WTG-11

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WTG-11 is a turbine at Quellmoor Ridge Wind Farm.^{123456789101112} 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.^13141516 WTG-11 also had a dropped-object near miss at the yaw deck hatch, and corrective work installed tool tether anchor points there.¹⁷¹⁸

Facts

• Finding F-05 is a category 3 root gelcoat crack on WTG-11 blade C, located at radius 3.2 m, with repair within 6 months and a check at the next inspection.¹³
• Finding F5 was a minor finding: dropped-object exclusion signage was absent at the tower base of WTG-11 during nacelle work; the action was to provide a portable exclusion signage set for each turbine, owned by Callum Rydings and due 2026-03-31.¹⁹
• The document is a Contoso Renewables incident management near-miss report numbered INC-2026-003 and titled "Dropped socket at WTG-11."¹⁷
• The incident was recorded as occurring on 2026-03-24 at 10:40 at WTG-11, yaw deck hatch, and was classified as a near miss involving a dropped object with high potential severity.¹⁷
• Corrective action A1 requires installing tool tether anchor points at the yaw deck hatches, first at WTG-11 under WO-26-0203 and then on all turbines; Callum Rydings owns the open action due 2026-04-30.¹⁷
• On 2026-04-01, WTG-11 raised A5001 Yaw misalignment at 15.1 deg and cleared it at 4.2 deg.²⁰²¹
• WTG-11 raised A2101 Gearbox oil sump temperature high at 75.1 °C on 2026-08-12 16:05:02 and cleared it at 72.7 °C on 2026-08-12 16:14:40.¹⁴¹⁵
• During WTG-11 maintenance on 2026-08-16, A1001 Emergency stop activated was raised at 10:05:47 and cleared at 10:16:47.²²²³
• WO-26-0203 installed tool tether anchor points at the WTG-11 yaw deck hatch, was completed as high-priority corrective maintenance, and used part AWI-31007 quantity 1 under reference INC-2026-003.¹⁸
• Near the end of the export, WO-26-0444 for WTG-05 is in progress for rescue kit inspection, WO-26-0450 for WTG-11 is waiting for parts for a leaking hydraulic hose in the yaw brake circuit with part AWI-10442 quantity 1, and WO-26-0457 for WTG-03 is open for yaw brake pad inspection.²⁴²⁵²⁶
• 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}
• WTG-11 had a small hydraulic oil leak at a yaw brake hose found on the day of the handover.¹⁶
• The AWI-10442 hose for WTG-11 is not stocked and an order is to be raised.¹⁶
• The WTG-11 leak was contained with absorbent pads and is checked every shift.¹⁶
• PWG 220 conversion status was: nine turbines completed, WTG-11 being converted that day, WTG-12 scheduled for the following Wednesday, and WTG-09 planned for the twenty-fourth if the access road remained open.²⁷²⁸

Timeline

• 2026-03-24: The incident was recorded as occurring on 2026-03-24 at 10:40 at WTG-11, yaw deck hatch, and was classified as a near miss involving a dropped object with high potential severity.¹⁷
• 2026-03-31: Finding F5 was a minor finding: dropped-object exclusion signage was absent at the tower base of WTG-11 during nacelle work; the action was to provide a portable exclusion signage set for each turbine, owned by Callum Rydings and due 2026-03-31.¹⁹
• 2026-04-01: On 2026-04-01, WTG-11 raised A5001 Yaw misalignment at 15.1 deg and cleared it at 4.2 deg.²⁰²¹
• 2026-04-30: Corrective action A1 requires installing tool tether anchor points at the yaw deck hatches, first at WTG-11 under WO-26-0203 and then on all turbines; Callum Rydings owns the open action due 2026-04-30.¹⁷
• 2026-08-12: WTG-11 raised A2101 Gearbox oil sump temperature high at 75.1 °C on 2026-08-12 16:05:02 and cleared it at 72.7 °C on 2026-08-12 16:14:40.¹⁴¹⁵
• 2026-08-16: During WTG-11 maintenance on 2026-08-16, A1001 Emergency stop activated was raised at 10:05:47 and cleared at 10:16:47.²²²³

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
• Near-miss Report INC-2026-003: Dropped Socket at WTG-11
• SCADA alarm and status log, 2026-04-01 to 2026-08-31
• Spare Parts Stock Snapshot 2026-07-21 for Quellmoor Ridge O&M Building
• 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
• Shift Handover for 2026-07-29 Day Shift
• 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. Blade inspection report WBS-2026-031 - Quellmoor Ridge Wind Farm (May 2026) — p. 2 · ✓ quote verified ↩ ↩²

14. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1660 · table ↩ ↩² ↩³

15. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1661 · table ↩ ↩² ↩³

16. Shift Handover for 2026-07-29 Day Shift — lines 5–14 · ✓ quote verified ↩ ↩² ↩³ ↩⁴

17. Near-miss Report INC-2026-003: Dropped Socket at WTG-11 — p. 1 · ✓ quote verified ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

18. Work Orders Export through 2026-08-31 — row 43 · table ↩ ↩²

19. Internal safety audit report AUD-2026-02 — p. 1 · ✓ quote verified ↩ ↩²

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

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

22. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1676 · table ↩ ↩²

23. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1677 · table ↩ ↩²

24. Work Orders Export through 2026-08-31 — row 82 · table ↩

25. Work Orders Export through 2026-08-31 — row 83 · table ↩

26. Work Orders Export through 2026-08-31 — row 86 · table ↩

27. Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion — 00:11–00:19 · ✓ quote verified ↩

28. Toolbox Talk: Cold-Weather Start-Up After PWG 220 Conversion — 00:19–00:27 · ✓ 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