Turbo-compressor TEK-3200/3300/3400. RCM study. Client: PTTEP

Transcription

1 Turbo-compressor TEK-3200/3300/3400 RCM study Client: PTTEP Reported by Santi Songkunlertchai Manorom Chiewpanich This presentation Services & is Solutions for overview Co., Ltd only. Full report contains 98 pages. Project Ref No : , PTTEP Ref No. SO... Page 1

2 Contents 1. Summary 2. Introduction This 3. Work presentation scope is for overview only. Full report contains 98 pages. 4. Details 5. Maintainable item and interval and maintenance technique This 6. Manpower presentation and is for Resources overview only. Full report contains 98 pages. 7. Attachments Project Ref No : , PTTEP Ref No. SO... Page 2

3 Distribution 8. to the public can not be made without the permission from PTTEP. 1. Summary The summary This below presentation indicates is the for major overview findings only. only. Full report contains 98 pages. 1.1 It Distribution found that to the the current public job can card not is be not made full-fill without the maintenance the permission activities. from PTTEP. Job card shall drilldown to activities and maintenance item level (sub-skid level) as per the result of this RCM. 1.2 Online washing This presentation should be is introduced for overview to Gas only. Producer Full report in order contains to extend 98 pages. the crank wash interval. 1.3 To eliminate wax-gum cumulative at dry gas seal, the source of buffer gas shall be offtaken from the final discharge downstream of the after cooler. 1.4 Dry gas seal replacement interval shall be extended and based on condition base instead of time base. 1.5 Online washing should be introduced to compressor. Rigorous study shall be conducted to prevent dry gas seal damage during on-line wash. 1.6 Power augmentation should be introduced to gain the gas export. 1.7 Anti-surge Distribution function to the shall public be can tested-stimulated not be made without as regular the basis. permission from PTTEP. 1.8 To increase the system availability, TT-3320 function should be changed from shutdown to alarm only. 1.9 Each compression This presentation string, is it for is found overview that only. the total Full maintenance report contains cost 98 with pages. lost time for maintenance Distribution will to the be 76 public million can Baht not be per made year without the permission from PTTEP Each compression string, it is found that the minimum total production lost with out maintenance will be 487 million Baht per year, Maximum: 8000 million Baht per year 1.11 It can pointed that the average recovery time from breakdown should be 12 hours at the lost of revenue at 25% of each of gas compression string. Distribution to the public can not be made without Baht the per permission with from product PTTEP. Cost from maintenance activities year lost Baht per (parts Min production lost w/o maintenance year included) Max breakdown This presentation cost with production is for overview only. Full report Baht per contains 98 pages. lost year RAM 2 A 0,5 Project Ref No : , PTTEP Ref No. SO... Page 3

4 2. Introduction This report was made according the PTTEP Service Order No.to conduct the RCM study using This presentation the combination is for of overview FMEA* only. (Failure Full Mode report Effective contains Analysis) 98 pages. technique and FMECA* Distribution (Failure to the Mode public Effective can not be Critical made Analysis*) without the permission from PTTEP. * Developed by Co., Ltd Project Ref No : , PTTEP Ref No. SO... Page 4

5 3. Work scope The study cover the gas turbine driving export gas compressor for one unit only (three units are identical), This presentation and partly is of for fuel overview gas system only. (full Full scale report RCM contains study 98 of fuel pages. gas system is separated) Distribution as per to the sketch. public can not be made without the permission from PTTEP. Distribution to the public can not Mbe made without the permission M from PTTEP. Fuel gas Gas supply system Project Ref No : , PTTEP Ref No. SO... Page 5

