPP in Ängelholm, Sweden
Utility Application District Heating 1 x GT10A (DLE) Natural Gas Fuel/Heating Oil 1 x WHRB 1 x ST Plant Power: ,7 MWe Electrical Efficiency: 42,8 % Thermal Power: ,5 MWth Total Efficiency: ,7 % NOx ppmv In operation since: End of 1991 4/16/2017

38 Process diagram for non-reheat cycle in co-generation operation
. deg F = (deg C x 9/5) + 32 1 bar = 14,5 psi Feed water tank A 52 C LP economizer LP evaporator LP superheater 6 bar / 205 C A HP economizer 80 bar / 525 C G HP evaporator Steam Turbine 1 bar(a) HP superheater Heat Condenser Duct burners 15 C ambient, sea level, inlet 10 mbar, outlet 30 mbar, RH = 60%, N.G. fuel Pinch point 10 K S-heater terminal temp diff 25 K Economiser approach temp diff 5 K Gas Turbine Fan G Shutter Heat losses 1% of heat exchanged, uniformly distributed

39 Gas turbine Auxiliary systems
Basic design: 1 out of 1 Optional: 1 out of 2 Lube oil: 1 out of 3 4/16/2017

40 Gas turbine Control system Unit protection system
Block diagram Basic “Fail Safe” energised during operation Tripping scheme 1oo3 Process measurement 1oo1 1oo2 1oo2 Fuel shutoff valves Advant AC100 1 out of 1 trips in node1. 1 out of 2 trips in both node 1 and node 2. Emergency stop pushbutton Protection output +24V

41 Generator protection Generator protection Standard protections
51V, Voltage restrained over current 32, Reverse Power 40, Loss of field 46, Negative sequence 58, Diode fault (AVR) 59/27, Over/under voltage 59N, Neutral point (zero sequence) voltage 64R, Rotor earth fault 87, Generator differential Optional protection 67N, Directional earth fault or 87N, Restricted earth fault 50N/51N, None directional 21, Under impedance 87GT, Block differential 78, Out of step

42 Condition Monitoring System
Module 1 Performance module DCS link Module 0 PC & DB, Long-term Data storage & trending. Module 2 Emission module Module 5 Component life module Module 3 Vibration module Module 4 4.1 Remote On Line Support 4.2 Analyses, reports 4/16/2017

43 - 43 MW Single shaft, simple robust Industrial design - -
GTX MW Bearing #2 (radial) . Bearing #1 (radial + thrust) Annular CC with 30 dual fuel AEV burners Engine inlet Engine exhaust diffuser 15 stage compressor 3 stage turbine Pendelum support(s) Drive shaft to generator Transverse fix point support Fix point support(s) - 43 MW Single shaft, simple robust Industrial design - -

44 Gas turbine component life
Life of hot parts are limiting for TBO design life typical 40000 hrs (creep life) 2000 cycles (low cycle fatigue) some hot part may need refurbishing after hrs Life of cold parts design life typical > hrs CMS keeps track of critical components remaining life 4/16/2017

45 Turbine Inlet Temperature and emissions
Turbine Inlet Temperature C and NOX Ceramics Steam Cooling 1500 200 Single Crystal Blades GTX100 Jet Engines GT200 GT10 1000 100 GT35/GT120 Stationary Gas Turbines 500 Year 4/16/2017

46 EOH & EOC H0 = Cx x Cf x H + 5 x N0) = Equivalent Operating Hours
Cx = Stress factor Cx= 0,5 for operation on part load curve Cx = 1 for operation on base load curve Cx = 10 for operation on peak load curve Cf = Fuel factor Cf = 1.0 for gas according to GTI J241003E Cf = for liquid fuel according to GTI J242002E H = Operating hours N0 = Cn x N) = Equivalent Operating Cycles Cn = Start and stop factor Cn = 0 normal start - trip T7 300 deg C Power Generation Cn = 0,2 normal start - trip T7 >300 deg C, but PT speed has not reached synch. idle speed Cn = 0,7 combined cycle start - normal stop Cn = 1 normal start - normal stop Cn = 5 normal start - trip at load > 50 % Mechanical Drive Cn = 0,2 normal start - trip T7 >300 deg C, but GG speed has not reached 7500 rpm Cn = 0,7 combined cycle start - normal stop Cn = 1 normal start - normal stop Cn = 5 normal start - trip at load > 50 % N = Number of start/stop cycles There is also a quick start available where the start factor is multiplied with 8. This corresponds to a load increase of 220kW/s (compared to the normal 60kW/s). By that the total start up time is reduced from approximately 11.5 minutes to 6.5 minutes. Sometimes there is a question what happens with steam or water injection since this is usually penalised with a high Cx bu our competitors. We instead reduce the turbine inlet temperature a few degrees in order to compensate for that - there will anyway be a significant performance increase. 4/16/2017

47 Maintenance program schedule
How often ? Scheduled or on condition? Level E Level D Level C Level B Level A Operation Maintenance x1000 E. O. H 4/16/2017 16

