Категории / Б.3.9 / Вопрос №54
Вопрос аттестации Ростехнадзора по разделу Б.3.9 «Проектирование металлургической промышленности».
Правильный ответ: б) 10 % первоначальных размеров
**Правило:** According to the requirements of Industrial Safety Regulations, a cable storage room or trunking system, including fibre optic communication lines, must be installed behind a closed housing or a closed enclosure with a door that can be locked. The door should be secured against accidental opening by a stopper or a catch, or by an electric switch connected to the power panel. **Запомни:** 10% nonce de размеры (10% первоsqних размеров) **Частая ошибка:** цапфы ковшей должны соответствовать ГОСТ 22483 ( mandatory measures that must be taken during the design and installation of the gear for the manufacture of open-type castings), or some students think that 20% of the original dimensions is a more common limit.