Under the contract, Bechtel will also upgrade the fire and gas detection systems across the entire crude tank farm.
TengizChevroil is a joint venture between Chevron, ExxonMobil, KazMunayGas, and LukArco.
Bechtel Oil, Gas & Chemicals business unit president Jack Futcher said: "The Bechtel team will apply extensive technical knowledge and more than 30 years’ worth of experience working in Kazakhstan to deliver new tank storage capacity to the Tengiz facility on a short schedule.
"We look forward to continuing our work with TengizChevroil and the people of Kazakhstan as they develop important energy resources."
The project is expected to enhance 500,000 barrels of tank storage, export pumps, interconnecting pipe, switching manifolds, a monitoring station, associated facilities, and supporting infrastructure to the existing facility.
Earlier, Bechtel supported the development of the Tengiz and Korolev oil fields, built several oil and gas facilities at Tengiz, and constructed artificial islands with associated port facilities in the Caspian Sea, off the coast of Bautino.
