# Quellmoor Ridge O&M wiki > Operations and maintenance of an onshore wind farm: OEM manuals and service bulletins, procedures and work instructions, incident and change records, maintenance, stock and SCADA data, laboratory and inspection reports, permits and grid instructions, training decks, correspondence, field notes and meeting records. ## Start here - [Home](index.md): how to navigate this wiki - [Agent guide](AGENTS.md): page types, citation rules, skills and tools - [Glossary](glossary.md): acronyms and multilingual synonyms - [Log](log.md): recent changes ## Topics - [Blades, pitch bearings and main-component lifts](topics/blades-and-rotor.md): This page covers blade condition, pitch-bearing bolt re-torque, and crane lifts for blade replacement at Quellmoor Ridge Wind Farm. - [Cold-climate operation and icing](topics/cold-climate-operation.md): This page covers cold-weather operation, icing controls, gearbox oil heating, and winter access safety at Quellmoor Ridge. - [Environmental permit and night curtailment](topics/environmental-compliance.md): This page covers environmental permit conditions and turbine curtailment for Quellmoor Ridge Wind Farm. - [Gearbox lubrication and oil changes](topics/gearbox-lubrication.md): This page covers gearbox lubricant requirements, oil-change procedures, level checks, maintenance tasks, and related condition findings. - [Gearbox temperature, vibration and oil analysis](topics/gearbox-condition-monitoring.md): This page covers gearbox lubrication, temperature alarms, cooling performance, vibration trends, oil analysis, and bearing condition monitoring for the LT-32 fleet. - [Generator brushes and electrical systems](topics/generator-and-electrical.md): This page covers generator brush maintenance, slip-ring work, generator temperatures, and electrical alarms for the wind farm turbines. - [Grid connection and grid operator instructions](topics/grid-operations.md): This page covers the site grid connection, grid operator curtailment instructions, export limits, and related SCADA evidence. - [Safety, isolation and work at height](topics/safety-and-access.md): This page covers safety controls for isolation, permits, access, working at height, rescue, lifting, dropped objects and related audit actions at Quellmoor Ridge Wind Farm. - [Spare parts, stock levels and supply](topics/spare-parts-and-supply.md): This page covers spare-parts stock, purchase orders, expected deliveries, and work orders waiting for parts. - [Training, site rules and acronyms](topics/training-and-onboarding.md): This page covers onboarding, site rules, working-at-height training, toolbox talks and site acronyms. ## Entities - [A1001 Emergency stop activated](entities/alarm-code/a1001.md): A1001 Emergency stop activated is an alarm code in the reviewed registry. It was raised and cleared during maintenance on WTG-04 and WTG-11. - [A2101 Gearbox oil sump temperature high](entities/alarm-code/a2101.md): A2101 is the gearbox oil sump temperature high alarm, with a warning threshold of 75 °C. Its trip counterpart is A2102 at 82 °C. In SCADA logs, WTG-07 and WTG-11 raised A2101 at around 75 °C. - [A2102 Gearbox oil sump temperature trip](entities/alarm-code/a2102.md): A2102 Gearbox oil sump temperature trip is an alarm code for a gearbox oil sump temperature trip. It trips at 82 °C and stops the turbine automatically. The cooling circuit is inspected before restart, and the reset is not performed more than once without inspection. - [A2110 Gearbox HSS bearing temperature high](entities/alarm-code/a2110.md): A2110 is an alarm code for Gearbox HSS bearing temperature high. It is raised at 90 °C. In the SCADA log, WTG-02 recorded A2110 twice, with values of 91.2 °C on 2026-07-19 and 90.6 °C on 2026-07-22. - [A2120 Gearbox oil pressure low](entities/alarm-code/a2120.md): A2120 is an alarm code for gearbox oil pressure low. It is associated with a 0.8 bar alarm threshold. The alarm can occur after a cold start, and the listed causes include cold oil, pump fault, or a blocked filter. - [A2130 Gearbox oil level low](entities/alarm-code/a2130.md): A2130 is an alarm code for gearbox oil level low. If the gearbox oil level is below MIN, the turbine should not be restarted and the issue should be reported to the O&M Supervisor. - [A2140 Gearbox oil filter differential pressure high](entities/alarm-code/a2140.md): A2140 is the gearbox oil filter differential pressure high alarm. It is raised at 2.5 bar and can be caused by a clogged filter element or cold oil. The stated action is to replace filter element FGT-P-11872. - [A3201 Generator winding temperature high](entities/alarm-code/a3201.md): A3201 Generator winding temperature high is an alarm code. In the WTG-12 SCADA alarm and status log, it was raised at 147.3 °C and cleared at 139.5 °C on 2026-08-26. - [A3210 Generator brush wear limit reached](entities/alarm-code/a3210.md): A3210 is the alarm code for Generator brush wear limit reached. It appears when the remaining brush length reaches approximately 20 mm. Records for WTG-09 show the alarm was raised on 2026-07-16 and cleared on 2026-07-18, and the generator brushes were replaced under work order WO-26-0436. - [A4105 Pitch system fault](entities/alarm-code/a4105.md): A4105 Pitch system fault is an alarm code in the reviewed registry. In SCADA alarm and status logs, it was recorded on WTG-12, WTG-05, WTG-06, and WTG-10 with S510 Stopped - fault events. The logged values were 1 axis, 2 axis, and 3 axis. - [A5001 Yaw misalignment](entities/alarm-code/a5001.md): A5001 Yaw misalignment is an alarm code. It was raised and later cleared on WTG-11, WTG-02, WTG-06, and WTG-03 in the SCADA alarm and status log. - [A6101 Grid voltage out of range](entities/alarm-code/a6101.md): A6101 Grid voltage out of range is an alarm code recorded for WTG-01 through WTG-12 in the SCADA alarm and status log. The log shows A6101 alarms and corresponding S510 Stopped - fault status entries, with clear entries also recorded. - [A7001 Ice detected on rotor blades](entities/alarm-code/a7001.md): A7001 is an ice detection alarm for ice detected on rotor blades. It stops the turbine automatically when active. When ice is detected under A7001, there is no access within 300 m of a turbine. - [Adventure Works Industrial Supply](entities/organisation/adventure-works-industrial-supply.md): Adventure Works Industrial Supply is a supplier with a typical lead time of 2 weeks. - [AWI-10442](entities/part/awi-10442.md): AWI-10442 is a spare part associated with WTG-11. It is listed for a leaking hydraulic hose in the yaw brake circuit, and it is not stocked. - [AWI-20915](entities/part/awi-20915.md): AWI-20915 is the identifier for a spare part associated with the spill kit of WTG-12. It was noted as needing a refill. - [AWI-31007](entities/part/awi-31007.md): AWI-31007 is a spare part used as a tool tether set. It was used in work order WO-26-0203 for one unit under reference INC-2026-003. - [AWI-40210](entities/part/awi-40210.md): AWI-40210 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [AWI-40388](entities/part/awi-40388.md): AWI-40388 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [City Power & Light](entities/organisation/city-power-and-light.md): City Power & Light is a utility organisation connected to the Skelvane 132 kV substation and the Quellmoor Ridge Wind Farm site. Its Network Control issues curtailment instructions for planned network outages, including CPL-CI-2026-018. City Power & Light also announced July network works on the… - [Contoso Renewables](entities/organisation/contoso-renewables.md): Contoso Renewables is the permit holder for Quellmoor Ridge Wind Farm. It is also identified as the customer or owner on several current Quellmoor Ridge Wind Farm documents, including maintenance, asset, stock, and safety records. The company is described as operating 12 LT-32 turbines at… - [Fabrikam FGT-3200](entities/product/fgt-3200.md): The Fabrikam FGT-3200 is a three-stage gearbox used on Litware LT-32 turbines, with one planetary stage followed by two parallel helical stages. Its rated input torque is 2,410 kNm and its dry mass is 21.6 t. Only the lubricant listed in Table 4-2 is approved for the FGT-3200 gearbox, and… - [Fabrikam Getriebetechnik GmbH](entities/organisation/fabrikam-getriebetechnik.md): Fabrikam Getriebetechnik GmbH is a supplier of FGT-3200 gearboxes. Its supplier lead time was listed as 10 weeks. Fabrikam confirmed delivery of two HSS bearings and offered air freight for an extra EUR 2,300. - [FGT-P-11872](entities/part/fgt-p-11872.md): FGT-P-11872 is an oil filter element used in LT-32 gearbox maintenance. It is replaced during gearbox oil change and during conversion, and the filter housing cover screws are tightened to 85 Nm when it is replaced. The part is scheduled for replacement every 12 months, or at alarm A2140. - [FGT-P-11880](entities/part/fgt-p-11880.md): FGT-P-11880 is a spare part used as a breather. It must be replaced every 12 months. - [FGT-P-13010](entities/part/fgt-p-13010.md): FGT-P-13010 is an entity of type spare parts in the domain registry, mentioned in 2 source documents. - [FGT-P-14002](entities/part/fgt-p-14002.md): FGT-P-14002 is an entity of type spare parts in the domain registry, mentioned in 2 source documents. - [FGT-P-21904](entities/part/fgt-p-21904.md): FGT-P-21904 is an entity of type spare parts in the domain registry, mentioned in 2 source documents. - [FGT-P-22328](entities/part/fgt-p-22328.md): FGT-P-22328 is a spare part: the generator-side HSS bearing for FGT-3200. It is a critical item below minimum stock, with 0 on hand and 2 on order under PO-76994. The bearing is needed for work orders WO-26-0412 on WTG-07 and WO-26-0439 on WTG-02, and WO-26-0187 on WTG-10 already used one unit. - [FGT-P-22331](entities/part/fgt-p-22331.md): FGT-P-22331 is an entity of type spare parts in the domain registry, mentioned in 2 source documents. - [gearbox](entities/component/gearbox.md): A gearbox is a component used in LT-32 turbines and in the Fabrikam FGT-3200 three-stage gearbox. The LT-32 gearbox has an overall ratio of 1:118.4, a rated input torque of 2,410 kNm, and a dry mass of 21.6 t. Its lubrication system uses splash and forced lubrication, and the total oil volume is… - [gearbox oil heater](entities/component/gearbox-heater.md): gearbox oil heater is an entity of type components in the domain registry, mentioned in 4 source documents. - [generator](entities/component/generator.md): The generator is a wind turbine component used with a 690 V double-fed asynchronous generator system. It is driven at 1,500 rpm from the gearbox output shaft, with an overall gearbox ratio of 1:118.4 from a rotor speed of 12.7 rpm. Current records include generator brush inspections and… - [generator