Roland,
I have read the TIAs. They seem to deal with New Installations only.
What is going on concerning the original Safety Alert issued in July which
stated to remove all Anti-Freeze in existing residential systems?
Regards,
G. Tim Stone
G. Tim Stone Consulting, LLC
NICET Level III Engineering Technician
Fire Protection Sprinkler Design
and Consulting Services
117 Old Stage Rd. - Essex Jct., VT. 05452
TEL: (802) 434-2968 Fax: (802) 434-4343
[email protected]
> -----Original Message-----
> From: [email protected] [mailto:sprinklerforum-
> [email protected]] On Behalf Of Roland Huggins
> Sent: Wednesday, August 18, 2010 11:06 AM
> To: SprinklerFORUM
> Subject: AFSA Alert - Antifreeze
>
> Here's the AFSA alert that's going out this morning
>
> Roland
>
> American Fire Sprinkler Association
>
> Technical Alert
>
>
> August 18, 2010
>
>
>
> NFPA Issues Standards Council Decision on Antifreeze Systems in
> Residential Occupancies
>
>
>
> August 16, 2010, the National Fire Protection Association (NFPA)
> Standards Council issued a decision on the proposed Tentative Interim
> Amendments regarding antifreeze in residential fire sprinkler
> systems. The council's decision is to ". prohibit the use of
> antifreeze solutions within all NFPA 13D applications and within the
> dwelling unit portions of NFPA 13 and NFPA 13R sprinkler systems."
>
> However, the Standards Council also directed that the responsible
> technical committees conduct further activities in regard to this
> question.
>
> As identified in the "AFSA Member Alert" sent July 7, NFPA issued a
> safety alert on antifreeze in residential systems July 6, 2010,
> following a research study and an initial set of fire tests after a
> fire incident raised concern.
>
> At it's August 3-5 meeting, The NFPA Standards Council considered six
> tentative interim amendments (TIAs), two for each standard - NFPA 13,
> 13R, and 13D. One TIA said antifreeze shall not be used in dwelling
> units and the other restricted all antifreeze compounds to a maximum
> concentration of 50%.
>
> As a result of that meeting, the Standards Council has released TIAs
> 1000 on NFPA 13, 995 on NFPA 13R, and 994 on NFPA 13D effectively
> stating antifreeze shall not be used in dwelling units.
>
>
>
> Investigation Continues
>
> As indicated in the Council decision, this should be viewed as a
> moratorium. The Council urged the technical committees to address this
> issue again prior to the next Council meeting in Oct 2010. The Council
> also made a point of emphasizing that releasing these TIAs is not
> intended to be the final technical determination on whether antifreeze
> should be allowed or at what concentration nor is it intended to
> prejudge the merit of any further revisions.
>
> The fact that the report from the Fire Protection Research Foundation
> (FPRF) titled "Antifreeze Solutions in Home Fire Sprinkler Systems:
> Phase II Research Interim Report" (2010) was not available to the
> technical committees prior to their balloting on the TIAs had a
> significant impact on how this issue developed. Due to the emergency
> nature of this issue though, the Council had to act. Since it is
> inappropriate for the Council to modify an existing TIA or to write a
> new one, they took the most conservative approach and released the
> TIAs. The decision by the Council, the FPRF report and the TIAs are
> available at www.nfpa.org/antifreeze.
>
>
>
> The FPRF report identified that concentrations exceeding 50% by volume
> for glycerin and 40% for propylene glycol were not appropriate for use
> in residential sprinkler systems. One of the questions that the
> technical committees have to answer in defining a maximum
> concentration is how large a safety factor is necessary.
>
> AFSA will continue to work closely with NFPA and keep you informed on
> future developments. Complete information is available from NFPA at
> www.nfpa.org/antifreeze/
> .
>
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