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Navy NEC · Engineering

N34Z Submarine Leading Engineering Laboratory Technician (LELT)

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 Leading Engineering Laboratory Technician performs radiological controls, water chemistry control functions, and associated analyses. The technician also operates and performs organizational level maintenance on mechanical systems for submarine nuclear propulsion plants.

Core Skills

  • Radiological controls and associated analyses
  • Water chemistry control and analysis
  • Nuclear propulsion mechanical system maintenance

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.

Nuclear Monitoring Technicians

Submarine radiological-control duties and associated analyses transfer directly to civilian radiation monitoring and exposure-control work.

How to prepare: Practice calculating safe exposure times from radiation readings and prescribed limits through civilian radiation-protection training exercises.

What the civilian work involves
  • Calculate safe radiation exposure times for personnel using plant contamination readings and prescribed safe levels of radiation.
  • Monitor personnel to determine the amounts and intensities of radiation exposure.
  • Inform supervisors when individual exposures or area radiation levels approach maximum permissible limits.
Civilian tools and software (examples)
  • Microsoft Excel

Chemical Technicians

Water chemistry control and associated analyses provide a practical foundation for civilian chemical laboratory testing.

How to prepare: Complete a hands-on laboratory course in chromatography or spectroscopy to extend water-chemistry experience to broader chemical testing.

What the civilian work involves
  • Conduct chemical or physical laboratory tests to assist scientists in making qualitative or quantitative analyses of solids, liquids, or gaseous materials.
  • Set up and conduct chemical experiments, tests, and analyses, using techniques such as chromatography, spectroscopy, physical or chemical separation techniques, or microscopy.
Civilian tools and software (examples)
  • Microsoft Excel

Mechanical Engineering Technologists and Technicians

Operation and organizational-level maintenance of submarine nuclear propulsion mechanical systems provide relevant experience for hands-on mechanical technical support.

How to prepare: Complete a mechanical drawing interpretation course with assembly and disassembly exercises.

What the civilian work involves
  • Assemble or disassemble complex mechanical systems.
  • Interpret engineering sketches, specifications, or drawings.

Notes & Sources

Evidence for this guidance (4 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC N34Z

    [1] NEC entry "N34Z - Submarine Leading Engineering Laboratory Technician (LELT)"; cached text line 8864; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Radiological controls and associated analyses, Water chemistry control and analysis, Nuclear propulsion mechanical system maintenance, Nuclear Monitoring Technicians (O*NET 19-4051.02), Chemical Technicians (O*NET 19-4031.00), Mechanical Engineering Technologists and Technicians (O*NET 17-3027.00)

  2. O*NET: Nuclear Monitoring Technicians

    [2] O*NET 30.3 occupational data

    Supports: Nuclear Monitoring Technicians (O*NET 19-4051.02)

  3. O*NET: Chemical Technicians

    [3] O*NET 30.3 occupational data

    Supports: Chemical Technicians (O*NET 19-4031.00)

  4. O*NET: Mechanical Engineering Technologists and Technicians

    [4] O*NET 30.3 occupational data

    Supports: Mechanical Engineering Technologists and Technicians (O*NET 17-3027.00)

Defense contractor jobs for N34Z

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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