6 4. Details 4.1 This RCM study is based on: This MTTR presentation (Mean Time is for To overview Repair) is only. not including Full report the contains lead time 98 pages. of the work Distribution preparation to the or public spare can part. not be made without the permission from PTTEP Repair or replace process is based on spare module, assembly available e.g. starter, electric motor, gas producer module, etc On condition maintenance covers on-line and off-line and occasion Distribution to On-line the public maintenance can not be consists made without of all operating/process the permission from parameters, PTTEP. vibration analysis, oil analysis (RBOT), thermo-graphic, emission analysis, strain measurement, UTM, Pulse eddy current, and including visual external inspection. Off-line maintenance consists of all internal inspection, pressure test, geometric measurement, NDT, function test / calibration, Etc which requires to shutdown the system. Occasion maintenance is maintenance activity that schedule to be aligned This presentation with scheduled is for off-line overview maintenance. only. Full report contains 98 pages Distribution Unplanned to the shows public in can RCM not study be made as breakdown without the maintenance permission from PTTEP Scheduled maintenance (either overhaul or replacement) interval is pre-fixed in master plan. This The firmed presentation schedule is for maintenance overview only. will Full be based report on contains the condition 98 pages. assessment which Distribution should to be the implemented public can 3-6 not be months made ahead without from the the permission pre-fixed from schedule PTTEP. using the projection/prediction technique This Operating presentation context: is for overview only. Full report contains 98 pages. Turbo-compressor function (TEK-3200/3300/3400) All three compressors are installed at PP to deliver gas from separation process to Erawan platform as 33,3 % x 3 duty. Distribution Custodian the transfer public is can made not at be PP made via without flow-computer. the permission from PTTEP. Operating condition First stage Inlet parameter This Pressure, presentation Barg : 23,1 is for (mean) overview max only. 24, min Full 23,0 report contains 98 pages. Distribution Inlet temp, to the C public : 24,4 can (mean), not be max made 25,6 without the permission from PTTEP. MW 26,05 kg/kmol Compressibility: 0,92 (inlet) See gas compositions attached This Operating presentation speed, is rpm: for overview only. range Full report contains 98 pages. Project Ref No : , PTTEP Ref No. SO... Page 6

7 Distribution First stage to the discharge public can not be made without the permission from PTTEP. This Second presentation stage Inlet is for parameter overview only. Full report contains 98 pages. Distribution Pressure, to the Barg: public 54, 1 can (mean) not be max, made min without the permission from PTTEP. Inlet temp, C: 50,8 (mean), max MW: 26,05 kg/kmol Compressibility: 0,865(inlet) This See gas presentation compositions is for attached overview only. Full report contains 98 pages. Distribution Operating to the speed, public rpm: can not be made range without the permission from PTTEP. This Delivery presentation agreement, is for penalty overview only. Full report contains 98 pages. Distribution Guarantee to the point public at delivery can not be at 630 made MMscfd without (max) the permission from PTTEP. Each compressor train comprise of: LM-2500 gas turbine This PG-25 presentation power turbine is for overview only. Full report contains 98 pages. Distribution NP: 2BCL-608, to the public compressor, can not be internal made without combine the stage permission (1+2), from PTTEP. LM-2500 Requires fuel gas: 7780kg/h (max) at 31 barg Project Ref No : , PTTEP Ref No. SO... Page 7 Pressure, barg: 56,3 Temp, C: 99,9 Second stage discharge Pressure, barg: 108,2 (mean), 112 (max) This Temp, presentation C: 119,8 is for overview only. Full report contains 98 pages. Total Reliability and availability Reliability: 99 % Availability: 95 % Distribution Each of to gas the compression public can not train be made without the permission from PTTEP. Availability: 98,5 % Reliability: unable to pinpoint due to insufficient information. Lubrication system GG uses synthetic oil: Mobil and TOTAL, VG-32 This PG & presentation comp used is mineral for overview oil: TOTAL only. VG-32 Full report contains 98 pages. Seal system Dry gas seal: John crane T28AT Tandem arrangement This Buffer presentation stage 1: Process is for overview gas only. Full report contains 98 pages. Distribution Buffer to stage the 2: public Instrument can not air be made without the permission from PTTEP.

8 Distribution NP-2BCL-608 to the public can not be made without the permission from PTTEP. Each train, inlet gas before reaching gas compressor train has to be knock-out inlet liquid at suction scrubber. This After presentation 1 st stage compression: is for overview 99,9 only. deg C Full will report be cooled contains by 198 st air/gas pages. cooler (A3230) Distribution to 52,4 to deg the C. public can not be made without the permission from PTTEP. At 2 nd stage, inlet stream will be combined with side stream at 54,1 Barg at 50,8 deg C. prior reaching 2 nd comp unit, gas will be scrubbed by 2 nd KO (D-3240) Distribution Final outlet to the from public 2nd can compressor: not be made 108 without barg at the 119 permission deg C will from be cooled PTTEP. down via air / gas cooler (A3260) at 107,2 barg at 50 deg C Primary and secondary functions Distribution As described, to the RCM public is based can not on FMEA be made technique. without the Primary permission & secondary from PTTEP. functions are determined from the above operating context as: Cost critical analysis is based on: In addition, This the total presentation production is for loss overview of 28,013,400 only. Full million report Baht contains is base 98 on pages. the penalty if no totalsale after Distribution 24 hours to with the the public loss can of sale not opportunity be made without of 5% the interest permission from PTTEP. Parts and material cost is specified in each of failure mode individually. Project Ref No : , PTTEP Ref No. SO... Page 8

