June 2015, Vol. 242, No. 6

Features

PG&E Completes Cast-Iron Replacement, Earns Safety Certifications

Since Pacific Gas and Electric Company (PG&E) finished replacing all 835 miles of cast-iron pipeline in its system ahead of its 2014 year-end goal, the company has turned its attention to further modernizing its infrastructure with the latest gas-safety technology and by building a skilled workforce. The decommissioning of cast-iron pipe, which began in 1985, covered enough distance to run from Seattle to San Francisco, and has been followed by implementation of one of the most comprehensive modernization programs in the nation. Thus far, PG&E’s effort has entailed validated the maximum allowable operating pressure of its entire 6,750-mile transmission pipeline system, re

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