101Vapour recovery systems

101 Vapour recovery systems

101 Vapour recovery systems

(1) A vapour recovery system must recover the vapour emitted from loading operations by a process that prevents the total concentration of unrecovered vapour emitted into the atmosphere during a period of 4 hours exceeding—

(a) before 1 July 2027—110mg as n-propane per litre of volatile organic liquid passing into the tank during the 4-hour period, or

(b) on and from 1 July 2027—10mg as n-propane per litre of volatile organic liquid passing into the tank during the 4-hour period.

(2) The total concentration of unrecovered vapour must be determined in accordance with TM-20.

(3) It is a defence to an offence under section 76 for a failure to comply with this section if—

(a) the failure to comply is as result of the vapour recovery system being shut down for the purposes of scheduled maintenance, and

(b) the vapour system is not shut down for scheduled maintenance for more than 72 hours in a calendar year, and

(c) all practicable steps are taken to prevent or minimise the vapour emitted from loading operations while the vapour recovery system is shut down.