Question 670Steam Plants - Assistant Engineer70% 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 steam turbine used for main propulsion on a vessel. Its purpose is to prevent the buildup of excessive pressure within the turbine casing in the event of a malfunction or failure. If the pressure rises above a safe level, the sentinel valve will automatically open to release the excess pressure and protect the turbine.
The other options are not found on a steam turbine casing. The HP turbine bypass valve, sliding beam, and duplex set of relief valves are associated with other types of machinery and systems, not specifically the steam turbine casing.
Related Questions
#668 The main propulsion shaft turning gear usually connects to the free end of the high- speed high-pressure pinion because the _______________.#669 The purpose of the sentinel valve installed on a turbine casing is to _______________.#671 Large temperature and pressure drops which occur in the first stage of a combination impulse and reaction turbine are caused by steam passing through _______________.#672 Which of the following statements represents the function the nozzle assembly performs in an impulse turbine? #673 The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by _______________.