Ключевые слова: area, attention, background, close, closed, construction, control, danger, dangerous, distribution, energy, equipment, faucet, fence, fire, flame, flammable, gas, gate, hazardous, house, industrial, industry, information, label, notify, object, outdoor, outside, pipeline, pipes, power, pressure, prevent, production, protection, pump, reservoir, safety, security, sign, station, supply, symbol, system, tank, technology, wall, warning, yellow,