Emea Static Sealing Training - Level Test

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| By Awglobaltrain
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Awglobaltrain
Community Contributor
Quizzes Created: 10 | Total Attempts: 1,692
Questions: 11 | Attempts: 161

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Emea Static Sealing Training - Level Test - Quiz

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Questions and Answers
  • 1. 

    All packing rings should be installed one ring at a time.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement suggests that when installing packing rings, it is important to install them one ring at a time. This implies that each ring should be carefully and individually placed, ensuring proper alignment and fitting. Installing them all at once may lead to misalignment or improper sealing, compromising the effectiveness of the packing rings. Therefore, it is crucial to follow a step-by-step approach while installing packing rings to ensure their correct installation and functionality.

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  • 2. 

    What is the calculation for determining the proper packing cross section for installation?

    • A.

      C.S. = (stuffing box bore - shaft diameter) / 4

    • B.

      C.S. = (shaft diameter - stuffing box bore) / 2

    • C.

      C.S. = (shaft diameter + stuffing box bore) / 2

    • D.

      C.S. = (stuffing box bore - shaft diameter) / 2

    Correct Answer
    D. C.S. = (stuffing box bore - shaft diameter) / 2
    Explanation
    The correct answer is C.S. = (stuffing box bore - shaft diameter) / 2. This calculation is used to determine the proper packing cross section for installation. By subtracting the shaft diameter from the stuffing box bore and then dividing the result by 2, we can find the appropriate cross section size for the packing material. This calculation ensures that the packing is properly sized to create a seal between the shaft and the stuffing box, preventing leakage.

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  • 3. 

    Graphite is less noble (more anodic) then Zinc.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Graphite is not less noble than zinc; in fact, graphite is more noble (less anodic) than zinc. The nobility of a material refers to its tendency to corrode or oxidize. In this case, graphite is more resistant to corrosion compared to zinc, making it a more noble material. Therefore, the correct answer is False.

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  • 4. 

    What are all requirements for compression packing?

    • A.

      Flexibility, wear resistance, strength, porous, abrasive

    • B.

      Flexibility, wear resistance, strength, chemical resistance, high friction

    • C.

      Flexibility, wear resistance, strength, chemical resistance, low friction

    • D.

      Flexibility, wear resistance, strength, chemical resistance, low thermal conductivity

    Correct Answer
    C. Flexibility, wear resistance, strength, chemical resistance, low friction
    Explanation
    Compression packing is used to create a seal in applications where fluid leakage needs to be prevented. The requirements for compression packing include flexibility, wear resistance, strength, chemical resistance, and low friction.

    Flexibility is necessary for the packing to conform to the shape of the sealing area. Wear resistance ensures that the packing can withstand the friction and abrasion that may occur during operation. Strength is important to maintain the integrity of the packing under pressure. Chemical resistance is needed to withstand the specific fluids or chemicals that the packing will be exposed to. Finally, low friction is desired to minimize heat generation and reduce wear on the packing material.

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  • 5. 

    Chesterton style 1600 is an expanded graphite packing reinforced with

    • A.

      Carbon Yarn

    • B.

      Stainless Steel Wire

    • C.

      Stainless Steel Foil

    • D.

      Inconel Wire

    Correct Answer
    D. Inconel Wire
    Explanation
    The correct answer is Inconel Wire. This is because Inconel wire is known for its high temperature and corrosion resistance properties, making it suitable for use in applications where extreme conditions are present. It provides additional reinforcement to the expanded graphite packing, ensuring durability and longevity in demanding environments.

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  • 6. 

    Which of the following Chesterton packings have an active corrosion inhibitor?

    • A.

      Style 5300

    • B.

      Style 1724

    • C.

      Style 1622

    • D.

      None of the above

    Correct Answer
    D. None of the above
    Explanation
    The question asks which of the given Chesterton packings have an active corrosion inhibitor. The answer is "none of the above," which means that none of the packings mentioned (Style 5300, Style 1724, and Style 1622) have an active corrosion inhibitor.

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  • 7. 

    Which Chesterton Packing would you select for the following application:Block Valve, Steam, 250°C

    • A.

      Style 1601

    • B.

      Style 1622

    • C.

      Style 1724

    • D.

      Style 1730

    Correct Answer
    A. Style 1601
  • 8. 

    Which of the following standards describes a test an qualification procedure for valves for fugitive emissions?

    • A.

      ISO 15848-1

    • B.

      API 622

    • C.

      API 589

    • D.

      EN 1514-1

    Correct Answer
    A. ISO 15848-1
    Explanation
    ISO 15848-1 is the correct answer because it is the standard that specifically describes a test and qualification procedure for valves for fugitive emissions. This standard provides guidelines for evaluating the ability of valves to control fugitive emissions through leakage and is widely recognized in the industry. API 622, API 589, and EN 1514-1 are not relevant to this specific topic.

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  • 9. 

    PTFE is used widely as a packing and gasket material because of its:

    • A.

      Temperature Resistance

    • B.

      Mechanical Properties

    • C.

      Strenght

    • D.

      Chemical Resistance

    Correct Answer
    D. Chemical Resistance
    Explanation
    PTFE, or polytetrafluoroethylene, is commonly used as a packing and gasket material due to its exceptional chemical resistance. It is highly resistant to corrosion and can withstand exposure to a wide range of chemicals, including acids, bases, solvents, and aggressive media. This makes it an ideal choice for applications where the material will come into contact with various chemicals, ensuring durability and longevity. Additionally, PTFE's chemical resistance also contributes to its ability to maintain its mechanical properties and strength, further enhancing its suitability for packing and gasket applications.

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  • 10. 

    Which of the following is a 45 degree angle cut which is typically used for valve packings in order to exclude visual leakage? 

    • A.

      A skive joint

    • B.

      Both a skive joint and a butt joint.

    • C.

      A butt joint

    • D.

      A pipe joint

    Correct Answer
    A. A skive joint
    Explanation
    A skive joint is a 45 degree angle cut that is commonly used for valve packings to prevent visual leakage. This type of joint allows for a tight and secure connection between two surfaces, ensuring that there is no visible leakage. It is a commonly used technique in industries where visual inspection is crucial, such as in valve packings where any leakage could indicate a malfunction or failure.

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  • 11. 

    Gland pressure will be distributed efficiently up to how many rings? 

    • A.

      1-2 rings

    • B.

      4-6 rings

    • C.

      10-12 rings

    Correct Answer
    A. 1-2 rings
    Explanation
    The correct answer is 1-2 rings. This means that gland pressure will be distributed efficiently up to a maximum of 1-2 rings. This suggests that the efficiency of pressure distribution decreases as the number of rings increases.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Feb 16, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 12, 2015
    Quiz Created by
    Awglobaltrain
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