Canada–Nova Scotia Offshore Area Occupational Health and Safety Regulations — 145
Approach boundaries 145 (1) Every employer must ensure that no person at a workplace under its control is closer to an exposed energized electrical conductor or circuit part than (a) the applicable restricted approach boundary, unless they are a person referred to in paragraph 144 (1)(m); or (b) the applicable limited approach boundary, unless they are a person referred to in paragraph 144 (1)(m) or are accompanied by such a person. No closer than necessary (2) In any case, no person may be closer to an exposed energized electrical conductor or circuit part than is necessary to carry out their work. Work within limited approach boundary (3) If a person must work closer to an exposed energized electrical conductor or circuit part than the applicable limited approach boundary but does not require access to the conductor or part, or if a person working outside that boundary is at risk of inadvertently moving within it, the employer must ensure that (a) temporary barriers that do not touch the equipment to which the conductor or circuit part belong are installed to prevent access to the conductor or part; and (b) the work is constantly observed by an electrical safety watcher designated by the employer. Work within restricted approach boundary (4) If a person must work closer to an exposed energized electrical conductor or circuit part than the applicable restricted approach boundary, or if a person working outside that boundary is at risk of inadvertently moving within it, the employer must ensure that any tools and equipment that the person uses that could make contact with the electrical conductor or circuit part are insulated. Arc flash boundary (5) Every employer must ensure that, if a person at a workplace under its control must work within an arc flash boundary identified under paragraph 142 (j), (a) that person has received training in the recognition and mitigation of arc flash hazards; (b) that person wears arc-rated personal protective equipment that is selected having regard to the information set out on the label referred to in paragraph 144 (1)(l); and (c) the work is constantly observed by an electrical safety watcher designated by the employer. Electrical safety watcher (6) Every employer must ensure that any electrical safety watcher whom it designates for the purpose of paragraph (3)(b) or (5)(c) (a) is knowledgeable of the hazards associated with the work; (b) is trained in methods of release and rescue and has the equipment necessary for carrying them out, including all personal protective equipment necessary for their own health and safety; (c) has first aid qualifications at least equivalent to a standard first aid certificate; (d) is knowledgeable in the procedures to be followed to obtain medical and other emergency assistance and is provided with a means of summoning that assistance without delay; (e) has the authority to immediately stop any part of the work that they consider dangerous; (f) warns the persons carrying out the work of the hazards associated with it; (g) remains in the area in which the work is being carried out for its duration; (h) ensures that all safety precautions and procedures are complied with; and (i) is free of any other duties that might interfere with their duties as a watcher.