Results 1 to 10 of 10
  1. #1
    Robert Metheney's Avatar
    Robert Metheney Guest

    Default Corragated steel tubing-the fix

    Hi guys I run into csst on at least every other inspection and I am frequently asked for the fix for this problem. Is there a repair that is short of replacing with hard pipe?

    Similar Threads:
    Inspection Referral SOC

  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,245

    Default Re: Corragated steel tubing-the fix

    Quote Originally Posted by Robert Metheney View Post
    Hi guys I run into csst on at least every other inspection and I am frequently asked for the fix for this problem.
    What is the problem?

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Corragated steel tubing-the fix

    Please explain what you are referring to as the problem. Do you mean the lightning strike problem or some other.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  4. #4
    Robert Metheney's Avatar
    Robert Metheney Guest

    Default Re: Corragated steel tubing-the fix

    I am referring to the lack of a substantial bond between the gas piping and the electrical appliance.


  5. #5
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,898

    Default Re: Corragated steel tubing-the fix

    The appliance is considered grounded by the EGC in the circuit conductors.

    Bonding the CSST is covered by the installation instructions, not the NEC.

    All answers based on unamended National Electrical codes.

  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,245

    Default Re: Corragated steel tubing-the fix

    Quote Originally Posted by Jim Port View Post
    Bonding the CSST is covered by the installation instructions, not the NEC.
    Bonding is covered by both the installation instructions and the NEC, however, if the installation instructions are more stringent (most are) then the installation instructions take precedence.

    The newer types of CSST, such as CounterStrike, FlashShield, and the other brands like those require no additional bonding other than what is specified in the NEC.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  7. #7
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,898

    Default Re: Corragated steel tubing-the fix

    The NEC does not mention additional CSST bonding that I am aware of. Not being an installer of gas lines I have not seen the installation instructions for CSST. Gas line bonding is covered as both of us have stated.

    All answers based on unamended National Electrical codes.

  8. #8
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Corragated steel tubing-the fix

    Quote Originally Posted by Robert Metheney View Post
    I am referring to the lack of a substantial bond between the gas piping and the electrical appliance.
    When I see CSST without the required updated bonding (as is part of the class action suit/settlement) then I recommend having a licensed electrician to install the bonding and supply a link to the installation instructions from the manufacturer. It is my understanding this will reduce but not eliminate the risk associated with lightning.
    Beyond bonding, total replacement with iron pipe.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  9. #9
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,245

    Default Re: Corragated steel tubing-the fix

    Quote Originally Posted by Jim Port View Post
    The NEC does not mention additional CSST bonding that I am aware of.
    The NEC addresses CSST the same way it addresses galvanized gas piping, and the same way it addresses black iron pipe or copper pipe used for gas piping - no type of gas piping is mentioned by name or type, it is all just "gas piping":
    - 250.104 Bonding of Piping Systems and Exposed Structural Steel.
    - - (B) Other Metal Piping. Where installed in or attached to a building or structure, a metal piping system(s), including gas piping, that is likely to become energized shall be bonded to the service equipment enclosure, the grounded conductor at the service, the grounding electrode conductor where of sufficient size, or the one or more grounding electrodes used. The bonding jumper(s) shall be sized in accordance with 250.122, using the rating of the circuit that is likely to energize the piping system(s). The equipment grounding conductor for the circuit that is likely to energize the piping shall be permitted to serve as the bonding means. The points of attachment of the bonding jumper(s) shall be accessible.

    The CSST installation instructions require bonding per the NEC (as stated above), the installation instructions for regular CSST require an additional bond (in addition to the bonding stated in 250.104(B) ), whereas CounterStrike, FlashShield and the others like those do not require any additional bonding to what is required by 250.104(B).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  10. #10
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Corragated steel tubing-the fix

    This may also be covered in the Fuel Gas Code as noted below from the fireengineering.com site:



    "The 2009 edition of NFPA 54, National Fuel Gas Code, includes new requirements for bonding CSST gas piping systems to the grounding conductor of the building's electrical system, to reduce the possibility of damage by lightning strikes by reducing the electrical potential between metallic objects and building systems, including gas distribution."
    "7.13.2 CSST. CSST gas piping systems shall be bonded to the electrical service grounding electrode system at the point where the gas service enters the building. The bonding jumper shall not be smaller than 6 AWG copper wire or equivalent."


    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •