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NFPA 99 2012 Edition Medical Vacuum / WAGD System

  • Friday, June 09, 2017 2:48 PM
    Message # 4890188
    Al Moon (Administrator)

    What is your position on the use of rotary oil vane technology as the vacuum pump producer for a combination Medical Vacuum and WAGD system?


     


     

    5.1.3.8.1.2  If WAGD is produced by the medical–surgical vacuum source, the following shall apply: 

    (1) 

    The medical–surgical vacuum source shall comply with 5.1.3.7.

    (2) 

    The total concentration of oxidizers (oxygen and nitrous oxide) shall be maintained below 23.6 percent, or the vacuum pump shall comply with 5.1.3.8.2.1.

    (3) 

    The medical–surgical vacuum source shall be sized to accommodate the additional volume.


     

    5.1.3.8.2  WAGD Producers.

    5.1.3.8.2.1  Vacuum pumps dedicated for WAGD service shall be as follows: 

    (1) 

    Compliant with 5.1.3.7.2

    (2) 

    Designed of materials and using lubricants and sealants that are inert in the presence of oxygen, nitrous oxide, and halogenated anesthetic

     

  • Sunday, June 18, 2017 11:39 AM
    Reply # 4906136 on 4890188

    My opinion is that while NFPA 99 doesn't explicitly prohibit using an oil rotary vane to produce WAGD, this technology will unlikely be compliant with this:

     

    (2) Designed of materials and using lubricants and sealants that are inert in the presence of oxygen, nitrous oxide, and halogenated anesthetic 

     

    So I typically suggest getting documentation from the manufacturer before using an oil rotary vane to produce WAGD (which I see far too often). 

     

     

    Last modified: Sunday, June 18, 2017 11:41 AM | Luke Miller
  • Monday, June 19, 2017 11:17 AM
    Reply # 4907580 on 4890188

     So what do you think about using a claw?

  • Tuesday, June 20, 2017 5:20 AM
    Reply # 4908801 on 4890188

    I think Claw is a good option.  My understanding of "oil-less" Claw technology is that no oxidizers interact with the pump's oiled components.  In my opinion, this would satisfy the requirement in #2 above.

     

    Note: I'm referring to a "dry" Claw here; I used the "oil-less" in quotations because that's how BeaconMedaes has it on the specification for their Claw.

     

    http://www.beaconmedaes.com/images/stories/pdf/4107%209501%2074.pdf 

    Last modified: Thursday, June 22, 2017 3:56 PM | Luke Miller

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