I hate when they do that just to save a few fittings and valves.
You're supposed to not be impairing the system when testing the pump.  I
realize some systems cannot perform at all without the pump but some just
have it for hose demands.  If it's piped that way, how can you leave the
building on street supply (pump bypass) while the pump is being tested?  The
you have to flush through the pump as well?

Tom
GRS

This is on a plan I am reviewing for a local AHJ. I questioned the
engineer/designer's layout (actually rejected it) in a review letter.
He has the test header being fed from a tee in the by-pass line
located downstream of the check valve but upstream of the last
control valve. I was uncomfortable with that arrangement. (There was
also no shut-off valve in the test header line).

At 12:43 PM 9/19/2007, you wrote:
>Todd,
>
>You're a PE that specializes in fire and if this forum is any
>indication fire pumps seem to be a particular sub-specialty. What's
>this other guy usually do?
>
>On 9/19/07, FPDC <[EMAIL PROTECTED]> wrote:
> > The diagrams in NFPA 20 show the connection for the test header prior
> > to the valve on the discharge side of the pump. However, the diagrams
> > are located in the appendix and I can't seem to find any text
> > reference to it within the standard. Coul; someone enlighten me if
> > the is any and if so, where? I've called for this and am being
> > challenged by an engineer. Thanks
> >


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