Abstract: A seal plug and installation tool for providing fluid access to a fluid distribution pipeline having an internal liner affixed therein and a bore hole formed therethrough. The seal plug includes a body having an enlarged diameter head and an elongated stem, the stem and head having a fluid transmission passage therethrough. An expandable anchoring member is axially movable on the stem having an unexpanded diameter less than the diameter of the bore hole so that the anchoring member may be passed therethrough and thereafter expanded to a diameter larger that the pipeline bore hole. The installation tool is removeably attached to the pipeline and is releasably engageable to seal plug, and is used to insert the seal plug within the pipeline. The tool then draws the expanded anchoring member towards to the head to securely connect the seal plug to the pipeline and liner. A sealant is positioned at the junction of the pipeline, liner, and seal plug.