Table 3.2-12 Preliminary Summary of Oils, Fuels, and Greases for Construction and Operations*
| Chemical Type | Description | Use/Location | Approx. Volume | Frequency of Transfer | Treatment or Disposal |
| Transformer oil (WTG and ESP) | Bio-degradable oil or highly refined mineral oil | Main 220/66 or 220/132 kV Transformers, 220 kV shunt reactors, 66 or 132 kV aux. transformers & 66 or 132 kV grounding reactor | 6,000 L per WTG 466,400 L on ESP |
Not anticipated; only changed if needed | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Lubrication oil (ESP) | Lubricant oil | Crane Emergency generator |
Crane: To be defined during detailed design Emergency generator: 55 L |
Expected every 5-8 years | To be brought to designated O&M port and disposed according to regulations and guidelines |
| General oil (WTG and ESP) | Different kinds of oil | WTGs: Hydraulics, gear box, yaw gears, transformers, etc. Might also be used for passive damper located in tower ESP: Hydraulic oil for crane |
8,000 L per WTG 3,000 L to be replaced as part of scheduled maintenance 1,320 L on ESP |
Expected every 5-8 years | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Grease (WTG) | Refill of grease for main bearing, yaw bearing, blade bearing | Bearings including yaw bearing and blade bearing | 40 L per WTG | Expected every year | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Diesel fuel (WTG and ESP) | Fuel for the emergency diesel generator (if any) | Diesel storage tank | 3,000 L per WTG 21,560 L on ESP |
Only as required | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Fire extinguishing agents (WTG and ESP) | Inert gas extinguishing system (e.g., NOVEC, nitrogen, or similar) | Various rooms | To be defined during detailed design | Not anticipated; only changed if needed | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Fire extinguishing agents (WTG and ESP) | Manual extinguishers: powder, carbon dioxide (CO₂), foam | Various locations | WTG: To be defined during detailed design 11,000 L foam on ESP |
Depends on fabrication | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Fire extinguishing agents (WTG and ESP) | Other types (if any) | Various locations | To be defined during detailed design | Not anticipated; only changed if needed | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Dielectric gas (electrical insulating gas) (WTG and ESP) | Sulfur hexafluoride (SF₆) | WTG: GIS switch gears ESP: GIS switch gears Onshore substation |
Approx. 18 kilograms per WTG 2,320 kilograms on ESP |
Not replaced | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Paint & coating (WTG and ESP) | Corrosion protection of steel structure paints & varnishes | Steel structure, various locations | To be defined during detailed design | Only for repairs | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Coolants or refrigerants (WTG and ESP) | Water, glycol, other refrigerants | Heating, Ventilation, and Air Conditioning unit, Air Handling Unit | 1,600 L per WTG Approx. 700 L to be replaced as part of scheduled maintenance 176 L on ESPs |
Expected every 5-8 years | To be brought to designated O&M port and disposed according to regulations and guidelines |
| Grout (WTG and ESP) | Grout | Grout for connection between monopile and transition piece | Up to 40,000 L per WTG and ESP position | Not anticipated; only changed if needed | To be brought back to port and disposed according to regulations and guidelines |
*ESP = electrical service platform; WTG = wind turbine generator
Submitted to the Bureau of Ocean Energy Management
September 30, 2022
Download original document: “Kitty Hawk Wind: Construction and Operations Plan. Chapter 3: Description of Proposed Activity”