Sch 2 para 7 Provisions to ensure safe handling and operation
(1) The method of operation specified for pressure equipment must be such as to preclude any reasonably foreseeable risk in operation of the equipment, and particular attention must be paid, where appropriate, to— (a) closures and openings; (b) dangerous discharge of pressure relief blow-off; (c) devices to prevent physical access whilst pressure or a vacuum exists; (d) surface temperature taking into consideration the intended use; (e) decomposition of unstable fluids. (2) In particular, pressure equipment fitted with an access door must be equipped with an automatic or manual device enabling the user easily to ascertain that the opening will not present any risk, and where the opening can be operated quickly, the pressure equipment must be fitted with a device to prevent it being opened whenever the pressure or temperature of the fluid presents a risk.