A Question of Economics: The Answer Depends on the Assumptions

In 1970, President Nixon affirmed that the United States had long term objectives in the Antarctic regions and consolidated responsibility for management and funding of all Antarctic operations under the National Science Foundation. According to the new arrangement, the NSF was to take over the funding of PM-3A as of July 1, 1972. At the…

How Clean is Clean? Blasting Out Frozen Soil

The final disposition of the soil was to spread it out on the ground and cover it with asphalt, turning the expensively gathered Anarctic soil into a parking lot that continues to serve the sailors at Port Hueneme, California. After the decision was made to decommission the PM-3A, the Naval Nuclear Power Unit began planning…

Letter from the Editor: PM-3A, Pioneer in Anarctic Research

Recently I took my family to the Tampa, Florida Museum of Science and Industry (MOSI), which had a traveling exhibit on Antarctica. The display included a great deal of information about the dedicated explorers and unique wildlife indigenous to that remote land with one of the harshest climates on earth. Several of the exploration groups…

PM-3A Design and Construction: Rapid Pace to Fulfill a Need

The U. S. Navy began intensive involvement in Antarctic research missions during 1955 in preparation for the International Geophysical Year. The Department of Defense assigned the Navy the responsibility of maintaining and supplying the logistical needs of permanent research stations located in Antarctica. The assignment was based on the fact that the Navy had the…

First Nuclear Power Barge: Pioneer Barge Built in America

The Army Nuclear Power program recognized the potential benefits of putting a nuclear power plant on a water mobile platform in the early 1960s. In January, 1963, construction began on the Sturgis, a World War II vintage Liberty ship hull modified to accept installation of a 10,000 kilowatt pressurized water nuclear steam plant. Designated the…

Offshore Power Systems: Big Plants for a Big Customer

Most people associated with the nuclear industry, and many residents of Florida have some knowledge of the ill-fated Westinghouse/Newport News Offshore Power System project. Begun in 1970, this project was based on two ideas. The first was that a series of identical reactors produced in a factory type setting could be completed in a shorter…

Accident Consequences: Design Added to Magnitude

The SL-1 accident was initiated by the rapid withdrawal of the central control rod. Starting from a fully shutdown condition, the action produced a condition in the core technically known as a prompt criticality. When the SL-1 reactor achieved prompt criticality, a number of events happened in rapid succession. The core power level pulsed to…

SL-1: Designed for Remote Power and Heat

The Army’s designation , SL-1, tells us that the plant was a stationary, low power reactor, and that it was the first of its kind. The design work was done by Argonne National Laboratory in 1955-1956 under the name Argonne Low Power Reactor (ALPR). SL-1’s mission was to provide power to radar stations along the…

Letter from the Editor: Solving the SL-1 Mystery

One common link in the training of most nukes is the viewing of a grainy, black and white documentary on the aftermath of an accident at a reactor known as SL-1. The accident occured on January 3, 1961 at the Atomic Energy Commission’s National Reactor Testing Station near Idaho Falls Idaho. Three people died in…

What Caused the SL-1 Accident?: Plenty of Blame to Share

(Note from the editor: The following story is conjecture supported by interviews of first hand sources and a careful review of the written history. It is tempered with an understanding of reactor operations and human nature gained during more than six years in supervisory positions in military nuclear power plants. The mystery, however, is more…

January 1961: SL-1 Explosion Aftermath

At 9:01 pm on January 3, 1961, the first indication of trouble at SL-1 was received at Atomic Energy Commission Fire Stations. The alarm, which was triggered by one of several measured parameters at the plant, was immediately broadcast over all National Reactor Testing Station radio networks. By 9:10 pm, fire trucks and security personnel…

Water vs. Gas Cooled Reactors: Round 1

In the period from 1966 to 1964, there were two basic reactor choices being offered for commercial electric power production. American companies were offering reactors that used ordinary water under pressure as the reactor coolant. British and French companies were offering reactors using pressurized CO2 gas as the reactor coolant. There were substantial technical differences…