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Boiler Primary Control System Quiz

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Questions and Answers

What is the purpose of the post-purge in the shutdown sequence described in the text?

To ignite the flame

To de-energize the SSOVs

To cool down the system after shutdown

To ensure complete combustion and clear out any remaining combustible gases (correct)

In the shutdown sequence described, what does the programming controller do if the SSOV proof-of-closure switches do not close within 5 seconds during standby?

Shuts down the burner immediately

Ignites the flame again

Continues with the post-purge

Remains in standby until the condition is corrected (correct)

What initiates the shutdown sequence for the burner as per the text?

Flame extinguishing

Call for heat

Permissive or a burner safety switch (correct)

Manual on-off switch

During the shutdown sequence, what action causes the flame to be extinguished?

De-energizing the SSOVs Signup and view all the answers

What happens if there is a call for heat during the shutdown sequence?

Startup sequence is repeated Signup and view all the answers

What component in the shutdown sequence allows 5 seconds for proof-of-closure switches to close?

Programming controller Signup and view all the answers

If the steam pressure rises above the set point of the operating control, what occurs next in the shutdown sequence?

Call for heat ends Signup and view all the answers

What action signifies that all permissives and pre-ignition interlocks are satisfied in the startup sequence?

'Call for heat' is initiated Signup and view all the answers

'Shutdown Sequence' mentioned in the text is initiated when:

'Steam pressure' rises above set point Signup and view all the answers

In case of an error where 'proof-of-closure switches' do not close, what will happen to the 'programming controller'?

Remains in standby until switches close. Signup and view all the answers

Boiler Primary Control System Quiz

Choose a study mode

Podcast

Questions and Answers

What is the purpose of the post-purge in the shutdown sequence described in the text?

In the shutdown sequence described, what does the programming controller do if the SSOV proof-of-closure switches do not close within 5 seconds during standby?

What initiates the shutdown sequence for the burner as per the text?

During the shutdown sequence, what action causes the flame to be extinguished?

What happens if there is a call for heat during the shutdown sequence?

What component in the shutdown sequence allows 5 seconds for proof-of-closure switches to close?

If the steam pressure rises above the set point of the operating control, what occurs next in the shutdown sequence?

What action signifies that all permissives and pre-ignition interlocks are satisfied in the startup sequence?

'Shutdown Sequence' mentioned in the text is initiated when:

In case of an error where 'proof-of-closure switches' do not close, what will happen to the 'programming controller'?

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