Same as Tim. I had pump rooms in underground bunkers but well maintained from flooding of water. I’m not an OSHA expert, but would that be considered a concealed space where concealed space entry requirements have to be met?
Also, 2nd paragraph of A.4.17 (2013 edition) for watertight: A.4.17 Pipe breakage caused by movement can be greatly lessened and, in many cases, prevented by increasing flexibility between major parts of the piping. One part of the piping should never be held rigidly and another free to move without provisions for relieving the strain. Flexibility can be provided by the use of flexible couplings at critical points and by allowing clearances at walls and floors. Fire pump suction and discharge pipes should be treated the same as sprinkler risers for whatever portion is within a building. (See NFPA 13.) Holes through pump room fire walls should be packed with mineral wool or other suitable material held in place by pipe collars on each side of the wall. Pipes passing through foundation walls or pit walls into the ground should have clearance from these walls, but holes should be watertight. Space around pipes passing through pump room walls or pump house floors can be filled with asphalt mastic. The movement being addressed in Section 4.18 is settling of the system and possible vibration during the operation of the fire pump. The section does not address anticipated earthquake forces. Tom > On Feb 23, 2016, at 2:38 PM, Tim Stone <[email protected]> wrote: > > Travis, > NFPA 20, 4.12.1 Equipment protection > Also 4.12.1.1.3 preplanned with fire department. > > Regards, > G. Tim Stone > > G. Tim Stone Consulting, LLC > NICET Level III Engineering Technician > Fire Protection Sprinkler Design > and Consulting Services > > 117 Old Stage Rd. - Essex Jct., VT. 05452 > CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 > [email protected] > > -----Original Message----- > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Travis Mack, SET > Sent: Tuesday, February 23, 2016 3:31 PM > To: [email protected] > Subject: Fire pump in pit > > Is there anything in NFPA 20 that would prohibit a fire pump from being > located in a pit? We have a project with 2 pumps. This is an existing > facility. These pumps are in two separate pits. One is diesel, one is > electric. Currently, both of the pits are about half full of water as the > sump pumps failed in both. We are trying to convince the owner to get these > pumps above grade. It seems stupid to protect a $$million+ data center with > a system, then rely on a $20 sump pump to keep the pits dry. There is a big > retrofit at this site. Tried to do a site flow test, downstream of pumps, > today and found this issue. > > So, just hoping to be able to find code/standard section that would prohibit > this. Owner's first thought is to just make band-aid repairs. > But, we are all concerned that this will happen again and leave the data > center at risk. > > -- > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] > > http://www.mfpdesign.com > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > Send large files to us via: https://www.hightail.com/u/MFPDesign > > _______________________________________________ > 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