9 4.1.9 Risk Assessment Risk assessment is quantified using the specific Risk Matrix and failure consequences which is developed to suit PTTEP business as: Distribution to the public can not be made without the permission Risk from Assessment PTTEP. Matrix Production losses 25% 50% 75% 100% A B C D Evident but no effects on HSE, environment This presentation of operation is for overview Mildonly. Full 72 report h contains 1 98 pages. Evident degraded operation Distribution capacity, No effects to on the HSEpublic can not be made without 12 the h permission 2 from PTTEP. Hidden degraded asap 3 Evident safety and/or environment hazard Lost of life HSE 4 Hidden safety and/or environment hazard Distribution to the public can not be Sample made Coding without 1B0.5 the permission from PTTEP. 1 No effect to HSE B Cause production lost 50% 0,5 Probability occure 1 in every 2 years Distribution to the public can not be made without 4A0.25 the permission from PTTEP. 4 Potential to lost of life or injure A Cause production lost 25% 0,25 Probability occure 1 in every 4 years Project Ref No : , PTTEP Ref No. SO... Page 9

10 Distribution On Condition to the public Maintenance can not be (OCM) made without has to be the corporate permission with from "Incipient PTTEP. failure" failure mode only. The cost of OCM is based on person(s) who carry out the On Condition Monitoring and assessment only. This The subsequent presentation "scheduled is for overview maintenance only. Full cost report is not contains considered 98 pages. on this maintenance Distribution task category. to the public can not be made without the permission from PTTEP. It is recommended that NON RECURRING MAINTENANCE & BUDGET should be reserved. This "Scheduled presentation Overhaul is for (SO)" overview will be only. carried Full report out when contains it gives 98 the pages. lowest cost without Distribution effects to the HSE public can not be made without the permission from PTTEP. The cost of SO is base on the total OCM cost (assuming equivalent to the total manhour requirement for SO) plus spare parts divided by MTBF plus the cost of Loss & Deferment Distribution "Schedule to the Replacement public can not (SR)" be made will be without carried the out permission when it gives from the PTTEP. lowest cost without effects to HSE. The cost of SR is base on the total OCM cost (assuming equivalent to the total manhour requirement for SR) plus equipment cost divided by MTBF plus the cost of This Loss presentation & Deferment is divided for overview by 3 only. Full report contains 98 pages. "Failure Finding (FF)" shall not corporate with "Incipient failure mode" The cost of FF is based on person(s) who carry out the FUNCTION TEST only. The subsequent "scheduled maintenance" cost is not considered on this maintenance task category It is recommended that NON RECURRING MAINTENANCE & BUDGET should be reserved. This "Corrective presentation Maintenance is for overview (CM)" will only. be Full carried report out contains when it 98 gives pages. the lowest cost Distribution without to effects the public to HSE can not be made without the permission from PTTEP. The cost of CM is based on SO cost and further biased with the rejection value of the failure probability. This "Redesign presentation (RD)" is will for be overview commenced only. when Full report all above contains are not 98 applicable pages. Distribution The cost to of the RD public is based can not on the be made equipment without cost the divided permission by the from useful PTTEP. life multiplied by 3 Component corrosion can be applied with this RCM as "Inspection" to be used as "FF" Project Ref No : , PTTEP Ref No. SO... Page Maintenance strategy Maintenance strategy decision is based on the lowest quantified cost amongst tasks categories which the methodology is made differently as:

11 Distribution Failure to Characteristic the public can not Analysis be made without the permission from PTTEP. Each of failure modes is classified to the 1 of the six failure pattern shown. Any failure This presentation mode that the is for history overview could only. be traced, Full report the maintenance contains 98 interval pages. can be Distribution allocated naturally. to the public can not be made without the permission from PTTEP. Any failure mode that history could not be traced, the failure pattern and predicted useful life and trouble free life and the potential to failure are model in Weibull curve as the function This of: presentation is for overview only. Full report contains 98 pages. Project Ref No : , PTTEP Ref No. SO... Page 11

12 Figure Distribution 1 to the public can not be made without the permission from PTTEP. Project Ref No : , PTTEP Ref No. SO... Page 12

13 Function and failure mode Primary/secondary function To deliver gas at 210 MMscfd at the operating condition Function failure Failure mode Gas compressor low performance This presentation is for overview only. Contaminates Full report in synthetic contains oil degradation 98 pages. or oxidation. GG bearing failure due to lubrication degradation GG blades fails from foreign object GG low performance from Inlet filter blockage GG unable to operated at desire speed/power XV42215 S/d/ VV, fails to stuck open or controller XV42211 due to loss of instrument air This presentation is for overview only. T5 Full report spread contains due to thermocouples 98 pages. deteriorated blade coating damaged. Distribution to the public can not be made PDSH42171 without the permission from PTTEP. T42130 (oil/air separator) damaged or clogged up GG unable to start on demand due to starting system failed This presentation is for overview only. Full report contains 98 pages. Project Ref No : , PTTEP Ref No. SO... Page 13 Fouling develop at compressor rotor High vibration due foreign objects to GG from corrosion on vane mist separator, air intake and exhaust ducts GG compressor blade fouling TE High ambient temp, leads to low mass rate Fuel gas blockage (offskid) FV44220 Control VV, fails close due to controller XV42225 fails to function, Loss of fuel gas supply from FV42220, TE Strainer (inlet fuel gas to GG) blockage LSHH42211 not activate or stuck SDV42200 PSV42210 passing XV42211 TE VSV control out of tolerances TE Corrosion cracks on compressor blades or ARV42162 clogged up PSV42160 passing PSV42110 passing PDSL42713 & 15 TS3200 Gas starter failure TE Starting gas turbine regulating valve system

14 Function failure Insufficient cooling and lubricating GG, PT and compressor bearings. Failure mode A42145 & A Cooling fan bearing failure. Insufficient hydraulic oil supply to system Insufficient lube oil to cool and lubricate GG, PT and compressor bearings. Insufficient lube oil to cooling and lubricating compressor and power turbine bearings. A42145 & A Transmission belt or pulleys failure. P42160 hydraulic pump failure A42145 & A Cooling fan failure. P42850 Filter blockage on discharge of cool down pump Distribution to the public can not be made PDI42855 without incorrect the reading permission at low side from PTTEP. Insufficient lube oil to lubricate and cool GG, PT and compressor bearings. TSH42823 M42820, 25 cooler fan motor bearing failure This presentation is for overview only. TE3200 Full - P42110 report synthetic contains oil pump 98 failure pages. Distribution to the public can not be made TE3200 without - P the permission Scavenge pumps from failure PTTEP. Insufficient lube oil to lubricate and cool GG bearings. PSV42246 passing TCV42147 A42145 & A42820 oil cooler fouling This presentation is for overview only. M 42820, Full M report bearing contains failure 98 pages. Insufficient lube oil supply to cool and lubricate compressor bearings PCV42840 TV42821 M42850 bearing failure P42850 bearing failure Insufficient lube oil supply to cool and lubricate compressor bearings. Poor GG compression performance due to insufficient off-line cleaning on compressor blades M42805 bearing failure PCV42813 PT or compressor bearing failure due to lubrication degradation P42610, water wash pump failure M42610 bearing failure, water wash pump T42605 & T42600 tanks corroded or deposit in tanks. Deposits on H42605 heater or heater poor performance This presentation is for overview only. oxidation. Full report contains 98 pages. Unable to operate compressor on demand Unable to operate compressor on demand due to high temp lube oil. Unable to produce at the optimum point Contaminates in lube oil, mineral oil degradation or XV3221 A42820 Lube oil cooler fouling. This presentation is for overview only. PSL42812 Full not report activated contains 98 pages. Unable to run compressor continuously due to both lube oil pumps not functioned. FV3220 (1st stage anti-surge valve) Project Ref No : , PTTEP Ref No. SO... Page 14

15 Failure mode P F42830 & F42835 filter blockage PDSH not activated TE3200-M42500(AC) bearing failure TE3200-M42502 (DC) bearing failure. TE3200-FDP42500 stuck closed TSHH42502 TE3200-FSL42500 PDSHH42501 PDSL42508 TE3200-FDP42503 stuck closed TCP system Blockage in primary or secondary DGS vent lines This presentation is for overview standby only. filter. Full report contains 98 pages. Distribution No status to on the lube public oil filter can not If be not made switch without over the permission E-Hidden from PTTEP. degraded This presentation is for overview trip. only. Full report contains 98 pages. Distribution Low pressure to the alarm public and can not In be case made motor without the permission E-Hidden from PTTEP. degraded This ventilation presentation for cooling in is for overview enclosure only. room Full report contains 98 pages. enclosure room when GG may cause failure Erratic signal may cause This presentation is for overview alternatively. only. Full report contains 98 pages. Distribution If over activated to the public fault, it cause can not be made without the permission E-Hidden from PTTEP. degraded This presentation is for overview may cause only. GG Full report contains 98 pages. trip. This GG trip presentation or can not start is up for overview only. Full report contains C-Evident 98 pages. degraded Project Ref No : , PTTEP Ref No. SO... Page 32 Local & System effect-1 Insufficient lube oil supply may cause high bearing temp trip. blockage is presented. activated standby ventilation fan running, in worse case possible high temp in enclosure room trip. If loss of AC power, insufficient shutdown. Low pressure alarm and activated standby ventilation fan running. compressor trip. Improper ventilation fan operation can not be presented. GG erratic trip. When ventilation fan fault, no signal to start standby vent fan. High pressure in enclosure room. Insufficient cooling on DGS face, heat up to cause DGS failure. Local & System effect-2 However, PDSH42831 activated alarm, operator need to switch over to standby filter in a proper time, insufficient lube oil supply may cause high bearing temp overload trip, standby fan will start automatically. High temp in on instrumentation. High temp in enclosure room can be presented High temp in enclosure room High temp in enclosure room may cause GG trip. Compressor trip. Local & System effect-3 Consequence and Category C-Evident degraded operation capacity, No effects on HSE operation capacity, No effects on HSE C-Evident degraded operation capacity, No effects on HSE Recovery, class Severity class 2 A 3 No 3 No 2 D 2 C

16 Failure mode DGS failure due to deterioration buffer gas Local & System effect-1 Local & System effect-2 Local & System effect-3 Consequence and Category Distribution Compressor to the trip. public can not be made without the permission C-Evident from degraded PTTEP. operation capacity, No effects on HSE Recovery, class Severity class 2 D Buffer fuel gas supply blockage due to strainer or check valve plugged. PDCV42710 PCV42725 No instrument air supply to DGS due to orifice plate plugged PDT42710 PDSL activated alarm. Dirt from process gas may pass to DGS and This presentation is cause for overview primary DGS only. Full report contains 98 pages. failure. Operators have to open bypass valve immediately. Dirt from process gas may pass to DGS and cause primary DGS failure. This Stuck presentation open, is Stuck for overview closed, buffer only. Full report contains E-Hidden 98 pages. degraded Distribution PSH44725 to activated the public gas can may not leak be to made 2nd without the permission from PTTEP. alarm. Loss instrument air. PDSL44713 & 14 activated alarm. seal and gas contaminated lube oil. Stuck closed, buffer gas may leak to 2nd C-Evident degraded operation capacity, No effects This presentation is seal for and overview gas only. Full report contains 98 HSE pages. contaminated lube oil. Improper control clean gas to against process gas leak to DGS 3 C 2 A PDSL42710 SDV3214 If not activated when This true, it presentation may cause no is for overview only. Full report contains 98 pages. Distribution immediate to action the public to can not be made without the permission from PTTEP. verify the problem. If stuck closed, high liquid level (LAHH3211) may If stuck open, LV3214 (automatic closed drain to 2nd stg This cause presentation compressor trip. is separator) for overview and closed only. Full report contains 98 pages. drain header lines can be closed by manual valves. 3 D P42850 mech seal leakage LSL42801 Igniter failure El3222, El3252 (discharge check valve) and station valve stuck opened Lube oil spill to atm may cause fire. B-Evident safety and/or environment hazard If stuck high and If stuck low, during actual low level, it may cause lube oil pump run dry until motor trip. compressor startup sequences, main lube oil pump can not start due to impermissive from lube oil level fault. Distribution No throughput to the due public to can not be made without the permission E-Hidden from degraded PTTEP. unable to operate Back pressure may cause compressor rotor reversal turning. Possible DGS damaged. Project Ref No : , PTTEP Ref No. SO... Page 33 4 A 3 D 3 D

