Product Description

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Universal Oil Products Company (UOP) licensed, designed, and supplied alkylation units — both HF-acid and sulfuric-acid processes — to U.S. refineries across the mid-20th century, and that the flanged process piping around the reactor-effluent, acid-settler, isobutane recycle, and depropanizer/deisobutanizer fractionator sections was sealed with allegedly asbestos-containing compressed sheet gaskets and spiral-wound gaskets with asbestos filler material as originally specified and as replaced during turnarounds.

According to publicly filed asbestos litigation records, a UOP alkylation unit turnaround required pipefitters to break dozens of process-piping flanges around the reactor, acid settler, and fractionator column bases, scrape the aged asbestos gasket material from the raised-face mating surfaces, and cut and install fresh CAF sheet or spiral-wound rings — with the scraping and cutting operations at the flange face allegedly releasing respirable asbestos fibers into the pipefitter’s breathing zone throughout the turnaround.

Workers Exposed

  • Pipefitters breaking and remaking reactor-effluent, acid-settler, isobutane recycle, and fractionator process-piping flanges
  • Boilermakers performing reactor, settler, and column internal repairs and manway gasket work
  • Insulators stripping and re-applying process-piping and column insulation around flange work
  • Millwrights and mechanics performing rotating-equipment work on alkylation-unit pumps and compressors