Operating Parameters To Be Monitored and Minimum Measurement and Recording Frequencies

Operating parameters to be monitored Minimum frequency HMIWI Data measurement Data recording HMIWI with combustion control only HMIWI with dry scrubber followed by FF HMIWI with wet scrubber HMIWI with dry scrubber followed by FF and wet scrubber HMIWI with SNCR system Maximum operating parameters: Maximum charge rate Once per charge Once per charge ✓ ✓ ✓ ✓ ✓ Maximum FF inlet temperature Continuous Once per minute ✓ ✓ Maximum flue gas temperature Continuous Once per minute ✓ ✓ Minimum operating parameters: Minimum secondary chamber temperature Continuous Once per minute ✓ ✓ ✓ ✓ ✓ Minimum dioxin/furan sorbent flow rate Hourly Once per hour ✓ ✓ Minimum HCl sorbent flow rate Hourly Once per hour ✓ ✓ Minimum mercury (Hg) sorbent flow rate Hourly Once per hour ✓ ✓ Minimum pressure drop across the wet scrubber or minimum horsepower or amperage to wet scrubber Continuous Once per minute ✓ ✓ Minimum scrubber liquor flow rate Continuous Once per minute ✓ ✓ Minimum scrubber liquor pH Continuous Once per minute ✓ ✓ Minimum reagent flow rate Hourly Once per hour ✓ [78 FR 28076, May 13, 2013]