Ed, On the same topic Verizon does the same thing for its central offices through the National Operations Center or NOC. All security and fire system transmissions are routed to network operations and then retransmitted accordingly.
John Drucker -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ed Vining Sent: Friday, January 25, 2008 9:18 PM To: [email protected] Subject: Re: Fire sprinkler question Thanks Ron. More grist for the mill. As you might guess, this is for NPS. Denali National Park this time. Friday afternoon is not a good time to ask questions, so I will sit on it for a while. We are toying with the idea of having the Dispatch Center at The Presidio handle alarm system monitoring for many of the parks. I am trying to schedule a visit to a half dozen parks to see what we might expect in the way of response, and a rough idea of how much we can save. The big plus would be having NPS folks handling alarms, instead of a bunch of jack leg alarm companies. Ed Ron Greenman <[EMAIL PROTECTED]> wrote: Ed, Moire examples of long lived systems that I have seen the interiors of that show no signs of corrosion: Buildings at the Naval Undersea Warfare Center at Keyport, WA built in 1942. The former stables for the Seattle horse drawn street car system--early Twentieth Century. A system that was converted to dry of which I have the faceplate-General Fire Company 1917. There is a system in Tacoma still in service dated 1898. Finally a 1916 Viking Tyden dry system like new. There are many more. In fact although I've seen corrosion in old pipes I've never encountered MIC in old steel. On 1/25/08, Ed Vining wrote: > I agree Tom. Here is what I plan to respond unless I hear words of wisdom from you guys. > > > One must accept the fact that there are variables which affect the life of a sprinkler system. They include: > > Proper original design and installation > Proper inspection and testing > Whether they are wet, dry, preaction or antifreeze > Environmental conditions, like salt air, high humidity, corrosive atmosphere. > Presence of microbiologically induced corrosion (MIC) > Type of pipe, Schedule 40, thinner wall pipe, galvanized pipe, plastic pipe > Corrosive nature of the water > Earthquake > > A new or existing wet pipe system which has been tested free of the conditions leading to MIC, and is properly maintained, can pretty much be expected to last for the life of the building. Examples of this are the sprinkler systems at The Presidio and Fort Mason in San Francisco. I know the system at the Headquarters Building at Upper Fort Mason is in the neighborhood of 70 years old. I took apart portions of another 70 year-old sprinkler system in San Francisco, during a building demolition. The exterior and interior of the pipe was like brand new. > > Dry pipe systems do not have such a good history, mostly because of internal corrosion. I know of no statistics, but would expect at 30 to 40 years. > > Antifreeze systems will not get proper maintenance, so it is anybody's guess. > > Other fire extinguishing systems will likely have shorter lives, partly due to obsolescence. > > Tom Duross wrote: > That's kinda like asking how long is a piece of string Ed. > > Tom > Go Pats > > eBay > > > At 06:39 PM 1/25/2008, you wrote: > > >Here is a question I was asked today: > > "Where can I find a list that indicates the Estimated Design life > > for a fire > >suppression/sprinkler system? > > > > What say ye? > > > > > >Ed Vining > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > > > Ed Vining > 4819 John Muir Rd > Martinez CA 94553 > 925-228-8792 > [EMAIL PROTECTED] > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > -- Ron Greenman at home.... _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) Ed Vining 4819 John Muir Rd Martinez CA 94553 925-228-8792 [EMAIL PROTECTED] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
