IFC Section 5004.2.2.3 (and also similar language in NFPA #30) Secondary containment for indoor storage areas shall be designed to contain a spill from the largest vessel plus the design flow volume of fire protection water calculated to discharge from the fire-extinguishing system over the minimum required system design area or area of the room or area in which the storage is located, whichever is smaller. The containment capacity shall be designed to contain the flow for a period of 20 minutes.
The last one I saw used a deep vault with metal grating over it, at the far end of the storage room, in which the room had a very slight grade to the vault, so avoiding a materials handling curb/step problem. Andrew Steele From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Reed A. Roisum, SET via Sprinklerforum Sent: Thursday, April 09, 2020 1:27 PM To: sprinklerforum@lists.firesprinkler.org Cc: Reed A. Roisum, SET Subject: RE: Curbs for Containment Not sure if this is what you are thinking of, but below is from 2012 IBC Group H-2 Flammable and combustible liquids section... [F] 415.8.2.4 Leakage containment. A liquid-tight containment area compatible with the stored liquid shall be provided. The method of spill control, drainage control and secondary containment shall be in accordance with the International Fire Code. Exception: Rooms where only double-wall storage tanks conforming to Section 415.8.2.3 are used to store Class I, II and IIIA flammable and combustible liquids shall not be required to have a leakage containment area. *(Commentary) In order to prevent the spread of flammable and combustible liquids to adjacent nonstorage areas in the event of a leak in a storage tank, an adequately sized containment area is required. The sizing of the containment area should be designed to contain a spill from the largest vessel plus the fire protection water for the required duration. It is also important that the drainage system be sufficient to drain not only the flammable or combustible liquid but also the drainage water from the sprinkler system as well as hose streams. Since the outer wall of a double-walled storage tank acts as the secondary means of containment, the exception would allow the omission of the leakage containment area for all flammable and combustible liquids. Reed A. Roisum, SET | KFI Engineers | Senior Fire Protection Designer | Fargo, ND | direct: 701.552.9903 | mobile: 701.388.1352 | KFIengineers.com<http://www.kfiengineers.com> From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of James Crawford via Sprinklerforum Sent: Thursday, April 9, 2020 12:06 PM To: sprinklerforum@lists.firesprinkler.org Cc: James Crawford <jcrawf...@phaserfire.ca> Subject: Curbs for Containment Hoping someone's brain is working better than mine. I cannot seem to find the information on sizing a curb for containment of flammable liquids and sprinkler water, I seem to remember a time frame for the sprinkler water plus the largest container, but am having no luck locating is Any help Thank You James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Cel: 604-790-0938 Email jcrawf...@phaserfire.ca<mailto:jcrawf...@phaserfire.ca> Web: www.phaserfire.ca<http://www.phaserfire.ca> ______________________________________________________________________ This email originated from an external source and has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________
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