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dependo
#1 Posted : Monday, May 16, 2011 9:26:51 AM(UTC)
dependo

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What size fireboy is everyone using for twin engine . Do I measure the cu. ft with or without the engines?
Wayne
1973 express FB 32ft
twin 318
"Southern Lady"Chattanooga
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jralbert
#2 Posted : Monday, May 16, 2011 10:22:46 AM(UTC)
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I think that by measuring the space without considering the engines, you'd give yourself a bit of extra fire-fighting capacity. A little overkill here wouldn't hurt.
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD
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jhemp3
#3 Posted : Tuesday, May 17, 2011 4:55:17 PM(UTC)
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Wayne, your question made me wonder what model fireboy I had. Didn't find my '87 issue but I did look on their installation site and noticed they said disregard engines, tanks or other items when figuring cubic footage of the engine room.
Jim
Jim Hemphill
Detour
'87 32' FBS, USCG Certification #1057921
Berthed MM 207 Tennessee River, Picwick State Park Marina
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dependo
#4 Posted : Wednesday, May 18, 2011 8:09:18 AM(UTC)
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Thanks, Jim. I have the old helon system & want to update. They sure are expensive. Right Jeff?
Wayne
1973 express FB 32ft
twin 318
"Southern Lady"Chattanooga
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fastjeff
#5 Posted : Wednesday, May 18, 2011 9:56:51 AM(UTC)
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Unobtainable is REALLY expensive!

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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Docsnow
#6 Posted : Wednesday, May 18, 2011 10:18:23 AM(UTC)
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I called FireBoy a few years ago about the same situation I was told if it weighs between 13lb / 13.5 lb it is still good & doesn’t need replacement. I use a digital scale that I recalibrated before using it to weigh mine it read between 13.14 & 13.15 lbs also if the helm green light is on that’s also a good indication. But to B on the safe side call & ask them have model # ready. Was also told that if I’d return the old one they’d apply a discount to the purchase price of a new one can’t recall how much it was.Anxious

Norm,

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pfhlaw
#7 Posted : Wednesday, May 18, 2011 6:21:37 PM(UTC)
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Here's the legal/engineering response:

Halon 1301 was eliminated because it's a CFC and, allegedly, it contributes to global warming.
But it is still legal for you to use because you are "grandfathered", which means
all existing non-commercial installations are OK, but all future manufacturing
must use the new and improved (but less effective) compounds. Think freon 12 vs freon 134a.

Halon 1301 is NOT toxic*. CO2 IS toxic.
It takes only 3%-7% concentrations of Halogen 1301 to suppress a fire. It takes LETHAL doses of 35% to 75% CO2 concentrations to suppress a fire.

If you throw out or discharge your old halon 1301 system and replace it with a CO2 system, you will not be "upgrading", you will be increasing the dangers to you and your crew, and disbursing the halon 1301 into the atmosphere needlessly and without actually extinguishing a fire. There are companies that will "process" your halon 1301 for a fee.

Jeff and Doug will now add their comments from the right and left political perspectives.


*NOTE Halogen 1301 causes mild giddiness at its effective concentrations. It is just a coincidence that Captain Docsnow "tests" his halon 1301 system on a daily basis using the smell test.

Peter
1981 32' sedan bridge
twin Chrysler 360 cu. in. 250 hp engines
Raw water cooled
Nimbus II
Home port: New Buffalo, MI
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dougrose
#8 Posted : Thursday, May 19, 2011 10:05:55 AM(UTC)
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OK, I'm game. But am I supposed to be right or left? When I say that the Constitution doesn't let the government spy on its citizens without a warrant, I am a left-wing dupe. When I say that the Constitution doesn't let the government restrict gun ownership, I am a right-wing nutjob. Can't win.

Nitrogen also puts out fires, but there is no smell or any other sign that the O2 is missing. That makes it dangerous for fire suppression. A bunch of guys died at the Cape some years ago when they went into the Shuttle Aft Skirt before the nitrogen dissipated.

CO2 at least is a breathing trigger, so you know there is something wrong.

Me, I solved this problem by not carrying gasoline.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
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jralbert
#9 Posted : Thursday, May 19, 2011 10:29:51 PM(UTC)
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Wing tip politix aside, here's myu two cents worth: weigh the current cylinder -- if it weighs what it is supposed to, then it should be effective to fight engine fires. Mine triggers, I think, at a certain temperature. (By the way, if your blower is running when the halon is released, that is not good -- it will suck out the halon and bring in fresh air to re-feed the flames.)
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD
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Barkleydave
#10 Posted : Friday, May 20, 2011 7:57:24 AM(UTC)
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My boat has the orginal Halon system and I weigh it each year. I am not going to replace it until it fails the weight test. It is stamped on the bottle.

I also have a type I Hand held Halon which is grandfathered and it actually has a gauge! I keep it in the galley area so if need it will not leave the DC mess!

I understad the CFC issue but a broad brush for all applications maybe be needed but certainly not justified.

I doubt the number of times a Halon system has been set off in any year in a boat would have NO measurable effect on global warming!

Before, we had CO2 below decks and I remember the bottle was huge and very expensive to have recharged.

Excellent point Joel regarding the blower being on.

dave

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fastjeff
#12 Posted : Friday, May 20, 2011 10:27:27 AM(UTC)
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From what I've seen and read on gas-powered boat explosions, the Halon system would be too late in action to prevent blast damage to boat and flesh. It will put the fire out, but a bit too late.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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jralbert
#11 Posted : Friday, May 20, 2011 10:37:43 AM(UTC)
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Originally Posted by: Barkleydave Go to Quoted Post


I doubt the number of times a Halon system has been set off in any year in a boat would have NO measurable effect on global warming!
Dave..I agree. The problem, however, is that the stuff, along with the old type of freon, leaks. In small amounts no doubt, but in many, many places. It's like money. As the late Senator Everett Dirksen (R-IL) said, a billion here, a billion there and pretty soon we are talking big bucks.
Happy boating
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD
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