Gas Cylinder Construction Quiz

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Questions and Answers

What material are many gas cylinders made of due to its lighter weight?

  • Carbon steel
  • Seamless steel
  • Aluminum (correct)
  • Steel alloy

Which type of gas cylinder is made of steel alloy with higher strength?

  • DOT Type 3A
  • DOT Type 3AA (correct)
  • Seamless steel
  • Carbon steel

What is the primary material used in the construction of gas cylinders for its strength?

  • Aluminum
  • Carbon steel
  • Seamless steel (correct)
  • Steel alloy

What type of relief valve ruptures at a specific pressure to vent gas out in a controlled manner?

<p>Frangible/Ruptured Disk (A)</p> Signup and view all the answers

At what approximate temperature does a fusible plug relief valve melt to allow gas to vent out in case of fire?

<p>90-100 ºC (D)</p> Signup and view all the answers

Where is a spring-loaded relief valve typically found in relation to gas cylinders?

<p>Not directly attached to a cylinder (B)</p> Signup and view all the answers

What could happen if the gas temperature in a cylinder increases too much?

<p>The high gas pressure could rupture and explode the cylinder (C)</p> Signup and view all the answers

Why do most small cylinders have a fusible plug relief valve?

<p>To allow gas to vent out in case of fire (B)</p> Signup and view all the answers

Which safety system is specifically designed for low pressure connection?

<p>Diameter Index Safety System (DISS) (C)</p> Signup and view all the answers

Which safety system is part of ASSS but only applies to the valve outlet of small cylinders?

<p>Pin Index Safety System (PISS) (C)</p> Signup and view all the answers

Which safety system can withstand higher pressure, more than 200 psig?

<p>American Standard Safety System (ASSS) (A)</p> Signup and view all the answers

Which safety system is a specific type of Quick Connect system?

<p>Diameter Index Safety System (DISS) (C)</p> Signup and view all the answers

Which safety system has two pins projecting from the inner surface of the yoke connector that mate with the two pinholes?

<p>Pin Index Safety System (PISS) (B)</p> Signup and view all the answers

What does a + sign marking on a cylinder indicate?

<p>It is approved for filling to 10% greater than its service pressure (B)</p> Signup and view all the answers

What is the relationship between the E, H, and T size cylinders in terms of gas capacity?

<p>E &lt; H &lt; T (B)</p> Signup and view all the answers

Why should cylinder color coding only be used as a guide for identifying contents?

<p>Color codes are not standardized internationally (D)</p> Signup and view all the answers

What pressure are cylinders with a service pressure of 2015 psi filled to?

<p>2200 psi (C)</p> Signup and view all the answers

What does a + sign marking on a cylinder indicate?

<p>It is approved for filling to 10% greater than its service pressure (B)</p> Signup and view all the answers

Why should cylinder color coding only be used as a guide for identifying contents?

<p>Color codes are not standardized internationally (C)</p> Signup and view all the answers

At what pressure are cylinders with a service pressure of 2015 psi filled to?

<p>2200 psi (A)</p> Signup and view all the answers

What is the relationship between the E, H, and T size cylinders in terms of gas capacity?

<p>E &lt; H &lt; T (C)</p> Signup and view all the answers

What color is a gas cylinder containing Nitrogen?

<p>Black (C)</p> Signup and view all the answers

What color would a gas cylinder containing Carbon dioxide and Oxygen be?

<p>Gray/White (A)</p> Signup and view all the answers

What gas is represented by the color Brown in the gas cylinder coding system?

<p>Helium (B)</p> Signup and view all the answers

What is the recommended temperature range for placing gas cylinders to prevent from heat?

<p>Below 52 degrees C (A)</p> Signup and view all the answers

What is the recommended action to avoid damage to gas cylinders during transportation?

<p>Use cylinder carts with a securing mechanism (C)</p> Signup and view all the answers

What is the primary purpose of keeping protective cylinder caps in place when the cylinder is not in use?

<p>To protect the valve and prevent contamination (C)</p> Signup and view all the answers

Why is it important to avoid storing air compressors and gas cylinders together?

<p>To prevent contamination of the gas (D)</p> Signup and view all the answers

In the context of cylinder safety, the guidelines for visually inspecting the cylinder and valve before use are recommended by which organization?

<p>NATIONAL FIRE PROTECTION AGENCY (NFPA) (C)</p> Signup and view all the answers

Which organization is responsible for providing recommendations for cylinder safety?

<p>AMERICAN PETROLEUM INSTITUTE (API) (A)</p> Signup and view all the answers

The guidelines for cylinder safety, including visual inspection, are based on the recommendations of which association?

