Singapore legislation
Regulation 24
Regulation 24
Duties of authorised high voltage switching engineer before commencement of work
Subregulation 1
An authorised high voltage switching engineer shall ensure that no work is carried out on any high voltage apparatus or part thereof unless —
every part of such apparatus on which work is to be carried out is —
dead;
isolated and locked from live conductors;
discharged and effectively connected to Earth at all points of connection of supply of electricity to it or between such points and the points of work;
effectively screened off from all live parts to prevent danger; and
generally safe for work to be carried out thereon;
a notice warning against any interference with live apparatus, in a form approved by the Authority, is affixed at every point where such apparatus can be made live;
a notice in accordance with regulation 17(5) is affixed at a conspicuous position of every part of the high voltage apparatus on which work is not to be carried out; and
where work is to be carried out by one or more competent persons, he has issued a permit-to-work to every competent person and each competent person has read, understood and signed all copies of the permit-to-work issued to him.
Subregulation 2
The authorised high voltage switching engineer shall retain one copy of every permit-to-work referred to in paragraph (1)(d) signed by him and every competent person appointed to carry out the work.
Subregulation 3
No person shall move or remove anything set up to screen off the high voltage apparatus or any part thereof under paragraph (1)(a)(iv), or any of the notices referred to in paragraph (1)(b) and (c), except by or with the consent of and under the supervision of the authorised high voltage switching engineer.
Subregulation 4
The keys of all safety locks shall be kept by the authorised high voltage switching engineer during the course of the work.