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Thread: A really bad day: marine 138KV cables damaged

  1. #1
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    A really bad day: marine 138KV cables damaged

    https://www.ntsb.gov/investigations/...ts/MAB1912.pdf

    At 1732 local time on April 1, 2018, the articulated tug and barge (ATB) Clyde S VanEnkevort/
    Erie Trader was westbound with a crew of 14 in the Straits of Mackinac, Michigan, when the barge’s
    starboard anchor, which had unknowingly released and was dragging on the bottom, struck and
    damaged three underwater electrical transmission cables and two oil pipelines. About 800 gallons of
    dielectric mineral oil leaked into the water from the cables; the oil pipelines sustained only superficial
    damage. ...............

    (The NEXT sentence is the one we wince over....)

    Just be glad it ain't you.

    More at https://www.atcllc.com/straitscables/

  2. #2
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    It cost $100 million to repair some 138 kilowatt cables? Seems high.

    Just kidding: NTSB investigators don't understand electricity either.

  3. #3
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    I hate it when that happens.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  4. #4
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    Quote Originally Posted by jaggedben View Post
    It cost $100 million to repair some 138 kilowatt cables? Seems high.
    Not repair, replace. As I read it, once they stopped pumping dielectric fluid in, water, dirty water, encroached [far] up the cables.

    https://www.atc-projects.com/project...ement-project/

    AC is replacing both sets with solid dielectric triplex cables.

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