Patent ID: 8646487

Claim:
An insert for an orifice fitting in a pipeline, the orifice fitting including a carrier, the carrier having select cross-sectional interior dimensions corresponding to cross-sectional interior dimensions of the pipeline, said insert including: a retaining member having an exteriorly facing surface dimensionally corresponding to the select cross-sectional interior dimensions of the carrier to positionally stabilize said insert in a predetermined position within the pipeline and in substantial registry with the orifice fitting, said retaining member also having an interiorly facing surface; a lug affixed to said interiorly facing surface of said retaining member, said lug projecting inwards towards a center of said retaining member, said lug providing an interiorly facing mounting surface; a dielectric insulating layer on said interiorly facing mounting surface of said lug, said dielectric insulating layer including a first element of a cooperating attachment member; and a second element of said cooperating attachment member, said cooperating attachment member removably securely retains a corrosion coupon on said dielectric insulating layer upon engagement of said second element with said first element.