Appropriate standards for water treatment plant pumps

[Bjegovic]

Hi!
I am a mechanical engineer involved in design (and consequently in writing of procurement specifications for different centrifugal pump types) for a huge water treatment plant. During my work, I would like to reffer to a standard recognised in pump engineering (prefferably north-american).

Which standard do you recommend (API, ANSI, ASME or other)? Is it true that API standard usually defines more robust and reliable pump constructions and is it suitable for the water treatment plant, since it is originally used for the oil industry pumps?

Is there a way to access these standards for free, and if not, what is the most affordable way for purchasing the standard you recommend?

Thanks in advance!

 

[RWF7437]

For a water treatment plant I would suggest you refer to American Waterworks Association Standards (AWWA). They are the most widely used in this field and cover virtually every aspect of water treatment and distribution.

Also, do go visit several treatment plants in your area and TALK to the people who operate them. They'll tell what is and is not reliable.

good luck

 

[stanier]

There are a number of ISO standards that cover the topic.

In my opinion you are best served just using a data sheet rather than trying to tell pump manufacturers how to design and build pumps.

Use reputable manufacturers, look at whole of life costing, visit plants and see what is still running after 25 years,check out the websites, request spares proposals when you invite tenders and check out the pricing ( usually a good guide to those trying to sell you a cheap pump and make their money on the spares.

In your tender seek a five year maintenance provision at a fixed price. The fly-by-nighters will be scared away.

The standards that are out there tend to have so many options that you have to learn the subject any how.

Depending on the size of pumps you might look to ITT Flygt, Flowserve, Sulzer, KSB, Sihi, TKL (Australia) as providing good quality pumps. Apologies to anyone I have left off the list.