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. Ability to perform welds by various means of welding processes in various positions including flat, horizontal, overhead, and vertical on metal of various types, which includes steel, bronze, aluminum, cast iron, stainless steel, and special alloys of such. Ability to perform fabrication (fitter) duties using verbal communication, sketches, and blueprints from engineers, supervisors, or other facility personnel. Ability to perform the required planning, layout, and fitting work involved in the construction, maintenance, and repair of equipment and structures. Ability to utilize the skills and knowledge to set up, use, and/or operate the full range of welding equipment and welding processes and devising special jigs and fixtures to hold the parts to be welded as needed. Ability to apply skills in using prepared clamps, fixtures, or jigs to assemble materials or parts for welding and using practical knowledge and ability to position and control the torch or arc and feed the welding rod or electrode to obtain the weld bead size required, penetration desired, and prevent burning base metal while welding common, similar metals of varying size, shape, and thickness to loose tolerances. Applicants must meet the requirements of the Office of Personnel Management (OPM) Job Qualification Handbook for Trades and Labor Occupations. Additional qualification information can be found at: 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.