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Questions and Answers
What type of safety relief valves are commonly used in potable water heaters and hot water storage tanks?
What type of safety relief valves are commonly used in potable water heaters and hot water storage tanks?
- Safety relief valves
- Pressure relief valves
- Temperature and pressure safety relief valves (correct)
- Temperature relief valves
What is the maximum allowable working pressure for the water heaters described in the text?
What is the maximum allowable working pressure for the water heaters described in the text?
- More than 1100 kPa
- Exactly 1100 kPa
- Less than 99 kPa
- Less than 1100 kPa (correct)
According to ASME BPVC Section IV, Part HLW-800, how many officially rated temperature and pressure safety relief valves should each water heater have?
According to ASME BPVC Section IV, Part HLW-800, how many officially rated temperature and pressure safety relief valves should each water heater have?
- At least one (correct)
- As many as needed
- At least three
- At least two
What is the purpose of using temperature and pressure safety relief valves in potable water heaters and hot water storage tanks?
What is the purpose of using temperature and pressure safety relief valves in potable water heaters and hot water storage tanks?
What standard is referred to for safety relief valve requirements for industrial and commercial potable water heaters in the text?
What standard is referred to for safety relief valve requirements for industrial and commercial potable water heaters in the text?
What type of water is used in the described potable water heaters and hot water storage tanks?
What type of water is used in the described potable water heaters and hot water storage tanks?
What is the purpose of a temperature and pressure relief valve in a hot water system?
What is the purpose of a temperature and pressure relief valve in a hot water system?
Where must safety relief valves be installed according to HLW-801?
Where must safety relief valves be installed according to HLW-801?
What is the construction of the pressure-sensitive element in a temperature and pressure relief valve?
What is the construction of the pressure-sensitive element in a temperature and pressure relief valve?
What type of temperature relief device uses the expansion and contraction of a rod and tube arrangement to open and close?
What type of temperature relief device uses the expansion and contraction of a rod and tube arrangement to open and close?
Why might additional overpressure protection be required for relief devices sensitive only to temperature?
Why might additional overpressure protection be required for relief devices sensitive only to temperature?
Where should safety relief valves be installed in relation to other components in the hot water supply system?
Where should safety relief valves be installed in relation to other components in the hot water supply system?
What action does the temperature sensitive element in a T&P valve take when exposed to high temperature?
What action does the temperature sensitive element in a T&P valve take when exposed to high temperature?
What type of safety relief valve is considered insufficient for vessel protection by ASME?
What type of safety relief valve is considered insufficient for vessel protection by ASME?
What does the combination temperature and pressure relief valve provide protection for?
What does the combination temperature and pressure relief valve provide protection for?
What is another type of temperature relief device that automatically recloses?
What is another type of temperature relief device that automatically recloses?
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