Rotating Equipment Advanced Training Packing Test (English)
Questions and Answers
- 1.
What is a common Failure Mode for packing?
- A.
Water enters the bearing
- B.
Uncontrollable Leakage
- C.
Excessive Vibration
- D.
I don't know
Correct Answer
B. Uncontrollable LeakageExplanation
Uncontrollable leakage is a common failure mode for packing. When packing is not properly sealed or maintained, it can result in leaks that are difficult to control or stop. This can lead to loss of product, contamination, and potential damage to equipment or surrounding areas. Therefore, addressing and preventing uncontrollable leakage is essential to ensure the proper functioning and reliability of packing systems.Rate this question:
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- 2.
The best way to begin a packing failure analysis is to..
- A.
Disassemble the pump and check the bearings
- B.
Carefully remove the packing from the stuffing box and place it somewhere in the order it was removed
- C.
Blame the installation
- D.
Check the shaft for wear
Correct Answer
B. Carefully remove the packing from the stuffing box and place it somewhere in the order it was removedExplanation
The best way to begin a packing failure analysis is to carefully remove the packing from the stuffing box and place it somewhere in the order it was removed. This is because by doing so, the analyst can observe and analyze the condition and arrangement of the packing material, which can provide valuable insights into the cause of the failure. Disassembling the pump and checking the bearings, blaming the installation, or checking the shaft for wear may be necessary steps in the analysis process, but they do not specifically address the initial step of examining the packing material.Rate this question:
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- 3.
What type of packing can be used as an anti extrusion ring?
- A.
An square interbraided packing with corner reinforcement
- B.
A Kevlar Packing
- C.
A graphite packing with good lubrication
- D.
A GFO packing
Correct Answer
A. An square interbraided packing with corner reinforcementExplanation
An square interbraided packing with corner reinforcement can be used as an anti extrusion ring because it has a strong structure that prevents extrusion of the packing material under high pressure. The corner reinforcement further enhances the packing's resistance to extrusion, making it an effective choice for preventing leakage in applications with high pressure and temperature conditions.Rate this question:
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- 4.
Packing uses more energy than a mechanical, even when installed and adjusted properly
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The explanation for the given answer, "False," is that packing does not use more energy than a mechanical system, even when installed and adjusted properly. Packing refers to the use of a sealing material, such as gaskets or O-rings, to prevent leakage in a system. While packing may require periodic maintenance and adjustment, it generally does not consume more energy than a mechanical system, which typically involves moving parts and motors. Therefore, the statement is false.Rate this question:
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- 5.
What is the function of the Spiral Trac separation chamber
- A.
To create a cavity for the flush water to enter
- B.
To create radial and axial flow not generated by the packing
- C.
To allow particles to enter the stuffing box
- D.
To expel air from the stuffing box
Correct Answer(s)
A. To create a cavity for the flush water to enter
B. To create radial and axial flow not generated by the packingExplanation
The Spiral Trac separation chamber serves two functions. Firstly, it creates a cavity for the flush water to enter, allowing for effective flushing and cleaning of the system. Secondly, it generates radial and axial flow that is not produced by the packing alone. This flow helps to prevent the build-up of particles and debris, ensuring smooth operation and reducing the risk of blockages or damage to the system.Rate this question:
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- 6.
Chesterton 1730 packing uses META Aramid fibres which conduct shaft heat more efficicently
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given statement is true. Chesterton 1730 packing uses META Aramid fibers which conduct shaft heat more efficiently. This means that the packing material is designed to transfer heat away from the shaft, preventing overheating and potential damage. META Aramid fibers are known for their high heat resistance and excellent thermal conductivity, making them an ideal choice for applications where heat dissipation is critical. By using these fibers, Chesterton 1730 packing ensures effective heat transfer, ultimately enhancing the performance and longevity of the shaft.Rate this question:
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- 7.
Which questions do you ask the customer on the first visit?(You can select more than one)
- A.
What problems do you have with packing?
