Steam Systems and Boilers Quiz

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What is the purpose of having multiple boilers in larger steam systems?

To increase the steam pressure

To reduce the number of steam headers

To decrease the thermal capacity

To provide redundancy and additional capacity (correct)

In what condition is the boiler when it is being brought online?

Cold and at normal operating pressure

Hot and at reduced pressure

Hot and at normal operating pressure

Cold and at reduced pressure (correct)

How are the different steam headers identified in a high-pressure steam plant?

By the equipment they supply steam to

By the pressures at which they operate (correct)

By the temperature at which they operate

By the size of the pipes they are connected to

What can happen if headers and piping are not properly warmed up in a steam plant?

Potential for equipment damage Signup and view all the answers

Why is it beneficial to have multiple boilers in larger steam systems?

To provide backup capacity during maintenance or failures Signup and view all the answers

What is the purpose of connecting headers in sequence in a multiple boiler system?

To minimize water hammer Signup and view all the answers

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 Signup and view all the answers

What should be done with the Boiler 2 non-return valve drain when warming the steam line to Boiler 2?

Open it Signup and view all the answers

In what condition should the boiler be operating when cutting in a power boiler into a pressurized steam header?

Manual low-fire mode Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

Steam Systems and Boilers Quiz

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