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Expect the Extraordinary.


Entergy—Grand Gulf Nuclear Generating Station -

APTIM provides best-in-class maintenance, modification and construction services to Entergy at the Grand Gulf Nuclear Station, located near Port Gibson, Mississippi. The station is a single-unit GE BWR-6 MARK III boiling water reactor, generating 1,250 MW of electricity. The plant has a 520-foot natural draft cooling tower. The scope of services include modification and supplemental maintenance services, and capital projects. 

Staff/Craft Levels: 4/600—Outage  1/40—Non-Outage 

Representative tasks include:

  • Snubber testing and installation
  • ISI support
  • Electrical modifications
  • Piping modifications
  • Civil modifications
  • Operate polar crane and turbine gantry crane
  • Cooling tower maintenance and repairs
  • Plant painting
  • Scaffold support
  • Plant chiller replacement/ modifications
  • Suppression pool platform installation
  • Suppression pool suction strainer installation 

APTIM provides maintenance and modification services to the Entergy North and South nuclear fleets, including Grand Gulf Nuclear Generating Station. APTIM enjoys a successful relationship with Entergy, a strategic account. We have supported numerous refuel outages and forced outages over the past several years. APTIM utilizes mixed craft for certain tasks to maintain a diverse workforce for possible emergent work. We also move core group craft employees from site to site to support refueling outages and forced outages. 

Contact Us

1780 Hughes Landing Blvd.
Suite 1000
The Woodlands, TX 77380

833 86 APTIM
833 862 7846