Atkinsrealis Nuclear Secured Holdings Corporation

Oak Ridge, TN

UEI: QLHSSEJN9MS9
CAGE: 7NA34
Primary NAICS: 541990 All Other Professional, Scientific, and Technical Services
SAM.gov registration: Active through Mar 23, 2027

Company facts

Self-certified in SAM.gov: Foreign Owned

For Profit Organization
Entity structure: Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov: 541990 All Other Professional, Scientific, and Technical Services Primary
Corporate family: Atkinsrealis Nuclear Secured Holdings Corporation QLHSSEJN9MS9

Atkinsrealis Energy Federal EPC Inc. NLDMWSTYELZ6

Atkinsrealis Nuclear Secured LLC C23QLMC5LAH3

Atkinsréalis Nuclear Solutions USA Inc. N4UDS3YT5YU8

Isotek Systems, LLC WJZ8KR7KSA33
SAM.gov registration date: Jun 6, 2016
Physical address: 545 Oak Ridge Turnpike, Oak Ridge, TN 37830, USA
Website: atkinsrealis.com
Founded: 1911
Employees: 10K-50K
Estimated annual revenue: $1B-$10B
Industry: Industrials

Capital Goods

Construction & Engineering

Civil Engineering
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Apr 2, 2026.

Atkinsrealis Nuclear Secured Holdings Corporation's Unique Entity ID (UEI) in SAM.gov is QLHSSEJN9MS9.

Atkinsrealis Nuclear Secured Holdings Corporation's CAGE code is 7NA34.

Atkinsrealis Nuclear Secured Holdings Corporation's primary NAICS code is 541990 (All Other Professional, Scientific, and Technical Services).

Atkinsrealis Nuclear Secured Holdings Corporation's physical address in SAM.gov is 545 Oak Ridge Turnpike, Oak Ridge, TN 37830, USA.

Yes. Atkinsrealis Nuclear Secured Holdings Corporation's SAM.gov registration is active through March 23, 2027.

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