Question 1 of 292185eccefa1bacbc34ba4d472d1

The FIRST step in breaking vacuum on a main turbine unit should be to __________.

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Question 1 of 29218
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The FIRST step in breaking vacuum on a main turbine unit should be to __________.

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šŸ” Key Concepts

ā€¢ Main condenser vacuum: how it is created and maintained on a steam turbine plant ā€¢ Role of the main air ejector, circulating pump, and condensate pump in condenser operation ā€¢ Sequence for safely breaking vacuum to avoid damage to the condenser or turbine

šŸ’­ Think About

ā€¢ Which component is directly responsible for REMOVING nonā€‘condensable gases and thus maintaining vacuum in the condenser? ā€¢ If you suddenly stop seawater circulation or condensate flow while vacuum still exists, what could happen to metal temperatures and condenser/turbine components? ā€¢ When you want to intentionally lose vacuum, is it safer to first cut off the device that MAINTAINS vacuum, or to disturb cooling water or condensate flow?

āœ… Before You Answer

ā€¢ Identify which choice directly affects the device that maintains vacuum rather than cooling water or condensate flow ā€¢ Consider which action, if taken first, minimizes risk of thermal stress or condenser damage ā€¢ Verify in your steam plant notes/procedures which system is used specifically for air removal and vacuum maintenance