- B.
How many Pumps do you manage?
- C.
Where do you buy your packing from?
- D.
What is the process for placing orders
Correct Answer(s)
B. How many Pumps do you manage?
D. What is the process for placing ordersExplanation
The question asks which questions should be asked to the customer on their first visit. The correct answers are "How many Pumps do you manage?" and "What is the process for placing orders?". These questions are important because they help gather information about the customer's needs and preferences. Knowing how many pumps they manage can help determine the scale of their operations and the quantity of packing materials required. Understanding the process for placing orders is crucial for providing efficient and timely service to the customer.Rate this question:
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- 8.
When calculating the operating cost for the customers you should use...
- A.
The cost of the packing and sleeve
- B.
All of the related costs. Power, Product, Water, Disposal, Maintenance hours
- C.
The customer should do this
Correct Answer
B. All of the related costs. Power, Product, Water, Disposal, Maintenance hoursExplanation
The correct answer is "All of the related costs. Power, Product, Water, Disposal, Maintenance hours." When calculating the operating cost for customers, it is important to consider all the related costs involved in the process. This includes the cost of power consumed, the cost of the product used, the cost of water used, the cost of disposal of waste materials, and the cost of maintenance hours required. By considering all these factors, a comprehensive and accurate assessment of the operating cost can be made, providing a better understanding of the financial implications for the customers.Rate this question:
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- 9.
Calculate the length of the packing required to seal this application80mm Shaft Diameter105mm Stuffing Box Diameter5 Packing rings installed
- A.
1.25 Metres
- B.
1.45 Metres
- C.
1.65 Metres
- D.
0.29 Metres
Correct Answer
B. 1.45 MetresExplanation
The length of the packing required to seal this application can be calculated by finding the circumference of the stuffing box and multiplying it by the number of packing rings installed. The circumference of the stuffing box can be found by adding the diameter of the shaft (80mm) and the diameter of the stuffing box (105mm), and then multiplying the sum by pi (3.14). This gives a circumference of 502.6mm. Multiplying this by the number of packing rings installed (5) gives a total length of 2513mm, which is equivalent to 2.513 meters. Therefore, the correct answer is 1.45 meters.Rate this question:
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- 10.
1400R provides excellent service life and reduced shaft wear because it has no lubricants that can be 'washed' out of the packing.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because 1400R does not contain any lubricants that can be washed out of the packing. This means that the packing will not lose its lubrication over time, resulting in excellent service life and reduced shaft wear.Rate this question:
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- 11.
The best packing materials for extended service life...(You may select more than one)
- A.
Contain Fibres that are capable of quickly dissipating heat
- B.
Are excellent thermal and electrical insulators
- C.
Are self lubricating and prevent shaft corrosion
- D.
Have a high co-efficient of friction to stop the leaking fluid quickly
- E.
Has a lubricant content to aid Break In
Correct Answer(s)
A. Contain Fibres that are capable of quickly dissipating heat
C. Are self lubricating and prevent shaft corrosionExplanation
The best packing materials for extended service life are those that contain fibers capable of quickly dissipating heat. This helps to prevent overheating and damage to the packing material. Additionally, these materials are self-lubricating, which reduces friction and prevents shaft corrosion. By preventing corrosion, the packing materials can maintain their integrity and effectiveness for a longer period of time.Rate this question:
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- 12.
When considering the application temperature when selecting packing a good rule is to...
- A.
Select a packing that meets the application temperature
- B.
Select a packing that can handle double the temperature
- C.
Selecting only the packing with the highest temperature capability
Correct Answer
B. Select a packing that can handle double the temperatureExplanation
When selecting packing for an application, it is important to choose a packing that can handle double the temperature. This is because the packing may be exposed to high temperatures during operation, and selecting a packing with a higher temperature capability ensures that it will not degrade or fail under these conditions. By choosing a packing that can handle double the temperature, there is a greater margin of safety and reliability in the application.Rate this question:
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