Air Quality Management District (AQMD) Rule 1147 – Nitrogen Oxide Reductions from Combustion Sources “applies to various types of equipment which burn fuel, such as ovens, dryers, dehydrators, heaters…and other combustion equipment which release nitrogen oxide (NOx) emissions due to burning of fuel and which require an AQMD permit but are not specifically required to comply with a NOx emission control or limit by District Regulation XI rules. Effective Jan 1, 2010, owners and operators of all Rule 1147 units will be required to:
- perform combustion system maintenance in accordance with the manufacturer’s schedule and specifications as identified in the manual and other written materials supplied by the manufacturer or distributor, and
- maintain on site at the facility where the unit is operated a copy of the manufacturer’s or distributor’s written instructions, retain records of the maintenance activity for a period of not less than three years, and retain emission test records on site, and
- maintain on each unit a permanent rating plate in an accessible location.
- Remove the requirements for installation of time meters
- Remove the requirements for installation of non-resettable totalizing fuel meters if the operator intend to comply with the Rule 1147 NOx emission limits in parts per million (ppm), but still require the fuel meters if the operator intends to comply with the NOx emission limits in pounds per million British Thermal Units (lb/mmBTU)
- Extend deadlines for demonstrating compliance with the early phases of NOx emission limits by approx one year