Boiler MACT Energy Assessments Gene Taylor, P.E., C.M., Principal Consultant Iowa Office April 3, 2014
Apr 16, 2017
Boiler MACT Energy Assessments
Gene Taylor, P.E., C.M., Principal Consultant
Iowa Office
April 3, 2014
Energy Assessment Who & What˃ Who is required to conduct EA?
HAP major with existing boiler or process heater of any size & fuel that is not limited use (FEACF<10%)
HAP minor with existing coal, biomass, oil boiler >10 MMBtu/hr. that is not limited use (FEACF<10%)
Exempts facilities operating under ISO 50001 compatible EnMS, or post January 2008 EA, that includes affected units
˃ What is required? Scope & duration determined by firing capacity
♦ Site Visit (8-24 hrs., not to exceed 160 hrs.) Performed by Qualified Energy Assessor No report submittal but submit NOCS by due date Not required to implement any ECMs identified
˃ When is it required? Major sources (§63.7510(e)):
♦ Assessment and report due by:♦ Compliance date – January 31, 2016
Area sources (§63.11196(a)(3)):♦ Assessment and report due by:♦ Compliance date – March 21, 2014
˃ Submit certification of completion in Notice of Compliance Status (NOCS) NOCS due:
♦ 60 days after performance test for Major Sources♦ 60 days after perfor. test for Area Sources, if no
perfor. test required 120 days after compliance date (7/19/2014)
Energy Assessment - When
˃ Someone who has demonstrated capabilities to evaluate energy savings opportunities for steam generation and major energy using systems, including, but not limited to: Boiler combustion management Boiler thermal energy recovery, including
♦ Conventional feed water economizer, ♦ Conventional combustion air preheater, and ♦ Condensing economizer.
Boiler blowdown thermal energy recovery Primary energy resource selection, including
♦ Fuel (primary energy source) switching, and♦ Applied steam energy versus direct-fired energy versus
electricity Insulation issues Steam trap and steam leak management Condensate recovery Steam end-use management
Qualified Energy Assessor
Energy Assessment – QEA How˃ Visual inspection & testing of the
Boiler/heater system (comb., DA, economizers, blowdown, etc.)
Steam distribution system (piping, steam traps, insulation) Condensate return system (piping, insulation) End use systems (insulation, leaks, direct injection,
efficiency)˃ Evaluation of operating characteristics of
boiler/heater systems, energy use systems, O & M procedures, and unusual operating constraints
˃ Review of available architectural and engineering plans, facility operation and maintenance procedures and logs, and fuel usage
Energy Assessment – QEA Report˃ Comprehensive report detailing:
List of major energy conservation measures (ECMs) that are within the facility’s control
List of the energy savings potential of the ECMs identified ♦ How many Btu’s am I going to save?♦ How much $$ are those Btu’s worth?
Cost of specific improvements, benefits, and the simple payback for recouping those investments
Efficiency Credits Option˃ Option for meeting BMACT emission
limits in lieu of installing controls˃ Only for existing units at major sources˃ Take credit for equivalent emissions
reduction from implementing ECMs identified in EA to comply with emission limits
˃ Must elect to comply with output-based emission limits