Use of hot taps for gas pipelines can be expanded

Burke Delanty TransCanada PipeLines Ltd. Calgary This 30-in. branch (left) was installed on a 48-in. (880-psi MOP) pipeline under full-flow conditions near Caronport, Sask. Note stiffener ring and centering device as well as the nondestructive examination (MPI) work. (Photograph courtesy TransCanada Hot Taps, Calgary) [38,590 bytes] Welders install a 30-in., round-body gate valve near Caronport, Sask. (Photograph courtesy TransCanada Hot Taps, Calgary) [32,689 bytes]

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