VALVE SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Oct 26, 2023
app pub date -
Oct 21, 2021
filing date -
Oct 28, 2020
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Abstract
A method of determining reliability of an element (15) of an actuator of a valve closure member (25) comprises applying a signal from a signal source (18) comprising one of a current source, or a voltage source, through the element (15) of the actuator (14). The element (15) is adapted to hold a subsea valve closure member (25) in a position whereby fluid flow through the valve is enabled. Time varying values of at least one of amplitude or frequency of the signal flowing through the element are measured. The measured values are compared with predetermined values and an indication is provided, if the measured values are outside an acceptable range, or threshold.
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