21 Questions
What can cause sudden stoppage in a fluid system?
Swing check valves closing suddenly when pumps stop or control valves close quickly
What leads to sudden fluid acceleration in a fluid system?
Pumps starting suddenly, with discharge valves fully open
How can water hammer in fluid systems be prevented?
Installing piping components that reduce or eliminate water hammer
What should be done to prevent excess steam and water loss during warm-up of steam lines?
Use small warm-up lines, rather than main isolation valves
What is a design solution to prevent or reduce the severity of water hammer in steam systems?
Install no-slam design check valves
What should be done if water hammer occurs while placing a boiler on-line?
Close the non-return valve at once
What should be done if water hammer occurs in the boiler house during routine operation?
Check the boiler water level and then lower it with the boiler blowoff valves
What action should be taken if a malfunctioning steam trap is identified in the plant?
Isolate and remove the trap for repair or replacement following plant lockout and tagout procedures
What is one of the recognizable signs of water hammer?
Loud noises and shaking of piping systems
When does water hammer occur in steam systems?
When steam is first admitted into cold steam lines or heat exchangers
What causes water hammer in fluid systems?
Sudden acceleration of fluid
What is the consequence of severe water hammer?
Pipe failures
What is the primary focus of this objective in relation to water hammer?
Identify, prevent, and respond to water hammer
When can the noises associated with water hammer be small pings or loud bangs?
Depending on the severity of the water hammer
Why is it imperative that operators are familiar with methods of water hammer prevention?
To prevent costly pipe failures caused by water hammer
What is the main focus of this objective?
Preventing water hammer
How is water hammer recognizable?
As a series of loud noises and shaking of piping systems
What causes water hammer when it occurs during the admission of steam into cold steam lines?
Sudden acceleration of fluid
What can be the consequences of water hammer?
Mild shockwaves to pipe failures
Why is it imperative that operators are familiar with methods of water hammer prevention?
To prevent costly and dangerous effects
When does water hammer occur due to the sudden stoppage of pumps?
When discharge check valves close suddenly
Learn about identifying, preventing, and responding to water hammer in steam plants. Understand the dangers and costs associated with water hammer, as well as the recognizable signs such as loud noises and shaking of piping systems.
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