Before starting a reciprocating, steam-driven pump that has been idle for a period of time, you should __________.
β’ Condensate buildup in a steam cylinder when equipment has been idle β’ Purpose of cylinder drain cocks on steam-driven machinery β’ Risks of water hammer or hydraulic lock when admitting steam to a cold, idle cylinder
β’ What happens inside the steam cylinder while the pump is shut down and cooling, and what fluid is likely to collect there? β’ Before you admit high-pressure steam to a cold cylinder, what must you do to protect the cylinder and prevent damage? β’ Which option directly addresses the condition inside the steam cylinder after a long idle period?
β’ Identify which choices deal with the steam side versus the liquid (pumpage) side. β’ Ask which action specifically removes condensate from the steam cylinder before steam is admitted. β’ Eliminate any option that would trap condensate in the steam cylinder at the moment of startup.
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