Test Methods and Performance Specifications for Air Emission Sources; Correction, 15421-15423 [2021-05761]
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Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Rules and Regulations
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 60
[EPA–HQ–OAR–2018–0815; FRL 10018–97–
OAR]
RIN 2060–AU39
List of Subjects 40 CFR Part 60
Test Methods and Performance
Specifications for Air Emission
Sources; Correction
Environmental protection, Air
pollution control, Incorporation by
reference, Performance specifications,
Test methods and procedures.
Environmental Protection
Agency (EPA).
ACTION: Correcting amendments.
AGENCY:
The Environmental Protection
Agency (EPA) is correcting a final rule
that was published in the Federal
Register on October 7, 2020, and was
effective on December 7, 2020. The final
rule corrected and updated regulations
for source testing of emissions. This
correction does not change any final
action taken by the EPA on October 7,
2020; this action corrects the
amendatory instructions for Methods 4
and 5.
DATES: The correction is effective on
March 23, 2021.
ADDRESSES: The EPA has established a
docket for this action under Docket ID
No. EPA–HQ–OAR–2018–0815. All
documents in the docket are listed at
https://www.regulations.gov. Although
listed in the index, some information is
not publicly available, e.g., confidential
business information or other
information whose disclosure is
restricted by statute. Certain other
material, such as copyrighted material,
is not placed on the internet and will be
publicly available only in hard copy.
Publicly available docket materials are
available electronically through https://
www.regulations.gov.
SUMMARY:
Mrs.
Lula H. Melton, Office of Air Quality
Planning and Standards, Air Quality
Assessment Division (E143–02),
Environmental Protection Agency,
Research Triangle Park, NC 27711;
telephone number: (919) 541–2910; fax
number: (919) 541–0516; email address:
melton.lula@epa.gov.
SUPPLEMENTARY INFORMATION: In the
final rulemaking published in the
Federal Register on October 7, 2020 (85
FR 63394), there were some inadvertent
errors made to Methods 4 and 5 due to
unclear or incorrect amendatory
instruction. In this correction document,
we are clarifying and correcting the
amendatory instructions for ‘‘Appendix
A–3 to part 60’’ to correct the
inadvertent errors and incorporate the
revisions from the final rulemaking.
FOR FURTHER INFORMATION CONTACT:
VerDate Sep<11>2014
16:06 Mar 22, 2021
Jkt 253001
In Method 4, we are revising sections
8.1.3.1, 8.1.3.2, and adding sections
8.1.3.2.1, 8.1.3.2.2, 8.1.3.2.3, 8.1.3.2.4,
8.1.3.3, and 8.1.3.4. We are also revising
section 12.1.3.
In Method 5, we are revising sections
12.3, 12.11.1, 12.11.2, 16.1.1.4, and
16.2.3.3.
Joseph Goffman,
Acting Assistant Administrator, Office of Air
and Radiation.
Accordingly, 40 CFR part 60 is
corrected as follows:
PART 60—STANDARDS OF
PERFORMANCE FOR NEW
STATIONARY SOURCES
1. The authority citation for part 60
continues to read as follows:
■
Authority: 42 U.S.C. 7401 et seq.
2. Amend appendix A–3 to part 60 by:
a. In Method 4 by:
i. Revising sections ‘‘8.1.3.1’’ and
‘‘8.1.3.2’’;
■ ii. Adding sections ‘‘8.1.3.2.1’’,
‘‘8.1.3.2.2’’, ‘‘8.1.3.2.3’’, ‘‘8.1.3.2.4’’,
‘‘8.1.3.3’’, and ‘‘8.1.3.4’’; and
■ iii. Revising section ‘‘12.1.3’’; and
■ b. In Method 5 by revising sections
‘‘12.3’’, ‘‘12.11.1’’, ‘‘12.11.2’’, ‘‘16.1.1.4’’,
and ‘‘16.2.3.3’’.
The additions and revisions read as
follows:
■
■
■
Appendix A–3 to Part 60—Test
Methods 4 through 5I
*
*
*
*
*
Method 4—Determination of Moisture
Content in Stack Gases
*
*
*
*
*
8.1.3.1 Leak Check of Metering System
Shown in Figure 4–1. That portion of the
sampling train from the pump to the orifice
meter should be leak-checked prior to initial
use and after each shipment. Leakage after
the pump will result in less volume being
recorded than is actually sampled. The
following procedure is suggested (see Figure
5–2 of Method 5): Close the main valve on
the meter box. Insert a one-hole rubber
stopper with rubber tubing attached into the
orifice exhaust pipe. Disconnect and vent the
low side of the orifice manometer. Close off
the low side orifice tap. Pressurize the system
to 13 to 18 cm (5 to 7 in.) water column by
blowing into the rubber tubing. Pinch off the
tubing and observe the manometer for one
minute. A loss of pressure on the manometer
indicates a leak in the meter box; leaks, if
present, must be corrected. 8.1.3.2 Pretest
Leak Check. A pretest leak check of the
sampling train is recommended, but not
PO 00000
Frm 00025
Fmt 4700
Sfmt 4700
15421
required. If the pretest leak check is
conducted, the following procedure should
be used. 8.1.3.2.1 After the sampling train
has been assembled, turn on and set the filter
and probe heating systems to the desired
operating temperatures. Allow time for the
temperatures to stabilize. 8.1.3.2.2 Leakcheck the train by first plugging the inlet to
the filter holder and pulling a 380 mm (15
in.) Hg vacuum. Then connect the probe to
the train, and leak-check at approximately 25
mm (1 in.) Hg vacuum; alternatively, the
probe may be leak-checked with the rest of
the sampling train, in one step, at 380 mm
(15 in.) Hg vacuum. Leakage rates in excess
of 4 percent of the average sampling rate or
0.00057 m3/min (0.020 cfm), whichever is
less, are unacceptable. 8.1.3.2.3 Start the
pump with the bypass valve fully open and
the coarse adjust valve completely closed.
Partially open the coarse adjust valve, and
slowly close the bypass valve until the
desired vacuum is reached. Do not reverse
the direction of the bypass valve, as this will
cause water to back up into the filter holder.
If the desired vacuum is exceeded, either
leak-check at this higher vacuum, or end the
leak check and start over. 8.1.3.2.4 When the
leak check is completed, first slowly remove
the plug from the inlet to the probe, filter
holder, and immediately turn off the vacuum
pump. This prevents the water in the
impingers from being forced backward into
the filter holder and the silica gel from being
entrained backward into the third impinger.
8.1.3.3 Leak Checks During Sample Run. If,
during the sampling run, a component (e.g.,
filter assembly or impinger) change becomes
necessary, a leak check shall be conducted
immediately before the change is made. The
leak check shall be done according to the
procedure outlined in section 8.1.3.2, except
that it shall be done at a vacuum equal to or
greater than the maximum value recorded up
to that point in the test. If the leakage rate
is found to be no greater than 0.00057 m3/
min (0.020 cfm) or 4 percent of the average
sampling rate (whichever is less), the results
are acceptable, and no correction will need
to be applied to the total volume of dry gas
metered; if, however, a higher leakage rate is
obtained, either record the leakage rate and
plan to correct the sample volume as shown
in section 12.3 of Method 5, or void the
sample run.
Note: Immediately after component
changes, leak checks are optional. If such
leak checks are done, the procedure outlined
in section 8.1.3.2 should be used.
8.1.3.4 Post-Test Leak Check. A leak
check of the sampling train is
mandatory at the conclusion of each
sampling run. The leak check shall be
performed in accordance with the
procedures outlined in section 8.1.3.2,
except that it shall be conducted at a
vacuum equal to or greater than the
maximum value reached during the
sampling run. If the leakage rate is
found to be no greater than 0.00057 m3
min (0.020 cfm) or 4 percent of the
average sampling rate (whichever is
less), the results are acceptable, and no
correction need be applied to the total
E:\FR\FM\23MRR1.SGM
23MRR1
15422
Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Rules and Regulations
volume of dry gas metered. If, however,
a higher leakage rate is obtained, either
record the leakage rate and correct the
sample volume as shown in section 12.3
of Method 5 or void the sampling run.
*
*
*
*
*
12.1.3 Volume of Water Collected in
Silica Gel.