brushes](entities/component/generator-brushes.md): Generator brushes are a component used in Litware LT-32 wind turbines at the Quellmoor Ridge wind farm. Work order WO-26-0436 replaced the generator brushes on WTG-09 under WI-GEN-014 after alarm A3210. - [HSS bearing](entities/component/hss-bearing.md): The HSS bearing is a gearbox bearing on the generator side, identified in records as part FGT-P-22328. It is linked in the records to high temperature alarms, elevated vibration, wear, and spalling. The bearing is currently below minimum stock, with replacements on order and work orders waiting… - [hydraulic system](entities/component/hydraulic-system.md): hydraulic system is an entity of type components in the domain registry, mentioned in 4 source documents. - [IMS bearing](entities/component/ims-bearing.md): IMS bearing is an entity of type components in the domain registry, mentioned in 2 source documents. - [Litware LT-32](entities/product/lt-32.md): Litware LT-32 is a wind turbine product that uses a Fabrikam FGT-3200 three-stage gearbox with one planetary stage followed by two parallel helical stages. At Quellmoor Ridge Wind Farm, 12 Litware LT-32 CCV turbines are recorded, with turbine IDs WTG-01 to WTG-12. The LT-32 has listed… - [Litware Wind Systems](entities/organisation/litware-wind-systems.md): Litware Wind Systems is an organisation that issues service bulletins and maintenance documents for Litware LT-32 CCV turbines. At Quellmoor Ridge Wind Farm, its LT-32 turbines are recorded as WTG-01 to WTG-12 and are associated with Fabrikam FGT-3200 gearboxes. Its instructions and forms are… - [LT-32 CCV](entities/product/lt-32-ccv.md): LT-32 CCV is a Litware turbine model used with Fabrikam FGT-3200 gearboxes on WTG-01 to WTG-12. - [LWS-P-30418](entities/part/lws-p-30418.md): LWS-P-30418 is a 1.5 kW oil cooler fan motor spare part. It was replaced on WTG-07 under WO-26-0398, and the related oil cooler radiator was cleaned under WO-26-0399. Its minimum stock was raised from 1 to 2, and it is currently below minimum with 1 on hand and 2 on order. - [LWS-P-30422](entities/part/lws-p-30422.md): LWS-P-30422 is a spare part referenced in the LT-32 Maintenance Manual gearbox alarm guidance. It is listed as a valve insert to check when alarm A2101 reports high gearbox oil sump temperature. - [LWS-P-41120](entities/part/lws-p-41120.md): LWS-P-41120 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [LWS-P-51207](entities/part/lws-p-51207.md): LWS-P-51207 is a spare part brush set that contains 18 brushes. It was used for generator brush replacement work on WTG-09 under WO-26-0436 and WI-GEN-014. A complete LWS-P-51207 set was replaced on WTG-09. - [LWS-P-55031](entities/part/lws-p-55031.md): LWS-P-55031 is a slip-ring cleaning kit used for generator brush replacement. It is used to clean the slip ring before new brushes are installed and checked for free sliding. - [LWS-P-60455](entities/part/lws-p-60455.md): LWS-P-60455 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [LWS-P-72210](entities/part/lws-p-72210.md): LWS-P-72210 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [LWS-P-80031](entities/part/lws-p-80031.md): LWS-P-80031 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [LWS-P-90012](entities/part/lws-p-90012.md): LWS-P-90012 is an entity of type spare parts in the domain registry, mentioned in 1 source document. - [MM-01 met mast](entities/asset/mm-01.md): MM-01 met mast is a 92 m meteorological mast at Quellmoor Ridge Wind Farm. It is located north of WTG-01 and is the reference for power curve tests. - [oil cooler](entities/component/oil-cooler.md): An oil cooler is a component that cools oil, using an air/oil cooler with an electric fan and a thermostatic valve that sends oil through the cooler above 45 °C. At Quellmoor Ridge, preventive maintenance for the oil cooler includes radiator cleaning and fan current checks every 6 months. A recent… - [oil cooler fan motor](entities/component/cooler-fan-motor.md): The oil cooler fan motor is a component identified by part number LWS-P-30418. It is a 1.5 kW critical spare part with stock below the minimum level. For WTG-07, the motor was replaced under WO-26-0398 and the oil cooler radiator was cleaned under WO-26-0399. - [oil filter element](entities/component/oil-filter.md): The oil filter element is a component identified by part number FGT-P-11872. It is used in gearbox oil change and oil filter element replacement tasks, including the scheduled MP-GBX-02 task every 12 months. It is replaced during the LT-32 CCV turbine conversion and in response to gearbox oil… - [pitch bearing](entities/component/pitch-bearing.md): Pitch bearing bolt re-torque applies to all variants of LT-32 turbines with M30 10.9 pitch bearing bolts. The task covers 100% of pitch bearing bolts and specifies a torque of 1,450 Nm in the cross pattern of the bolt map, blade by blade. On Quellmoor Ridge Wind Farm, the maintenance plan… - [pitch bearing bolts](entities/component/pitch-bearing-bolts.md): Pitch bearing bolts are M30 10.9 bolts used on all variants of LT-32 turbines, with 72 bolts per blade bearing and 216 bolts per turbine. A current bulletin for them requires re-torquing 100% of the bolts to 1,450 Nm in the cross pattern of the bolt map, blade by blade. - [planetary stage](entities/component/planetary-stage.md): A planetary stage is a gearbox stage with a planet carrier, three