49 C.F.R. § 195.426 Scraper and sphere facilities.
Title 49 - Transportation
No operator may use a launcher or receiver that is not equipped with a relief device capable of safely relieving pressure in the barrel before insertion or removal of scrapers or spheres. The operator must use a suitable device to indicate that pressure has been relieved in the barrel or must provide a means to prevent insertion or removal of scrapers or spheres if pressure has not been relieved in the barrel. [Amdt. 195–22, 46 FR 38360, July 27, 1981; 47 FR 32721, July 29, 1982]
Title 49: Transportation
PART 195—TRANSPORTATION OF HAZARDOUS LIQUIDS BY PIPELINE
Subpart F—Operation and Maintenance
§ 195.426 Scraper and sphere facilities.
