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Marine Machinery Mechanic (Nuclear)

Location: Guam, Piti
Requires Relocation: Yes
Start Date: 27/01/2026
End Date: 02/02/2026
Offering Type: Permanent
Hiring Paths: Career transition (CTAP, ICTAP, RPL), Individuals with disabilities, Internal to an agency - appears on USAJOBS, Land & base management, Military spouses, Special authorities, Veterans
Service Type: Competitive
Travel Percentage: Occasional travel
Full Time On-site

U.S. Pacific Fleet

About U.S. Pacific Fleet

The Navy and Marine Corps team offers innovative, exciting and meaningful work linking military and civilian talents to achieve our mission and safeguard our freedoms. Department of the Navy provides competitive salaries, comprehensive benefits, and extensive professional development and training. From pipefitters to accountants, scientists to engineers, doctors to nurses-the careers and opportunities to make a difference are endless. Civilian careers-where purpose and patriotism unite!

Summary

Job summary

You will serve as a MARINE MACHINERY MECHANIC (NUCLEAR) in the Nuclear Production Department of GUAM DETACHMENT NUCLEAR REGIONAL MAINTENANCE DEPARTMENT at PEARL HARBOR NSY AND IMF.

Major duties

You will disassemble/repair/reassemble valves including primary system valves requiring radiological contamination controls. You will replace pumps and pump mechanical seals. You will perform primary and secondary system valve adjustments. You will repack nuclear secondary and primary system valves. You will interpret and apply the requirements contained in technical work documents, technical manuals, shop directives, multi-view blueprints. You will make the necessary templates, jigs, and other fixtures required for repair or installation utilizing knowledge of materials and their versatility.

Qualification

Although a specific length of time and experience is not required for most trade and labor occupations, you must show through experience and training that you possess the quality level of knowledge and skill necessary to perform the duties of the position at the level for which you are applying. Qualification requirements emphasis is on quality of experience, not necessarily the length of time. Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the job elements and screen out listed below. This job has a screen-out element which will be used to determine minimum eligibility for this job. Applicants who do not receive a minimum of two points on the screen-out element(s) will be found ineligible. The Screen-out Element for this position is: ABILITY TO DO THE WORK OF THE POSITION WITHOUT MORE THAN NORMAL SUPERVISION. Decipher and put to use technical specification, quality control and assurance procedures, test requirement, inspection and radiological priorities and policies. Direct and oversee the planning, scheduling and execution of nuclear production work applicable to ship availability. Applicants must meet the requirements of the Office of Personnel Management (OPM) Job Qualification System for Trades and Labor Occupations (X-118C). Additional qualification information can be found at: http://www.opm.gov/qualifications/x-118c/tabindx.asp. and https://www.opm.gov/policy-data-oversight/classification-qualifications/federal-wage-system-qualifications/#url=List-of-Approved-Job-Elements Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., professional, philanthropic, religious, spiritual, community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment.

Education

This position does not require any education. Additional Information: Eligible FWS employees recruited from outside of the insular area may be eligible for a Pay Differential of 20% of their basic pay. Percentages of differentials are subject to change without notice. Additional vacancies may be filled by this announcement. Marine Machinery Mechanics usually perform work inside and outside exposing them to the prevailing weather conditions, noise, and intermittent slippery or uneven surfaces. Frequently, work is performed in cramped areas, close confined spaces of ships and submarines with minimum light and ventilation, and in areas with high temperatures such as often exist in ships' boiler and laundry rooms. Some work is performed on or near nuclear reactor systems. They are constantly exposed to moving objects, elevations, and sharp edges with the possibility of cuts and bruises, and to noise and vibration from machines. They are also exposed to the possibility of an electric shock when working on wet surfaces and of serious injury from slipping and falling while working on masts, in the dry dock, and from ladders and staging. Dirt, grease, dampness, and chemical fumes are frequently encountered. Various protective devices such as safety shoes and glasses, gloves, and hard hats are used. Marine Machinery Mechanics frequently handle objects weighing up to 20 kilograms (45 pounds) and occasionally carry objects weighing 20 kilograms (45 pounds) and over for considerable distances. They are required to push, pull, reach, walk, stand, crawl, kneel, bond, and work in cramped positions over and under machinery of all types for sustained periods of time. Some work involves ascending and descending narrow vertical ladders or staging, often while carrying tools and equipment.

Evaluations

In order to qualify for this position, your resume must provide sufficient experience and/or education, knowledge, skills, and abilities to perform the duties of the specific position for which you are being considered. Your resume is the key means we have for evaluating your skills, knowledge, and abilities as they relate to this position. Therefore, we encourage you to be clear and specific when describing your experience. When the application process is complete, we will review your resume to ensure you meet the hiring eligibility and qualification requirements listed in this announcement. You will be rated based on the information provided in your resume and responses to the Occupational Questionnaire, along with your supporting documentation to determine your ability to demonstrate the following competencies: ABILITY TO DO THE WORK OF THE POSITION WITHOUT MORE THAN NORMAL SUPERVISION ABILITY TO FOLLOW DIRECTIONS IN A SHOP ABILITY TO USE AND MAINTAIN TOOLS AND EQUIPMENT DEXTERITY AND SAFETY You should list any relevant performance appraisals and incentive awards in your resume as that information may be taken into consideration during the selection process. If selected, you may be required to provide supporting documentation. If after reviewing your resume and supporting documentation, a determination is made that you inflated your qualifications and/or experience, your score may be adjusted to more accurately reflect your abilities or you may be found ineligible/not qualified. Please follow all instructions carefully. Errors or omissions may affect your rating or consideration for employment. All eligibility, qualifications, and time-in-grade requirements must be met by the closing date of this announcement.