78. Where pouring pits are used at electrical arc furnaces for holding the ladles during pouring of the molten metal, such pits shall:(a) be clean and dry;
(b) allow at least 300 mm clearance on all sides of the ladle;
(c) have guardrails or be covered with non-slip steel plates when they are not in use; and
(d) have a minimum depth equal to half the height of the ladle.