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Hydroelectric Plant Mechanic Apprentice (6458)

Hydroelectric Plant Mechanic Apprentice

California State Personnel Board Specification

  • Schematic Code: PL75
  • Class Code: 6458
  • Established: 03/04/1971
  • Revised: 02/21/1984
  • Title Changed: --


Under close supervision as an indentured apprentice, to learn progressively skilled work in the maintenance and repair of mechanical equipment in hydroelectric generating and pumping plants; and to do other related work.

Job Characteristics

This class is designed for entrance and performance in an apprentice program leading to journeyperson status as a Hydroelectric Plant Mechanic I. Persons in this class are indentured apprentices in training under the provisions of apprenticeship standards and written apprenticeship agreements as defined in Chapter 4, Division 3, of the Labor Code. Inability to maintain satisfactory progress in the academic and vocational work of the apprenticeship program is sufficient cause for separation from the program.

Typical Tasks

Assists a journeyperson Hydroelectric Plant Mechanic I and receives training in the repair, disassembly, and assembly of large and complex equipment such as piping systems, gear boxes, drive mechanisms, pumps, turbines, motors, generators, compressors, hydraulic power and pressure units, refrigeration and air conditioning systems, valves, gates and trash racks; learns to test, adjust, service and maintain various mechanical meters and gates used in measuring capacity, flow pressure, temperature and velocity of liquids and/or gases; learns to perform welding, burning, cutting, and grinding; learns rigging and how to operate large overhead cranes; participates in after-hour classroom and/or home study training in trade-related courses necessary to complete his/her training.

Minimum Qualifications

Either I


One year of experience in the California state service performing the duties of a Service Assistant (Maintenance and Operations).



Education: Equivalent to graduation from high school.

Knowledge and Abilities

Knowledge of: Basic arithmetic and algebra; mechanical principles and electrical fundamentals.


Ability to: Read and write English at a level required for successful job performance; learn rapidly; follow directions; acquire acceptable work habits such as punctuality, skill, neatness and dependability; work safely; make satisfactory progress in the prescribed academic and practical work in an approved apprenticeship program for Hydroelectric Plant Mechanic I.

Special Personal Characteristics

Willingness to work under close supervision; willingness to improve knowledge and efficiency by completing related courses as directed.

Additional Desirable Qualifications

Completion of courses in or knowledge of welding, mechanics, geometry, physics, blueprint reading or drafting.

  Updated: 6/3/2012
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