Get smart on greenhouseflare gas flow
measurement and service
Metering for compliance to EPA 40 CFR Mandatory
reporting of greenhouse gases; final rule

Mandatory reporting of greenhouse gases(GHGs): Final rule
The Consolidated Appropriations Act (FY2008), signed on
December 26, 2007, authorized the EPA to develop and enacta final rule, not later than 18 months after the date of the Act,to require mandatory reporting of greenhouse gas emissions
above appropriate thresholds in all sectors of the economy of
the United States. The final rule applies to fossil fuel suppliers,industrial gas suppliers, and direct greenhouse gas emitters.
The rule requires reporting of annual emissions primarily ofcarbon dioxide (CO2), methane (CH4), nitrous oxide (N2O),and others. It also includes provisions to ensure the accuracyof emissions data through monitoring, record keeping andverification requirements.
In general, the rule requires direct measurement of emissions
from certain units that already are required to report datausing CEMS under other programs (e.g., ARP, NSPS, NESHAP,
and State Implementation Plans). In some cases, this may
require upgrading existing CEMS that currently monitor criteria
pollutants to also monitor CO2 or add a volumetric flow meter.
The data collected by the rule will be used in analyzing anddeveloping a range of potential CAA GHG policies, programs
and actions that facilities could take to reduce emissions.
Facilities must begin collecting data on January 1, 2010. The firstannual GHG report is due on March 31, 2011, for GHGs emitted.

The requirements for flare gas
For flare gas, the industries affected and requirements
are found in two Subparts of the rule 40CFR Part 98 for
Stationary Sources:X. Petrochemical production
This source category consists of all processes that produce
acrylonitrile, carbon black, ethylene, ethylene dichloride,ethylene oxide, or methanol (with certain exceptions).
Process emissions also include CO2, CH4 and N2O emissions
generated by combustion of off-gas from the process instationary combustion units and flares. For some of theGHG emission calculation and monitoring options, Subpart
X references procedures in 40 CFR Part 98, Subpart Y, forcalculating emissions from flares specified in section 98.253.
Y. Petroleum refineries
A petroleum refinery is any facility engaged in producing
gasoline, gasoline blending stocks, naphtha, kerosene, distillate
fuel oils, residual fuel oils, lubricants, or asphalt (bitumen)
through distillation of petroleum or through redistillation,
cracking, or reforming of unfinished petroleum derivatives.
Under 40 CFR Part 98, Subpart Y, petroleum refineries must
calculate CO2, CH4 and N2O emissions from flares using thegas flow rate (either measured with a continuous flow meter or
calculated using engineering calculations) and, either weekly
measured carbon content of the flare gas, or weekly measured
heat content of the flare gas and use an emission factor.

Requirements for flare gas flow measurementin petrochemical production andpetroleum refineries
From section 98.253, “Calculating GHG Emissions”
For the flow monitor on the flare, you use the measured flow
rates when the meter is operational and the flow rate iswithin the calibrated range of the measurement device tocalculate the flare gas flow. (If you do not have a flow meteron the flare and for periods when the meter is not operationalor the flow rate is outside the range of the meter, you mustuse engineering calculations, company records, or similar
estimates of volumetric flare gas flow.)
From section 98.254, “Monitoring and QA/QC Requirements”
For flare or sour gas flow meters, operate and maintain theflow meter using any of the following methods: a method
published by a consensus-based standards organization(e.g., ASTM, API, etc.) or follow the procedures specified by theflow meter manufacturer.

Our experience in flare gas metering
A world leader in measurement solutions, Panametrics’ flow
pedigree spans 45 years of expertise. For flare gas, the GF868
has been proven as a superior performer in this typicallyharsh environment. We have flare installations at hundredsof locations throughout Texas, Louisiana and California, andthousands more at other refineries and petrochemical plants
across the globe.
Along with the GF868, other Panametrics flow meters canhelp you with additional flow measurements required for
GHG monitoring.
Our products also come with the peace of mind that aPanametrics guarantee brings. We stand behind our products
to ensure that you get the quality you expect.

Flow meters must have a rated accuracy of+/- 5 percent or lower.

GF868 flare meter technology puts youin compliance
The DigitalFlow™ GF868 flare gas flow meter meets thespecified accuracy rating and is designed for flare gas
applications—for new installations or retrofits. It measuresvelocity, volume and mass flow rate, and provides averagemolecular weight of hydrocarbon gases. The GF868 has one
or two channels of measurement to allow for two paths on
one pipe or even two pipes with the same meter.
The GF868 offers distinct advantages over other methods offlare gas flow measurement and solves a variety of difficult
problems, such as pulsating pressure, unsteady flow rates,and varying gas composition and temperature. Measurement
to very highest or very lowest flow rates is done over pipe
sizes from four to 120 inches.
The GF868 also capitalizes on the inherent advantages ofultrasonic flow measurement—reliability, low maintenance,high accuracy, fast response and wide rangeability.

We’re at your service
Complying with the GHG regulation takes more than an
accurate flow meter. We have the procedures, basedon API 14.10, as required. From evaluating site data forrecommendation on an installation to fieldcommissioning a new meter or inspecting and certifying
existing installations, our applications engineering andfield services teams have the expertise and regulatory
knowledge to guide you.

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02/2020