Where:
K3 = 0.001335 m3/g for metric units =
0.04716 ft3/g for English units.
Method 5—Determination of Particulate
Matter Emissions From Stationary
Sources
*
*
12.3 Dry Gas Volume. Correct the
sample volume measured by the dry gas
meter to standard conditions (20 °C,
760mm Hg or 68 °F, 29.92 in. Hg) by
using Equation 5–1.
*
*
*
V,
_
m(std) -
Where:
K1 = 0.38572 °K/mm Hg for metric units =
17.636 °R/in. Hg for English units.
Note: Equation 5–1 can be used as written
unless the leakage rate observed during any
of the mandatory leak checks (i.e., the posttest leak check or leak checks conducted
and substitute only for those leakage
rates (Li or Lp) which exceed La.
*
*
*
*
*
*
*
!:iH)
ll Y T std (P bar+ 13.6
m
T p
Eq. 5 - 1
m std
prior to component changes) exceeds La. If Lp
or Li exceeds La, Equation 5–1 must be
modified as follows:
(a) Case I. No component changes
made during sampling run. In this case,
replace Vm in Equation 5–1 with the
expression:
(Vm ¥ (Lp ¥ La)q)
(b) Case II. One or more component
changes made during the sampling run.
In this case, replace Vm in Equation 5–
1 by the expression:
12.11.1 Calculation from Raw Data.
= 0.002668 ((in. Hg)(ft3))/((ml)(°R)) for
English units.
12.11.2 Calculation from Intermediate
Values.
VerDate Sep<11>2014
16:06 Mar 22, 2021
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PO 00000
Frm 00026
Fmt 4700
Sfmt 4700
E:\FR\FM\23MRR1.SGM
23MRR1
ER23MR21.004</GPH>
ER23MR21.005</GPH>
ER23MR21.006</GPH>
Where:
K4 = 0.003456 ((mm Hg)(m3))/((ml)(°K)) for
metric units,
*
ER23MR21.008</GPH>
*
ER23MR21.007</GPH>
*
Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Rules and Regulations
Where:
K5 = 4.3209 for metric units = 0.09450 for
English units.
*
*
*
*
16.1.1.4 Calculate flow rate, Q, for
each run using the wet test meter
volume, Vw, and the run time, q.
Calculate the DGM coefficient, Yds, for
*
Yds
Where:
K1 = 0.38572 °K/mm Hg for metric units =
17.636 °R/in. Hg for English units.
Vw = Wet test meter volume, liter (ft3).
Vds = Dry gas meter volume, liter (ft3).
Tds = Average dry gas meter temperature, °C
(°F).
=
Vw(Td 5 +Tstd)Pbartl
v ds(Tw+Tstd)(Pbar+ 1;6)
=
K 1 Vm[Pbar+(~)]
Tm
- K'
Vcr(std) -
Pbar0
.Jr
amb
Pbar 8
Y=--
each run. These calculations are as
follows:
Eq. 5-10
Tadj = 273.15 °C for metric units = 459.67 °F
for English units.
Tw = Average wet test meter temperature, °C
(°F).
Pbar = Barometric pressure, mm Hg (in. Hg).
Dp = Dry gas meter inlet differential pressure,
mm H2O (in. H2O).
Vm(std)
15423
q = Run time, min.
*
*
*
*
*
16.2.3.3 Calculate the standard
volumes of air passed through the DGM
and the critical orifices, and calculate
the DGM calibration factor, Y, using the
equations below:
Eq. 5-12
Eq. 5-13
Eq. 5-14
*
*
BILLING CODE 6560–50–P
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
42 CFR Part 51c
RIN 0906–AB25
Implementation of Executive Order on
Access to Affordable Life-Saving
Medications; Final Rule; Delay of
Effective Date
Health Resources and Services
Administration (HRSA), Department of
Health and Human Services (HHS).
ACTION: Final rule; delay of effective
date.
