• Broken discharge valve on a reciprocating compressor at an oil and gas pipeline

What did GE's analytics software find?

On March 30th, the GE SmartSignal solution detected an increase in the cylinder discharge temperatures of a reciprocating compressor at an oil & gas pipeline. Discharge temperatures increased to as high as 285°F (140°C), when they were historically expected to operate around 265°F (129°C). GE’s Industrial Performance and Reliability Center (IPRC) added this item to the weekly report for discussion with the customer.

 

What was the underlying cause?

Upon investigation, the site discovered a broken discharge valve on the crank end of the compressor. The unit was brought down for a short period to fix the issue.

 

What was the value to the customer?

After being notified by the IPRC, the site was able to quickly schedule a time when they could take this compressor offline to replace the valve. If this compressor operated unnoticed, the discharge valve might have failed completely along with major damage to other machine parts, causing higher repair costs and longer downtime. The IPRC was able to verify that the maintenance actions were successful by showing that actual values returned to expected.

Screenshot depicting increases in actual cylinder discharge temperatures (blue) versus model prediction (green).

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