14 Questions
What is the purpose of having multiple boilers in larger steam systems?
To provide redundancy and additional capacity
In what condition is the boiler when it is being brought online?
Cold and at reduced pressure
How are the different steam headers identified in a high-pressure steam plant?
By the pressures at which they operate
What can happen if headers and piping are not properly warmed up in a steam plant?
Potential for equipment damage
Why is it beneficial to have multiple boilers in larger steam systems?
To provide backup capacity during maintenance or failures
What is the purpose of connecting headers in sequence in a multiple boiler system?
To minimize water hammer
When warming the steam line between the header and Boiler 2, what should be done with the Boiler 2 header block valve?
Keep it closed
What should be done with the Boiler 2 non-return valve drain when warming the steam line to Boiler 2?
Open it
In what condition should the boiler be operating when cutting in a power boiler into a pressurized steam header?
Manual low-fire mode
Why should ALL DRAIN VALVES at ALL SYSTEM LOW POINTS be opened when warming high-pressure steam headers in a multiple boiler plant?
To prevent water hammer from occurring
What is the purpose of the double block and bleed arrangement in a boiler system?
To protect workers inside boiler drums when the connected header is energized
What is the purpose of the bypass valves located at the header block valves of multiple power boilers feeding a common steam header?
To warm up the steam lines to the boilers for easy maintenance
What should be done to warm the steam line to the header using steam from Boiler 2 when Boiler 2 is being warmed to place it on line with Boiler 1?
Open Boiler 2 non-return valve drain and header block valve drain
When is it considered hazardous to put a relatively short length of pipe into full service without warming it up and drying it out?
When there is an accumulation of condensate within the pipe
Test your knowledge of steam systems and boilers with this quiz. Learn about the purpose of having multiple boilers in larger steam systems and the conditions of a boiler when it is being brought online.
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