NTRS - NASA Technical Reports Server

Back to Results
Topping turbine (103-JAT) rotor instability in 1150-STPD Kellogg ammonia plantsIn two of Agrico's three plants, instabilities in the rotor/bearing system have been an ongoing problem. On occasion plant rates, i.e., machine speed, have been restricted in order to limit the exhaust and shaft relative vibration on the 103-JAT to a maximum value of 89 micrometer (0.0035) peak to peak. The purpose is to acquaint one with Agrico's experiences with exhaust end vibration and rotor instabilities on the 103-JAT topping turbine. The final conclusions arrived at were based on: (1) field acquired data both during steady state and transient conditions; (2) computer modeling of the rotor/bearing system; and (3) vibration data taken from a control rotor during a series of test runs in a high speed balancing machine from 0 to 110% of operating speed.
Document ID
Document Type
Conference Paper
Thomas, R. (Agrico Chemical Co. Donaldsonville, LA, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: NASA. Lewis Research Center Instability in Rotating Machinery
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

Available Downloads

NameType 19860020716.pdf STI

Related Records

IDRelationTitle19860020688Analytic PrimaryInstability in Rotating Machinery