To what system or equipment do turbine casing drains normally drain?

Turbine casing drains are designed to channel excess moisture and potentially harmful condensate away from the turbine. These drains specifically connect to the low-pressure drain system, ensuring that any appropriate fluids are handled correctly without affecting the operation of the turbine.

The low-pressure drain system serves as a collection point for lower-grade fluids, effectively managing them to prevent buildup and maintain operational efficiency. This system is essential to keep the turbine casing dry, which helps in preventing corrosion and maintaining the integrity and longevity of the turbine components.

In contrast, while the main condenser, bilge system, and high-pressure steam system have specific functions, they do not directly handle the condensate from the turbine casing. The main condenser is involved in cooling and condensing steam, the bilge system is intended for managing excess water in the hull of a ship, and the high-pressure steam system is focused on delivering steam for power generation. These systems operate under different pressures and conditions, making them unsuitable for turbine casing drainage.