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.