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Predictive approach to avoid a force outage.
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Unit 1 Unit 4
dB reading: 36 decibels 60 decibels
Sensitivity value: 40 40
Frequency: 40 kHZ 40 kHZ
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Comment: 1) Unit 3 FRP seal header with crack opening exhibits relatively higher dB readings than Unit 1 (no defect). 2) This header defect is one evident that cause the unit 4 derated condenser vacuum. 3) To avoid a forced outage, a scheduled repair must be made after completing the necessary preparation.
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