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Burning green/wet firewood Ook 10-29-2006
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Posted by Don Phillipson on October 29, 2006, 4:40 pm



> I did nearly 30 years ago. The little box stove was very hot. Then
> I started hearing the airflow. It got loud and I cut the air intake
> totally although I wasn't totally sure that I was having a chimney fire.
> After a few minutes it stopped. I didn't call the Fire Dept but
> probably should have. [Neighbors told me flames were shooting up 30
> feet and airplanes were avoiding the area. :-)]

Modern building codes for woodstove steel chimneys
require that they withstand temperatures of 2000 Fahr.
Normal burning is in the range 200-500 and creosote
fires in chimneys commonly exceed 1000 Fahr. If you
are sure your chimney is OK, some firemen recommend
a chimney fire as the fastest way to clean it. The sound
is terrifying but seldom lasts more than 10 minutes. The
main danger is more probably sparks on the roof than
overheating interior structures -- but only if you are sure
your chimney is in good condition, double-walled, etc.

We had two such fires in 12 years and this is what
the firemen told us. They did not mind being called out
although both times they arrived long after the chimney
fire had exhausted itself.
--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)



Posted by Charles Schuler on October 29, 2006, 5:24 pm



>
>> I did nearly 30 years ago. The little box stove was very hot. Then
>> I started hearing the airflow. It got loud and I cut the air intake
>> totally although I wasn't totally sure that I was having a chimney fire.
>> After a few minutes it stopped. I didn't call the Fire Dept but
>> probably should have. [Neighbors told me flames were shooting up 30
>> feet and airplanes were avoiding the area. :-)]
>
> Modern building codes for woodstove steel chimneys
> require that they withstand temperatures of 2000 Fahr.
> Normal burning is in the range 200-500 and creosote
> fires in chimneys commonly exceed 1000 Fahr. If you
> are sure your chimney is OK, some firemen recommend
> a chimney fire as the fastest way to clean it. The sound
> is terrifying but seldom lasts more than 10 minutes. The
> main danger is more probably sparks on the roof than
> overheating interior structures -- but only if you are sure
> your chimney is in good condition, double-walled, etc.


Some firemen recommend a chimney fire to clean it? I don't think that's a
good idea.



Posted by Goedjn on October 30, 2006, 10:56 am


On Sun, 29 Oct 2006 16:40:17 -0500, "Don Phillipson"

>
>> I did nearly 30 years ago. The little box stove was very hot. Then
>> I started hearing the airflow. It got loud and I cut the air intake
>> totally although I wasn't totally sure that I was having a chimney fire.
>> After a few minutes it stopped. I didn't call the Fire Dept but
>> probably should have. [Neighbors told me flames were shooting up 30
>> feet and airplanes were avoiding the area. :-)]
>
>Modern building codes for woodstove steel chimneys
>require that they withstand temperatures of 2000 Fahr.
>Normal burning is in the range 200-500 and creosote
>fires in chimneys commonly exceed 1000 Fahr. If you
>are sure your chimney is OK, some firemen recommend
>a chimney fire as the fastest way to clean it. The sound
>is terrifying but seldom lasts more than 10 minutes. The
>main danger is more probably sparks on the roof than
>overheating interior structures -- but only if you are sure
>your chimney is in good condition, double-walled, etc.
>
>We had two such fires in 12 years and this is what
>the firemen told us. They did not mind being called out
>although both times they arrived long after the chimney
>fire had exhausted itself.

If you *DO* have a chimney fire, you shouldn't
burn in that stove/fireplace again until
someone inspects the chimney.

And no, you shouldn't ever start a chimney
fire on purpose.



Posted by Ook on October 31, 2006, 7:30 pm


>
> And no, you shouldn't ever start a chimney
> fire on purpose.
>
>

How would you start one? Not that I want to know how to start one, but
rather how to avoid starting one. When I startup my stove, there are some
good flames entering the chimney from the stove until I get the fire going
and close the air intakes down.



Posted by Charles Schuler on October 31, 2006, 7:37 pm



"Ook" <Ook Don't send me any freakin' spam at zootal dot com delete the
Don't send me any freakin' spam> wrote in message
> >
>> And no, you shouldn't ever start a chimney
>> fire on purpose.
>>
>>
>
> How would you start one? Not that I want to know how to start one, but
> rather how to avoid starting one. When I startup my stove, there are some
> good flames entering the chimney from the stove until I get the fire going
> and close the air intakes down.

You can start a chimney fire, if there is a coating of creosote to support
it. If you want to find out, load your stove with hot burning stuff and
give it all the air that you can (not recommended).

It is an urban myth ... start a chimney fire once a year as a self-cleaning
method. Not recommended!

Chimney fires can start secondary fires and damage chimneys.



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