Question 87Steam Plants - Assistant Engineer70% to pass
After steam has been raised and a boiler is being placed on the line, the superheater vent can be closed when _______________.
AI Explanation
The correct answer is A) the boiler is supplying auxiliary steam.
When a boiler is being placed on the line, the superheater vent can be closed once the boiler is supplying auxiliary steam. This allows the boiler to start heating the superheater coils and bring the superheated steam up to temperature before it is introduced into the main steam system.
The other options are incorrect because: B) warming up the steam stops does not necessarily indicate the boiler is ready to supply steam; C) opening the drains does not mean the superheater vent can be closed; and D) 5 psi above line pressure is not the specific criterion for closing the superheater vent.
Related Questions
#85 When raising steam on a boiler, the superheater drains should _______________.#86 When raising steam on an idle boiler and the steam pressure has risen to about 5 pounds more than the pressure of the boiler already on the line, you can _______________.#88 If a boiler is brought on the line with its steam pressure much higher than that of the boiler already on the line, there is danger of _______________.#89 When preparing to cut a boiler in on the line, you determine that the steam pressure of the incoming boiler is about 5 psig above line pressure. Which of the following steps should you take next? #90 The time taken to raise steam on a cold boiler should always be _______________.