Service Pressure in Cylinders

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Questions and Answers

What is service pressure?

The average pressure at which the cylinder is routinely checked

The minimum pressure at 20°C to which the cylinder is filled

The recommended pressure at which the cylinder is stored

The maximum pressure at 70°F to which the cylinder is ordinarily filled (correct)

At what temperature is service pressure typically defined?

100°F (38 °C)

70°F (20 °C) (correct)

150°F (66 °C)

30°F (-1 °C)

How is a cylinder typically filled in relation to its service pressure?

To its maximum capacity

To its minimum capacity

Ordinarily, to its maximum pressure (correct)

Only partially, to allow for expansion

What is the unit of temperature in which service pressure is typically measured?

Fahrenheit Signup and view all the answers

What happens to the pressure in a cylinder when the temperature increases?

It increases Signup and view all the answers

How many revolutions should the cylinder valve be turned when in use?

Two full revolutions Signup and view all the answers

What should be avoided during closure of the cylinder valve?

Over-tightening Signup and view all the answers

When should the cylinder valve be fully open?

When in use Signup and view all the answers

Why is it important to turn the cylinder valve two full revolutions?

To ensure it is fully open Signup and view all the answers

What is the recommended action when opening the cylinder valve?

Turn it fully open Signup and view all the answers

What is the name of the software described in the content?

PDFelement Signup and view all the answers

What is the number mentioned in the content in relation to PDFelement?

21 Signup and view all the answers

What is the context in which the term 'volume' is used in the content?

Describing the capacity of a container Signup and view all the answers

What is the purpose of mentioning the cylinder in the content?

To quantify the volume of water it could hold Signup and view all the answers

What is the relationship between Wondershare and PDFelement?

PDFelement is a software product of Wondershare Signup and view all the answers

Why are cylinders only partially filled?

To allow some space for more liquid to vaporize if the temperature increases Signup and view all the answers

What happens to the liquid in the cylinder if the temperature increases?

More of it vaporizes Signup and view all the answers

What is the purpose of the extra space in partially filled cylinders?

To allow for thermal expansion Signup and view all the answers

Why is it necessary to leave some space in the cylinder?

To prevent the cylinder from bursting due to thermal expansion Signup and view all the answers

What is the consequence of not leaving enough space in the cylinder?

The cylinder may burst due to thermal expansion Signup and view all the answers

What happens to the composition of the mixture as it is being used up?

It becomes increasingly rich in nitrous oxide content. Signup and view all the answers

What is the effect of the mixture's composition change on the oxygen levels?

The oxygen levels decrease, making the mixture more hypoxic. Signup and view all the answers

What is the result of the changes in the mixture's composition?

A more hypoxic mixture. Signup and view all the answers

What is the relationship between the nitrous oxide content and the oxygen levels in the mixture?

They are inversely proportional. Signup and view all the answers

What is the trend in the mixture's composition as it is used up?

It becomes more nitrous oxide-rich and hypoxic. Signup and view all the answers

Study Notes