Emergency Shutoff Valves for NFPA 99 2015 Edition

  • Wednesday, January 18, 2017 6:56 AM
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    Message # 4554308
    Al Moon (Administrator)

    Does the code requirement for Section # 5.3.4 Emergency Shutoff Valves for 2015 NFPA 99. Now required all Categories 3, to be valved per a Category 1 ?
  • Wednesday, January 18, 2017 4:06 PM
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    Reply # 4555587 on 4554308
    Robert Kroening

    Yes, like many other NFPA 99 sections, this points back to Category 2, and then Category 1 facility valve requirements.

    So Category 3 facilities will need to have the same valves as Cat. 1 and 2, with the exceptions listed.
  • Thursday, January 19, 2017 5:39 AM
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    Reply # 4556524 on 4554308
    Mark Allen

    Careful!  Remember that this applies ONLY to the patient gases (Oxygen and nitrous)  It does NOT apply to any "dental" gases or to vacuum.  
  • Thursday, January 19, 2017 9:56 AM
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    Reply # 4557001 on 4554308
    Don Holden

     Keep in mind that's only if it's remote. 
  • Friday, January 20, 2017 5:42 AM
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    Reply # 4558664 on 4554308
    Mark Allen

    Right on, Don.   Whatever "remote" means...;-)
  • Friday, January 20, 2017 8:08 AM
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    Reply # 4558792 on 4554308
    Corky Bishop

    They are not called zone valves in category 3 because they are not the same thing.  A dental manifold that is not remote does not require any valves, not even a source valve.

     

    Look at figure A.5.3.12 Examples of Storage/Supply Enclosures in the 2012 edition. 
  • Friday, January 20, 2017 10:38 AM
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    Reply # 4559144 on 4554308
    Don Holden
     If it is not remote then you need to turn the tanks off every night. 

     Remote is considered where you must go out side the building into the exposed elements to get to the tanks. ( you cannot access it without putting on your galoshes )( or snowsuit at this time of year )

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