Question 58Steam Plants - 1st Asst/Chief70% to pass
During initial starting of the standby turbine-driven boiler feed pump, which of the listed valves should remain closed?
AI Explanation
The correct answer is B) Pump discharge check valve.
During the initial starting of a standby turbine-driven boiler feed pump, the pump discharge check valve should remain closed. This is to prevent backflow from the boiler system and allow the pump to build up the necessary pressure before opening the discharge valve. The other valves listed, such as the turbine exhaust valve (A), turbine steam supply valve (C), and pump suction valve (D), should be opened or adjusted as per the specific operating procedures to properly start and load the standby pump.
Related Questions
#56 The pressure in the feed water system must exceed boiler steam drum pressure in order to _______________.#57 Recirculation of the feed water ensures a flow of water through the _______________.#59 Which of the following statements is correct regarding the start-up operation of a non-condensing turbine-driven feed pump? #60 Auxiliary boilers are divided into several classifications, one of which is _______________.#61 In a coil-type forced circulation auxiliary water-tube boiler, _______________.