RE: Fire pump annual test

2012-10-03 Thread bcasterline
Tom, I guess once we equate what goes out of the tachometer with what goes into the thermometer, the speed does not change-- the magic of the second law of thermodynamics! (or, as you put it-- 'Pump affinity'). Quoting Tom Duross tduro...@comcast.net: Brad, we measure rpm as a means of

RE: Fire Pump on vibration spring type isolators

2012-10-03 Thread Matthew J. Willis
How about this from 20 (1999)..., 3.4.2 The base plate shall be securely attached to a solid foundation in such a way that proper pump and driver shaft alignment will be ensured. R/ Matt -Original Message- From: sprinklerforum-boun...@firesprinkler.org

RE: Fire pump annual test (VALVES)

2012-10-03 Thread Matthew J. Willis
I have the 99 edition, but know it is the others..., A 11.2.6.3 outlines the test procedure. Plus, I believe you will find that most Gate Valves are not listed for throttle duty, but must be either fully open or full closed. R/ Matt -Original Message- From:

RE: Fire pump annual test

2012-10-03 Thread Brad Casterline
Tom, let me back-up and try to benefit from your experience. The speed is not suppose to change, but it does, right? Years ago I helped a fitter with some annual tests-- no matter what the rating, we took all the readings at several (increasing) flow rates. I think I remember the speed dropping,

Which Code

2012-10-03 Thread Matthew J. Willis
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Re: Which Code

2012-10-03 Thread Aaron Peck
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Re: Which Code

2012-10-03 Thread Johnson, Duane (NIH/OD/ORS) [C]
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RE: Which Code

2012-10-03 Thread Matthew J. Willis
an arrow for me? Thanks. R/ Matt -- next part -- An HTML attachment was scrubbed... URL: http://fireball.firesprinkler.org/mailman/private/sprinklerforum/atta chments/20121003/4fa6706e/attachment.html

Re: Fire pump annual test

2012-10-03 Thread DJJ8389
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Re: Which Code

2012-10-03 Thread ampeck
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RE: Roof piping system

2012-10-03 Thread Art Tiroly
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Re: Fire pump annual test

2012-10-03 Thread bcasterline
thanks DJJ8389, that's what I thought. I guess electric motor drive is more consistent and closer to expectations than engine driven. As far as Tom's 'adjusting the pressure to rated speed' goes though, with electric we are at the mercy of the local Power and Light, whereas with engine