Q-2, r. 4.1 - Clean Air Regulation

Section 139 Disposition versions

2012-09-01

139. The operator of an aluminum smelter must install, on each potline gas scrubber, a continuous gas measuring and recording system that enables the operation of the scrubber to be verified at any time.

The system,

(1)  in the case of a wet scrubber,

(a)  must continuously measure and record gas pressure loss through the scrubber using a differential pressure gauge accurate to within 0.5 kPa;

(b)  must continuously measure and record the flow and scrubbing liquid pressure, measured at the delivery pipe inlet using a pressure gauge accurate to within 10% of rated pressure in that delivery pipe; and

(c)  must continuously measure and record scrubbing liquid pH using a device accurate to within 20%; and

(2)  in the case of a dry scrubber, must have a continuous leak and malfunction detection and recording device.

In addition, every scrubber of emissions from an anode baking furnace must have a continuous leak and malfunction detection and recording device.

Subparagraph 2 of the second paragraph applies to dry scrubbers of an existing aluminum smelter as of 30 June 2012.

O.C. 501-2011, s. 139.