48 GT10 Operation & Maintenance
Maintenance Program Boroscope planes, 9 access points Compressorblades 1, 4 and 10 Combustionchamber Turbineblades 1, 2, 3 and 4 4/16/2017

49 Ease of maintenance eq.hrs between inspections, TBO eq.hrs 1,7 % downtime for planned maintenance over eq.hrs Engine can be serviced in situ (availability 93-97%) or replaced and taken to local workshop (availability >98%)

50 On site maintenance 4/16/2017

51 Engine removal at overhaul
4/16/2017

52 Reliability Centered Maintenance
4/16/2017

53 Traditional view on component life
Things wear out with time or cycles, so exchange them just in time - we try to determine the life time of a component or - we try to design a component for a certain life time Based on that we try to keep track of the remaining life, to exchange at right time - wear may be fatigue, corrosion, abrasion or evaporation Gas turbine blades are supposed to be typical for this thinking 4/16/2017

54 Gas turbine blades Typical life limited components
LCF from the number of starts Coating consumed by operation hours at high temperature Coating refurbished after 20000hrs LCF cracks growth and creep ends life after 40000hrs Unexpected corrosion due to bad fuel or overheating due to combustion disturbances can shorten life A blade failure can cause severe secondary damages. Avoided by inspections. 4/16/2017

55 Gas composition This is what has happened to a turbine where liquefied natural gas entered the combustion chamber in less than 1 minute of time. Consequence of liquefied natural gas entering the burner section 4/16/2017

56 The new approach things are complex
Studies done on civil aircraft showed that • 4% of the items conformed to pattern A, • 2% to pattern B, • 5% to pattern C, • 7% to pattern D, • 14% to pattern E and no fewer than • 68% to pattern F. Infant mortality may increase with overhaul too often, but type A and B parts may necessitate overhauls 4/16/2017

57 Maintenance Maintenance concept Preventive maintenance maintenance
Corrective maintenance Preventive maintenance Repair activities Trouble shooting Operation maintenance Maintenance program Daily attendance Maintenance levels A - E Routine maintenance activities 4/16/2017 4

58 Preventive Maintenance
The question of proactive tasks Reliability Centered Maintenance divides proactive tasks into three categories, as follows: Scheduled on-condition tasks Scheduled restoration tasks Scheduled discard tasks Scheduled restoration entails remanufacturing a component or overhauling an assembly at or before a specified age limit, regardless of its condition at the time. Similarly, scheduled discard entails discarding an item at or before a specified life limit, regardless of its condition at the time. Collectively, these two types of tasks are now generally known as preventive maintenance. They used to be by far the most widely used form of proactive maintenance. However for the reasons discussed above, they are much less widely used than they were twenty years ago. 4/16/2017

59 On condition maintenance
The new techniques are used to detect potential failures so that action can be taken to avoid the consequences which could occur if they degenerate into functional failures. They are called on-condition tasks because items are left in service on the condition that they continue to meet desired performance standards. On-condition maintenance includes predictive maintenance condition-based maintenance and condition monitoring Used appropriately, on-condition tasks are a very good way of managing failures, but they can also be an expensive waste of time. RCM enables decisions in this area to be made with particular confidence. 4/16/2017

60 Maintenance on customer demand
Very often the customer has regular schedules for plant maintenance (summer stop during vacation time etc) Power plant maintenance has to match the plant maintenance schedule Most industrial gas turbine are designed for 40000 hrs between major overhaul (4 – 5 years) 20000 hrs between hot section inspection Jet engines with frequent overhaul schemes use on condition approach 4/16/2017

61 Service products 24 h Telephone Support Service contract feature
Manned by Siemens expert personnel Included in Service contracts 4/16/2017 45

62 Service products Time & Cost Savings Spare Parts Back-up
Reserved for corrective maintenance Substantial savings for agreement customers 4/16/2017 46

63 Service products Contingency Spare Parts Repurchase guarantee
Minimised down-time No “unnecessary” parts at customer's expense Available during overhauls for customers holding preventive or corrective maintenance agreements 4/16/2017 47

64 Service products Spare Gas Generator for minimized down-time
Reserved for corrective maintenance Substantial savings for agreement customers 4/16/2017 48

65 Service products Spare parts to be ordered according to Maintenance program Consumables (if not at site) Replacement parts Contingency spare parts 4/16/2017 55

66 Service products Spare parts stored by Siemens
Emergency spares (All vital parts for the gas generator) Spare gas generator Spare parts stored by Siemens 4/16/2017 54

67 Service products Spare parts to be stored at site
Operation consumables Operation back-up One complete set of consumables for inspections Spare parts to be stored at site 4/16/2017 56

68 Service Agreements Siemens Value Availability and cost savings
Customer choice Availability and cost savings No agreement Support agreement Emercency support agreement Preventive maintenance agreement Corrective maintenance Full operation & maintenance So what have we at ALSTOM Finspong, former ABB STAL, done to meet these new requirements. In the beginning of 1996 we launched an agreement concept consisting of 4 standard levels where each level is adding to the previous one. We named the standard packages Support Agreement, Emergency Support Agreement, Preventive Maintenance Agreement and Corrective Maintenance Agreement. In 1998 we extended our offers with another step on the ladder, Full O&M agreement. When we designed this concept we defined fiver different customer profiles in order to as far as possible tailor make a standard package to meet the requirements of each customer group. 4/16/2017

