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Enron Mail |
FYI
---------------------- Forwarded by Susan Scott/ET&S/Enron on 05/03/2000 08:42 AM --------------------------- James Pfeffer@ENRON_DEVELOPMENT 05/02/2000 08:35 PM To: Michel Nelson/ET&S/Enron@ENRON, John R Keller/OTS/Enron@Enron, Ray Smith/ET&S/Enron@ENRON, Lorraine Lindberg/ET&S/Enron@ENRON, Arnold L Eisenstein/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Steven Harris/ET&S/Enron@ENRON, James Pfeffer/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Rich Jolly/ET&S/Enron@ENRON, Jeffery Fawcett/ET&S/Enron@ENRON, Rich Plachy/Enron Communications@Enron Communications, David Roensch/ET&S/Enron@ENRON, Team Gallup/ET&S/Enron@ENRON, Ronald Matthews/ET&S/Enron@ENRON, Earl Chanley/ET&S/Enron@Enron, Vera Jones/ET&S/Enron@ENRON, Brian H Mellon/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, John G Keller@EES, Phil Lowry@ENRON, Darrell Schoolcraft@ENRON, Susan Scott@ENRON, Kevin Hyatt@ENRON cc: Subject: Gallup - Status Update The Rolls-Royce vibration engineer has reported that the compressor itself is not inducing the abnormal vibration levels on the drive end bearings. The engineer did report that the vibration is high for a new compressor, but not harmful to the compressor for the short term. It is Rolls engineer's opinion that the excessive bearing vibration is due to vibrations created by gas flow through the suction strainer. Rolls will be reviewing the gathered vibration data over the next few days to provide any further feedback. TW Ops, via independent tests, has determined that the amplitude of the vibration that is eminating from the suction strainer is at a level which can, over time, be detrimental to the mechanical integrity of the unit piping. EECC, TW Ops Mgmt, and the TW Ops Team have discussed the situation and have decided to temporarily take the unit out of service to pull the suction strainer. The strainer will be inspected for foreign material or damage. The strainer will not be replaced unless some foreign material is found. It is hoped that the removal of the strainer will 'de-tune' the piping system. EECC, TW Ops Mgmt, and the TW Ops Team all feel that the risk of running without the startup strainer is minimized since the unit has been running intermittently for the past few days and has accumulated some significant run time. It is expected that any foreign material in the suction piping should have already been caught in the strainer. Secondly, the station was designed with a suction scrubber which will further protect the compressor. It is expected that the unit will be unavailable until midnight May 4, while the startup strainer is removed. Care must be taken during the reinstallation of the piping spool as to not affect the compressor alignment or apply stress to the compressor nozzles. James Pfeffer
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