English to Spanish Other Mining & Minerals / Gems salud y seguridad ocupacionales

78. (1) Subject to subsection (2), where repairs or alterations are to be made on a drum, tank, pipeline or other container, the drum, tank, pipeline or other container shall,
(a) have internal pressures adjusted to atmospheric before any fastening is removed;
(b) be drained and cleaned or otherwise rendered free from any explosive, flammable or harmful substance; and
(c) not be refilled while there is any risk of vaporising or igniting the substance that is being placed in the drum, tank, pipeline or other container.
(2) Clauses (1) (a) and (b) do not apply to a pipeline where hot-tapping and ***boxing-in*** are carried out by a competent person under controlled conditions so as to provide for the protection of all workers. R.R.O. 1990, Reg. 851, s. 78.