17 Failure mode PSH42844 not activated TSHH Local & System effect-1 Local & System effect-2 Local & System effect-3 Consequence and Category Distribution Not signal to to the stop public cool can not be made without the permission E-Hidden from degraded PTTEP. down pump, it may cause hot pump running if not stop by manual. This Possibly presentation damage or is for overview only. Full report contains E-Hidden 98 pages. degraded burn instruments and Distribution controls. to the public can not be made without the permission from PTTEP. Recovery, class Severity class 3 No 5. Maintainable item and interval and maintenance technique Interval On line Resource Maintenance Work description Distribution Off line to the public can strategy not be made without the permission from PTTEP. Tag Occasion daily On line Prod On condition maint 1) Since it is A/B/C/D arrangement, to Fuel filter skid monitor and switchover is normal practice. 2) While switchover, replacement filter is a must. 3) However, Distribution to the public can not be made there without are automatic the permission control valves from to PTTEP. open a bypass line across the filters when blockage. daily On line Prod On condition maint Walk around observe for noise & temp PSV-3210 daily This presentation is for overview only. profile Full from report passing contains 98 pages. On line Prod On condition maint Daily, verify that no passing leak of anti FV-3220 Distribution to the public can not be made surge without valve the at normal permission operation from PTTEP. daily On line Prod On condition maint Daily check& record lube oil temp and PSV pressure. monthly On line Prod On condition maint 1) Monthly measure record fuel gas TE Fuel gas daily This presentation is for overview only. pressure Full report contains 98 pages. strainer On line Mech On condition maint 1) Walk around to observe noise of icing XV from high gas flow 2) Visual check at valve stem position 3) Recommend to install work instruction at local. daily On line Mech On condition maint Monitor & record lube oil pressure P This presentation is for overview only. (PI42125) Full report and temp contains (TE42121). 98 pages. PI TE daily On line Mech On condition maint Monitor & record oil sump temp and P sump discharge pressure. P P P daily On line This presentation Mech On is for condition overview maint only. Monitor Full & report trending contains diff. temp 98 between pages. A Distribution to the public can not be made TI without and the TI permission from PTTEP. TI TI daily On line Mech On condition maint Monitor PDI and PI in P order to verify hydraulic pump problem. PSV PDI PI Project Ref No : , PTTEP Ref No. SO... Page 34

