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"Fine," Leo muttered. "I’ll update the scope. But you owe me."
Then she saw the table she was looking for: Parameters that increase susceptibility. Her finger traced the words: Total Acid Number (TAN) > 0.5 mg KOH/g. Temperature range: 450°F to 750°F. api rp 571 pdf
Marta grabbed her hard hat and walked to the heater. The unit was humming, but she remembered an internal corrosion probe reading from three months ago—a spike in iron content. The operations crew had blamed a "blip in the feed." "Fine," Leo muttered
Silence on the line.
Back in her office, she called Leo. "We need to add guided wave ultrasonic testing on the transfer line elbows and a full NAP inspection scope." Her finger traced the words: Total Acid Number (TAN) > 0
She pulled up the crude assay for the next two years. TAN: 1.2. Temperature at the heater outlet: 620°F.
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