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I have to have vibration sensors installed in a gearbox and am wondering if there are any good (preferably downloadable) papers on where and how to mount them. Thanks Chris

Don't worry Canuckminer, no valves in the system. It's been in operation as is for around 20 years, the only change we are considering is going from a gravity fed surface tank to pumping from the delivery truck. Chris

Thanks Guys, Between this thread and the archived one above I've resolved most of my concerns. Chris

I gather you would like to build a dyno for measuring the power of your engine, possibly a car or motocycle? The calculations should be fairly simple if you can measure the flow and pressure for a pump discharge and factor in the pump efficiency and drive it all from the car or bike. The...

I just went through a similar exercise in our plant and we wound up using a presurized loop so the fluid didn't have a chance to plug the line. It doesn't carry solids but has a tendency to create a build up on the inside of the pipe if it sits too long or slowely. We used about 300 ft of 1"...

I am trying to calculate the flow rate by gravity in a 1" sch 80 pipe in the shaft of one of our mines. The pipe is 4300 ft long with a 4300 ft elevation diference, effectively all of the pipe is vertical. Currently we are allowing one tank on surface to feed the tanks under ground at about 75...

The threads for the cover on our compressor heat exchangers have become worn to a point where if you turn the bolt in it can wiggle some. Is there an easy rule of thumb for determining if the threads should be repaired or best left alone? Given that they on occasion use longer bolts through...

We are installing a new Xanthate system in our mill and are considering a flexible PVC hose for a 500' run to the storage tank. Has anyone come across a code such as ASME that would be applicable for this. There will not be a valve on the end of the pipe and it would be located out of reach of...

We are looking at changing out some shaft piping in one of our wet head frames. The problem is the mine will only be running for another 3 years. Does anyone have any literature on the expected corosion rate for pipe in this environment? The pipe has lost 8 to 30% of it's original thickness...

It may not be relevent because I am in Canada but technically all non union employees are salary at my current employment. It sais I work 40 hours per week on my pay stub but not an actual hourly rate, just the biweekly amount. It is pretty easy to figure out what this is. If I work OT I am...

This should be an easy one, what type of gravel should I be using to make a base to put my shed on? The local supplier can give me anything I want from their pit. I plan to put doun about 6" and compact it, then the city requires presure treated 6X6's.

As part of our process I will have to reduce the level in a small lake that forms on top of our waste rock containment by about 1 meter. The average inflow is 900 US GPM and the water will only have to be piped a short distance overt he final spill way. How would I get the flow started? I...

As part of our process I will have to reduce the level in a small lake that forms on top of our waste rock containment by about 1 meter. The average inflow is 900 US GPM and the water will only have to be piped a short distance overt he final spill way. How would I get the flow started? I...