18 Interval Distribution On line Resource to the public Maintenance can not be made without Work the permission description from PTTEP. Tag Off line strategy Occasion 4 years Occasion Instr Failure finding Clean, check calibration and function LAHH-3241 test on Occasion planned inherently with LG-3243 This presentation is for overview only. half Full life inspection. report contains 98 pages. 4 years Occasion Distribution to Instr the public Failure can not finding be made Occasion without planned the permission inherently with from half PTTEP. SDV-3241 life inspection, check calibration and SDV-3242 function test. 4 years Occasion Instr Failure finding Occasion planned inherently with half FV-3250 life inspection, check calibration and FE-3250 This presentation is for overview only. function Full test. report contains 98 pages. 4 years Occasion Distribution to Instr the public Failure can not finding be made Occasion without Check the permission calibration and from function PTTEP. SDV-3211 test. FT-3200 Project Ref No : , PTTEP Ref No. SO... Page 42 4 years Occasion Instr Failure finding Occasion planned inherently with half life inspection, clean and check calibration. 4 years Occasion This presentation Instr is Failure for overview finding only. Occasion Full report planned contains inherently 98 with pages. half PT Distribution to the public can not be made life without inspection, the check permission calibration from and PTTEP. PSL function test. PAL PI PI years Occasion Instr Failure finding Occasion planned inherently with half PSL This presentation is for overview only. life inspection, Full report check contains calibration 98 pages. and Distribution to the public can not be made function without test. the permission from PTTEP. PSH years Occasion Instr Failure finding Occasion planned inherently with half life inspection, check calibration and function test. 4 years Occasion Instr Scheduled overhaul 1) Operation inherent indicates the status FDP This presentation is for overview only. 2) Occasion Full report to lubricate contains the 98 moving pages. FDP Distribution to the public can not be made parts without and function the permission test from PTTEP. FDP SOV SOV SOV years Occasion Instr Failure finding Occasion planned inherently with half TSHH This presentation is for overview only. life inspection, Full report check contains calibration 98 pages. and TSH Distribution to the public can not be made function without test. the permission from PTTEP. 4 years Occasion Instr Failure finding Occasion planned inherently with half FSL life inspection, check calibration and FSL function test. FSL years Occasion Instr Failure finding Occasion planned inherently with half PDSH This presentation is for overview only. life inspection, Full report check contains calibration 98 pages. and PDSHH Distribution to the public can not be made function without test. the permission from PTTEP. PDSHH years Occasion Instr Failure finding 1) Occasion planned inherently with half PDSL life inspection, check calibration and PDI function test. 4 years Occasion Instr Scheduled overhaul 1) Occasion planned inherently with half FDP This presentation is for overview only. life inspection, Full report check contains calibration 98 pages. and FDP Distribution to the public can not be made function without test. the 2) permission Lubricate moving from parts PTTEP. SOV and function test SOV PSV years Occasion Instr On condition maint Clean, disassemble to inspect and replace damaged parts Calibration test as 8 years required as standard RV certification. Occasion Instr Scheduled overhaul Occasion planned inherently with half PSV-42210

19 Interval Distribution On line Resource to the public Maintenance can not be made without Work the permission description from PTTEP. Tag Off line strategy Occasion 8 years Occasion Specialist On condition maint Occasion planned inherently with half D-3210 life inspection; perform internal cleaning D-3240 This presentation is for overview only. and Full inspection report (RBI, contains check wall 98 pages. Distribution to the public can not be made thickness without and the corrosion permission rate, etc.). from PTTEP. 8 years Occasion Specialist On condition maint Visual inspection and clean if necessary T years Off line Specialist Scheduled Exchange GG, Inherently, inspect Gas generator replacement power turbine for life assessment 8 years Occasion GE On condition maint Life assessment during Power turbine This presentation is for overview only. removing/exchange Full report contains GG 98 pages. 10 years Distribution Off line to Instr the public can Redesign not be made Redesign without to the alarm permission instead of shutdown from PTTEP. TT-3220 TI years Off line Specialist Redesign Redesign to relocate buffer gas off-take DGS point to the final discharge line 10 years Off line Specialist Redesign Consider to cool inlet air temp or steam Gas generator This presentation is for overview only. injection Full as report power contains augmentation 98 pages. 10 years Distribution Off line Specialist to the public can Redesign not be made Redesign without online the permission water wash to from extend PTTEP. TE-3200 off line water wash interval K-3200-Compressor 10 years Off line Specialist Redesign Redesign gas compressor on line washing using ZOC Manpower and Resources Estimated manpower This presentation and resources is for overview for each turbocompressor only. Full report contains loop of pages. years life cycle are as follows: Turbocompressor Avg. Man-hr/year (loop of 8-10 years (only one unit - TEK3200): life cycle) Prod Mech Elect 7.8 Instr Specialist Note: Manpower will be based on estimated effective work only (not included preparation, downtime and contingency works). 4 years interval will be turnaround period that may be extended to 5-6 years. Project Ref No : , PTTEP Ref No. SO... Page 45

20 7. Attachments All information of Turbocompressor - RCM had been kept in a spread sheet (Excel file). Additionally This concerned presentation information is overview also kept only. together Full in report the same contains CD 98 addressed pages. to PTTEP accordingly. - Drawings: PFD, P&ID - Data Sheets: Gas Turbine & Compressor - Drawings: Schematic Diagrams (LM2500 & NP compressor) - Cross-sectional drawings: Gas turbine & Compressor - Daily Log Sheets - Lube This Oil presentation Analysis is for overview only. Full report contains 98 pages. - GT Compressor Cleaning Project Ref No : , PTTEP Ref No. SO... Page 46