WTG-06

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WTG-06 is a turbine listed on the Quellmoor Ridge Wind Farm site layout plan.^{123456789101112} 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.¹³ The SCADA log for WTG-06 recorded yaw misalignment, a pitch system fault, and a gearbox oil filter differential pressure high alarm in 2026.^{14151617181920212223}

Facts

• The audit method was document review, interviews, and observation of two jobs: a filter change on WTG-02 and a rescue drill on WTG-06.¹³
• Finding F1 was a major finding: the rescue kit in the WTG-06 nacelle was past its 6-monthly inspection, with last inspection on 2025-06-12 and due date 2025-12-12; the action was to inspect all rescue kits and add the kit seal check to the daily checklist, owned by Greta Vollan and due 2026-03-31.¹³
• The WTG-06 rescue drill lowered the casualty to the ground in 9 minutes against a 15 minutes target.¹³
• The 2026-06-18 grid-voltage alarms cleared at 99.6 %, and the S510 Stopped - fault statuses ended between WTG-06 at 14:15:04 and WTG-12 at 14:20:10.^24252627
• WTG-06 had two A5001 Yaw misalignment raised records on 2026-07-30, at 11.8 deg and 16.5 deg, followed by two cleared records at 4.2 deg.^14151617
• WTG-06 raised A4105 Pitch system fault with value 3 axis on 2026-08-05, started S510 Stopped - fault, then cleared A4105 and ended S510 shortly after midnight on 2026-08-06.^18192021
• WTG-06 had A2140 Gearbox oil filter differential pressure high raised at 2.89 bar and cleared at 1.90 bar on 2026-08-31.²²²³
• Pitch bearing bolt re-torque work for WTG-01 through WTG-06 was completed with a stated torque of 1,450 Nm and coverage of 100 % of bolts, referenced to SB-LWS-2025-11 Rev. A.^282930313233
• The turbine labels shown on the plan are WTG-01, WTG-02, WTG-03, WTG-04, WTG-05, WTG-06, WTG-07, WTG-08, WTG-09, WTG-10, WTG-11, and WTG-12.^{123456789101112}
• The service lift on WTG-06 stopped twice the previous winter because of cold, and such events should be reported every time for follow-up with Litware.³⁴³⁵

Timeline

• 2025-06-12: Finding F1 was a major finding: the rescue kit in the WTG-06 nacelle was past its 6-monthly inspection, with last inspection on 2025-06-12 and due date 2025-12-12; the action was to inspect all rescue kits and add the kit seal check to the daily checklist, owned by Greta Vollan and due 2026-03-31.¹³
• 2025-11: Pitch bearing bolt re-torque work for WTG-01 through WTG-06 was completed with a stated torque of 1,450 Nm and coverage of 100 % of bolts, referenced to SB-LWS-2025-11 Rev. A.^282930313233
• 2026-06-18: The 2026-06-18 grid-voltage alarms cleared at 99.6 %, and the S510 Stopped - fault statuses ended between WTG-06 at 14:15:04 and WTG-12 at 14:20:10.^24252627
• 2026-07-30: WTG-06 had two A5001 Yaw misalignment raised records on 2026-07-30, at 11.8 deg and 16.5 deg, followed by two cleared records at 4.2 deg.^14151617
• 2026-08-05: WTG-06 raised A4105 Pitch system fault with value 3 axis on 2026-08-05, started S510 Stopped - fault, then cleared A4105 and ended S510 shortly after midnight on 2026-08-06.^18192021
• 2026-08-31: WTG-06 had A2140 Gearbox oil filter differential pressure high raised at 2.89 bar and cleared at 1.90 bar on 2026-08-31.²²²³

Documents

• Environmental Permit EP-2018-0417 - Quellmoor Ridge Wind Farm (consolidated with variation 2)
• MOC-2025-012 - Gearbox Oil Grade Change to PWG 220
• Blade inspection report WBS-2026-031 - Quellmoor Ridge Wind Farm (May 2026)
• SOP-GBX-010 Rev. B - Gearbox oil change
• SOP-WAH-003 Revision B - Working at height and rescue
• WI-GEN-014 Rev. A - Generator Brush Replacement
• Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12
• Internal safety audit report AUD-2026-02
• Maintenance Plan 2026, Issue 2 — Quellmoor Ridge Wind Farm
• SCADA alarm and status log, 2026-04-01 to 2026-08-31
• Work Orders Export through 2026-08-31
• KPI Export 2026-H1
• Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025)
• Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C
• Email RE: LWS-TS-48213 Applicability of SB-LWS-2025-07 Rev. A to Quellmoor Ridge
• Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion
• SOP-GBX-010 - Gearbox oil change, Revision A (superseded)

Related

• Topics: Blades, pitch bearings and main-component lifts, Cold-climate operation and icing, Environmental permit and night curtailment, Gearbox lubrication and oil changes, Gearbox temperature, vibration and oil analysis, Generator brushes and electrical systems, Grid connection and grid operator instructions, Safety, isolation and work at height, Spare parts, stock levels and supply, Training, site rules and acronyms

Sources

Footnotes

1. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 5 · OCR ↩ ↩²

2. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 6 · OCR ↩ ↩²

3. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 9 · OCR ↩ ↩²

4. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 10 · OCR ↩ ↩²

5. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 11 · OCR ↩ ↩²

6. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 13 · OCR ↩ ↩²

7. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 12 · OCR ↩ ↩²

8. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 14 · OCR ↩ ↩²

9. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 16 · OCR ↩ ↩²

10. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 18 · OCR ↩ ↩²

11. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 20 · OCR ↩ ↩²

12. Quellmoor Ridge Wind Farm Site Layout Plan - Rev. C — region 21 · OCR ↩ ↩²

13. Internal safety audit report AUD-2026-02 — p. 1 · ✓ quote verified ↩ ↩² ↩³ ↩⁴ ↩⁵

14. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1426 · table ↩ ↩² ↩³

15. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1427 · table ↩ ↩² ↩³

16. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1428 · table ↩ ↩² ↩³

17. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1429 · table ↩ ↩² ↩³

18. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1534 · table ↩ ↩² ↩³

19. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1535 · table ↩ ↩² ↩³

20. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1536 · table ↩ ↩² ↩³

21. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1537 · table ↩ ↩² ↩³

22. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1896 · table ↩ ↩² ↩³

23. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1897 · table ↩ ↩² ↩³

24. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 888 · table ↩ ↩²

25. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 889 · table ↩ ↩²

26. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 909 · table ↩ ↩²

27. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 911 · table ↩ ↩²

28. Work Orders Export through 2026-08-31 — row 45 · table ↩ ↩²

29. Work Orders Export through 2026-08-31 — row 46 · table ↩ ↩²

30. Work Orders Export through 2026-08-31 — row 47 · table ↩ ↩²

31. Work Orders Export through 2026-08-31 — row 48 · table ↩ ↩²

32. Work Orders Export through 2026-08-31 — row 49 · table ↩ ↩²

33. Work Orders Export through 2026-08-31 — row 50 · table ↩ ↩²

34. Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion — 02:29–02:37 · ✓ quote verified ↩

35. Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion — 02:37–02:45 · ✓ quote verified ↩

Provenance badges✓ quote verified the quoted words were found verbatim in the source texttable values parsed deterministically from the cited table rowsOCR text recognised from an image; compare it with the image