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</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</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</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</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</p> Signup and view all the answers

    Which safety system is specifically designed for low pressure connection?

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

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

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

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

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

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

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

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

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

    What color is a gas cylinder containing Nitrogen?

    <p>Black</p> Signup and view all the answers

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

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

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

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

    Which organization is responsible for providing recommendations for cylinder safety?

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

    How is Nitrous Oxide (N2O) commercially produced?

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

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

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

    Which gas is a pulmonary vasodilator to improve oxygenation?

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

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

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

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

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

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

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

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

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

    What is the critical temperature for liquid oxygen?

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

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