Foster Wheeler Marine Boilers

Product Description

Foster Wheeler Corporation was one of the most prominent manufacturers of industrial and marine boilers in the United States throughout the twentieth century. The company supplied boilers to the United States Navy and to commercial shipping operators across several decades, with production spanning the mid-1900s through periods of significant industrial and maritime expansion. Foster Wheeler boilers were installed aboard destroyers, aircraft carriers, submarines, cargo vessels, tankers, and a wide range of other military and commercial watercraft.

These boilers served as the primary power source for steam-driven vessels, generating the high-pressure steam necessary to drive turbines, power propulsion systems, and supply shipboard utilities. Because of the extreme temperatures and pressures involved in marine boiler operation, thermal insulation was a fundamental engineering requirement throughout the design and construction of these units. Foster Wheeler’s marine boilers were accordingly specified with materials intended to withstand sustained heat, and asbestos-containing components were incorporated extensively into boiler systems during this era.

Foster Wheeler marine boilers were considered industry-standard equipment for much of the twentieth century. Their presence across both naval and commercial fleets meant that an exceptionally large population of workers—shipbuilders, sailors, engineers, and tradespeople—came into contact with these units during construction, installation, operation, maintenance, and repair.

Asbestos Content

Asbestos was incorporated into Foster Wheeler marine boilers through multiple components and associated materials. Insulation applied to the exterior surfaces of boiler shells and steam piping was commonly composed of asbestos-containing blankets, block insulation, and lagging materials. Gaskets used throughout boiler systems—including at flanges, valve connections, and inspection ports—were frequently manufactured from compressed asbestos fiber. Rope packing used to seal doors, access hatches, and expansion joints also commonly contained asbestos.

Refractory and furnace lining materials inside fireboxes and combustion chambers were another documented source of asbestos exposure. These internal linings were engineered to withstand direct flame and extreme thermal cycling, and asbestos was a preferred binding or reinforcing component in many such refractory products during the mid-twentieth century.

Because boiler systems required regular inspection and maintenance throughout a vessel’s service life, workers returned repeatedly to these asbestos-laden components. Each maintenance cycle—whether replacing gaskets, repairing insulation, or relining furnace chambers—presented renewed opportunity for fiber disturbance and inhalation.

How Workers Were Exposed

Workers encountered asbestos from Foster Wheeler marine boilers across multiple occupational settings and trade categories. Exposure occurred at shipyards during initial vessel construction, aboard ships during active service, and at dry-dock facilities during overhaul and repair work.

Shipyard and construction workers who fabricated, installed, and fitted out boiler rooms were among those with the heaviest documented exposures. Applying asbestos insulation to boiler shells and steam lines, cutting gasket material to fit, and installing refractory linings all generated respirable asbestos dust in confined spaces below deck. Ship compartments and engine rooms provided little ventilation, allowing airborne fibers to accumulate to significant concentrations.

Boilermakers and pipefitters working on installed systems performed tasks that regularly disturbed existing asbestos insulation. Removing and replacing lagging to access boiler components, cutting out old gaskets, and applying new packing materials released asbestos fibers directly at the work site.

Machinists and marine engineers who operated and maintained boilers over the course of a vessel’s service life were exposed during routine inspections and repairs. Opening inspection hatches, examining furnace interiors, and servicing valves and fittings brought workers into repeated contact with asbestos-containing materials in various states of degradation.

Navy personnel—including enlisted sailors and officers assigned to engineering divisions aboard naval vessels—lived and worked in close proximity to boiler rooms for extended periods. Aging and deteriorating asbestos insulation aboard older vessels could shed fibers continuously into the shipboard environment, creating ambient exposure for all personnel in affected spaces.

Industrial workers employed at shore-based power plants, industrial facilities, and refineries that used Foster Wheeler boilers of similar design also faced comparable exposure conditions, particularly during installation, maintenance, and decommissioning activities.

Asbestos-related diseases typically have latency periods of ten to fifty years between initial exposure and clinical diagnosis. As a result, individuals exposed to Foster Wheeler marine boilers during the mid-to-late twentieth century have continued to receive diagnoses of mesothelioma, asbestosis, lung cancer, and related diseases in recent decades.

Documented Product Identification

The following details are drawn from public asbestos litigation records, manufacturer catalog pages, technical manuals, and corporate history materials. Each item reflects the product as documented in those sources.

Documented asbestos-use period: 1935-1985

Corporate context: Foster Wheeler Energy Corporation (FWEC) designed and fabricated steam generating equipment, fired heaters, and oil refinery/chemical plant equipment. The company expanded into chemical plants after WWII.

Industries served: Marine, Navy/Military, Utilities, Industrial, Oil Refineries, Chemical Plants.

Naval / marine service: This manufacturer’s equipment is documented in connection with U.S. Navy and commercial-marine service.

Documented product lines:

  • Steam Generating Equipment - Marine Applications (1935-1945). Steam generating equipment designed and fabricated for marine applications including Navy boilers
  • Steam Generating Equipment - Utility and Industrial. Steam generating equipment designed, fabricated and/or erected for utility and industrial uses
  • Fired Heaters (until 1985). Fired heaters designed and/or erected for use in refineries and chemical plants
  • Oil Refinery and Chemical Plant Equipment (until 1985). Equipment designed, procured and/or constructed for oil refineries and chemical plants

Foster Wheeler provided 911 boilers to the Navy between 1935-1945 and expanded into chemical plant equipment after WWII. Operations in fired heaters and refinery/chemical plant equipment continued until 1985.