This recommended practice (RP) applies to fittings used to repair and tie-in submarine pipelines. These fittings include: couplings, clamps, T-branch connections and isolation plugs. Mechanical means connect these fittings to the pipeline, but sleeves/couplings and T-branches may also be welded.
The RP provides guidance on pipeline repair methods such as pipeline hot tapping and above water tie-in. In addition, recommendations and guidelines on pipeline preparedness strategies, pipeline damage assessments and testing are given in this document.