RE: Building Utility Tunnels

The tunnel is part of the building I would be worried about the “Building” code issues. Regards Jim Davidson From: Sprinklerforum On Behalf Of Reed A. Roisum, SET Sent: Wednesday, May 16, 2018 11:15 AM To: sprinklerforum@lists.firesprinkler.org

RE: [EXTERNAL] Misc. Gas Storage

Typically, propane tanks are stored in steel mesh cages not enclosed boxes. Same for the oxygen bottles. If these are in a flammable storage cabinet, then that’s another issue. NFPA 55, 6.10 provides design criteria guidance based on the type of gas. Overhead sprinklers are standard fare,

RE: Building Utility Tunnels

Knowing what is being routed through the tunnel is important. I’ve had them used for access to the underside of hydraulic equipment so there was hydraulic oils at high pressure, had them used for distribution of various chemicals along with electrical and other uses. From a fire protection

RE: Building Utility Tunnels

Not sure about everything in the tunnel, but I know there is some steam piping and domestic water piping. Reed A. Roisum, SET | Karges-Faulconbridge, Inc. | Senior Fire Protection Designer | Fargo, ND | direct: 701.552.9903 | mobile: 701.388.1352 |

RE: Building Utility Tunnels

I would agree with Craig, ladders and doors don't fit the 8.15.1.2.2.1 definitions of openings that don't disqualify something from being a concealed space. I always prefer a what does the book say answer, but in this case I'm going with it's what the book doesn't say. Mike Morey CFPS 3229

RE: Building Utility Tunnels

What is the tunnel for? When you say utility, what kinds of systems conveying materials are being run through the tunnels? Either way, a utility tunnel typically won’t meet the whole definition of 8.15.1.2.2. Since it is accessible, it is really no different than a utility room or other

Building Utility Tunnels

NFPA 13, 2013 ed, 8.15.1.2.2 says, “Concealed spaces of noncombustible and limited-combustible construction with limited access and not permitting occupancy or storage of combustibles shall not require sprinkler protection.” Would a utility tunnel that is under the footprint of the building

Misc. Gas Storage

So … working on an Medical Equipment Storage Facility. I’ve got rack storage of the medical equipment covered. But I also see a “propane fire safe” in the corner of the warehouse. As well as a “medical oxygen cage”. Owner says the following will be in the O2 cage: (40) ‘E’ Bottles and (20) ‘M’