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  1. #1
    Forum Member DeputyChiefGonzo's Avatar
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    Default scba degradation...

    Click this link....
    www.publicsafetyedu.com/index.htm

    and go to special report: SCBA degradation.

    Click on the link to see the presentation....
    ‎"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
    Lt. Ray McCormack, FDNY


  2. #2
    Forum Member PaladinKnight's Avatar
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    A very good message sir.

    Thank you for bringing this to our attention.
    HAVE PLAN.............WILL TRAVEL

  3. #3
    Forum Member Bushwhacker's Avatar
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    Wow, That was Pretty cool.
    Courage, Being Scared to Death and Saddling Up anyways.

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    I would expect the inside temperature to be hotter then they were reading. When the SCBA facepiece is attached to the mask and face it creates a closed environment that will heat up quicker than the way they were testing.

    Am I wrong in summarizing the film as "direct flame inpingement of over 600 degrees will cause facepeice failure in under a minute"? I'm not all that surprised, but the visuals do drive the point home very effectively.
    So you call this your free country
    Tell me why it costs so much to live
    -3dd

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    Quote Originally Posted by voyager9 View Post
    I would expect the inside temperature to be hotter then they were reading. When the SCBA facepiece is attached to the mask and face it creates a closed environment that will heat up quicker than the way they were testing.

    Am I wrong in summarizing the film as "direct flame inpingement of over 600 degrees will cause facepeice failure in under a minute"? I'm not all that surprised, but the visuals do drive the point home very effectively.
    Except the face piece is not closed, there is an airflow which is positive pressure. Air is a very good insulator. Although, remember, we cook our turkeys at 350

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    Forum Member Ambrose33's Avatar
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    Most us of us will not have our mask directly impinged by flame. But its a good video to show what will happen once the masks starts to fail. Kinda scary cause I've had a couple masks at my FD come back damaged from a fire.
    Stay safe!

  7. #7
    Forum Member DeputyChiefGonzo's Avatar
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    Quote Originally Posted by Ambrose33 View Post
    Most us of us will not have our mask directly impinged by flame. But its a good video to show what will happen once the masks starts to fail. Kinda scary cause I've had a couple masks at my FD come back damaged from a fire.
    Which is precisely the point of the demonstration... and why I posted it!
    ‎"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
    Lt. Ray McCormack, FDNY

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    Forum Member DeputyChiefGonzo's Avatar
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    Quote Originally Posted by ScareCrow57 View Post
    Except the face piece is not closed, there is an airflow which is positive pressure. Air is a very good insulator. Although, remember, we cook our turkeys at 350
    Wrong again. If air is such a good insulator, explain the spread of fire to exposures through radiation.
    ‎"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
    Lt. Ray McCormack, FDNY

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    With all due respect Capt.Gonzo, air IS a good insulator... radiation is the transfer of heat through air without heating the air in between. If it were water, the heat would be absorbed more rapidly because water isn't as good of an insulator as air.

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    Air is not a good insulator at all .. radiation will travel through a vacuum, like space, air and radiation have nothing to do with each other.

    If air was a good insulator we would not expect convection to work at all. Heat causes currents without any additional input from us, IE not needed to be fan forced, if it was an insulator would it not just keep the heat where it is? (it is not insulating a heat source if the currents are drawing heat upward away from the source causing the source's temp to decrease)

    Wanna know what is a good insulator is ... dairy products ... frigging hot cheese on a pizza takes for ever to cool down when your hungry. (i joke but it is true)

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    Fire spread through radiation is due to the heat passing through the air without heating said air (i.e. sunlight). If air weren't a good insulator of heat, one would expect the air to absorb the heat. The molecules in air are very far apart allowing heat to dissipate rapidly... think double pane windows.

    Convection is totally different. It's already heated air raising temperatures of conductive material as it moves by.

    This link may help: http://coolcosmos.ipac.caltech.edu/c.../transfer.html
    Last edited by Firetacoma1; 01-15-2010 at 07:17 PM. Reason: error

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    small spaces of trapped air are good insulators, large bodies of "air" are poor insulators.


    Air is a poor insulator if it lets heat easily pass through it. Do you want a blanket that just allows heat to easily pass through?

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    Regardless, air plays no part in radiant heating.

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    Quote Originally Posted by owenscott View Post
    Air is not a good insulator at all .. radiation will travel through a vacuum, like space, air and radiation have nothing to do with each other.

    If air was a good insulator we would not expect convection to work at all. Heat causes currents without any additional input from us, IE not needed to be fan forced, if it was an insulator would it not just keep the heat where it is? (it is not insulating a heat source if the currents are drawing heat upward away from the source causing the source's temp to decrease)

    Wanna know what is a good insulator is ... dairy products ... frigging hot cheese on a pizza takes for ever to cool down when your hungry. (i joke but it is true)
    Interesting. Heat transfer through an object occurs as the molecules hit each other and cause increased activity. In a vacuum there are no molecules. hence nothing to excite. Sound does not travel through a vacuum. I don't believe heat will either.

    But ask this. I have a 1 foot piece of cooper, a 1 foot piece of steel, and a foot piece of air. Which will conduct more heat?

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    Quote Originally Posted by ScareCrow57 View Post
    Interesting. Heat transfer through an object occurs as the molecules hit each other and cause increased activity. In a vacuum there are no molecules. hence nothing to excite. Sound does not travel through a vacuum. I don't believe heat will either.

    But ask this. I have a 1 foot piece of cooper, a 1 foot piece of steel, and a foot piece of air. Which will conduct more heat?
    Of course heat will travel through a vacuum. Infrared radiation from the sun reaches the earth all the time. Radiant heat transfers through the medium without heating the medium itself.

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    Quote Originally Posted by CaptainGonzo View Post
    Wrong again. If air is such a good insulator, explain the spread of fire to exposures through radiation.
    Don't feed the trolls!

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    Quote Originally Posted by ScareCrow57 View Post
    I don't believe heat will either.

    HAHAHAHAHAHAHAHHAHAHAHAHAHAHAH AHAHAHAHAHAHAHA remind us again of how smart you are

  18. #18
    Forum Member DeputyChiefGonzo's Avatar
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    Quote Originally Posted by ScareCrow57 View Post

    But ask this. I have a 1 foot piece of cooper, a 1 foot piece of steel, and a foot piece of air. Which will conduct more heat?
    Oooooh... Jeopardy in reverse!

    The answer is the substance of the rod up sacrecrow's backside and the space in between his two functioning brain cells.
    ‎"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
    Lt. Ray McCormack, FDNY

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    Gonz,one question. How you gonna get the copper or steel BY HIS HEAD(already occupying cavity)? T.C.

  20. #20
    Forum Member DeputyChiefGonzo's Avatar
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    Quote Originally Posted by Rescue101 View Post
    Gonz,one question. How you gonna get the copper or steel BY HIS HEAD(already occupying cavity)? T.C.
    Hurst tool with the spreaders or rams!
    ‎"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
    Lt. Ray McCormack, FDNY

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