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| Welder Performance Qualification (Kharchenko Oleg) | |||
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| welder qualification test (welders qualification – официальный термин принятый в западных стандартах по сварке dks) | |||
| Аттестация сварщиков: 15 phrases in 7 subjects |
| Gas processing plants | 1 |
| General | 5 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Oil processing plants | 1 |
| Technology | 1 |
| Welding | 5 |