The 150-psi supply is drawn from which steam system?

The 150-psi supply is drawn from which steam system?

• A. 600-psi steam system
• B. 150-psi steam system
• C. Boiler feed water system
• D. Auxiliary steam line

Answer: (A)

Steam systems on ships use a high-pressure source for the main needs, and lower pressures are produced by reducing that pressure. The 150-psi supply is taken from the 600-psi system by passing steam through a pressure-reducing station, which lowers the pressure to 150 psi while preserving flow and quality. This arrangement avoids building a separate, dedicated 150-psi boiler and keeps the low-pressure services fed consistently from the same primary source. The boiler feed water system isn’t a steam source, and an auxiliary steam line is just a distribution path—the actual source remains the high-pressure 600-psi system reduced to 150 psi.

Steam systems on ships use a high-pressure source for the main needs, and lower pressures are produced by reducing that pressure. The 150-psi supply is taken from the 600-psi system by passing steam through a pressure-reducing station, which lowers the pressure to 150 psi while preserving flow and quality. This arrangement avoids building a separate, dedicated 150-psi boiler and keeps the low-pressure services fed consistently from the same primary source. The boiler feed water system isn’t a steam source, and an auxiliary steam line is just a distribution path—the actual source remains the high-pressure 600-psi system reduced to 150 psi.