Indiana agency ready to approve air projects at Petersburg coal plant

The Indiana Office of Air Quality (OAQ) is taking comment until April 3 on a tenative air approval of a major air permit change requested by Indianapolis Power & Light that covers some new air emissions controls for the coal-fired Petersburg Generating Station.

The air permit change covers:

  • the addition of one filter fabric baghouse, identified as BH-2, constructed in 2015, which will serve boiler Unit 2;
  • the addition of one filter fabric baghouse, identified as BH-3, constructed in 2015, which will serve boiler Unit 3;
  • the incorporation of requirements of of federal NESHAP standards for Coal and Oil-Fired Electric Utility Steam Generating Units for the four boilers identified as Unit 1, Unit 2, Unit 3, and Unit 4;
  • the installation of pollution control devices on each of these boilers, and
  • modifications to monitoring requirements including the replacement of continuous opacity monitoring (COM) systems on boiler Units 1, 2, 3, and 4, with continuous emissions monitoring (CEMS) for particulate matter (PM).

The Petersburg units are:

  • One coal/No. 2 fuel oil fired boiler, identified as Unit 1, constructed prior to 1967, with a design capacity of 2,200 MMBtu per hour. Unit 1 uses an electrostatic precipitator, FGD scrubber (installed in 1996), activated carbon injection installed in 2014, and low-NOX burners (installed in 1995) for NOX reduction.
  • One coal/No. 2 fuel oil fired boiler, identified as Unit 2, constructed prior to 1969, with a design capacity of 4,144 MMBtu per hour. Unit 2 uses a baghouse installed in 2014, an electrostatic precipitator, FGD scrubber (installed in 1996), activated carbon injection installed in 2014, selective catalytic reduction (installed in 2004) and low NOX burners for NOX reduction.
  • One coal/No. 2 fuel oil fired boiler, identified as Unit 3, constructed prior to 1977, with a design capacity of 5,540 MMBtu per hour. Unit 3 uses an electrostatic precipitator, which will be replaced by a baghouse permitted in 2013, activated carbon injection (ACI) installed in 2014, selective catalytic reduction (installed in 2004) and an FGD scrubber.
  • One coal/No. 2 fuel oil fired boiler (Unit 4), on which construction began in 1978 and which began operation in 1986, with a design capacity of 5,550 MMBtu per hour. Unit 4 uses an electrostatic precipitator, FGD scrubber, activated carbon injection (ACI) installed in 2014, and low-NOX burners (installed in 2001) for NOX reduction.
About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.