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Rancho Seco — Nuclear Facility Information

Technical specifications, photos, nearby jobs, satellite map, contact information, and per diem rates for Rancho Seco.

DECON

Permanently shut down on 1989-06-07.

Location & Contact

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Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Address:
14440 Twin Cities Road
Herald, CA 95638, USA
Get Directions
Phone: (916) 452-3211

Per Diem Rates FY 2026

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Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from GSA for FY 2026.
$150
Lodging/Night
$86
M&IE/Day
$236
Total/Day
Sacramento, Sacramento County, CA

Ownership & Construction

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The utility or company that owns and operates the facility, the architect-engineer responsible for plant design, and the primary construction contractor. Click names to view all facilities by that entity on the map.
Owner/Operator: SMUD

Technical Specs

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Reactor design specifications including type (PWR/BWR), containment design, nuclear steam supply system manufacturer, thermal and electrical power ratings, and current operational status.
Reactor Type: PWR
NSS Supplier: B&W
Net Capacity: 873 MWe
Status: DECON

Licensing

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NRC licensing history including docket number, license type and number, construction permit date, operating license issuance, commercial operation date, license renewal, and expiration date.
Const. Permit: 1969-04-01
Operating Lic: 1974-10-13
Commercial Op: 1975-04-17
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