PC 3 labs are 'totally clean' and have sealed walls/floors/ceilings. Could make drainage a problem - you might have to consider floor drains with covers which would have to be removed after actuation. Of course, this is a good example of an application for a high pressure (>200 bar) mist system using cylinders an ultra clean water.
Stewart On 15 Apr 2011, at 14:26, George Church wrote: > Just as a crazy idea, for a little self-contained box where you have a > problem with contaminated water runoff, could you limit the amount by using a > 13D tanka nd puimp so you have x gallons to discharge, hopefully knock it > down, and get everyone out, then the water in the tank runs out and that's > the end of it. Small pressure tank would give more robustness, compliance > with 13/22, or a simpler well tank would be cost effective, not need > electric, and be more reliable than a 13d pump. > > Concept I'm pushing is to limit amount of water. Floor drains might be piped > to a poly holding tank? > > George Church > Rowe Sprinkler Systems, Inc. > PO Box 407, Middleburg, PA 17842 > 877-324-ROWE 570-837-6335 fax > [email protected] > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Friday, April 15, 2011 8:42 AM > To: [email protected] > Subject: RE: PC- 3 Laboratories > > PC means Physical Containment, the 3 is the designation on a scale of 1-4. A > Level 3 lab is typically for biological research/testing. Think of stuff > like Ebola or other "bad bugs", stuff you don't want to escape into the > atmosphere. These labs are under negative pressure and have air locks for > entering and leaving. Stringent decontamination requirements are also in > place. > > Sprinklers will pose a problem in that anything leaving the lab has to be > decontaminated. There would have to be floor drains in the lab to capture > the sprinkler discharge and route it to a containment area where is can be > decontaminated. It can get complicated since the effluent must be fully > contained to prevent it's escape into the atmosphere prior to > decontamination. Standard floor drains can't be used due to the negative > pressure issue so they create an added expense beyond normal floor drains. > > So the Client who says no sprinklers may be on the right track. Another > means of protection may be more suitable and water may not be compatible with > the materials being tested in the lab. You need a chemicals inventory list > and the lab's procedures for handling and storage. Depending on where this > lab is being built portable fire extinguishers maybe all that's needed. This > maybe a case where fire prevention procedures have to take the lead due to > safety and environmental issues instead of going the standard route of > sprinklering the lab. > > You need to do some serious homework before just throwing sprinklers in the > place. > > Craig L. Prahl, CET > Fire Protection > CH2MHILL > Lockwood Greene > 1500 International Drive > Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > CH2MHILL Extension 74102 > [email protected] > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Chris Mak > Sent: Thursday, April 14, 2011 7:09 PM > To: [email protected] > Subject: PC- 3 Laboratories > > I have a client who is being challenged by his client as not to put > sprinklers into a PC-3 (Physical Containment Level 3) laboratory. > > I am uncertain about the designation - the laboratory is being built and > certified in Europe before being shipped here to be installed within a > building here on the other side of the globe. Hence, PC-3 may be a European > designation and not an American designation. > > Apparently, the laboratory will be occupied by three people - i.e. it's not a > small cupboard or fume hood sized. > > Any experiences in protecting, or not protecting such laboratories? > > > Thanks > > > > Chris Mak | Aon New Zealand > Sprinkler Certification Manager > Level 1, 4 Fred Thomas Drive,;PO Box33-1240 Takapuna > t: +6494869761 | f: +6494860112 | m: +64274344058 > e: [email protected] > > Please consider the environment before printing this email. > > > > > > > This communication (and any attachments) is directed in confidence to the > addressee(s) listed above, and may not otherwise be distributed, copied or > used. The contents of this communication may also be subject to privilege, > and all rights to that privilege are expressly claimed and not waived. 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We do not accept liability in connection with computer virus, data > corruption, delay, interruption, unauthorised access or unauthorised > amendment. > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
