Operating Pressure Relief Valves

Play an AI-generated podcast conversation about this lesson

According to ASME BPVC Section I, what is the main heading for PG-67 to PG-73?

Safety Relief Valves

Pressure Relief Valves

Code Calculations

Overpressure Protection Requirements (correct)

What is the term used in ASME BPVC Section I to replace the three separate terms before 2007?

Relief Valve

Safety Relief Valve

Safety Valve

Pressure Relief Valve (correct)

What is the definition of a safety valve according to the text?

An automatic pressure relieving device actuated by the static pressure upstream of the valve and used primarily for liquid service.

An automatic pressure relieving device actuated by the static pressure upstream of the valve and characterized by full-opening pop action. (correct)

An automatic pressure relieving device actuated by the static pressure upstream of the valve, which opens further with the increase in pressure over the opening pressure.

An automatic pressure-actuated relieving device suitable for use either as a safety valve or relief valve, depending on application.

According to PG-67.1, how many pressure relief valves are required for a boiler with more than 0.47 m2 of bare tube water-heating surface?

At least two Signup and view all the answers

According to PG-67.2, what is the maximum allowable pressure rise for a boiler when the pressure relief valve discharges all the steam that can be generated?

6% Signup and view all the answers

According to PG-68.1, where should the pressure relief valves be located for an attached superheater?

Between the superheater outlet and the first stop valve Signup and view all the answers

According to the text, what is the main principle for boiler PRV design?

The relieving capacity must be sufficient to match steaming capacity. Signup and view all the answers

Based on the given information, how much steam must the PRVs on a stoker-fired firetube boiler be capable of discharging per hour if the boiler has 62 $m^2$ of heating surface?

2108 kg/h Signup and view all the answers

What is the minimum required relieving capacity for all the PRVs on a gas-fired watertube boiler with 65 $m^2$ of boiler heating surface and 85 $m^2$ of waterwall surface?

9815 kg/h Signup and view all the answers

According to Table A-44, a pulverized fuel-fired watertube boiler must have a PRV capacity of 49 kg/h for each square metre of boiler heating surface, plus 78 kg/h for each square metre of waterwall heating surface. What is the minimum required capacity for the boiler heating surface and waterwall heating surface combined?

10840 kg/h Signup and view all the answers

According to the solution, what is the capacity available in the superheater PRV?

1000 kg/h Signup and view all the answers

According to PG-68.2, what percentage of the total required capacity must the pressure relief valves on the boiler (not including the superheater PRVs) have?

75% Signup and view all the answers

According to the solution, what is the minimum required relieving capacity for the steam drum PRVs?

9840 kg/h Signup and view all the answers

According to the note, are superheaters included in PRV capacity calculations?

Only if there are no intervening valves Signup and view all the answers

According to Appendix A-12, how is the maximum quantity of fuel that can be burned per hour determined?

By a test Signup and view all the answers

Operating Pressure Relief Valves

Podcast Beta

Questions and Answers

According to ASME BPVC Section I, what is the main heading for PG-67 to PG-73?

What is the term used in ASME BPVC Section I to replace the three separate terms before 2007?

What is the definition of a safety valve according to the text?

According to PG-67.1, how many pressure relief valves are required for a boiler with more than 0.47 m2 of bare tube water-heating surface?

According to PG-67.2, what is the maximum allowable pressure rise for a boiler when the pressure relief valve discharges all the steam that can be generated?

According to PG-68.1, where should the pressure relief valves be located for an attached superheater?

According to the text, what is the main principle for boiler PRV design?

Based on the given information, how much steam must the PRVs on a stoker-fired firetube boiler be capable of discharging per hour if the boiler has 62 $m^2$ of heating surface?

What is the minimum required relieving capacity for all the PRVs on a gas-fired watertube boiler with 65 $m^2$ of boiler heating surface and 85 $m^2$ of waterwall surface?

According to the solution, what is the capacity available in the superheater PRV?

According to PG-68.2, what percentage of the total required capacity must the pressure relief valves on the boiler (not including the superheater PRVs) have?

According to the solution, what is the minimum required relieving capacity for the steam drum PRVs?

According to the note, are superheaters included in PRV capacity calculations?

According to Appendix A-12, how is the maximum quantity of fuel that can be burned per hour determined?

More Quizzes Like This

Operating Pressure Relief Valves

Operating Pressure Relief Valves

Engine Ops | Equipment

Gas Turbine Operation and Performance

Upgrade to continue