New Energy Assessment Requirements under the Boiler MACT



The U.S. EPA released the final rules for boilers located at area (Subpart JJJJJJ) and major (Subpart DDDDD) sources on February 1, 2013 and January 31, 2013, respectively. Energy assessments are required for affected sources subject to the rules as follows:

  • Area Sources – existing coal, biomass or oil units with ratings ≥ 10 MMBTU/hr
  • Major sources – all existing units

Area sources must meet the requirements of the energy assessment no later than March 21, 2014. The compliance date for major sources is January 31, 2016.

The energy assessment is required not only for the boiler system, but also for major energy use systems consuming energy from affected boilers. The extent of energy use systems that must be evaluated as part of an energy assessment will depend on the total annual heat input capacity of affected boilers at the facility. For example, an energy assessment conducted at a facility with a total annual input capacity of 0.55 TBTU/yr (trillion BTU per year) must include affected boilers and any end-use systems for which energy usage accounts for 33% of the total boiler energy production.

In terms of the boiler, the assessment will focus on the four typical components of a steam production and delivery system:

  • Generation (boiler)
  • Distribution (piping, manifolds, insulation)
  • End-Use (process, turbines, motors, drives)
  • Recovery (condensate return, traps, etc.)

During a boiler energy assessment, the following parameters (among other) will be evaluated:

  • Operational parameters (stack temperature, feedwater, blowdowns)
  • Combustion data (CEMS, performance tests, excess air)
  • Fuel usage (at least 2 years)
  • Insulation (condition, losses)
  • Operations and Maintenance (traps, condensate return, tune-ups)

At the end of the assessment process, a report will be prepared identifying energy conservation measures and opportunities, and establishing costs and simple payback on investments, compared to potential energy savings.

For major sources interested in pursuing the use of efficiency credits, the energy assessment will include the establishment of a baseline or benchmark for future comparison with the results the energy conservation measures selected by the facility.

What to do next? 

The countdown has begun!  When evaluating the next steps for your facility, focus first on any initial notifications, permit updates, and energy management program needs.  Next, prepare a plan to meet the energy assessment deadlines, and procure any external assistance if required.

For more information, call your nearest Trinity office for assistance with your Boiler MACT Energy Assessment at 800-229-6655, sign up for our complimentary Boiler MACT Energy Assessments webinar, or attend one of our all-day Boiler MACT Energy Assessments Workshops (upcoming in Dallas and Philadelphia).