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
