HCFC-22 Production and H FC-23 Destruction Monitoring Checklist


HCFC-22 Production and HFC-23	&EFA

Destruction Monitoring Checklist

United States
Environmental Protection
Agency

Final Rule: Mandatory Reporting of Greenhouse Gases

What Must Be Monitored for HCFC-22 Production and HFC-23 Destruction Facilities?

To determine the annual mass of HFC-23 from each HCFC production
process, measure these parameters...

Where the mass flow of the combined stream of HFC-23 and another reaction product (e.g.,
hydrochloric acid [HC1]) is measured:	

~	Weekly or more frequent fraction	~ Number of concentration and flow
HFC-23 by weight in HFC-23/other measurement periods for the year
product stream (decimal)

~	Mass flow of HFC-23/other product
stream (kg)

Where the mass of only a reaction product other than HFC-23 (either HCFC-22 or HC1) is
measured:	

~	Weekly or more frequent fraction	~ Weekly or more frequent mass of

of HFC-23 by weight in HCFC-22/	HCFC-22 that is measured coming out of

HFC-23 stream (decimal)	the production process (kg)

~	Weekly or more frequent fraction of	~ Weekly or more frequent mass of used
HCFC-22 by weight in HCFC-22/ HCFC-22 that is added to the production
HFC-23 stream (decimal) process upstream of the output

measurement (kg)

~	Weekly or more frequent mass of	~ Number of concentration and mass
HCFC-22 produced measurement periods over the year

Note: If the other product is HC1, substitute HCl for HCFC-22 in the above measurements.

HCFC-22 Production and HFC-23 Destruction Monitoring Checklist
Greenhouse Gas Reporting Program

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40 CFR 98, subpart O
October 2010

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Measure these parameters if the HCFC-22 production process is not
connected to an HFC-23 destruction device...

~	Annual mass of HFC-23 generated
(metric tons)

~	Annual mass of HFC-23 sent off site for
sale, measured at least weekly
(metric tons)

~	Annual mass of HFC-23 sent off site for
destruction, measured at least weekly
(metric tons)

~	If the material sent off site for
destruction contains more than trace
concentrations of materials other than
HFC-23, measure the concentration
of HFC-23 at least weekly using a
method with an accuracy and precision
of 5 percent or better at the
concentrations of the process samples

~	Annual mass of HFC-23 destroyed on
site, measured at least weekly
(metric tons)

~	HFC-23 in storage at end of year
(metric tons)

~	HFC-23 in storage at beginning of year
(metric tons)

Measure these parameters if the HCFC-22 production process is connected to

an HFC-23 destruction device...

Estimate the annual mass of HFC-23 emitted from equipment leaks by measuring:

~	Fraction of HFC-23 by weight in the
stream(s) in the equipment (decimal)

~	Number of sources of each equipment
type and service type with screening
values greater than or equal to 10,000
ppmv

~	Number of sources of each equipment
type and service type with screening
values less than 10,000 ppmv

~	Number of hours during the year during
which equipment contained HFC-23
(hours)

HCFC-22 Production and HFC-23 Destruction Monitoring Checklist
Greenhouse Gas Reporting Program

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40 CFR 98, subpart O
October 2010

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Estimate the annual mass of HFC-23 emitted from process vents by measuring:

~	HFC-23 emission rate from the process	~
vents during the period of the most

recent test (test at least once every five
years, or after significant changes to the
process)(kg/hr)

~	HCFC-22 production rate during the	~
period (at least monthly) (kg/hr)

Estimate the annual mass of HFC-23 emitted from destruction device by measuring:

~	Annual mass of HFC-23 fed into the	~ Destruction efficiency of the destruction
destruction device, measured at least device

weekly (metric tons)

~	Annual mass of HFC-23 destroyed
(metric tons)

Other calculations include measuring...

~	Mass of each reactant fed into the	~ HFC-23 concentration at the outlet of
process (metric tons) the destruction device (mass fraction)

~	Mass of materials other than HCFC-22
and HFC-23 (i.e., unreacted reactants,

HC1, and other byproducts) that occur
in more than trace concentrations and
that are permanently removed from the
process (metric tons)

See also the information sheet for HCFC Production and HFC-23 Destruction at:
www.epa.gov/climatechange/emissions/downloads/infosheets/HCFC22Prod HFC23Destruc.pdf.

HCFC-22 production rate during the
most recent test period (at least monthly)
(kg/hr)

Length of period (hours)

HCFC-22 Production and HFC-23 Destruction Monitoring Checklist
Greenhouse Gas Reporting Program

Page 3 of 3

40 CFR 98, subpart O
October 2010

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