69 Support agreement Customer profile Scope Service Agreements
24 hours telephone support Reduced fee on emergency spares Reduced fee on emergency gas generator Follow up of operation statistics Lubrication oil analyses Maintenance tradition Uncertain operation profile Production redundancy The first leve,l Support agreement, is directed towards customers with maintenance tradition, often not GT maintenance but with long general maintenance experience. They have an uncertain operation profile which means that the preventive maintenance scope is not yearly fixed. They have some sort of production redundancy. A Support Agreement includes a base level of availability supporting products such as 24 hours telephone support, follow up of operation statistics and regular lubrication oil analyses. The customer also have a discount when buying spare parts from the emergency spare pats store or renting the emergency gas generator. 4/16/2017 14

70 Emergency support agreement
Service Agreements Emergency support agreement Customer profile Scope 24 hours telephone support Follow up of operation statistics Lubrication oil analysis Guaranteed mobilisation time No emergency fee on emergency spares No emergency fee on gas generator Maintenance tradition High demands on reliability Risk oriented The next level is Emergency support agreement. Also this customer profile contains maintenance tradition but these customers have higher demands on reliability. They suffer more from operational disturbances and are therefore more risk oriented. The Emergency support agreement adds on top of Support agreement also guaranteed mobilisation time. When buying parts from the emergency spare parts store or renting the emergency gas generator no emergency fee is applied. 4/16/2017

71 Preventive maintenance agreement
Service Agreements Preventive maintenance agreement Scope 24 hours telephone support Follow up of operation statistics Lubrication oil analysis Guaranteed mobilisation time No emergency fee on emergency spares No emergency fee on gas generator Spare parts for preventive maint. Work management for PM Guaranteed execution time for PM 200 hours technical advice Access to contingency spare parts for PM Customer profile Predictable operation profile High demands on availability Focus on core business The third level is Preventive maintenance agreement which is directed towards a different type of customer. They have a predictable operation profile and high demands on availability. The GT is normally expected to run continuously and to be maintained on Christmas Eve. These customers are producing salt, paint, cleaning agents or are pumping oil or gas and for that they happen to use a gas turbine. On the scope side a Preventive maintenance agreement is a major step from Emergency support agreement since here is also added spare parts and work management for preventive maintenance. Further guaranteed execution time for preventive maintenance, 200 hours of technical advice and access to back-up spares for preventive maintenance is now included. 4/16/2017

72 Corrective maintenance agreement
Service Agreements Corrective maintenance agreement Customer profile Scope 24 hours telephone support Follow up of operation statistics Lubrication oil analysis Guaranteed mobilisation time No emergency fee on emergency spares No emergency fee on gas generator Spare parts for preventive maintenance Work management for PM Guaranteed execution time for PM Access to contingency spare parts for PM Risk / reward sharing Technical advice Predictable operation profile High demands on availability Focus on risk management The customer profile for the next level, Corrective maintenance, is describing a customer even more focused on risk mitigation. To meet this, risk/reward sharing for unplanned maintenance is included in this package and technical advice is no more limited to 200 hours during the agreement period. 4/16/2017

73 Full O&M agreement Scope Customer profile Service Agreements
24 hours telephone support Follow up of operation statistics Lubrication oil analysis Guaranteed mobilisation time No emergency fee on emergency spares No emergency fee on gas generator Spare parts for preventive maintenance Work management for PM Guaranteed execution time for PM Access to contingency spare parts for PM Risk / reward sharing Technical advice Operation Full scope of guarantees negotiable Customer profile No own O&M resources High demands on availability Focus on technical and commercial risk management Finally the highest agreement level is the full O&M agreement. This is an agreement for customers who doesn't have own O&M resources, who have very high demands on availability and are working actively with technical and commercial risk management. For these customers the Full O&M agreement includes also operation of the power plant and therefore the full scope of guarantees are negotiable. Since we launched these five agreementlevels the response from the customers have been very positive. 4/16/2017

74 Availability guarantee options
Turbine Module(s) stored at site 97% Resident engineer during the first year of operation 2-shift working during overhauls Additional service visits in years when no maintenance activity is planned 96% Maintenance consumables, level C, stored at site Contingency spare parts for preventive maintenance Special tools stored at site Operation back-up spares stored at site Extended training Remote connection from Siemens to local control room 94% Det är företagets policy att kunna erbjuda tillgänglighetsgarantier, under förutsättning att företaget har en möjlighet att genom ett O&M-avtal aktivt kunna påverka drift och dagligt underhåll. Som ett svar på kundkrav och nuvarande konkurrenssituation är företaget berett att acceptera krav på tillgänglighetsgarantier 4/16/2017

75 Please address all correspondence to:
Siemens Industrial Turbomachinery AB SE FINSPONG © Siemens Industrial Turbomachinery AB No part of this document may be reproduced or transmitted in any form or by any means, including photocopying and recording without the written permission of Siemens Industrial Turbomachinery AB 4/16/2017


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