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Navy NEC · Engineering

N51Z Submarine Nuclear Propulsion Plant Emergency Welder

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

A Submarine Nuclear Propulsion Plant Emergency Welder performs emergency weld repairs on propulsion plant piping. The welder also repairs propulsion plant components during emergencies.

Core Skills

  • Weld repair of propulsion piping and components

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Welders, Cutters, Solderers, and Brazers

Emergency weld repairs on propulsion plant piping and components directly overlap with civilian repair welding.

How to prepare: Arrange a hands-on welding assessment with a trade program or prospective employer to identify practice needed for the processes and positions used in target jobs.

What the civilian work involves
  • Weld components in flat, vertical, or overhead positions.
  • Examine workpieces for defects and measure workpieces with straightedges or templates to ensure conformance with specifications.
  • Recognize, set up, and operate hand and power tools common to the welding trade, such as shielded metal arc and gas metal arc welding equipment.

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC N51Z

    [1] NEC entry "N51Z - Submarine Nuclear Propulsion Plant Emergency Welder"; cached text line 8890; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Weld repair of propulsion piping and components, Welders, Cutters, Solderers, and Brazers (O*NET 51-4121.00)

  2. O*NET: Welders, Cutters, Solderers, and Brazers

    [2] O*NET 30.3 occupational data

    Supports: Welders, Cutters, Solderers, and Brazers (O*NET 51-4121.00)

Defense contractor jobs for N51Z

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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