{"id":"S97005346","label":"Pipe freezing (Pipeline maintenance)","description":"Here are entered works on a technique for producing a solid, pressure-resistant, frozen plug in a liquid-filled pipe or pipeline, in order to temporarily isolate a section of pipe for maintenance, repair, or modification.","source_url":"https://id.loc.gov/authorities/subjects/sh97005346","normalized_label":"pipe freezing (pipeline maintenance)","broader":["http://id.loc.gov/authorities/subjects/sh85078650","http://id.loc.gov/authorities/subjects/sh97005332"],"aliases":["Freeze sealing of pipelines","Freezing of pipelines (Pipeline maintenance)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh97005346","provider":"lcsh","revision":"f4dbaa3324596652","taxonomy_revision":"f050b5d4780b1289","title":"Pipe freezing (Pipeline maintenance)","url":"/topics/S97005346","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9241527173930960418","address_version":"morton4x16-v1","coordinates":[0,23,8380,34816],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}