planet gears, a ring gear, and a sun pinion. The LT-32 uses a three-stage gearbox with one planetary stage followed by two parallel helical stages. - [Proseware Lubricants](entities/organisation/proseware-lubricants.md): Proseware Lubricants supplies Proseware PWG 320 and Proseware PWG 220 gear oil. Proseware PWG 320 is an approved ISO VG 320 synthetic PAO gear oil, and Proseware PWG 220 is an ISO VG 220 gear oil used in the gearboxes of all 12 turbines. - [Proseware PWG 220](entities/product/pwg-220.md): Proseware PWG 220 is an ISO VG 220 gearbox oil used in the gearboxes of Quellmoor Ridge wind turbines. It replaced Proseware PWG 320 in the turbine gearboxes under SB-LWS-2025-07 and MOC-2025-012. The oil-change procedure uses 60 L for flushing and 410 L for filling, and top-up is with PWG 220 only. - [Proseware PWG 320](entities/product/pwg-320.md): Proseware PWG 320 is a gear oil with viscosity grade ISO VG 320 and synthetic PAO base oil. It was the approved gear oil for the LT-32 gearbox before the conversion to Proseware PWG 220. Current procedures state that PWG 320 must not be used for topping up and that residual PWG 320 must remain… - [PWS-220-D208](entities/part/pws-220-d208.md): PWS-220-D208 is a spare part used to supply Proseware PWG 220 for gearbox oil changes. Each turbine requires 3 drums of PWS-220-D208 as part of a 470 L PWG 220 oil change. It is also listed in a completed gearbox oil conversion campaign from PWG 320 to PWG 220. - [PWS-320-D208](entities/part/pws-320-d208.md): PWS-320-D208 is a spare part identified as Proseware PWG 320 gear oil in a 208 L drum. It is also specified as the new oil for gearbox oil changes, supplied as two drums per turbine for 410 L. The current stock entry shows 1 drum on hand, with 0 on order. - [Quellmoor Ridge O&M building](entities/asset/om-building.md): The Quellmoor Ridge O&M building is the site office, workshop and stores at the site entrance. Its notes identify a bunded oil drum store. A monthly O&M review was held at the Quellmoor Ridge O&M building. - [Quellmoor Ridge substation](entities/asset/quellmoor-ridge-substation.md): Quellmoor Ridge substation is a 33/132 kV substation with one 45 MVA transformer. It is located next to the O&M building and connects to City Power & Light and Skelvane 132 kV substation, circuit 2. The substation low-voltage boards are covered by the lockout/tagout procedure for work on the wind… - [Quellmoor Ridge Wind Farm](entities/asset/quellmoor-ridge-wind-farm.md): Quellmoor Ridge Wind Farm is a wind farm with 12 wind turbines, WTG-01 to WTG-12, and a total capacity of 38.4 MW. It is operated by Contoso Renewables. The site includes a 33/132 kV substation and a Quellmoor Ridge O&M building. - [rescue kit](entities/component/rescue-kit.md): A rescue kit is kept in every nacelle and has a sealed kit with a descent device. Its seal must be checked every day, and a broken seal means the kit must be inspected before the next climb. Rescue kit inspections are scheduled every 6 months under MP-HSE-01. - [rotor blade](entities/component/rotor-blade.md): A rotor blade is a component used in the WTG-04 Blade B replacement job, which is described as a single blade lift. WO-26-0355 is a planned high-priority corrective-maintenance work order for WTG-04 to replace rotor blade B because of a trailing-edge crack. - [S100 Running](entities/status-code/s100.md): S100 Running is a status code for WTG-07, which continues running with vibration above the alarm level. Yusuf requested weekly vibration reviews. - [S200 Ready - low wind](entities/status-code/s200.md): S200 Ready - low wind is a status code used for WTG-01 through WTG-12. The status was recorded on 2026-04-10, 2026-07-24, and 2026-08-23. It started when wind speed was low and ended later at higher wind speeds. - [S310 Maintenance mode](entities/status-code/s310.md): S310 is the status code for Maintenance mode. It is used in wind turbine lockout/tagout and SCADA status logs. - [S420 Curtailed - environmental condition](entities/status-code/s420.md): S420 Curtailed - environmental condition is a status code used by WTG-03, WTG-04, and WTG-05. In the SCADA alarm and status log, these turbines were in S420 Curtailed - environmental condition from around 22:00 on 2026-06-01 to around 05:00 on 2026-06-02, and again from 22:00 on 2026-08-25 to… - [S430 Curtailed - grid operator setpoint](entities/status-code/s430.md): S430 Curtailed - grid operator setpoint is a status code used in SCADA alarm and status logs. In the current log, WTG-01 through WTG-12 entered S430 Curtailed - grid operator setpoint at 20.0 MW on 2026-07-14. On 2026-07-15 and 2026-07-16, the same status started at about 08:00 and ended at about… - [S510 Stopped - fault](entities/status-code/s510.md): S510 Stopped - fault is a status code used in SCADA alarm and status logs. It appears with pitch system fault events, gearbox oil sump temperature alarms and trips, and grid voltage out of range alarms across multiple wind turbines. The logs show S510 starting and ending when those alarms are… - [S600 Stopped - icing](entities/status-code/s600.md): S600 Stopped - icing is a status code used for WTG-12, WTG-09, WTG-03, and WTG-02 in SCADA alarm and status logs. In the cited log, icing alarms A7001 led to S600 status starts for those turbines, with later clears and S600 ends recorded. - [SB-LWS-2025-07 Gearbox oil viscosity grade