A Justification into the Use of Insulation Flanges (and Electricity Discontinuous Hoses) at the Ship/Shore and Ship/Ship Interface

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Insulation flanges have been in wide use for more than three decades and, while there have been no reported incidents of fires at tanker or gas carrier manifolds that may have been caused by arcing when connecting or disconnecting cargo hoses or arms, their use and effectiveness is still often challenged.

The purpose of this document is to provide an explanation of how insulation flanges provide protection against ignition caused by arcing.