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PDFWAC 480-75-500

Moving and lowering hazardous liquid pipelines.

A pipeline company must prepare a study before it moves any line pipe to determine whether moving the line pipe will cause an unsafe condition. Moving the line pipe includes lowering the line pipe. This study must be reviewed and approved by a person designated by the pipeline company who is qualified to review the study. The pipeline company must retain a copy of the study for the life of the pipeline. The study must include pipe stress calculations based on API RP 1117 "Movement of In-Service Pipelines." Information about the API standards adopted and where to obtain it are set out in WAC 480-75-999, Adoption by reference.
[Statutory Authority: RCW 80.01.040, 80.04.060, 81.88.040. WSR 08-12-045 (Docket PL-070974, General Order R-548), § 480-75-500, filed 5/30/08, effective 6/30/08. Statutory Authority: RCW 80.01.040 and 80.04.160. WSR 02-18-032 (Docket No. TO-000712, General Order No. R-500), § 480-75-500, filed 8/26/02, effective 9/26/02.]
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