change for LT-32 CCV turbines](entities/bulletin/sb-lws-2025-07.md): SB-LWS-2025-07 is a service bulletin for LT-32 CCV turbines covering gearbox oil viscosity grade. It changes the gearbox oil from Proseware PWG 320 (ISO VG 320) to Proseware PWG 220 (ISO VG 220). The bulletin applies to all 12 CCV turbines at Quellmoor Ridge. - [SB-LWS-2025-11 Pitch bearing bolt re-torque](entities/bulletin/sb-lws-2025-11.md): SB-LWS-2025-11 is service bulletin number SB-LWS-2025-11, revision A, titled Pitch bearing bolt re-torque. The maintenance plan for Quellmoor Ridge Wind Farm includes pitch bearing bolt re-torque task MP-PIT-01, covering 100% of bolts at 1,450 Nm every 12 months, and referencing SB-LWS-2025-11… - [service lift](entities/component/service-lift.md): The service lift is a component used on the tower, and climbers should use it when available. In cold weather, it should be used when it works, and its battery should be checked on cold mornings. One service lift stopped twice the previous winter because of cold, and those events should be… - [Skelvane District Environmental Authority](entities/organisation/skelvane-district-environmental-authority.md): The Skelvane District Environmental Authority is the issuer of Environmental Permit EP-2018-0417 for Quellmoor Ridge Wind Farm. The permit is signed for the Authority by Siobhan Carrick, Permitting Officer, and the Authority contact is the Permitting Officer for the Skelvane district. - [slip ring](entities/component/slip-ring.md): A slip ring is a component that is cleaned with kit LWS-P-55031 and then fitted with new brushes that are checked for free sliding. Its cleaning task MP-GEN-02 is scheduled every 12 months and references WI-GEN-014. - [SOP-GBX-010 Gearbox oil change](entities/procedure/sop-gbx-010.md): SOP-GBX-010 is a standard operating procedure for gearbox oil change. Revision B is effective from 2025-08-25 and supersedes Revision A. It is referenced by gearbox maintenance tasks, including the PWG 220 gearbox oil change task. - [SOP-LOTO-001 Lockout/tagout of wind turbines](entities/procedure/sop-loto-001.md): SOP-LOTO-001 is the lockout/tagout procedure for wind turbines. It is Revision C and was effective on 2024-09-02. Isolation follows SOP-LOTO-001 and requires a personal padlock and name tag. - [SOP-WAH-003 Working at height and rescue](entities/procedure/sop-wah-003.md): SOP-WAH-003 is the working at height and rescue procedure. It is Revision B and is effective 2026-04-07. All work at height must follow SOP-WAH-003. - [SPL-012 Gearbox oil level check](entities/procedure/spl-012.md): SPL-012 is titled "Gearbox oil level check." It is used to check the oil level at the sight glass and top up only with PWG 220. - [Tailspin Heavy Lift](entities/organisation/tailspin-heavy-lift.md): Tailspin Heavy Lift is an organisation involved in planning a crane lift for the WTG-04 blade replacement. Bram Okkerse of Tailspin Heavy Lift is the appointed person for this lift plan. - [Trey Research Laboratories](entities/organisation/trey-research-laboratories.md): Trey Research Laboratories is an organisation approved the report TR-OA-2026-0614 for the WTG-07 gearbox oil sample. - [TS-600C](entities/product/ts-600c.md): TS-600C is a 600 t crawler crane with fleet number TS-600C-02 and a 102 m main boom. - [WI-GEN-014 Generator brush replacement](entities/procedure/wi-gen-014.md): WI-GEN-014 is a Revision A work instruction for generator brush replacement. It applies to WTG-01 through WTG-12 with a 690 V double-fed asynchronous generator. Maintenance tasks MP-GEN-01 and MP-GEN-02 reference WI-GEN-014. - [Wingtip Blade Services](entities/organisation/wingtip-blade-services.md): Wingtip Blade Services is a contractor for the blade drone inspection task MP-BLD-01 at Quellmoor Ridge Wind Farm. The task is scheduled every 12 months. - [WTG-01](entities/asset/wtg-01.md): WTG-01 is a wind turbine at Quellmoor Ridge Wind Farm, which has 12 turbines identified WTG-01 to WTG-12. The site’s turbines are Litware LT-32 CCV units with Fabrikam FGT-3200 gearboxes, and WTG-01 is included in site procedures for gearbox oil changes, lockout/tagout, and working at height. For… - [WTG-02](entities/asset/wtg-02.md): WTG-02 is a turbine at Quellmoor Ridge Wind Farm. Its 2026 maintenance plan includes gearbox endoscope inspection task MP-GBX-04, and the plan records that the task is done at 2026-07-01. WTG-02 had a generator-side HSS bearing spalling finding on 2026-07-23, and work order WO-26-0439 is waiting… - [WTG-03](entities/asset/wtg-03.md): WTG-03 is a turbine listed on the Quellmoor Ridge Wind Farm site layout plan. It is part of the environmental permit curtailment group with WTG-04 and WTG-05. Current records also show bat curtailment, yaw brake pad inspection, and a yaw misalignment alarm for WTG-03. - [WTG-04](entities/asset/wtg-04.md): WTG-04 is a turbine at Quellmoor Ridge Wind Farm. It is subject to bat-protection curtailment and monitoring requirements under the current environmental permit. In 2026, WTG-04 had a category 4 trailing-edge crack on blade B and was scheduled for replacement. - [WTG-05](entities/asset/wtg-05.md): WTG-05 is a turbine at Quellmoor Ridge Wind Farm and is part of the environmental permit curtailment group WTG-03 to WTG-05. It is subject to bat protection curtailment at night from 1 June to 31 August when wind is low and temperature is 10 °C or higher. Current records also show a rescue kit… - [WTG-06](entities/asset/wtg-06.md): WTG-06 is a turbine listed on the Quellmoor Ridge Wind Farm site layout plan. An internal safety audit recorded a rescue drill on WTG-06 and reported that the casualty was lowered to the ground in 9 minutes against a 15-minute target. The SCADA log for WTG-06 recorded yaw misalignment, a pitch… - [WTG-07](entities/asset/wtg-07.md): WTG-07 is a turbine at Quellmoor Ridge with a main gearbox, a Fabrikam FGT-3200 serial FGT-3200-18-07752. In 2026, WTG-07 logged repeated gearbox oil over-temperature alarms and trips, and it was limited to 2.6 MW before the limit was removed on 2026-06-25. WTG-07's oil sampling report recorded… - [WTG-08](entities/asset/wtg-08.md): WTG-08 is a wind turbine at Quellmoor Ridge Wind Farm. A current blade inspection found category 3 lightning receptor damage on WTG-08 blade A, with the tip receptor burnt. The site SCADA log recorded an A2120 Gearbox oil pressure low alarm for WTG-08 on 2026-04-02, which later cleared. - [WTG-09](entities/asset/wtg-09.md): WTG-09 is a wind turbine at Quellmoor Ridge Wind Farm. Its gearbox oil conversion to PWG 220 is pending under SB-LWS-2025-07, and the completed gearbox oil conversion work order WO-25-0309 is recorded separately. In 2026, WTG-09 had a generator brush replacement work order completed and a… - [WTG-10](entities/asset/wtg-10.md): WTG-10 is a wind turbine listed on the Quellmoor Ridge wind farm site layout plan. In 2026-H1, WTG-10 recorded 93.8% availability, 807.4 MWh of energy, 46.1 downtime hours, and 24 alarms. WTG-10 had a high-priority corrective work order, WO-26-0187, that replaced the generator-side HSS bearing and… - [WTG-11](entities/asset/wtg-11.md): WTG-11 is a turbine at Quellmoor Ridge Wind Farm. Current records note a category 3 root gelcoat crack on blade C, a small hydraulic oil leak at the yaw brake hose, and a gearbox oil sump temperature high alarm on WTG-11. WTG-11 also had a dropped-object near miss at the yaw deck hatch, and… - [WTG-12](entities/asset/wtg-12.md): WTG-12 is one of the 12 Litware LT-32 CCV turbines at Quellmoor Ridge Wind Farm. It is part of the WTG-01 to WTG-12 scope for site procedures and the PWG 320 to PWG 220 gearbox oil conversion campaign. WTG-12 has recorded SCADA events including pitch system fault, gearbox oil filter differential… - [yaw system](entities/component/yaw-system.md): yaw system is an entity of type components in the domain registry, mentioned in 4 source documents. ## Sources - [8D report INC-2026-006 - Repeated gearbox oil over-temperature on WTG-07 (revision 2026-07-10)](sources/inc-2026-006-8d-report-wtg-07-gearbox-over-temperature.md): This is an 8D incident report for repeated gearbox oil over-temperature on WTG-07. It covers the team, problem description, containment, root-cause analysis, corrective and preventive actions, verification status, and open closure condition. - [Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12](sources/asset-register-2026.md): This is a fictional 2026 asset register for Quellmoor Ridge Wind Farm. It lists turbine asset details, other site assets, ownership, and notes on the coordinate system. - [Blade inspection report WBS-2026-031 - Quellmoor Ridge Wind Farm (May 2026)](sources/wbs-2026-031-blade-inspection-report.md): This is Wingtip Blade Services' blade inspection report WBS-2026-031 for Quellmoor Ridge Wind Farm in May 2026. It covers a drone visual and ground-photography inspection of 36 blades, with detailed category 3 and category 4 findings and related repair, replacement, monitoring, and follow-up recommendations. - [Curtailment instruction CPL-CI-2026-018](sources/cpl-ci-2026-018-grid-curtailment-instruction.md): This City Power & Light Network Control instruction orders a planned curtailment for Quellmoor Ridge Wind Farm during a network outage. It gives the export limit schedule, ramp-rate condition, acknowledgement requirement, reporting threshold, and acknowledgement details. - [Daily Turbine Checklist Form CHK-05 for WTG-05, 14/07/2026](sources/chk-05-daily-checklist-wtg-05-2026-07-14.md): This is a photographed daily turbine checklist for Quellmoor Ridge Wind Farm, completed for turbine WTG-05 on 14/07/2026. It records ten checklist items as OK, with remarks stating all OK. - [Email RE: LWS-TS-48213 Applicability of SB-LWS-2025-07 Rev. A to Quellmoor Ridge](sources/2025-05-20-re-lws-ts-48213-sb-lws-2025-07-applicability.md): This email from Litware Wind Systems technical support answers Contoso Renewables’ question about whether service bulletin SB-LWS-2025-07 Rev. A applies to Quellmoor Ridge. It states that the bulletin applies to all 12 LT-32 turbines in CCV configuration and lists conversion requirements for gearbox oil, flushing, filters, start-up temperature, and completion reporting. - [Environmental Permit EP-2018-0417 - Quellmoor Ridge Wind Farm (consolidated with variation 2)](sources/ep-2018-0417-environmental-permit-consolidated.md): This is the consolidated environmental permit for Quellmoor Ridge Wind Farm, incorporating variation 1 and variation 2. It covers general permit conditions, noise and shadow flicker limits, ecology and bat curtailment, ice precautions, pollution prevention, reporting, and authority contacts. - [Fabrikam Supplier Note on PO-76994 HSS Bearings and PWG 220 Follow-up](sources/2026-08-03-lieferantenhinweis-fabrikam.md): This