MEDICAL SURGICAL VACUUM EXHAUST MATERIAL

  • Tuesday, December 06, 2022 6:57 AM
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    Message # 13015253
    Al Moon (Administrator)

    NFPA 99 CODE EDITION 2021 SECTION # 5.1.3.7.1.1


    CONCERING THE MEDICAL VACUUM EXHAUST MATERIALS & DEVICES PART (6)


    IN MY OPINION ONLY AND AS I READ IT.


    THIS MATERIALS FOR THE MOST PART IS TO BE COOPER TUBING

    OR STAINLESS-STEEL PER # 5.1.10.2:


    BUT IF THE MANUFACTURER PERMIT'S OTHER MATERIALS THEY CAN BE USED.

    ( i.e. BLACK STEEL, BRASS OR GALVANIZED )

    WHEN ITS RECOMMENDED OR DETRMINED BY THE MANUFACTURER.


    MY QUESTION IS.


    HAS ANYONE SEEN OR HAVE IN WRITTEN TEXT FROM THE O&M / INSTALLATION MANUAL - FROM ANY OF THE MAJOR MANUFACTURER - PACKAGERS OF OUR MEDICAL SURGICAL VACUUM SYSTEMS. 


    A STATEMENT OR RECOMMENED LISTING THE APPROVED EXHAUST MATERIALS & DEVICES?


    AHIP

    AMICO

    BEACON MEDAES

    BECKER

    BUSCH

    EMSE

    OHIO 

    PATTONS

    QUINCY






    Last modified: Thursday, December 22, 2022 7:03 AM | Al Moon (Administrator)
  • Wednesday, December 07, 2022 7:48 AM
    Quote
    Reply # 13016728 on 13015253
    Robert Kroening

    I have not seen such a statement or letter.

    From my conversations with manufacturers, they would not inject themselves into that conversation.
  • Wednesday, December 21, 2022 11:26 AM
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    Reply # 13032303 on 13015253
    Carsten Lunde

    We are about to find out.

    I am on a planning committee for a new addition to a medical center out here and that very topic was raised for the medical air supply system which is modular. The project team has sent a request to one of the companies on the list for a formal letter stating the acceptable materials the installer may use for the interconnection of the compressors, etc. on the source side of the source valve.

    We do not expect a response until after the holiday and I will forward on what is shared with our team I assume next month.
  • Thursday, December 22, 2022 6:30 PM
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    Reply # 13033731 on 13015253
    Dane Robertson

    Al,


    I very much agree with you that the Dental Vacuum manufactures need to start being more clear on what is acceptable for the exhaust pipe material. The Mechanical Engineer's are confused because it is not clear by NFPA 99 2021 or the manufacturer.


    One manufacture we have been using uses regenerative blower pumps and they state PVC Sch 40 for their 5 HP (or smaller) and "Metal" Pipe for their 15 HP pumps.


    In my experience, 10HP regenerative pumps will eventually cause Sch 40 PVC to fail over time but 5 HP regenerative pumps will work just fine with Sch 40 PVC if the exhaust pipe is appropriately sized. We shouldn't have to figure this out by experience!


    Dane
  • Monday, December 26, 2022 11:46 AM
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    Reply # 13035536 on 13015253
    Mathis Carlson (Administrator)

    Al,
    We talked about this at length on the MGPHO Round-table call on the 16th. The consensus (if I can call it that ) was as follows:
    5.1.3.1.1.1  is talking about the Central Supply Systems- (I.E. Source equipment)


    Sub Paragraph 6 is talking about piping between the Vacuum Exhaust and the medical vacuum source (i.e. Between the exhaust connection point and the vacuum producer)


    So the consensus was that whatever is on that engineered skid from the manufacture is on the manufacture to determine what is "appropriate"


    Once the equipment is on site and our 6010 installer makes the connection all requirements of 5.1.3.7.7 Medical-Surgical Vacuum Exhaust apply (Materials listed in 5.1.10.2 and 5.1.10.3)


    But then of course you have the whole shall be Vs shall be permitted to be conversation that opens up....

    Sounds like a great thing to look at under the "Next edition of NFPA 99" conversation for some better clarification!
  • Monday, December 26, 2022 3:20 PM
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    Reply # 13035790 on 13015253
    Deleted user

    Hello Al

    The way in which I have always understood what is established in paragraph 5.1.3.7.1.1(5) is that it is allowed to use materials described in 5.1.10.2 and additionally brass, black or galvanized steel can be used, but limited to the lines of interconnection within the source system, upstream of the source valve. Regarding the discharge pipe of the medical-surgical vacuum system to the outdoors, as described in 5.1.3.7.7.7, only the materials described in 5.1.10.2.

    This is how I have always interpreted these two paragraphs

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