Which of the following pressures represents...

Question 1 / 205eccef9cbacbc34ba4d45c09

Question 1 of 205eccef9cbacbc34ba4d45c09

Which of the following pressures represents the normal pressure setting of a pressure-vacuum relief valve as normally found on tank vessels?

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Question 1 of 20

5eccef9cbacbc34ba4d45c09

Which of the following pressures represents the normal pressure setting of a pressure-vacuum relief valve as normally found on tank vessels?

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🔍 Key Concepts

• Atmospheric pressure in psia (pounds per square inch absolute) and how it relates to 14.7 psia at sea level • Typical pressure-vacuum relief valve settings on tank vessel cargo tanks are only slightly above and below atmospheric pressure, not very high • Difference between tank design pressure and PV valve operating pressure

💭 Think About

• Start by asking: what is standard atmospheric pressure in psia, and which choice is closest to that value on the pressure side? • Look at how many psi above and below atmospheric each choice represents. Which one looks like a realistic small overpressure and small vacuum for a cargo tank? • Think about safety: PV valves are meant to protect the tank from slight over- and under-pressure, not to operate at large pressure differences. Which option reflects that idea?

✅ Before You Answer

• Identify which option has a pressure value closest to 14.7 psia, representing normal atmospheric pressure • Calculate the difference (in psi) between the high and low values in each answer choice and compare how large those swings are • Verify that the chosen range looks like a modest deviation from atmosphere, not a very high pressure range more suitable for pressure vessels, not typical cargo tanks

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Question 1 of 20

Which of the following pressures represents the normal pressure setting of a pressure-vacuum relief valve as normally found on tank vessels?

22.7 psia - 14.7 psia

20.7 psia - 14.6 psia

18.7 psia - 14.4 psia

16.7 psia - 14.2 psia

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Question 1 / 205eccef9cbacbc34ba4d45c09

Question 1 of 205eccef9cbacbc34ba4d45c09

Which of the following pressures represents the normal pressure setting of a pressure-vacuum relief valve as normally found on tank vessels?

Back

Question 1 of 20

5eccef9cbacbc34ba4d45c09

Which of the following pressures represents the normal pressure setting of a pressure-vacuum relief valve as normally found on tank vessels?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed