Cleaver-Brooks Package Firetube Boilers

Product Description

Cleaver-Brooks, a Milwaukee-based industrial equipment manufacturer, became one of the dominant names in commercial and industrial boiler manufacturing throughout the twentieth century. The company’s package firetube boilers were among its most widely recognized product lines, designed as self-contained, factory-assembled units that could be shipped and installed with minimal on-site labor. Unlike field-erected boilers that required extensive construction at the installation site, package firetube boilers arrived largely complete, containing the burner, controls, and pressure vessel within a single integrated assembly.

These units found widespread use across a broad spectrum of industrial and commercial settings, including manufacturing plants, hospitals, universities, refineries, food processing facilities, and large commercial buildings. The firetube design routes hot combustion gases through tubes submerged in water, transferring heat efficiently to generate steam or hot water for process heating, space heating, and power generation. Cleaver-Brooks firetube boilers became industry standards due to their reliability, compact footprint, and ease of maintenance relative to watertube alternatives.

Production of these boilers spanned much of the mid-twentieth century through later decades, coinciding with an era when asbestos-containing materials were commonly specified by engineers and incorporated by manufacturers across virtually all categories of thermal equipment.

Asbestos Content

Firetube boilers of the type manufactured by Cleaver-Brooks were constructed during a period when asbestos was considered the material of choice for high-temperature insulation and sealing applications. Litigation records document that asbestos-containing materials were present in multiple components of these boiler systems, either as originally manufactured or as specified materials routinely installed and maintained alongside the equipment.

Plaintiffs alleged that asbestos materials associated with Cleaver-Brooks package firetube boilers included refractory insulation applied to combustion chambers and firebox walls, rope gaskets and door gaskets used to seal access ports and inspection doors, block and blanket insulation applied to the exterior boiler shell, and insulating cements used around boiler fronts, breechings, and flue connections. Litigation records further document that replacement parts and maintenance consumables supplied or specified for use with these boilers frequently contained asbestos through much of the twentieth century.

Gaskets presented a particular exposure concern because firetube boilers require periodic re-gasketing of handhole covers, manhole covers, and front and rear doors as part of routine maintenance. Each of these service points historically relied on compressed asbestos fiber sheet or woven asbestos rope gaskets capable of withstanding elevated pressures and temperatures. When worn gaskets were removed and replacement gaskets were cut to fit, friable asbestos fibers were released into the immediate work environment.

Refractory materials lining the combustion chambers of these boilers were similarly documented to contain asbestos in products used during installation and repair. Plaintiffs alleged that refractory castables, insulating fire bricks, and high-temperature cements associated with boiler construction and service contained significant proportions of asbestos fiber.

How Workers Were Exposed

Industrial workers across a range of trades and job functions encountered Cleaver-Brooks package firetube boilers during installation, operation, and maintenance throughout the boiler’s service life. Exposure was not limited to a single trade or a single point in the equipment lifecycle; litigation records document that multiple worker populations faced asbestos exposure associated with these units.

Boilermakers and pipefitters involved in the initial installation of package boilers handled insulating materials, cut and fitted gaskets, and applied refractory and insulating cements during commissioning. Plaintiffs alleged that this installation work generated visible dust containing asbestos fibers as workers prepared materials and fitted them to the boiler surfaces.

Operating engineers and stationary engineers responsible for the day-to-day operation of industrial boiler systems performed routine inspections that required opening access doors, removing gaskets, and inspecting combustion chambers. Litigation records document that this routine work brought these workers into repeated contact with deteriorating asbestos gaskets and degraded refractory materials over careers that could span decades.

Maintenance mechanics and industrial maintenance workers performed periodic boiler overhauls, which typically involved stripping deteriorated exterior insulation, removing and replacing combustion chamber refractory, and re-gasketing all sealed openings. Plaintiffs alleged that boiler overhaul work was among the most intensive sources of asbestos exposure associated with firetube boiler service, as large quantities of aged and friable insulation were disturbed or removed in the course of a single maintenance event.

Insulators who lagged and re-lagged the exterior surfaces of boiler systems handled asbestos block, blanket, and cement products throughout the installation and maintenance cycle. Litigation records document that insulators working in boiler rooms and mechanical equipment spaces were exposed not only to the materials they applied directly but also to airborne fibers generated by the work of other tradespeople in the same confined spaces.

The enclosed nature of boiler rooms and mechanical equipment spaces amplified exposure risks for all trades present. Ventilation in these spaces was typically limited, and work performed by one trade often generated airborne dust that affected all workers in the area regardless of their specific task.

Because Cleaver-Brooks has operated as an ongoing business entity, asbestos claims involving its package firetube boilers have proceeded primarily through civil litigation rather than through a dedicated asbestos bankruptcy trust fund. There is no Cleaver-Brooks asbestos trust fund established under Section 524(g) of the U.S. Bankruptcy Code. Individuals seeking compensation for asbestos-related illness connected to Cleaver-Brooks equipment must pursue claims through the civil tort system.

Litigation records document that Cleaver-Brooks has been named as a defendant in asbestos personal injury lawsuits filed in multiple jurisdictions. Plaintiffs alleged that the company knew or should have known about the hazards associated with asbestos-containing components incorporated into or specified for use with its boiler products, and that the company failed to provide adequate warnings to workers who would foreseeably encounter these materials during installation and maintenance.

Workers who developed mesothelioma, lung cancer, asbestosis, or other asbestos-related diseases after occupational exposure to Cleaver-Brooks package firetube boilers may have legal recourse through direct litigation against Cleaver-Brooks and potentially against manufacturers of specific asbestos-containing component parts used in connection with these boilers. Claims may also be available through asbestos bankruptcy trusts established by former manufacturers of insulation, gaskets, and refractory materials that were used with this equipment.

Industrial workers, boilermakers, operating engineers, pipefitters, maintenance mechanics, and insulators with documented exposure history involving Cleaver-Brooks firetube boilers are encouraged to consult with an attorney experienced in asbestos litigation to evaluate eligibility for compensation. Relevant documentation, including work history records, union records, and any available employment records identifying specific job sites and equipment, can assist in establishing the exposure history necessary to support a claim.