Ключевые слова: business, chemistry, construction, design, energy, engineer, engineering, environment, equipment, factory, flowing, fuel, gas, helmet, industrial, industry, leak, maintenance, man, manufacturing, mechanic, mechanical, metal, occupation, oil, pairs, people, petroleum, pipe, pipeline, pipelines, plant, platform, pollution, production, professional, pump, record, refinery, site, steel, teamwork, technician, technology, tube, valve, welding, work, work wear, worker,