Thread: Class A pumper

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    Default Class A pumper

    I am looking for the sourse that defines what a Class A pumper is. I'm writing a paper and I need to site the source. If someone knows the Organization, document, section and paragraph could you please share that information. Thank you for your support and have a great day.

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    Nfpa 1901.
    "Nemo Plus Voluptatis Quam Nos Habant"

    The Code is more what you'd call "guidelines" than actual rules.

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    Quote Originally Posted by DeputyMarshal View Post
    Nfpa 1901.
    Can you tell me where in NFPA 1901, I can't seem to find it.

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    Default 1901

    www.NFPA.Org and in the search box type in 1901. Make sure you have adobe reader to get the pdf format. But you should be able to find it there.

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    Default Where in 1901

    I have looked at 1901. Chapter 5 discusses Pumpers but makes no mention of Class A at all. The defintions only refer to Class A fires and Class A foam, there is no mention of Class A pumper anywhere.

    I am getting there using
    http://www.nfpa.org/freecodes/free_access_document.asp
    We have the printed docs at the fire house. Sure wish we had them on CD

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    Thumbs up Check This Out.........

    The "Class A" is an ISO designation, as far as I know. Try www.ISO.com for more info.
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    Class A Pumper:

    Will meet or exceed its rated capacity at 150 psi, 70% of its rated capacity at 200 psi and 50% of its rated capacity at 250 psi.

    NFPA 1901 I thought...no time to look now.

    Should also be a placard displayed on your pump panel.

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    NFPA 1901 (2003 ed.) says nothing about a Class A designation. It does list the minimum pump, tank, hose, and equipment to be an NFPA rated pumper. But searching the code with the term "class A" only brings results referimg to foam.

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    Quote Originally Posted by johnfd86 View Post
    Class A Pumper:

    Will meet or exceed its rated capacity at 150 psi, 70% of its rated capacity at 200 psi and 50% of its rated capacity at 250 psi.

    NFPA 1901 I thought...no time to look now.

    Should also be a placard displayed on your pump panel.
    NFPA 1901 refers to the above specs several times in chapter 16, NFPA 1911: Service Test of Fire Pump Systems on Fire Apparatus will tell you the same specs for a Class A pumper

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    Quote Originally Posted by johnfd86 View Post
    NFPA 1901 refers to the above specs several times in chapter 16, NFPA 1911: Service Test of Fire Pump Systems on Fire Apparatus will tell you the same specs for a Class A pumper
    I checked both places. Neither specifically refers to Class A pumper. Both talk about requirements and that a pump shall have a minimum gpm of 250. As stated earlier I am beginning to believe the term Class A pumper is an ISO thing. We need more standards to live by.

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    It took some digging around. I finally found the iso site with the info. For anyone else with an interest here it is. Now all I have to so is find the roght document.
    http://www.isomitigation.com/ppc/0000/ppc0001.html

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    Unhappy Somebody please help me!!!!

    Seems I'm looking at the ISO site, again, no mention of the term Class A pumper. Surely some of the old crusties or the new acadamy grads can point me to the source of the defintion of a class A pumper. Where did it come from?

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    I believe that "Class A" pumper is a term that has more or less gone by the wayside.

    It's been more than a decade since I've been to pump school, but it seems like the National Board of Fire Underwriters (precursor to ISO) came up with that designation originally, although it might have been the NFPA back when 1901 was "Pamphlet 19" or some such. It seems like the military may have been using something other than Class A standards, thus the differentiation.

    I know I haven't really given you an answer, but maybe there's a clue in there that can help you find one.
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    I may be wrong, but I believe the IFSTA Essentials Manual lists the requirements for a "class-A pumper"...At least it did when I went through the academy. Of course, the IFSTA Essentials book was chiseled onto stone tablets back then, too.




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    I've read about class A pumpers in IFSTA manuals, but what Im curious to find out about is Class B and C pumpers....if there is such a thing. After all, if there was a class A, there had to be at least one other class otherwise there'd have been no reason whatsoever for the designation because there's nothing to distinguish them from.

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    Class "A" pump is an OLD ISO designation.Had to be 500gpm or more and meet testing requirements as outlined by John.The designation dates back in excess of 35 years.A "B" pump was capable of moving water up to 500 gpm but could not pass the rating test.IE a fuel oil pump.And yes,there were small communities that had such apparatus as working pieces.We had one in the North end in the late 50's early 60's.You may want to reference NFPA 19 as my Fire Protection handbook #13 1969 makes reference to this section in regard to motorized fire apparatus. T.C.
    Last edited by Rescue101; 03-13-2007 at 09:59 AM.

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    A class A pumper is nothing more than a pumper that meets the following pumping requirements. 100% pump capacity at 150psi, 70% capacity at 200psi, and 50% at 250 psi. Class B pumps were found on older apparatus and are no longer manufactured. They flowed 100% pump capacity at 120psi, 70% at 200psi, and 50% at 250 psi.

    FyredUp

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    Looks to me like there is no longer any such animal. We simply have intial attack trucks, pumpers, tankers, aerials, brush, rescue, HAZMAT, and foam trucks.

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    HotTrotter...

    In essensce Class A pumpers are ALL that exist today. All pumpers have pumps ratred at 100% capacity at 150psi. The reason the name is rarely seen is it is redundant when you quote NFPA 1901 as your standard.

    FyredUp

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    The best I remember --- class B pumpers were rated at 120 PSI as opposed to 150. such as 500 GPM @ 120

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