Nuclear Field "A" School

Nuclear Field "A" School. It is a specialized technical training program within the United States Navy designed to provide enlisted personnel with the foundational knowledge required to operate and maintain naval nuclear propulsion plants. The school is a critical component of the pipeline for sailors entering the Naval Nuclear Propulsion Program, overseen historically by figures like Admiral Hyman G. Rickover. Successful completion is mandatory for assignment to nuclear-powered vessels, including aircraft carriers and submarines in the Atlantic and Pacific Fleets.

Overview and Purpose

The primary purpose of the school is to transform recruits into technically proficient sailors capable of supporting the complex nuclear reactor systems that power the Navy's most advanced warships. It serves as the initial formal education segment within the broader Nuclear Power School pipeline, which also includes prototype training at facilities like S8G or S6W prototypes. The instruction emphasizes the theories of nuclear physics, thermodynamics, and radiation health necessary for the safe operation of plants based on designs from Bettis Atomic Power Laboratory and Knolls Atomic Power Laboratory. This training ensures personnel meet the exacting standards set forth by the Naval Reactors directorate and Naval Sea Systems Command.

Curriculum and Training Phases

The curriculum is intensive and mathematics-focused, covering core principles of mechanical engineering and electrical engineering as applied to naval nuclear propulsion. Initial phases concentrate on advanced algebra, calculus, and atomic theory before progressing to systems-specific knowledge. Trainees study reactor plant kinetics, heat transfer mechanisms, and the operation of primary and secondary loops. The training is conducted at the Naval Nuclear Power Training Command in Charleston, South Carolina, utilizing modern classrooms and laboratories. The final academic phase is followed by hands-on training at a Nuclear Power Training Unit using operational prototypes, bridging theoretical knowledge with practical application under the supervision of Navy instructors and Department of Energy personnel.

Prerequisites and Selection Process

Admission is highly selective and requires candidates to first pass a stringent screening process. All applicants must achieve qualifying scores on the Armed Services Vocational Aptitude Battery, particularly in the mechanical and technical domains, and pass a comprehensive physical examination. A critical background investigation conducted by the Defense Counterintelligence and Security Agency is mandatory for security clearance. Candidates are often recruited from programs like the Nuclear Field (NF) program and must demonstrate high academic aptitude, personal integrity, and motivation during interviews at Military Entrance Processing Station locations. The final selection authority rests with Naval Reactors, reflecting the program's demanding standards.

Career Paths and Assignments

Graduates are designated as either Electrician's Mate (EM), Electronics Technician (ET), or Machinist's Mate (MM) within the nuclear field. Their subsequent assignments are to nuclear-powered vessels, including Ohio-class and Virginia-class submarines or Nimitz-class aircraft carriers and the new Gerald R. Ford-class aircraft carrier. Following prototype qualification, sailors may serve in roles supporting the Strategic Weapons Facility or instructor billets at training commands. Advanced career progression can lead to positions at Naval Reactors, Shipyards like Puget Sound Naval Shipyard, or assignments with the Department of Defense and National Nuclear Security Administration. Many alumni have transitioned to influential roles in the civilian nuclear sector, including at Tennessee Valley Authority or Exelon.

History and Evolution

The school's origins are deeply intertwined with the development of the Navy's nuclear fleet under the leadership of Admiral Hyman G. Rickover in the post-World War II era. Initial training was consolidated at the Naval Nuclear Power School, originally located in Mare Island Naval Shipyard before moving to its current home. The curriculum and structure have evolved significantly with advances in technology, from the early S1W reactor and S2W reactor plants to the modern A4W reactor and S9G reactor systems. Key developments were influenced by reports from the United States Atomic Energy Commission and lessons from historical events like the USS *Thresher* disaster. Today, the school remains a cornerstone of the Naval Nuclear Propulsion Program, adapting to integrate new digital control systems and training methodologies to support the fleet of the 21st century.

Category:United States Navy training