54. In the cases determined by regulation, no employer or owner may undertake the construction of an establishment or alter its installations or equipment unless he has previously transmitted to the Commission the plans and specifications of an architect or engineer attesting to their conformity with the regulations, in accordance with the terms and conditions and within the time prescribed by regulation. A copy of the plans and specifications must be transmitted to the health and safety committee or, if there is no such committee, to the safety representative.