The Navy up here does the same, routing all alarms from all the various installations through a central station. This includes a couple of locations as far afield as Pacific Beach and a radio relay center up around Leavenworth.
On 1/25/08, Ed Vining <[EMAIL PROTECTED]> wrote: > 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) > -- 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)
