I should also point out that the NFPA 12-2005 revisions were introduced in response to tragic events that resulted in deaths where the system was "locked out" electronically but the system discharged anyway.
In addition, the safety provisions that got written into the 2005 edition of NFPA 12 were one of the very few times that a new edition of the code had provisions that were retroactively applicable to all previous installations - due to the potential deadly consequences if they were not so applied. John Hoffman P.E. | Fire Protection Engineer | Facility Engineering Services, KCP, LLC - Burns & McDonnell Engineering | National Nuclear Security Administration's Kansas City Plant | Operated by Honeywell FM&T | 2000 E. 95th St | Kansas City, MO 64131 | ph 816-997-7213 | [email protected] From: [email protected] To: [email protected] Date: 03/15/2010 01:00 PM Subject: Re: Carbon Dioxide Total Flooding System - BS 5306-4 Requirements- URGENT ! Sent by: [email protected] The NFPA standard on CO2 systems was revised in 2005 for the safety equipment - pneumatic horns, mechanical delay, etc. If the BS standard is a 2001 edition it pre-dates the safety revisions of NFPA 12-2005 and, thus, would not have these provisions. John Hoffman P.E. | Fire Protection Engineer | Facility Engineering Services, KCP, LLC - Burns & McDonnell Engineering | National Nuclear Security Administration's Kansas City Plant | Operated by Honeywell FM&T | 2000 E. 95th St | Kansas City, MO 64131 | ph 816-997-7213 | [email protected] [email protected] wrote on 03/15/2010 11:26:52 AM: > [image removed] > > Carbon Dioxide Total Flooding System - BS 5306-4 Requirements- URGENT ! > > Reza Esmaeili > > to: > > firealarm, SprinklerFORUM > > 03/15/2010 11:27 AM > > Sent by: > > [email protected] > > Please respond to sprinklerforum > > Thanks all, > All the comments were really helpful. > I checked again with the system designer, he says that he has > designed as per BS 5306-4:2001. > Does BS 5306-4 needs Lock-out valve, pneumatic siren and pneumatic > time delay? I have read 5306-4, it doesn't say anything clearly. > > Thanks, > Reza > > > > > > > > ________________________________ > From: "[email protected]" <[email protected]> > To: [email protected] > Sent: Sat, March 13, 2010 10:20:29 PM > Subject: Re: [firealarm] Carbon Dioxide Total Flooding System > Requirements- Urg ent Question! > > > Reza, > These are all good questions. I usually would prefer to err on the > side of life safety. Given the parameters, I would treat it as a > normally occupied space. I would have the time delay and predischarge alarm. > If you don't treat it that way, during the occupied times, you face > the possibility that if the system discharges, 1 or more persons may > not get out alive. What type of equipment is being protected that > would need a total flooding CO2 system? > The next big question would be, when was the system installed and > under what version of NFPA 12? > Best of luck. > KR Dixon > Master Tech > Carter Brothers Fire and Life Safety > > Hi All, > I am involved in a project that there is an existing CO2 system in a > building with the below specifications: > > - The building has three under ground floors. > - There is CO2 Total Flooding System in floors -1, -2 and -3. > - Only 2 days per week personnels work 4 hours/day (5 days per week > the building is closed) > > My questions are as below: > 1 - Is this building a Normally Unoccupied Enclosure or Normally > Occupied Enclosure ? > 2- I know plenty of suitable safe alternative options, but at the > moment I just want to know if NFPA 12 allows this system to be > existed in this building. > 3- Does this system needs Predischarge Alarm and Time Delay as per NFPA 12 ? > > > I appreciate your prompt response! > Thanks, > Reza > ____________ _________ _________ _________ _________ _________ _ > Medical Insurance > Click to find great rates on medical insurance, save big, shop here. > http://thirdpartyof fers.juno. com/TGL2131/ c?cp=JU-dmdpMW_ > LtR5oo8Afs2gAAJz 3M3xCcopgno9oyoK C9NPg1AAYAAAAAAA AAAAAAAAAAAADNAA > AAAAAAAAAAAAAAAA AQVgAAAAA= > > [Non-text portions of this message have been removed] > > > __._,_.___ > Reply to sender | Reply to group | Reply via web post | Start a New > Topic Messages in this topic (1) > Recent Activity: * New Members 1 > Visit Your Group > The above messages do not necessarily reflect the opinion or > official position of the Automatic Fire Alarm Association. > > Switch to: Text-Only, Daily Digest • Unsubscribe • Terms of Use > . > > __,_._,___ > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
