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Fabricate and weld custom brackets, supports, and structural components as required during installation and repair projects.

Use torch proficiently for cutting, heating, and fitting preparationHeat exchangers & pressure vesselsInstall, replace, and maintain heat exchangers; perform tube rolling, bundle removal and re-installation, and shell inspection.

Perform full pressure vessel repairs including shell patch welding, nozzle replacement, refractory removal and replacement, and re-certification support. Preventive maintenance Open, inspect, and close boilers and pressure vessels per PM schedule; document findings and condition of internal components with attention to detail and accuracy.

Re-gasket flanges, manholes, handholes, and access covers using correct gasket materials and torque specifications.

Perform burner service and safety-valve testing as part of scheduled PM visits.

Perform general maintenance tasks including lubrication, hardware replacement, and minor repairs to keep equipment in reliable operating condition. Mechanical work & piping Install, repair, and replace piping systems; perform pipe threading, fitting, and layout from blueprints and drawings.

Install, align, and service pumps and associated mechanical equipment; perform packing, seal, and coupling replacements.

Size pipe, valves, and system components to meet design specifications.

Perform minor rigging during equipment installation — including lifting, positioning, and securing boilers, heat exchangers, pumps, and vessels using appropriate rigging hardware and practices.

Complete work orders, daily activity reports, and as-built documentation accurately and on time.

Maintain a valid driver's license and clean driving record.

Work overtime and weekends as necessary; respond to emergency service calls.

Perform other related duties as assigned by the Service Manager.

Physical requirements Must be physically fit and able to: work with hands above the head for extended periods; carry a 50 lb pail 50 feet without difficulty; climb and descend ladders; and bend, kneel, and crouch for extended periods. Work takes place in industrial and mechanical room environments including confined spaces and extreme temperatures. PPE including welding gear, respirator, and fall-arrest harness is required. At Thermal Tech Inc, our core values—Customer Driven & Focused, Respect for People and Policy, and Doing the Right Thing—define who we are and guide everything we do. Our purpose is \"Helping the Customer Remove the Worry,\" targeting medium to large commercial and industrial customers who value consistent service and innovative solutions. We follow a proven process from needs assessment to lifelong partnership, committed to delivering total system efficiency and reliability. 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Find & Apply For Boilermaker Jobs in Jacksonville, Florida

Boiler Mechanic