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Electrical duct assessment

Electrical duct assessment

Electrical duct assessment

(OP)
Hi everybody,

I am thinking about how to assess the physical condition (cleaness, available space, ...) of an existing duct (20+years old) spare or not. Could anyone give me a convenient way to do so.
Thanks for your consideration.

Yigo

RE: Electrical duct assessment


Sample CSI Division-16 verbiage:
    Test each duct for blockage or deformation.
    1.  Use a flexible mandrel/scraper not less than 12 in. long with a diameter approximately ¼- inch less than the inside diameter of the duct.
    2.  Pull a mandrel behind a brush with stiff bristles.
    3.  Replace any duct section found blocked.
    4.  Notify …Contract Administrator 10 days before duct tests; submit written reports of tests to …Contract Administrator.
N.B.:  If duct is suspected to be “Transite” or other asbestos-cement material, it may be expedient to abandon in place without further study, contact, involvement, documentation or any resemblance of fanfare.
  

RE: Electrical duct assessment

You can also use a camera to inspect the inside of ducts.  A Google search on "camera duct" yields several useful links.

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