I can't be of any help whatsoever John-- Kansas doesn't have a lot of this-- and I know I'm skating on thin ice here, with 2 strikes already this week, but it's Friday on The Forum so I'm going to throw caution to the wind and admit I love Scot's posts, and go to YouTube and download me some Joe Cocker.
b On Feb 24, 2017 12:50 PM, "John Irwin" <[email protected]> wrote: > I can’t be of much help. I have no firsthand experience other than the > fact that I see the stuff installed all over the place on floating docks in > the Tampa area. > > > > *John Irwin - CET* > > *Division Manager – Fire Sprinklers* > > *Critical System Solutions, LLC* > > > *Licence Number: FPC16-000053*Cell: 813.618.2781 <(813)%20618-2781> > > Email: [email protected] > > > > [image: certifiedmark300 - small] > > > > *From:* Sprinklerforum [mailto:[email protected]. > org] *On Behalf Of *å... .... > *Sent:* Friday, February 24, 2017 1:39 PM > *To:* [email protected] > *Subject:* Floating Dock > > > > > > > > > > 1. I don't remember mentioning melted lead-ins to wharf systems, but my > neighbor claims that my brain is insane. That is a possibility. The > hazard too, but what is more, if a fire occurs at the wharf-to-shore > tie-in, could not one apply suppression from the landside wagon? > > > > 2. I know the committee is about listings and the right to print money > that goes along with that. That process has my respect, as do the people > with the funding, integrity and fortitude to go through such verification > operations. But HDPE seems like it has some long legs. Plastic, its the > flexibility, if only for a few million cycles of that type of loading. > It's also that corrosion thing. > > Maybe John Irwin might share with us -- > > a. what has been the age of the longest plastic pipe system or either > in-service or de-commissioned? > > b. what is the best guess as to mean time between failures? > > c. Maybe Charles Thurston will pull some of that fallen pipe out of > the muck, inspect it and make an estimate on its projected service life. > Please share that experience with us. > > > > > > 3. Corrosion > > There is a reason that the UFC 3-600-01 banned galvanized piping. It > has low reliability relative to its cost. > > Almost anyone making claims against entropy (corrosion) has my > suspicion. > > While preparation work and custom application is important, it is > years-in-service with low down time, which is *THE* metric. > > And in the ends, death (by corrosion) and taxes usually wins. > > > > Pipe deep under the salt-water line usually fairs better than pipe > above; It's the oxygen. > > The North Sea can be a harsh mistress. Norsk company Trelleborg > responded with Elastopipe™ . > > For those that live by the listing, Elastopipe has certs from Lloyds, > ABS, USCG and some Russian test agency. > > > > Another pipe type that sounds highly exotic but works like a charm is: > titanium. > > Titanium pipe costs at least 10-by that of zinc, in a deflationary > market, but its demand is such that you get your investment back when you > "haul it out of the muck" > > Resell it for salvage and make out a net-sum winner. Perfect > offshore application, but onshore, for sure, it will be stolen. > > > > My bet is on HDPE. Some HDPE has been sitting outside for years, at > contractor's storage yards in deserts, and then goes into service. > > Some of that pipe has been without the claimed 'radiatively > protecting' soot pigmentation. > > > > > > 4. Wharf design. Clients that are looking for that HPR, might want to > consider whether the wharf itself is an unacceptable exposure. > > Depending upon the vessels that are moored, it may be worthwhile > projecting suppressant underneath the wharf. While a low probability > > fire, a leaking fuel oil tanker could lay a long fire exposure onto the > wharf. But I sense the likelihood of that fire is so low that it is > > acceptable to not protect for it, for all except perhaps the FLNG, FPSO > type platforms, which often don't moor to shore -- but rather > > tether to their floating dolphins. > > > > 6. (see, my neighbor was right) When crafting Code, we can't think of > every application that the future will bring. Try leaving the designers > mind's open to the > > wisdom and intuition behind the written framing. I have seen too many > designers spending weeks trying to fit a linear requirement for listed > equipment around an application whose corners could have been squared fast > and neatly if only there had been more emphasis on effectiveness. > > > > Scot Deal > > Excelsior Fire & Risk Engineering gsm: +420 608 318 498 > <+420%20608%20318%20498> > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > >
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