{"operation":"document","citation":"WAC 480-75-390","title":"Valve spacing and rapid shutdown.","source_type":"regulation","agency":"Washington Utilities and Transportation Commission","status":"current","official":true,"published_on":null,"effective_on":"2008-06-30","summary":"(1) Each pipeline company must have procedures to rapidly locate and isolate reportable releases from its pipeline.\n\n(2) When determining the type of valve to be used, its location, and its shut-off time, each pipeline company must consider the following:\n\n(a) Terrain;\n\n(b) Geohazards;\n\n(c) Drainage","machine_formats":{"json":"https://regulus.evalyn.ai/document/wac-480-75-390.json","markdown":"https://regulus.evalyn.ai/document/wac-480-75-390.md"},"app_url":"https://regulus.evalyn.ai/document/wac-480-75-390","source_url":"https://app.leg.wa.gov/WAC/default.aspx?cite=480-75-390","body":"(1) Each pipeline company must have procedures to rapidly locate and isolate reportable releases from its pipeline.\n\n(2) When determining the type of valve to be used, its location, and its shut-off time, each pipeline company must consider the following:\n\n(a) Terrain;\n\n(b) Geohazards;\n\n(c) Drainage; and\n\n(d) Type and condition of the pipe.\n\n(3) Whenever a pipeline company installs a new rapid shutdown valve, the pipeline company must conduct a surge analysis to ensure that the surge pressure in the pipeline will not exceed one hundred ten percent of the maximum operating pressure as a result of a rapid valve closure.","truncated":false,"body_characters":625}