Product Description

Babcock & Wilcox Company (B&W) designed and supplied pressurized water reactor nuclear steam supply systems for the U.S. commercial nuclear fleet during the initial build-out era of the 1960s and 1970s. B&W nuclear plants — including the once-through steam generator (OTSG) two-loop plant design used at multiple U.S. utilities — relied on asbestos-fabric electrical cable insulation for high-temperature control, instrumentation, and heater-power cable routed through reactor containment and adjacent high-heat zones.

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that B&W nuclear cable systems included:

  • Asbestos-braided cable jacketing on control and instrument cable runs inside containment
  • Asbestos-fabric wrap tapes applied around cable bundles at primary shield penetrations
  • Asbestos-paper tape layered under jacketing where cables ran near steam generator upper laterals
  • Asbestos-fabric conduit and cable-tray liners in high-heat cable spreading rooms
  • Asbestos-cloth glands and terminations at pressurizer heater junction boxes

These cable systems were disturbed during initial construction, during cable additions and rework, during penetration-seal repair, and during any outage electrical work in the reactor building. Cable-pull crews stripped, re-jacketed, and re-terminated cable ends throughout the plant lifecycle.

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

Workers Exposed

  • Nuclear electricians (IBEW) pulling, terminating, and re-terminating asbestos-jacketed cable inside containment
  • IBEW cable pullers on construction and modification projects routing cable through hot zones
  • Instrumentation and control technicians stripping asbestos braid from cable ends at instrument racks and junction boxes
  • Nuclear maintenance electricians during containment outages replacing damaged cable sections
  • Bystander trades in cable spreading rooms and containment work areas during cable rework

Cable-jacket stripping and asbestos-braid removal at cable terminations were among the fiber-release activities alleged in publicly filed litigation — knife-stripping and hot-cutting old asbestos braid at junction boxes generated respirable-fiber exposure in electrical work areas.