Question 44Steam Plants - QMED70% to pass
Which of the devices listed is found on an LP main propulsion steam turbine casing?
AI Explanation
The correct answer is C) Sentinel valve.
A sentinel valve is a safety device found on the casing of a main propulsion steam turbine. It is designed to release excess steam pressure in the event of a malfunction or overpressure situation, protecting the turbine from damage. This is a key safety feature required by Coast Guard regulations for steam turbine propulsion systems.
The other options, while relevant to steam turbine systems, are not specifically required on the turbine casing itself. The duplex relief valves, HP turbine bypass valve, and sliding beam are found in other parts of the steam propulsion system, but not directly on the turbine casing.
Related Questions
#42 According to the illustrated lubricating oil system diagram, which of the labeled items would be used to manually strip out the sludge from the bottom of the main lube oil sump prior to entry for cleaning? Illustration SE-0011 #43 The adjustable spherically seated self-aligning bearing housings used in main turbines are provided with oil deflector rings. The function of these rings is to _______________.#45 An efficient seal is normally obtained between the upper and lower halves of a turbine casing by _______________.#46 According to the illustrated cross-compounded main propulsion turbine set, where are the astern elements located? Illustration SE-0016 #47 While a vessel is underway, one of the FIRST indications of the failure of the gland leak off exhaust fan motor is _______________.