Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 240 - MOBILE SOURCES
Subpart F - EVAPORATIVE TEST STANDARDS
Section 240.172 - Evaporative System Integrity Test Standards
Current through Register Vol. 48, No. 38, September 20, 2024
Vehicles subject to evaporative system integrity testing shall fail the evaporative system integrity test if one of the following occurs:
a) Fuel Cap Pressure Decay Standards - While tested using the fuel cap pressure decay tester, the pressure decays by 6 inches of water or more during a 10 second period after being pressurized to 28 ±1 inches of water column;
b) Fuel Cap Leak Flow Test Standards - While tested using the fuel cap leak flow tester, the fuel cap leak flow rate exceeds 60 cc/min at a pressure of 30 ±1 inches of water column. Determination will be made by comparing the fuel cap's measured leak flow rate with the flow rate obtained from a calibrated master orifice with a National Institute of Standards and Technology traceable flow rate which will result in a pass/fail flow rate threshold of 60 cc/min of air at 30 ±1 inches of water column;
c) Visual Functional Test Standards - While tested using the visual functional test, an inspection of the fuel cap reveals one or more of the following: