Haddam Neck Nuclear Power Plant, Reactor Containment, 362 Injun Hollow Road, Haddam, Middlesex County, CT

The addendum report (beginning on page 64) supersedes the original report. Researchers should consider the addendum report the definitive version and consult it instead of the original one.
Significance: The Haddam Neck Nuclear Power Plant was one of the earliest commercial scale nuclear power stations in the United States, and was eligible for the National Register of Historic Places. Reactor containment was one of the two most significant structures at the complex, along with the Turbine Building and produced the steam which was converted to electrical energy in the Turbine Building. Reactor Containment equipment design was typical of contemporary choices in reactors, steam generators and other major nuclear steam supply components. The steam generators had problems common to plants of this vintage.
Unprocessed Field note material exists for this structure: N1361
Survey number: HAER CT-185-B
Building/structure dates: 1964-1966 Initial Construction
Building/structure dates: before 2012 Demolished