WAC 480-75-450   Construction specifications.  Each pipeline company must assure that any new pipeline construction conforms to the requirements of ASME B31.4. The longitudinal seams of connecting pipe joints must be offset by at least two inches. In addition, the longitudinal seams must be located on the upper half of the pipe when laid in an open trench. Information about the ASME edition 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. 08-12-045 (Docket PL-070974, General Order R-548), § 480-75-450, filed 5/30/08, effective 6/30/08. Statutory Authority: RCW 80.01.040, 81.01.010, 81.88.060. 07-09-001 (Docket PL-061026, General Order R-541), § 480-75-450, filed 4/4/07, effective 5/5/07. Statutory Authority: RCW 80.01.040 and 80.04.160. 02-18-032 (Docket No. TO-000712, General Order No. R-500), § 480-75-450, filed 8/26/02, effective 9/26/02.]