Ключевые слова: accident, alarm, alert, architecture, attention, beware, building, careful, construction, damage, danger, dangerous, device, electric, electricity, energy, engineering, equipment, forbidden, halt, hazard, health and safety, inform, information, job, maintenance, overheard, personnel, plant, power, progress, protect, protection, restriction, risk, safe, safety, safety equipment, safety first sign, safety icon, safety signs, shock, sign, site, steel, symbol, tools, voltage, warning,