US Army Corps of Engineers
Baltimore District

April 2019 Public Engagement Opportunities


Off- Post

Where: Fort Greely Community Activity Center
When: Tuesday April 23, 2019


Click for SM-1A Presentation Given

(Held Following the Fort Greely Restoration Advisory Board)

Where: Delta Junction City Hall
When: Wednesday April, 24, 2019

Click for SM-1A Presentation Given


Stakeholder Update: May 3, 2019

May 3, 2019 Stakeholder Update:

Dear SM-1A Stakeholders,

We’d like to thank everyone who took time in late April to attend our on-post project update and the community update after the Fort Greely Restoration Advisory Board.  Our team was excited to receive feedback during these meetings.  The feedback received throughout this process is the key to our success and we appreciate the helpful and insightful comments we received at both sessions.

For those who could not attend in person, the presentations presented at both sessions are now available online at the project website:  We’ve also updated the project site to include the posters presented and some additional photos of the SM-1A site.  As we move forward with our planning process for the dismantling and decommissioning of the SM-1A Deactivated Nuclear Power Plant, we will continue to seek feedback, engage with our stakeholders and the public, and transparently distribute project information.

The team is using the data collected from our visit in April to work to develop a Request for Proposal to award a contract to engineer the Utility Segregation between the north and south ends of the plant.  The utility segregation work is critical to the project in that it will allow our team to ensure the Fort Greely staff that we will not interfere with the utilities provided by the south end of the plant (water, steam, back up electricity, etc.).  We anticipate that this engineering effort will be awarded by July.  

The project team will be returning to the SM-1A site at Fort Greely in the late July/early August timeframe to host a site visit for contractors interested in bidding on the Decommissioning Project.  Specific information on the contractor site visit will be posted on FedBiz Ops in the next month or so.  Once the details are available, we will provide the information to the stakeholders, as well.  During the visit, our team will also perform additional work required for our planning process, plus we will start the engineering design work for the utility segregation.

As a reminder, the SM-1A deactivated nuclear power plant on Fort Greely has been deactivated since the early 1970s. The U.S. Army Corps of Engineers, Baltimore District - a Regional Radiological Center of Expertise – and the U.S. Army Corps of Engineers, Alaska District are working together closely with Army Garrison Alaska to implement the SM-1A decommissioning and dismantlement. 

The U.S. Army Corps of Engineers is continuing its early planning stages work to develop the various planning documents for the final decommissioning and dismantling of the facility. The team anticipates awarding a contract for the decommissioning work as early as 2022, meaning decommissioning work on site likely will not begin until 2022 or 2023 at the earliest.

As always, feel free to e-mail any questions or concerns you may have to me.

Click here for an archive of SM-1A Stakeholder Updates

SM-1A Nuclear Power Plant Overview

The SM-1A Nuclear Power Plant is located in central Alaska, approximately 6 miles south of Delta Junction on the Fort Greely Military Reservation. Fort Greely is approximately 100 miles southeast of Fairbanks and 225 miles northeast of Anchorage.

The construction of the SM-1A at Fort Greely began in 1958 and was completed in 1962 with first criticality achieved on 13 March 1962. The design was based on the concept of the SM-1 reactor at Fort Belvoir, Virginia, a prototype for stationary medium-power plants (“SM”). The “1A” moniker designates it as the first field plant of its type.

It was designed to be used as an “inservice” test facility for this type of equipment in an arctic environment with its primary mission being to supply electrical power and heating steam for the utility systems at Fort Greely. The secondary mission was to study the economics of operating a nuclear-type electrical plant compared to conventional oil-fired systems in a remote area where fuel costs are high and supply lines unusually long. The SM-1A was a 20.2 megawatt-thermal (MWt) pressurized water reactor which could supply 72,000 pounds of saturated steam per hour. The reactor used uranium oxide, highly enriched in U-235 and clad in stainless steel, as fuel. Due to the high operating costs and the projected cost of replacing the reactor pressure vessel, a decision was made to shut the plant down by 1968.

This decision was reversed when an annealing process was utilized to extend the vessel’s lifetime. Additionally, it was thought that continued operation would offer opportunities for experience and information about the reliability and lifetime of nuclear plants. By modifying an unused core procured for the portable medium-power PM-2A Nuclear Power Plant (Greenland) and using other spare fuel elements, an additional core was assembled, prolonging the active use of the SM-1A for five more years.

The final shutdown was performed on the SM-1A Reactor in March 1972, in accordance with the SM-1A Decommissioning Plan as approved by the Army Reactor Systems Health and Safety Review Committee (ARCHS). This consisted of removal of the nuclear fuel, minor decontamination, shipment of pre-packaged radioactive waste, encasing certain reactor components (vapor container, waste tanks, and demineralizer room), sealing the pressure vessel, and installing appropriate warning signs and monitoring devices. Certain areas were maintained as restricted areas for radiation safety considerations.

This method of decommissioning was selected due to the low initial cost and low personnel radiation exposure. Future remediation was to take place at a time when radiation levels and quantities of radioactive waste were significantly reduced due to radioactive decay.

In 1995, Fort Greely was placed on the Base Realignment and Closure list. As part of the BRAC, certain areas associated with the SM-1A were investigated and remediated. Three specific areas were released under a Record of Decision, BRAC Site 90, BRAC Site 132, and Wastewater Pipeline Station 21+25.The AHA process supplies information to support the decommissioning study process outlined in Army Regulation 50-7. This process is performed by USACE, at the direction of the Army Reactor Office, to better define disposal activity costs.

SM-1 A Deactivated Nuclear Power Plant NoticeThe decommissioning strategy that was developed in the 1970's recommended that the deactivated reactors be placed into a safe storage mode that would allow the shorter-lived radionuclides to decay. It was expected that delaying decommissioning would reduce radioactive waste volumes and worker exposures. However, preliminary studies indicated that the levels of contamination present within the reactors would not be reduced by decay sufficiently to allow for release of the facilities without significant decontamination being performed. Additionally, concern regarding the increasing cost and decreasing availability of radioactive waste disposal led the Army Reactor Office (ARO) to recommend that an assessment be performed of the SM-1A reactor to allow for a more accurate decommissioning cost estimate to be developed which addresses projected changes in disposal options.

USACE developed a management plan for conducting an AHA, which contained provisions for four phases of work to be performed. Phase I included a Historical Records Review and Disposal Alternatives Investigation. Phase II, included performing a characterization survey and decommissioning cost estimate. Initial Phase II efforts were completed in 2015. Phases III and IV deal with decommissioning planning, design, and execution.

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Project Documents

This section includes the project documents to date.