is a Fabrikam Getriebetechnik supplier note to Contoso Renewables for Quellmoor Ridge Wind Farm. It covers a delayed delivery of HSS bearings FGT-P-22328, follow-up after switching from PWG 320 to PWG 220, and installation requirements for the HSS bearings. - [Gearbox Fundamentals for Wind Technicians](sources/gearbox-fundamentals.md): This training deck covers gearbox fundamentals for wind technicians, focused on the Fabrikam FGT-3200 in the Litware LT-32. It explains drivetrain stages, shaft acronyms, lubrication after the PWG 220 change, temperature and condition-monitoring thresholds, typical failure modes, and quiz answers. - [Internal safety audit report AUD-2026-02](sources/aud-2026-02-internal-safety-audit-report.md): This is a Contoso Renewables Corporate HSE internal safety audit report for Quellmoor Ridge Wind Farm. It covers audit scope and method, findings, positive observations, and conclusion with action ownership and due dates. - [KPI Export 2026-H1](sources/kpi-export-2026-h1.md): This CSV KPI export lists monthly turbine performance records for the first half of 2026. It covers WTG-01 through WTG-12 and includes availability, energy, downtime, and alarm-count fields. - [Lift Plan LP-2026-009 - WTG-04 Blade B Replacement](sources/lp-2026-009-lift-plan-wtg-04-blade-scanned.md): This is a Tailspin Heavy Lift lift plan for replacing blade B on WTG-04 at Quellmoor Ridge Wind Farm. It covers the lift window, responsible persons, crane and rigging data, weather limits, exclusion zone, ground bearing pressure, crane set-up, lift sequence, and sign-off. - [LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt](sources/lws-mm-gbx-32-revd-gearbox-maintenance-manual-excerpt.md): This is a Litware Wind Systems maintenance manual excerpt for the Litware LT-32 gearbox chapter, issued as LWS-MM-GBX-32 Rev. D. It covers gearbox description, lubrication, oil change overview, inspection and condition monitoring, oil analysis and vibration limits, and troubleshooting of gearbox alarms. - [Maintenance Plan 2026, Issue 2 — Quellmoor Ridge Wind Farm](sources/maintenance-plan-2026.md): This spreadsheet is the 2026 maintenance plan, issue 2 dated 2026-07-01, for Quellmoor Ridge Wind Farm. It contains a maintenance task catalogue, a per-turbine 2026 plan, oil sampling results, and a revision log. - [MOC-2025-012 - Gearbox Oil Grade Change to PWG 220](sources/moc-2025-012-gearbox-oil-grade-change.md): This approved management-of-change record covers replacing PWG 320 gearbox oil with PWG 220 in all 12 Quellmoor Ridge turbines. It records the reason, risk controls, implementation actions, estimated cost, and approval for the lubricant change. - [Monthly O&M Review Minutes – 2026-06-18](sources/2026-06-18-monthly-om-review-minutes.md): Minutes of the 18 June 2026 monthly O&M review held at the Quellmoor Ridge O&M building. The meeting covered safety, May performance, the WTG-07 gearbox over-temperature issue, WTG-04 blade replacement planning, environmental curtailment, spare parts, network works, and action tracking. - [Near-miss Report INC-2026-003: Dropped Socket at WTG-11](sources/inc-2026-003-near-miss-dropped-socket-wtg-11.md): This is a Contoso Renewables near-miss report for a dropped socket incident at WTG-11. It covers the event description, immediate actions, causes, corrective actions, and lessons learned. - [Oil analysis report TR-OA-2026-0614 - WTG-07 gearbox oil](sources/tr-oa-2026-0614-oil-analysis-wtg-07.md): Trey Research Laboratories issued an oil analysis report for the WTG-07 main gearbox at Quellmoor Ridge. The report records sample details, laboratory results, an alert overall condition, comments on ferrous wear, recommendations, and a recent trend table. - [Parts shortage - HSS bearing FGT-P-22328 below minimum stock](sources/2026-07-22-parts-shortage-hss-bearing.md): This email reports spare-parts shortages at Quellmoor Ridge Wind Farm, especially the HSS bearing FGT-P-22328 being below minimum stock. It describes impacts on WTG-07 work, delivery timing, related oil cooler fan motor stock, and an air-freight option. - [Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025)](sources/onboarding-and-site-rules.md): This training deck is an induction for new staff and contractors at Quellmoor Ridge Wind Farm. It covers site layout facts, key contacts, site rules, permits and isolation, work-at-height and rescue rules, weather and ice controls, emergency arrangements, acronyms, and environmental requirements. - [Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C](sources/site-layout-plan.md): This is a site layout plan for Quellmoor Ridge Wind Farm, Rev. C, dated 2024-05-06 and marked fictional/not for operational use. It labels turbine locations, MM-01 met mast, Skelvane Wood bat roost, an environmental permit curtailment group, the O&M building, a 33/132 kV substation, nearby dwellings, and a 132 kV line to Skelvane substation. - [SB-LWS-2025-07 Rev. A - Gearbox oil viscosity grade change for LT-32 CCV turbines](sources/sb-lws-2025-07-reva-gearbox-oil-cold-climate.md): This Litware Wind Systems service bulletin changes the gearbox oil specification for affected LT-32 cold-climate turbines. It covers applicability, compliance timing, oil conversion instructions, parts and labour, and completion reporting. - [SB-LWS-2025-11 Rev. A - Pitch Bearing Bolt