Dear Brad,my issue the design of CO2 and FM200 is done to suppress the fire with specific number of cylinder based on concentration and volume of the space...etc as per NFPA 12, and the para shown earlier it states that if the authority having jurisdiction determines the necessity to maintain a reserve cylinder/ supply...etc my Q what are the factors which determine the necessity of having the reserve or whether the system should have a reserve or not? since our consultant is defining him self as Authority Having Jurisdiction, and he ask to provide a reserve cylinder but he is not clarifying why we should have reserve or not....since it will be an extra cost without a valid point of view, because our project is at the middle of the city and only the fire watch will access or deal with the CO2 System monitor.
please support Eng Belal K. AlrwadiehMSc Design Of Steel StructureBSc Mechanical Engineering Address: KSA-RiyadhAl-Yarmouk, Abu Ja'afr AlmansourJordan-AmmamTabrbour-Alkhazna NeighborhoodAlkhaldeen St-Bldg 32h email Address:[email protected] Mobile Number:KSA-+966-549-326055Jordan: +962-776-498924 +962-795-630998 On Wednesday, May 27, 2015 8:56 PM, Brad Casterline <[email protected]> wrote: Hello, Off the top of my head, if it were a wet system there would be a minimum water supply duration, like .5 hour, 1 hour, 2 hour, etc. If the water supply was from a water storage tank the tank would have to meet the demand times the duration, AND be re-filled with-in 8 hours. Is this the type of thing you are questioning Eng Belal? Usually with co2 or fm200 it is one quick shot at extinguishment so the worry is "what if it flares back up but you are out of gas?". It is why you sometimes see these system (to act quickly) + a water system too in the same area. thanks, Brad -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Engr. belal alrwadieh Sent: Wednesday, May 27, 2015 6:16 AM To: Sprinklerforum Subject: co2, fm200 Gentlemen,as per NFPA 12, 4.6.1.2 Where the authority having jurisdiction determinesthat continuous protection is required, the quantity of reservesupply shall be as many multiples of the quantities required in4.6.1 and 4.6.1.1 as the authority having jurisdiction considersnecessary. what are the factor which determines that the continuity as must, since AHJ sometime they have some unprofessional reason to affect the contractor?is there another statement or code determine this? knowing that my current project is at the middle of the city with less than 20km from the CO2, FM200 cylinder supplier. Eng Belal K. AlrwadiehMSc Design Of Steel StructureBSc Mechanical Engineering Address: KSA-RiyadhAl-Yarmouk, Abu Ja'afr AlmansourJordan-AmmamTabrbour-Alkhazna NeighborhoodAlkhaldeen St-Bldg 32h email Address:[email protected] Mobile Number:KSA-+966-549-326055Jordan: +962-776-498924 +962-795-630998 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
