EPC MATS Environmental Controls Construction Project

Petersburg Units 1-4 Joint Venture Project


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EPC MATS Environmental Controls Construction Project
Petersburg, Indiana
Client: Indianapolis Power & Light Company (IPL), a subsidiary of The AES Corporation
Fuel: Indiana bituminous (pulverized) coal
Size: Units range from 232-MW to 545-MW


Project Description:

In January 2013, Indiana Environmental Partners (IEP), the project joint venture of Sargent & Lundy and Kiewit Power Constructors, entered an engineering, procurement, construction (EPC) contract agreement with IPL to engineer, procure, construct, and commission the environmental controls construction project (ECCP) for Petersburg Units 1-4.

IPL initiated the ECCP to comply with the Environmental Protection Agency’s (EPAs) Utility Mercury and Air Toxics Standards Rule (MATS Rule), which established plant emission limits for mercury (Hg), filterable particulate matter (PM), and acid gases (HCl). The new controls are expected to reduce Hg emissions by approximately 80%.

The IEP scope of work for the environmental retrofits by unit consisted of:

  • Unit 1 – Electrostatic precipitator (ESP) upgrades and new activated carbon injection (ACI), sodium bisulfite (SBS), and calcium bromide (CaBr) injection systems
  • Unit 2 – New pulse jet fabric filter (PJFF) and new ACI, SBS, and CaBr injection systems
  • Unit 3 – New PJFF, ESP upgrades and new ACI, SBS, and CaBr injection systems
  • Unit 4 – ESP upgrades and new ACI, SBS, and CaBr injection systems

Sargent & Lundy’s scope of work encompassed procurement, detailed design, startup and commissioning support, training, operations and maintenance (O&M) manuals, and performance testing coordination and engineering support during the extended warranty period.

On December 22, 2017, IEP came to successful project closure with the conclusion of the warranty obligation. This four-year project was completed on time and under budget. All 13 schedule guarantees and 20 performance guarantees were satisfied within the contract-guaranteed dates and performance criteria with no liquidated damages assessed.


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