Generator set emissions for the Santiago Metropolitan Region are limited by the regulations defining particulate matter (PM) limits for stationary sources, Table 1. The limits apply to generator sets rated at 20 kW or more electrical output and must be met at rated conditions.
|Nominal Power, P||PM Limit||Application||Frequency of Certification|
|P < 300 kW||56 mg/Nm3||Continuous / Prime Power||Every 3 years|
|Emergency||Certification not required|
|P ≥ 300 kW||112 mg/Nm3||Continuous / Prime Power||Every 1 year|
|Emergency||Certification required only once|
In situations of poor ambient air quality, sources with PM emissions greater than 32 mg/Nm3 (28 mg/Nm3 if air quality is exceptionally bad) are not allowed to operate.
In November 2006, a draft regulation was published in Chile’s national gazette that would set emission limits in the Santiago Metropolitan Region for new and existing stand-by and emergency electricity generator sets of 20 kW or more electrical output, powered by internal combustion engines (Table 2). However, the final rule was never published and the proposal was abandoned.
|Application||Nominal Power, P||PM||NOx||CO||THC|
|Existing Generators||Prime Power||20 kW ≤ P < 300 kW||45||5,000||600||400|
|P ≥ 300 kW||5||5,000||600||400|
|Emergency||P ≥ 150 kW||180||-||-||-|
|New Generators||Prime Power||20 kW ≤ P < 300 kW||45||2,900||600||400|
|P ≥ 300 kW||5||2,900||600||400|
|Emergency||P ≥ 20 kW||75||2,900||600||400|
Emissions were to be measured at rated conditions, converted to standard conditions (25°C and 1 atm) and corrected to 5% O2 by volume.
Acknowledgement: This article based in part on information submitted by Marcelo M. Guerrero of ENAP.