Caulking Worker (Boilermaking)
こーきんぐこう（せいかん）
Industry & Occupation
Classification
Summary
This occupation involves filling gaps in seams and welds of metal containers after boilermaking with sealing material to ensure waterproofing and airtightness.
Description
Caulking workers (boilermaking) are specialists who apply and fill sealing materials into seams and weld areas of tanks and pressure vessels assembled from metal plates. They perform surface cleaning and polishing for base preparation, apply masking, and then accurately fill using a caulking gun. After curing, excess material is cut and polished off, and airtightness and watertightness tests such as air leak tests and hydrostatic tests are conducted to confirm compliance with specifications. Accurate construction based on specifications and drawings, as well as safety and health management, are required.
Future Outlook
While automation technology is advancing, sealing work requiring high airtightness and watertightness is indispensable for manual labor, and demand remains stable. Skill succession and quality improvement are key challenges.
Personality Traits
Cautious / Dexterous with hands and good at detailed work / Meticulous / Team player
Work Style
Career Path
Apprentice Caulking Worker → Caulking Worker → Team Leader → Quality Control Staff → Site Supervisor
Required Skills
Airtightness and Watertightness Testing / Blueprint Reading (Boilermaking) / Sealing Application / Surface Treatment (Polishing)
Recommended Skills
Basic Welding Knowledge / CAD Basics / Quality Control / Safety and Health Management
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Attention to Detail & Accuracy | Overlooking minute gaps can lead to leaks |
| Physical Stamina & Endurance | Involves long hours of standing work and manual labor, requiring physical stamina |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | Work is performed based on established procedures |
| Numerical & Quantitative Analysis | Involves little quantity calculation or precise numerical analysis |
Related Qualifications
- Arc Welding Technician
- Gas Welding Technician
Related Jobs
- Boilermaker
- Ironworker
- Painter
- Pipefitter
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