Mike et al:
The bad news is that no one in the fire protection community will even no
this is coming. Think back to still recent changes to structural engineering
standard adopted by reference by IBC, for sprinklers in grid ceilings in
seismic design areas. Surprise. The only hope is the right person in the
fire business being married to the right Phd on the water supply side. And
you need to hope they talk shop at home.
All the water purveyors in my State are required to report metered water
into their system, and metered water provided to customers. The delta is
assumed to be leakage. Above a threshold they are required to implement a
leak reduction program.
There is good news. The fire protection business will eventually be forced
to give up flushing tens of thousands of the Citizen's water out of new
risers, and move to pigging for new or rebuilt underground supply lines. A
few 10" poly cubes passing though an 8" line, are the definitive way to
clean pipe. Much better than a seldom achieved 10 lf/s.
Bv
-----Original message-----
From: Mike Cabral <[email protected]>
To: "[email protected]" <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Fri, Feb 22, 2013 20:05:39 GMT+00:00
Subject: Re: Flow switch problem
Just wait until the Federal Government gets involved regarding water
conservation. I did some research and if Australia is to be the model and I
think it will . . . water recovery, testing intervals, matching system
demand with supply (clay valve on every system) Fire pump testing stretched
way out . . . everything will change and 25 will be rendered toothless. A
lot of money has been spent down under and they have made a great impact on
water loss. Coming to a sunbelt near you soon. I'm just saying.
Economics a little different because water costs so much more there.
Difficult balance between system testing schedules and dumping water. Even
draining for modifications. . . The water out and goes back in unless you
have a gray water recovery system.
Time to look into drain layer ticket.
Mike
Sent from my iPhone
On Feb 22, 2013, at 1:42 PM, "Bruce Verhei"<[email protected]> wrote:
Following off wandering conversation to #25 and how in depth it needs to
be.
Ron et al:
I think this all goes to the why of fire protection system.
A 250' x 70' on grade strip retail and cafe building needs a different
degree of systems reliability than a polyurethane foam manufacturing plant
or a tall building.
I am not sure that assigning several levels of risks and the concept of
mean time to failure, and fault tree analysis are used to assign
appropriate levels of ITM to a particular site.
Bv
-----Original message-----
From: Ron Greenman <[email protected]>
To: [email protected]
Sent: Thu, Feb 21, 2013 22:10:54 GMT+00:00
Subject: Re: Flow switch problem
Interesting comment Roland (and I noticed that it was made without
hatred).
Back in 13A days, with less things to check and very spotty enforcement
the
"should" did we miss so much that an ever increasing demand per 25 solve?
Have we reached or already exceeded the point of diminishing return with
25? Are these questions being asked? Something to think about.
On Thu, Feb 21, 2013 at 8:05 AM, Roland Huggins
<[email protected]>wrote:
That's a different issue which some argue can apply to a lot of NFPA 25.
Some of us have started preaching (some may say harping) that we can't
just say will an activity improve the reliability of the system but
what's
the cost/benefit relationship. The higher the cost goes, the lower the
probability of ANYTHING being checked (other than the curb where they
stop
to write the report).
Roland
On Feb 21, 2013, at 7:34 AM, Greg McGahan <[email protected]> wrote:
> Waste of money....
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Ron Greenman
Instructor
Fire Protection Engineering Technology
Bates Technical College
1101 So. Yakima Ave.
Tacoma, WA 98405
[email protected]
http://www.bates.ctc.edu/fireprotection/
253.680.7346
253.576.9700 (cell)
Member:
ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC
They are happy men whose natures sort with their vocations. -Francis
Bacon,
essayist, philosopher, and statesman (1561-1626)
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