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<br /> <br /> Page 108 of 111 <br /> <br />Report No.: 2410B0143SHA-001 <br /> <br />TRF No. ANSI/CAN/UL 9540A_Unit <br /> <br />Attachment 11 Smoke release rate measurement <br /> <br />Smoke release rate shall be calculated as follows: <br /> Where: <br />SRR = Smoke release rate (m2/s) <br />V = Volumetric exhaust duct flow rate (m3/s) <br />D = duct diameter (m) <br />Io = Light transmission signal of clear (pre-test) beam (V) <br />I = Light transmission signal during test (V) <br /> <br />The smoke release rate measurement system was self-checked using calibrated light filter before test. The <br />self-check was performed at 75%, 25%, 10% light transmittance. <br /> <br />Peak smoke release rate SRR=0.0176 m2/s <br /> <br /> <br />Smoke release rate (SRR) versus time data curve <br /> <br />