Inlet Gas Conditions

1.9.3

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NOTE:

1. To properly apply their equipment, the

precipitator manufacturer must know the expected

inlet gas conditions. For new equipment this

information can be best supplied by the boiler

manufacturer, incinerator manufacturer, and

mechanical cyclone-type dust collector manufacturer.

2. In determining the inlet gas conditions for

existing installations, source testing should be

performed to determine the gas flow and contents.

Gas volume determinations should be made EPA Methods

1-4 in 40 CFR, Part 60, Appendix A. For particulate

size distribution an actual sample should be taken

and analyzed in accordance with ASME PTC 28,

"Determining the Properties of Fine Particulate

Matter." For particulate loading only, use EPA

Method 5 or 17.

3. For new installations, the inlet gas conditions

should be obtained from the manufacturer. If this

is not possible, the gas contents must be estimated.

When estimates are made, the emission factors and

handbook data should be taken from U.S.

Environmental Protection Agency Publication no.

AP-42, entitled "Compilation of Air Pollutant

Emission Factors," with the latest supplements.

Correction for expected combustible content should

be made. Source testing should be conducted in

accordance with the applicable portion of EPA 40 CFR

60, Appendix A or applicable local standard.

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NOTE: Supply excess air percentage for incinerator

applications.

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Provide electrostatic precipitator(s) for entire operating range of gas

conditions from the [boiler(s)] [incinerator(s)] [mechanical cyclone-type

dust collector] specified above. The electrostatic precipitator inlet gas

conditions shall be:

Maximum

Minimum

Peak

a.

Inlet gas volume, L/s

[_____]

b.

Inlet gas temperature,

degrees C

[_____]

c.

Inlet gas density,

kg per cubic meter

[_____]

d.

Inlet gas moisture,

percent by weight

[_____]

SECTION 15862N

Page 18