Excess gland-sealing steam is unloaded to the LP turbine through which line?

Excess gland-sealing steam is unloaded to the LP turbine through which line?

• A. Gland seal unloading line
• B. Main steam line
• C. Bleed line
• D. Condensate line

Answer: (A)

Gland seal systems use a controlled flow of steam to keep the turbine shaft packing sealed and prevent oil leakage. Any steam that isn’t needed for sealing must be removed from the gland area to prevent overpressure and waste. That excess is carried away by the gland seal unloading line and directed into the low‑pressure (LP) turbine section, where it can still be utilized or vented appropriately. The other lines serve different roles: the main steam line feeds the turbine, the bleed line taps steam for other components, and the condensate line returns condensed steam. But for removing excess gland sealing steam, the dedicated gland seal unloading line is used.

Gland seal systems use a controlled flow of steam to keep the turbine shaft packing sealed and prevent oil leakage. Any steam that isn’t needed for sealing must be removed from the gland area to prevent overpressure and waste. That excess is carried away by the gland seal unloading line and directed into the low‑pressure (LP) turbine section, where it can still be utilized or vented appropriately. The other lines serve different roles: the main steam line feeds the turbine, the bleed line taps steam for other components, and the condensate line returns condensed steam. But for removing excess gland sealing steam, the dedicated gland seal unloading line is used.