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Projects

Waste Isolation Pilot Plant

WIPP workers driving cart through underground facility. WIPP workers driving cart through underground facility.

Delivering Permanent, Safe Disposal for Defense-generated Nuclear Waste

Bechtel manages and operates the Waste Isolation Pilot Plant (WIPP) for the U.S. Department of Energy (DOE), in Carlsbad, Mexico. Located in a salt formation more than 2,100 feet underground, WIPP is the nation’s only operating geologic underground repository for defense-related transuranic nuclear waste, or TRU waste.

The defense-related waste is comprised of sturdy, metal containers filled with clothing, tools, rags, residues, debris, soil, and other items contaminated with small amounts of plutonium and other human-made radioactive elements. WIPP receives regular shipments of the waste from DOE sites around the country and is responsible for emplacing the waste in the repository, consisting of underground tunnels and storage rooms.

Located in a bedded salt formation, the waste emplaced in disposal rooms at WIPP will be encapsulated in salt through natural geologic processes, safely isolating the waste for thousands of years.

Aerial view of the Waste Isolation Pilot Plant as a shipment of transuranic waste arrives.

Bechtel’s Role

In 2022, the DOE selected Salado Isolation Mining Contractors, LLC (SIMCO), a Bechtel National Inc. company, to manage and operate WIPP and lead capital improvement projects. In the 1980s, Bechtel was part of the team that designed, engineered, and constructed WIPP.

Extensive Expertise

For more than two decades, the Bechtel team has supervised the safe and permanent disposal of legacy waste from nuclear weapons production and nuclear defense activities at DOE sites. With Bechtel’s extensive experience in the mining industry and SIMCO’s world class leadership experience in mine construction, safety, and maintenance, the team provides cutting-edge design and operations knowledge, along with methods and tools to improve safety, schedule, and cost.

Workers place waste for final disposal.
Work continues on the utility shaft

Delivering Safe Operations

Recently, WIPP completed construction of the Safety Significant Confinement Ventilation System facility, a new, state-of-the-art, large-scale ventilation system. In 2024, WIPP recorded its best shipment performance in 10 years, by receiving 490 waste shipments from generator sites nation-wide. Additionally, for the first time in a decade, WIPP crews began mining a new waste disposal panel in the repository.