Funny thing here is......

If this building were to burn down at some point in the future, the owner's
insurance company would argue that the contractor who replaced the sprinkler
heads should have known the system wasn't adequate for the hazard
classification of the building. They would argue that, at the very least,
the sprinkler contractor should have notified the owner of the potential
problem. That would have given the owner the ability to upgrade the system
and therefore the sprinkler contractor was negligent and responsible, in
part, for the building  burning to the ground.

As contractors, we are damned if we do or damned if we don't. 

Mike Hill

-----Original Message-----
From: Sprinklerforum [mailto:[email protected]]
On Behalf Of Jim Davidson
Sent: Wednesday, April 27, 2016 1:57 PM
To: [email protected]
Subject: RE: Existing pipe schedule and storage

Todd,

Be careful with this. 

We recently finished a case where the building was constructed in the early
1950's and protected with a pipe schedule system (extra-hazard) 90 sq ft per
head, for a plastic bottle regrinding process, regrind plastic in boxes to a
height of 8 ft., sprinkler contractor was contracted to replace sprinklers
with like type and kind since existing "old" heads were greater than 50
years old. During the head replacement process sprinkler contractor employee
(fitter) notified the AHJ that the building was considered a hazard since
the sprinkler system was pipe schedule and illegal and could not protect the
hazard. AHJ went to site and issued a "cease operations order" under the
AHJ's imminent hazard provision of AHJ's municipal codes. 

Building owner then hired lawyer and engineers to assist Owner in battle
with AHJ and sprinkler contractor (due to employee calling AHJ) during
discovery process the Building Owner produced the original "Approved" by AHJ
sprinkler drawings and documents which indicated process and storage areas
and storage configuration and arrangement on the sprinkler plans by original
sprinkler contractor shop drawings, along with the original C of O. The
brief version is: the sprinkler system at time of installation was in code
compliance at time of installation, the sprinkler system was approved and
the occupancy of the building has not changed since approval and is
therefore a proper and code compliant sprinkler system. In the end the
sprinkler contractor agreed to pay the Owners legal cost and expenses as
part of a negotiated settlement. The AHJ was at risk since the building
owner had all of the documentation that the sprinkler system was legally
installed. 

If the sprinkler system was designed to the legal code at time of
installation, the installation was permitted and approved by the AHJ at time
of installation and the occupancy has not changed since installation, then
the sprinkler system is still providing protection for the occupancy and is
legal in accordance with the code. There is no requirement in NFPA 13 that
requires an existing code compliant sprinkler system to be upgraded to meet
the new NFPA 13 standards without a change of occupancy (not change of
ownership).

Again be very careful with this and be sure your scope of work as the
engineer is very well defined.

Have a fire safe day.

Jim 

      

DAVIDSON ASSOCIATES

Fire Protection Engineering     P. O. Box 4002
Code Consultants        Greenville, DE  19807
        (302) 994-9500
        Fax (302) 994-3414

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Thank you for your cooperation.

-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]] On Behalf Of Todd
Williams
Sent: Wednesday, April 27, 2016 6:46 AM
To: [email protected]
Subject: Existing pipe schedule and storage

I am working at a facility where there is an existing OH pipe schedule
system over 12ft palletized Class IV storage. The fire department has
approved it, but I question whether it will provide adequate protection.
I did not see anything in NFPA 13 that requires storage occupancies to be
hydraulically calculated. Am I missing something?
This is outside of the project I am working on, but as an FPE, I feel
obligated to notify someone if I see a potential hazard such as this.

Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT
860-535-2080 (ofc) 860-608-4559 (cell)
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