8. Any member or inspector of the Board, and any other person authorized by it, may, for the purposes of sections 2 to 7 and the regulations, inspect any conveyance system, distribution network, pipe, apparatus and piping used for the conveyance, distribution or consumption of gas and, for such purposes,
(a) enter upon any land and into any structure on all days except holidays, between 8:00 a.m. and 6:00 p.m. and, in cases of emergency, at any time;
(b) examine, test and verify any installation, apparatus and device hereinabove mentioned;
(c) make any inquiry deemed necessary to satisfy himself as to the observance of this Act and the regulations.