S-2.1, r. 4 - Safety Code for the construction industry

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3.24.21. Obligations of the principal contractor: Before the beginning of the dismantling work of a steel structure, the principal contractor must
(1)  locate, if applicable, the electric network of the work area, turn off the power and apply a locking procedure;
(2)  locate any gas, steam or liquid line and apply, if applicable, a method for purging the line and a locking procedure.
O.C. 391-2011, s. 2.