Product Description

Sulzer Brothers (Sulzer Bros. Ltd. / Sulzer AG) allegedly supplied axial-flow and centrifugal process compressors, blast-furnace blowers, and air-separation main-air compressors to U.S. refineries, petrochemical complexes, air-separation plants, and integrated steel mills from the 1940s through the 1980s. Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Sulzer axial-flow compressors were assembled with compressed asbestos sheet gaskets at every horizontal casing split, vertical diaphragm joint, inlet nozzle, discharge nozzle, and inter-stage bleed flange, and with braided asbestos rope packing at the shaft gland seals.

Every internal inspection or diaphragm/rotor renewal allegedly required the casing to be split, the old asbestos gaskets to be scraped from the mating surfaces with knives and wire brushes, and fresh asbestos-loaded gaskets to be cut and installed. Gland renewals required the packing to be pulled and re-driven with new asbestos rope rings. Both operations released dry chrysotile fibers into the compressor building air.

Workers Exposed

  • Millwrights rigging Sulzer axial-flow casings, rotors, and diaphragms during major process-compressor overhauls.
  • Industrial mechanics performing scheduled gasket and gland-packing renewals on Sulzer units.
  • Pipefitters (UA) breaking inlet, discharge, and cooling-water piping into Sulzer compressor nozzles.
  • Machinists rebuilding Sulzer rotors, seals, and bearings at shop and field.
  • Instrument fitters working control tubing and gauge lines through Sulzer casing bosses during outages.

Bystanders in the compressor building were exposed to airborne fibers released by casing-split gasket scraping and packing removal.