Re-torque](sources/sb-lws-2025-11-reva-pitch-bearing-bolt-retorque.md): This Litware Wind Systems service bulletin covers a mandatory one-time re-torque of pitch bearing bolts on LT-32 turbines. It states the reason, required torqueing instructions, compliance timing, and record-return requirements. - [SCADA alarm and status log, 2026-04-01 to 2026-08-31](sources/scada-alarm-log-2026-04-01-2026-08-31.md): This SCADA alarm and status log records alarm and status events for WTG-01 through WTG-12 from 2026-04-01 through 2026-08-31. It covers yaw misalignment, icing stops, low-wind readiness, maintenance mode, environmental and grid-operator curtailment, grid-voltage faults, gearbox and generator alarms, pitch-system faults, emergency stops, and related stopped-fault states. - [Shift handover - 2026-07-15 (day shift to night shift)](sources/2026-07-15-shift-handover.md): This shift handover note records the day-to-night status at Quellmoor Ridge Wind Farm on 2026-07-15. It covers curtailments, turbine observations, completed and postponed work, and actions for the next shift. - [Shift Handover for 2026-07-29 Day Shift](sources/2026-07-29-shift-handover.md): This is a fictional day-shift handover note dated 2026-07-29 by Callum Rydings. It records turbine maintenance findings, parts and work-order status, monitoring actions, and expected night curtailment. - [Shift Handover Note - Day Shift - 18/07/2026](sources/2026-07-18-note-de-releve.md): This is a French day-shift handover note for Quellmoor Ridge Wind Farm dated 18/07/2026. It records turbine maintenance and status observations for WTG-09, WTG-07, WTG-04, and WTG-12, plus a follow-up action for the next team. - [SOP-GBX-010 Rev. B - Gearbox oil change](sources/sop-gbx-010-revb-gearbox-oil-change.md): This standard operating procedure describes the gearbox oil change process for Quellmoor Ridge turbines. It covers scope, references, safety, materials, procedural steps, waste handling, records, and revision history for the change to PWG 220 oil. - [SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines](sources/sop-loto-001-revc-lockout-tagout.md): This standard operating procedure defines lockout/tagout for wind turbines and related low-voltage substation boards at Quellmoor Ridge. It covers responsibilities, LT-32 energy sources, personal padlocks and tags, isolation, verification, removal, and revision history. - [SOP-WAH-003 Revision B - Working at height and rescue](sources/sop-wah-003-revb-working-at-height-and-rescue.md): This standard operating procedure defines working-at-height and rescue requirements for turbine climbing, nacelle and hub work, dropped-object controls, weather limits, rescue equipment, rescue response, training, and revision history. It applies to WTG-01 through WTG-12 and is effective from 2026-04-07. - [Spare Parts Stock Snapshot 2026-07-21 for Quellmoor Ridge O&M Building](sources/spare-parts-stock-2026-07-21.md): This spreadsheet is a fictional spare-parts stock snapshot for the Quellmoor Ridge O&M building as of 2026-07-21. It covers stock levels, movements, supplier lead times, and ownership information. - [SPL-012 Gearbox Oil Level Check](sources/spl-012-gearbox-oil-level-check.md): This source is a single-point lesson for Quellmoor Ridge, dated 2025-09-29, on checking gearbox oil level. It covers stopping and waiting before reading the sight glass, acceptable MIN/MAX level criteria, top-up restrictions, checklist recording, and the action required if the level is below MIN. - [Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion](sources/2025-11-12-toolbox-talk-cold-weather-start-up.md): This is a transcript of a toolbox talk on cold-weather turbine start-up after gearbox oil conversion to PWG 220. It covers conversion status, start-up temperature thresholds, cold-start alarms, ice and personnel safety, service lift issues, and post-conversion oil handling. - [WI-GEN-014 Rev. A - Generator Brush Replacement](sources/wi-gen-014-reva-remplacement-balais-generatrice.md): This French work instruction describes inspection and replacement of generator brushes on Litware LT-32 turbines at Quellmoor Ridge. It covers safety requirements, required materials, replacement criteria, the step-by-step procedure, run-in, recording, estimated duration, and revision history. - [Work Orders Export through 2026-08-31](sources/work-orders-export-2026-08-31.md): This CSV export lists wind turbine work orders with creation dates, turbine identifiers, work types, titles, statuses, priorities, parts, assignments, planned and completed dates, references, and remarks. It covers modification, preventive maintenance, and corrective maintenance work from 2025-08-27 through 2026-08-24. - [WTG-07 GBX HSS GS Radial Vibration Trend Data, 2026](sources/vibration-trend-wtg-07-gearbox-2026.md): This CSV trend dataset contains dated condition-monitoring readings for WTG-07 using the sensor value “GBX HSS GS radial.” It covers velocity\_rms\_mm\_s, envelope\_ge, oil\_temp\_avg\_c and power\_avg\_kw values from 2026-01-05 to 2026-08-31. - [SOP-GBX-010 - Gearbox oil change, Revision A](sources/sop-gbx-010-reva-gearbox-oil-change.md): (superseded) This standard operating procedure describes the safe gearbox oil change process for Quellmoor Ridge turbines. It covers scope, references, safety requirements, materials and tools, step-by-step work instructions, waste handling, records, and revision history.