8. Waste Management and Chemicals
8.1. Chemicals
Table 8.1-1. Summary of maximum potential volumes oils, fuels, and lubricants per wind turbine generator.
| System/Component | Oil/Fuel Type | Oil/Fuel Volume |
| Bearings and Yaw Pinions | Grease* | 187 gallons |
| Hydraulic Pumping Unit, Hydraulic Pitch Actuators, Hydraulic Pitch Accumulators | Hydraulic Oil | 40 gallons |
| Drive Train Gearbox (if applicable), Yaw Drives Gearbox | Gear Oil | 106 gallons |
| Transformer | Dielectric Fluid | 1,585 gallons |
| Emergency Generator | Diesel Fuel | 793 gallons |
| Switchgear | Sulfur Hexafluoride (SF₆) | 243 lbs |
| Transformer and Converter Cooling System | Propylene Glycol | 357 gallons |
| Converter Primary Cooling | Ethylene Glycol | 48 gallons |
*Approximately 26 gal to 40 gal (100 L to 150 L) per large bearing.
Table 8.1-2. Summary of maximum volumes oils, fuels, and lubricants per offshore substation.
| Equipment | Oil/Fuel Type | Oil/Fuel Volume |
| Transformers and Reactors | Transformer oil | 79,252 gallons |
| Generators | Diesel Fuel | 52,834 gallons |
| High-Voltage & Medium-Voltage Gas-Insulated Switchgear | Sulfur Hexafluoride (SF₆) | 4,950 lbs |
| Crane | Hydraulic Oil | 317 gallons |
Table 8.1-3. Summary of maximum volumes oils, fuels, and lubricants per onshore substation.
| Parameter | Oil/Fuel Volume |
| Transformer oil substation | 38,170 gallons |
| Fixed shunt reactor 1 oil | 15,500 gallons |
| Fixed shunt reactor 2 oil | 7,350 gallons |
| Variable shunt reactor oil | 18,300 gallons |
| SF₆ substation | 6,603 lbs |
| Batteries (lead acid gel) | 4,034 lbs |
Submitted to the Bureau of Ocean Energy Management
June 14, 2022
Download original document: “Ocean Wind Offshore Wind Farm: Construction & Operations Plan, Volume I”