<p>CANADIAN STANDARDS ASSOCIATION (CSA) (B)</p> Signup and view all the answers

What is the relationship between the volume of gas in a liquid gas cylinder and its pressure, as per the provided information?

<p>The pressure has no relationship to the amount of liquid remaining (A)</p> Signup and view all the answers

What is the most accurate method for determining the contents of a liquid gas cylinder, according to the provided information?

<p>Weighing the cylinder (C)</p> Signup and view all the answers

What happens to the pressure in a gas cylinder when all the liquid is gone and the cylinder contains only gas, based on the given information?

<p>The pressure decreases in proportion to a reduction in volume (A)</p> Signup and view all the answers

What is the relationship between the volume of gas and pressure in a gas cylinder, as per the provided information?

<p>The volume of gas is directly proportional to its pressure at a constant temperature (D)</p> Signup and view all the answers

What is the most accurate method for determining the contents of a liquid gas cylinder, based on the provided information?

<p>Weighing the cylinder (D)</p> Signup and view all the answers

What happens to the pressure in a gas cylinder when all the liquid is gone and the cylinder contains only gas, based on the given information?

<p>The pressure decreases in proportion to a reduction in volume (C)</p> Signup and view all the answers

What is the relationship between the volume of gas and pressure in a gas cylinder, as per the provided information?

<p>The volume of gas is directly proportional to the pressure (D)</p> Signup and view all the answers

What gas is represented by the color Brown in the gas cylinder coding system?

<p>Nitrous oxide (N2O) (B)</p> Signup and view all the answers

What is the recommended action to avoid damage to gas cylinders during transportation?

<p>Avoid sudden movements or impacts (A)</p> Signup and view all the answers

How is Helium commercially produced for medical use?

<p>By liquefying natural gas and mixing it with 20% oxygen (D)</p> Signup and view all the answers

How is Nitrous Oxide (N2O) commercially produced?

<p>By thermal decomposition of ammonium nitrate (A)</p> Signup and view all the answers

What is the primary method for producing Carbon Dioxide (CO2) for medical use?

<p>By heating limestone in contact with water (A)</p> Signup and view all the answers

How are small quantities of Oxygen (O2) commercially produced?

<p>By electrolysis of water &amp; decomposition of sodium chlorate (NaClO3) (C)</p> Signup and view all the answers

What is the primary method for producing Nitric Oxide (NO) commercially?

<p>By oxidizing ammonia at high temperatures in the presence of a catalyst (A)</p> Signup and view all the answers

Which gas, when breathed in pure form, would cause suffocation and death?

<p>Helium (He) (B)</p> Signup and view all the answers

Which gas is used in the management of singultus (hiccups) and the prevention of washout of CO2 during cardiopulmonary bypass?

<p>Carbon Dioxide (CO2) (A)</p> Signup and view all the answers

Which gas is a pulmonary vasodilator to improve oxygenation?

<p>Nitric Oxide (NO) (A)</p> Signup and view all the answers

Which gas decreases the work of breathing by making gas flow more laminar?

<p>Helium (He) (A)</p> Signup and view all the answers

Which gas is used to provide anesthesia during surgery and is commonly known as 'laughing gas'?

<p>Nitrous Oxide (N2O) (A)</p> Signup and view all the answers

What is the most common form of storage for bulk (central) oxygen?

<p>Liquid storage (C)</p> Signup and view all the answers

What is the primary advantage of bulk (central) oxygen supply?

<p>Lower cost over long term (D)</p> Signup and view all the answers

What is the purpose of a centrally regulated delivery pressure in bulk (central) oxygen supply?

<p>To eliminate the need for separate pressure-reducing valves at each outlet (A)</p> Signup and view all the answers

What is the primary advantage of operating bulk (central) oxygen supply at low pressures?

<p>Increased safety compared to high-pressure cylinders (C)</p> Signup and view all the answers

What are the two forms in which bulk O2 can be stored?

<p>Gaseous and liquid (A)</p> Signup and view all the answers

What is the critical temperature for liquid oxygen?

<p>-118.6 degrees C (B)</p> Signup and view all the answers

How is liquid oxygen stored to maintain its liquid form?

<p>In large stand tanks at low pressure separated by an insulated vacuum (C)</p> Signup and view all the answers

What is the standard working pressure for gaseous oxygen after it flows through vaporizer coils?

<p>50-55 psi (D)</p> Signup and view all the answers

What is the purpose of the safety vent in the liquid oxygen system?

<p>To allow vaporized liquid O2 to escape if warming causes cylinder pressure to increase above a set limit (C)</p> Signup and view all the answers

What happens to the liquid oxygen when it is exposed to ambient temperature?

<p>It quickly converts back into a gas (A)</p> Signup and view all the answers

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