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12 Cards in this Set
- Front
- Back
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Question 1: Does the Vibration and Loose Parts Monitoring System provide the plant with any protection features?
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Answer: No
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Question 2: What is the reason for having a Vibration and Loose Parts Monitoring System?
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Answer: Provides for early detection of loose metallic parts within the Reactor Coolant System.
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Question 1: In addition to providing a recorded signal of a loose part, what other type of signal is provided?
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Answer: audible.
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Question 2. To be detected a loose part must have at least how much kinetic energy and strike the inside surface of the RCS within how many feet of a sensor?
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Answer: 0.5 ft-lbf, 3 feet
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Question 1: The Loose Parts Subsystem consists of ____ independent instrumentation channels.
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Answer: 12
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Question 2: What is the purpose of the Vibration Subsystem proximitor?
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Answer: Drives the probe and converts the probe gap information into a proportional linear DC output voltage.
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Question 4. What three general areas are monitored for loose parts?
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Answer : Reactor vessel upper head Reactor vessel lower head Each SG reactor coolant inlet plenum
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Question 1: With the system in automatic, what is the sequence of events that are supposed to take place when a strike occurs near a sensor?
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Answer: 1) Channel alarm is activated, 2) Audible alarm is initiated, 3) Data is recorded 4) Selection of the alarmed circuit occurs, 5) Main Control Board alarm actuates.
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What was the cause of the Point Beach event?
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Answer: Failure of FME Controls
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What was the cause of the Vogtle event?
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Answer: Failure of Split Pins
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What potential problem exists if a plant continues operating after indications of a loose part are evident?
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Answer: Damage to Tubes Tube sheet and Fuel Rods
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What tools/techniques are used at WGCS to prevent similar occurrences?
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Answer: Split Pins were changed out. DMIMS was installed
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