ObjectiveTo qualify packing style 2000IC for fugitive emissions in valves when subjected to thermal and mechanical cycles.
Leak detection method
“EPA method 21”.
Test Procedure
ARCO Fugitive Emission Test Specification.
Test Parameters
3 thermal cycles at room temperature and at 177ºC;
Leakage measurements are performed before and after each thermal cycle and at each 100 cycles of the shaft;
Test pressure: 645 psig (45 Kgf/cm2);
Test Fluid: Foxboro OVA128 (99% methane);
Maximum allowable leakage: 100 PPMv (if the leak allowed exceeds 100 PPMv, the sobreposta must be adjusted).
Conclusion
Packing 2000IC has successfully completed the test with 5 adjustments during the 3,500 cycles while maintaining leakage under 100 PPMv.
