Continuing my old thread https://www.eng-tips.com/viewthread.cfm?qid=490736
Does anyone ever experience this issue? We've recently extended our inspection from 3 months to 6 months and see that the scratch mark on the containment shell was more appearing than 3 monthly inspections.
@BlaineMS...
Hi all,
We got high vibration on 1.66X shaft speed of a vertical cantilever pump (at 2250 cpm). The RMS of Motor NDE bearing is 13 mm/s (being the highest). The motor is variable speed with rated of 1475 rpm. During the measurement the speed was 1349 rpm. Any thoughts on why this is happening...
Hi everyone,
We have experienced weak acid pump failure (again). This pump type is magnetic drive pump (Innomag C4 3x1.5x10) The fluid pumped is nitric acid 40% with temperature of 55 degC and differential head of 1700 kPag. This is the assembly of the pump:
The start up went well however we...
