Under general supervision, performs skilled journey-level welding, brazing, cutting and burning to repair and fabricate metal parts and equipment in order to maintain boilers, pile-drivers, cranes, structural members, superstructure, infrastructure and heavy construction equipment. Fusion welders operate Tungsten Inert Gas (TIG), Metal Inert Gas (MIG), electric arc and oxyacetylene welding equipment and electric burning and arc gouging equipment, hydraulic press, shear, punch press, drill press, saw and forklift.
The 9346 Fusion Welder performs skilled welding work to repair and maintain boilers, structures, boats, vehicles and heavy construction equipment. The 9346 Fusion Welder is distinguished from Class 7360 Pipe Welder in that the latter installs, repairs and maintains water distribution pipelines and related facilities; as well as welds on pressure vessels (high pressure pipelines) It is distinguished from Class 7390 Welder which performs skilled welding work related to the repair and maintenance of facilities, various types of transit vehicles and related equipment.
Examples of Important and Essential Duties
According to Civil Service Commission Rule 109, the duties specified below are representative of the range of duties assigned to this job code/class and are not intended to be an inclusive list.
1. Welds, brazes and cuts all types of metals by using different types of welding equipment and rods to fabricate new, or repair/ build worn/ broken equipment.
2. Lays-out, cuts and welds metals for boilers, etc., based on blueprints, by selecting and using the appropriate materials, welding equipment and welding method to repair and maintain maintenance equipment, vehicles, structural members, superstructure and infrastructure.
3. Repairs and replaces to superstructure, infrastructure and heavy construction equipment by fabricating, installing, burning and welding cuts by torch or shear, fits and welds to complete the units by application of stick, TIG, MIG, oxyacetylene, brazing and soldering.
4. Fabricates hand rails, ladders and walkways by laying out material, cutting by torch or shear, fitting and welding to insure safe conditions for operating and working on cranes, piers and buildings.
5. Repairs breaks and cracks by arc gauging and re-welding in order to maintain and keep cranes, heavy construction equipment, train and crane tracks in operational condition.
6. Inspects materials and equipment by checking for cracks or other marks indicating damage or wear, visually and by using magna flux and die check equipment in order to prevent failure equipment.
7. Details shop drawings in order to document characteristics of damage or failures.
Knowledge, Skills and Abilities
Knowledge of: Various types of welding rods required by the type and weights of metals being welded and the type of weld (e.g. penetration, beveled, fillet, butt) to obtain maximum welded strength and efficiency. Includes knowledge of types of rods and polarities used in each type of welding equipment; Metals, in reference to the composition and properties of various ferrous metals; non-ferrous metals and alloys; and methods of identifying and/ or welding them. Includes knowledge of necessary precautions and preheating methods to avoid distortion or breakage of parts when welded.
Ability and Skills to: Operate welding equipment in reference to the ability to independently select proper welding equipment based on the job to be done; set up and adjust oxyacetylene, electric arc, MIG, TIG welding equipment, and torch cutting and arc gouging equipment; and set the track, for automatic oxyacetylene machine to make proper cuts; Use magna flux and dye check equipment in reference to the ability to inspect and evaluate materials for checks, cracks or breaks, both in the field and in the shop; Wear respirator or similar personal protective equipment while making repairs to various structures which may cause exposure to lead paint and/or other hazardous fumes by burning and welding as needed to insure safe working conditions; Use and operate hand tools and welding equipment including machines, air compressors, metal shears, drill press, automatic burning machine, air rivet gun, gas forge, air chipping gun, 100 ton press, iron worker punch press and other tools and welding equipment; Read and draw symbols and work from complex blueprints to perform all types of welding, brazing, cutting and burning; Safety procedures, in reference to proper safety equipment (gloves, goggles) and safe handling of welding equipment. Includes use of safety harness when working at heights, respirators, hearing protection devices, and flotation devices for working on or around water; Effectively communicate in regards to maintenance needs, safety concerns, and/ or other job related issues.
These minimum qualifications establish the education, training, experience, special skills and/or license(s) which are required for employment in the classification. Please note, additional qualifications (i.e., special conditions) may apply to a particular position and will be stated on the exam/job announcement.
Completion of a certified Boilermaker’s Apprenticeship Program, Ironworker’s Apprenticeship Program, or Military certification.
Three (3) years of verifiable journey-level welding experience. Experience MUST include use of ALL the following:
• Tungsten Inert Gas (TIG)
• Metal Inert Gas (MIG)
• Electric arc and oxyacetylene welding equipment
• Electric burning and arc gouging equipment
License and Certification:
Possession of a valid California driver’s license.
Additional qualifying journey-level welding experience may be substituted for the required apprenticeship program/Military certification on a year-for year basis.
Disaster Service Workers
All City and County of San Francisco employees are designated Disaster Service Workers through state and local law (California Government Code Section 3100-3109). Employment with the City requires the affirmation of a loyalty oath to this effect. Employees are required to complete all Disaster Service Worker-related training as assigned, and to return to work as ordered in the event of an emergency.