# Design capability

Design capability defined in section 103(7) of FUA, shall be determined as follows:

(1) Boiler and associated generator turbines. The design fuel heat input rate of a steam-electric generating unit (Btu/hr) shall be the product of the generator's nameplate rating, measured in kilowatts, and 3412 (Btu/kWh), divided by the overall boiler-turbine-generator unit design efficiency (decimal); or if the generator's nameplate does not have a rating measured in kilowatts, the product of the generator's kilovolt-amperes nameplate rating, and the power factor nameplate rating; and 3412 (Btu/kWh), divided by the boiler turbine-generator unit's design efficiency (decimal). (The number 3412 converts kilowatt-hours (absolute) into Btu's (mean).)

(2) Combustion turbine and associated generator. The design fuel heat input rate of a combustion turbine (Btu/hr) shall be the product of its nameplate rating, measured in kilowatts, and 3412 (Btu/kWh), divided by the combustion turbine-generator unit's design efficiency (decimal), adjusted for peaking service at an ambient temperature of 59 degrees Fahrenheit (15 degrees Celsius) at the unit's elevation. (The number 3412 converts kilowatt-hours (absolute) into Btu's (mean).)

(3) Combined cycle unit. The design fuel heat input rate of a combined cycle unit (Btu/hr) shall be the summation of the product of its generator's nameplate rating, measured in kilowatts, and 3412 (Btu/kWh), divided by the overall combustion turbine-generator unit's efficiency (decimal), adjusted for peaking service at an ambient temperature of 59 degrees Fahrenheit (15 degrees Celsius) and at the unit's evaluation, plus the product of the maximum fuel heat input to any supplemental heat recovery steam generator/boiler in gallons or pounds per hour and the fuel's heat content. If the generator's nameplate does not have a rating measured in kilowatts, the product of the generator's kilowatt-amperes nameplate rating and power factor nameplate rating must be substituted for kilowatts. (The number 3412 converts kilowatt-hours (absolute) into Btu's (mean).)

## Source

10 CFR § 500.2

## Scoping language

For purposes of this part and parts 501507 term: