Regulation 336The manager of a mine shall ensure that(a) each steam boiler and all its fittings and attachments are thoroughly examined by a competent person(i) at least once in every period of twelve months; and(ii) after any extensive repairs, when the boiler is cold and when the boiler is under normal steam pressure;(b) each steam boiler is tested by water pressure at least once in every twenty-four months,(i) at the hydraulic testing pressure of five hundred and twenty kilo Pascal above the maximum permissible working pressure in a boiler in which the maximum permissible working pressure exceeds five hundred and twenty kilo Pascal, and(ii) at double the maximum permissible working pressure in the case of a boiler in which the maximum permissible working pressure does not exceed five hundred and twenty kilo Pascal;(c) a report of the result of each examination and test is entered in the Boiler Record Book kept at the mine specially for that purpose, and signed by the person who made the examination or test; and(d) the Boiler Record Book is open for inspection by an inspector.