City main pressure
City main pressure
(OP)
Please advice me about the city main fire water header pressure ? what should it be ?
what is the refrence to NFPA please?
what is the refrence to NFPA please?
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RE: City main pressure
You need to provide a lot more information. What is the fire water for? What are you protecting? for starters, and we'll go from there.
May I suggest you go hire someone qualified, to answer your questions.
RE: City main pressure
My question is who or what regulates the city fire water main header pressure for cities and industrial cities?
RE: City main pressure
Water utilities are generally regulated by Utility or Corporation Commissions, Water Commissions, or both. Generally these agencies stay away from fire flow issues and are primarly concerned that the water remains potable and waste water is properly disposed of and treated.
Is your fire the one currently burning at a steel mill in Midlothian, Texas?
RE: City main pressure
Would you refer me to a code or a resource defind what pressure the city main should be on please.
RE: City main pressure
I'm in the US. You need to contact someone in your local government for the answer to your question.
Good luck.
RE: City main pressure
RE: City main pressure
http://www.teejan.com/gp_saudi_safety.html
This is not a referral as to their qualifications - it is based on simple web search.
RE: City main pressure
There are various methods/authorities mentioned in this manual for calculating fire flow requirements, but generally I think some of the higher classifications or demands per most methods/authorities are for protection of occupancies such as industrial plants etc.
RE: City main pressure
Don Phillips
http://worthingtonengineering.com
RE: City main pressure
If your plant was designed in accordance with NFPA standards in the USA, there should have been a detailed evaluation by a registered fire professional of the fire water source (as mentioned above.)
This detailed evaluation would include both the source pressure and flowrate.
If the flowrate was found to be acceptable, but the supply pressure was low, a booster pump arrangement would be necessary and should be included in the final plant design.
The custom booster pump must be configured, designed and periodically tested in accordance with NFPA guidelines. The required boost pressure and flowrate would depend on the plant configuration.
Some companies offer pre-packaged skids designed just for this purpose.
http://www.pattersonpumps.com/fireprepac.html
Looks like you awarded your plant design to the low bidder and got what you paid for..........
-MJC
RE: City main pressure
The answer in most cases in the US is nobody has the answer. There are places where a 26 PSI residual pressure is sufficient for use, if the flow is sufficient to boost.
A static pressure of 26 PSI is a very poor situation.
If you had very large water mains 26 PSI residual pressure may not be a bad thing.
Hope this helps.