Technical Field Advisor to provide owner representation for the outage as described below.- Work in parallel with the contractor lead to maintain clear communication with HPU.- Provide technical review/witness of critical data points and inspections.- Provide daily reports of outage progress/issues.- Provide a final report at outage completion.Plant Information:Saavi, La Rosita 1 Steam TurbineBaja California/Mexicali, MexicoUnit Information:Alstom 292MW ZZ3 o SNGM01171GEN Alstom 60WT21H-102 hydrogen cooled. Proposed Schedule:08 JAN 27 – 19 FEB 27Work Scope: 1. TurbineDisassembly of lagging, casings, shells, blades, vanes, etc.Inspection and NDT of turbine casing, rotor, blades, diaphragms, guide vanes, bearings,coupling and sealing on turbine. Ensure all opening and closing measurements are taken andrecorded properly.Blast clean turbine rotors, visually inspect, record conditions, mag particle NDE, low speed rotorbalance, reinstall rotors, perform rotor alignment checks and record rotor clearancesInspection and NDT of inlet steam valves, extraction valves, Non-Return ValvesDisassemble steam side for inspectionVisually inspect disc, seat and strainer (NDE seal weld)Perform contact check on seats and discsRecord clearance and run out of stemClean stems and bushings and record clearances; reassembleVisually inspect disc, seat and strainer (NDE seal weld)Inspection of valves, actuators, strainers for gland- and leak-off systeminspection of valves, pumps, motors, filters, coolers, servomotors, for lube and hydraulic oilsystem.Inspection of heat exchangers and condensers in turbine auxiliary systemReassemblySupply and install all STG Soft-parts2. Turbine ControlsSteam Valves Hydraulic ActuatorsExternal, visual inspection of operating actuatorsReplace rod seals and wipers if necessaryInspect and change servo strainersHydraulic Pumping System(Owner will drain and refill tank.)Inspect and charge accumulators.Check pump operations and motor alignment.Clean compensators.Check and adjust relief valves as required.Change filters, clean screens, reset indicators.Clean and leak check EHC coolersInspect air dryer, recharge if necessary.Turbine Control Componentsi. Visually inspect linkage and adjust.Check and adjust oil trip nozzle.Clean and set gap on speed pickups.Clean and inspect thrust bearing wear detector.Stroke and check calibration of turbine stop and control valves.



(In conjunction with customer I & C)Inspect and clean low bearing pressure trip relay.d. Supply and install all STG Soft-partsLube Oil SystemOwner will drain and refill oil tankClean and inspect oil tankMain oil pump: Disassemble, clean, inspect, record clearances and conditions and reassembleRemove cooler heads, clean tube sheets and tubes with brushes, inspect and reassembleAuxiliary oil pumps: Disassemble pumps, clean, visually inspect, record clearance and conditionsand reassemble (motor inspection not included)Supply and install all STG Soft-partsTurning GearExamine gears for wear and condition, clean and check operation (motor inspection not included)Supply and install all STG Soft-partsSteam Seal System (Responsibility of owner)a. TFA will provide technical support for the following:Steam Seal Regulator ValvesDisassemble and visually inspect pilot steam side of valve, piston and cylinderDisassemble bellows and pivot rod and inspectDisassemble feed and dump valves and inspectReassemble and check adjust as requiredSpray Chamber (Hood spray)Disassemble, clean and inspect inlet water nozzle and strainerAdjust butterfly valves (customer scope)Gland ExhausterDisassemble blower, clean, inspect, record clearances and conditions and reassemble (motor inspection not included)Remove gland condenser headClean tubes by wire brushSupply and install of all steam seal system partsTurbine Supervisory Instrumentationa. Visually inspect and check calibration and functionality calibrate devices.9. Pre—Start And Operational Checksa. Startup support will include 24 hours of support on two shifts for 24 hours after the release ofLOTO.10. Steam Turbine Generator Major Inspection (Hydrogen Cooled Generator)a. Pre—shutdown ChecksThe following Will be checked and recorded prior to shut down (TO be performed byCSM if additional Contractor personnel is not on site):Visually check insulated bearings.Recurring problems and discrepancies reviewPresent annunciator dropsOperating dataReview active customer information lettersvii.



Test the reverse power relay trip functionOptions:viii. Coast down measurement according to current test procedureMobilizeMarshal tools and equipment adjacent to the unit.Establish work crews.Prepare site for work.Conduct site safety meeting.Remove LaggingUpper end shield laggingUpper cooler dome laggingDisassemble GeneratorDisassemble journal bearings, visually inspect, record clearances and condition,including ball seat contact and pinch checks.Disassemble oil deflectors and hydrogen seals.Disassemble end shield piping.Disassemble/remove collector brush holder rigging.Remove end shields and generator field.Remove stator cooler heads.InspectionAll results will be recorded on standard inspection forms.Visually Inspect/Clean the following:BearingsOil deflectorsHydrogen sealsHydrogen Coolers (brush cleaning of inside of the tubes only)Generator fieldStator cooling air sealAir chamber seals inspectionEnd winding support & insulationPhase rings, leads and overhang insulationGenerator HousingTangential spacersBrush Bridge Insulation resistancesNote: Any repairs or replacement of the components above will be performed as Additional f. Assemble GeneratorInstall stator cooler heads.Generator fieldbearingsOil deflectorsEnd shieldsCollector brush riggingSupply and install all STG Soft-partsAssemble Lagging1. Upper end shield lagging2. Stator cooler dome lagging and Operational Checksg. Pre—Starti. Check slow roll operation.ii. Record start-up and operational data.DemobilizeClean up the work area to a condition similar to that in which it was found.Remove tools.Reporti. A final report of the inspection, including; conditions found, work performed, inspection data, clearance data, operational data, recommendations, and spare and renewal program parts, will be prepared and submitted in accordance with the Appendix 9.Machine #4 bearing journal to restore the surface finish. o ProvidethisasanoptionalT&Mestimate.Notes;:Unless otherwise noted insulation, scaffold, office space, break rooms and ablution facilities will be provided by the client.A Quality Plan with identified witness and/or hold points must be submitted for approval 30 days previous to the outage start by PSG.A detailed outage scheduled shall be provided by PSG 30 days previous to the outage.Final written outage report will be submitted to PSM within 30 days of outage completion.#J-18808-Ljbffr

📌 Steam Turbine Technical Field Advisor (Mexicali)
🏢 ON GRID INFRASTRUCTURE SERVICES
📍 Mexicali