Product Description

Foster Wheeler Corporation designed and manufactured tray-type and spray-type deaerating feedwater heaters installed at utility powerhouses, refinery cogeneration plants, chemical-plant steam systems, and Navy shipboard auxiliary steam plants. A deaerator strips dissolved oxygen and non-condensable gases from boiler feedwater by intimate steam-water contact across cascading trays or atomizing spray valves inside a heated vessel.

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Foster Wheeler deaerating heaters were originally shipped, and were routinely serviced, with asbestos-cement internal packing and asbestos-fiber sealing components at multiple internal surfaces:

  • Asbestos-cement packing rings at tray-column deck penetrations and steam-baffle joints
  • Asbestos-fiber tray-support gaskets sealing the perimeter of stacked tray decks
  • Spray-valve seat gaskets on individual atomizing nozzles inside the heater dome
  • Manway and inspection-hatch gaskets at the heater shell openings used for internals access
  • Vent-condenser tube-sheet packing at the small overhead vent condensers integral to the deaerator

Foster Wheeler has been named as a Manufacturer Defendant in publicly filed U.S. asbestos personal-injury and wrongful-death litigation.

Workers Exposed

  • Boilermakers opening deaerator manways and pulling internals for inspection or retray
  • Pipefitters (UA members) replacing spray-valve assemblies and vent-line gasketing
  • Millwrights and maintenance mechanics during scheduled internals overhaul
  • Insulators stripping and re-installing removable blanket insulation over the deaerator shell
  • Navy machinist’s mates servicing shipboard deaerating feedwater tanks

Internals removal typically involved chipping, scraping, and hammer-tapping hardened asbestos-cement packing off deck edges and manway seats — an activity plaintiffs allege released respirable chrysotile fiber into the confined interior of the heater vessel.