Patent ID: 8109759

Claim:
A method comprising: a) specifying a low compliant level of a regulated emission parameter that is below a maximum level permitted in compliance with a governmental regulation; b) generating exhaust in a preliminary mode by operating a reference combustion system with reactant flow rates that produce available heat; c) measuring the available heat generated in the preliminary mode; d) measuring the regulated emission parameter of the exhaust generated in the preliminary mode; e) identifying a low range of the measured available heat in which the measured emission parameter is not greater than the low compliant level; f) generating exhaust in an ordinary mode by operating a user combustion system with reactant flow rates that produce available heat in a target range above the low range; g) detecting an alarm condition during the ordinary mode; and h) while continuing to operate the user combustion system without a shut-down interruption, responding to the alarm condition by shifting the user combustion system from the ordinary mode to an assured compliance mode by reducing the available heat from within the target range to within the low range.