Artsi: Thanks for reeling me in. I'm tempted to agree with you and Johnny P. However API 600 recommends at least an undamped natural freq analysis for pumps driven by diesel engine >335hp. We are considering building this ourselves so I'm trying to gauge how deep the rabbit hole might be. In...
non-d: original plan was to mount pump separate however we could put it on the same skid structure as the engine if there are benefits. And just so we are clear, I may have used the term rigid shaft incorrectly, the shaft end connections would still have to accept some misalignment and axial...
At this point neither the drive shaft nor the coupling are selected. I suspect we would choose the rigid shaft as it would be simpler. While a universal shaft may allow us to move the engine down toward ground level, if we moved it all the way down we would be talking about a 33" drop over 60"...
We are going to install a vertical turbine pump (14,000 USgpm, 180 ft) driven by a diesel engine (Cat, V12, 875 HP, C27) as a backup effluent pump. As far as the mechanical drive goes, there will be a coupling on the engine, a ~5' long drive shaft and then an angle drive on top of and coupled...
I really should not have brought up the cost because the sensor is only the tip of the iceberg and it is not terribly relevant. It will cost whatever it costs.
I want to know if anyone with in the field experience has seen flux probes provide a real benefit to a ~25 MW 4 pole machine? What...
As the generator is not yet built we could have an opportunity to have the generator manufacturer install a sensor at the factory. I've looked into the price of the Iris sensor (~$5k) which seems high for the little black dodad with some wire and a JB. It is what it is though.
I would tend to agree with you however our electrical department does not get into generation issues on a regular basis and I have a very proficient power systems engineering consultant agreeing with the supplier on this one. While I don't want to get into the politics of project management and...
We are installting a 25 MW 4 pole, 1800 RPM generator made by Converteam. Our electrical department has requested that we look into having a flux probe sensor installed in the unit however the manufacturer has indicated that there is very little value on a 4 pole 1800 rpm machine of this size...
The is a follow-on question from another I possed about excitation control. We are also being offered the choice between a Woodward 505 and a GE RX3i PLC based governor for the speeed control system. Any thoughts on the merits of either one of these solutions? I think that the concept is that...
We are looking at two advantages: GE PLC is standard for our site and capital cost savings of ~40k. Your thoughts?
Is it often that an exciter needs adjustment in a hurry? Once they're setup for the system don't they just kinda work or not work?
TC.
We are in the middle of purchaing a tubine and generator package and GE has proposed a Converteam PLC based excitation control solution instead of the Basler 200N that we have farmiliarity with. I could be wrong but as I understand it, Converteam in the past had an industrial computer based...
I am looking at the next outage of our pulp mill and wanted to consider some options to threaded 316 schd 40 and welded 316 schd 40 for our white water piping (mildly acidic) and high pressure (<250 psi) water. Right now I'm considering Victaulic Pressfit and Viega Propress mostly in 2". I'm...
We are optimizing our vacuum system in a pulp machine room and will be running a bunch of 4, 6, 8, 12 and 14"Ø 316L pipe. The mill spec developed in the 60's called for 11 ga pipe. However it seems this is from the days when 11 ga was the cheaper alternative. Now it is more expensive so I...