AGENCY:
This final rule implements a
further delay until July 20, 2021, of the
SUMMARY:
VerDate Sep<11>2014
16:06 Mar 22, 2021
Jkt 253001
As of March 22, 2021, the
effective date of the final rule published
at 85 FR 83822 (December 23, 2020),
which was delayed at 86 FR 7059
DATES:
PO 00000
Frm 00027
Fmt 4700
Sfmt 4700
I. Public Participation
On March 9, 2021, the Office of the
Federal Register placed a HHS notice of
proposed rulemaking (NPRM) on file for
public inspection. This NPRM was
published in the Federal Register on
March 11, 2021, proposing to further
delay, until July 20, 2021, the effective
date of the rule entitled
‘‘Implementation of Executive Order on
Access to Affordable Life-saving
Medications’’ published in the Federal
Register on December 23, 2020. The
comment period closed on March 14,
2021, with HHS receiving 198
comments on the proposed delay.
Section 553(d) of the Administrative
Procedure Act (APA) (5 U.S.C. 551 et
E:\FR\FM\23MRR1.SGM
23MRR1
ER23MR21.012</GPH>
*
ER23MR21.011</GPH>
*
[FR Doc. 2021–05761 Filed 3–22–21; 8:45 am]
(January 26, 2021), is further delayed
until July 20, 2021.
FOR FURTHER INFORMATION CONTACT:
Jennifer Joseph, Director, Office of
Policy and Program Development,
Bureau of Primary Health Care, HRSA,
5600 Fishers Lane, Rockville, MD
20857; by email at jjoseph@hrsa.gov;
telephone: 301–594–4300; fax: 301–
594–4997.
SUPPLEMENTARY INFORMATION:
ER23MR21.010</GPH>
*
effective date of the rule entitled
‘‘Implementation of Executive Order on
Access to Affordable Life-saving
Medications’’ published in the Federal
Register on December 23, 2020. This
rule was scheduled to take effect on
March 22, 2021, after a delay from its
original effective date of January 22,
2021. HHS is delaying the effective date
of the rule to July 20, 2021, to ensure
that implementation of the rule does not
impede HHS’s and health centers’
immediate priority work, on a
nationwide basis, of responding to and
mitigating the spread of COVID–19,
including ensuring widespread and
equitable access to COVID–19 vaccines,
and maintaining the delivery of
comprehensive primary health services
to medically underserved populations,
while considering how to address
administrative/implementation issues
raised by commenters and further
address comments regarding the impact
of the rule.
ER23MR21.009</GPH>
Where:
Vcr(std) = Volume of gas sample passed
through the critical orifice, corrected to
standard conditions, dscm (dscf).
K1 = 0.38572 °K/mm Hg for metric units =
17.636 °R/in. Hg for English units.
ER23MR21.013</GPH>
Vmcstd)
]]>Agencies
[Federal Register Volume 86, Number 54 (Tuesday, March 23, 2021)]
[Rules and Regulations]
[Pages 15421-15423]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-05761]
[[Page 15421]]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 60
[EPA-HQ-OAR-2018-0815; FRL 10018-97-OAR]
RIN 2060-AU39
Test Methods and Performance Specifications for Air Emission
Sources; Correction
AGENCY: Environmental Protection Agency (EPA).
ACTION: Correcting amendments.
-----------------------------------------------------------------------
SUMMARY: The Environmental Protection Agency (EPA) is correcting a
final rule that was published in the Federal Register on October 7,
2020, and was effective on December 7, 2020. The final rule corrected
and updated regulations for source testing of emissions. This
correction does not change any final action taken by the EPA on October
7, 2020; this action corrects the amendatory instructions for Methods 4
and 5.
DATES: The correction is effective on March 23, 2021.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-HQ-OAR-2018-0815. All documents in the docket are
listed at https://www.regulations.gov. Although listed in the index,
some information is not publicly available, e.g., confidential business
information or other information whose disclosure is restricted by
statute. Certain other material, such as copyrighted material, is not
placed on the internet and will be publicly available only in hard
copy. Publicly available docket materials are available electronically
through https://www.regulations.gov.
FOR FURTHER INFORMATION CONTACT: Mrs. Lula H. Melton, Office of Air
Quality Planning and Standards, Air Quality Assessment Division (E143-
02), Environmental Protection Agency, Research Triangle Park, NC 27711;
telephone number: (919) 541-2910; fax number: (919) 541-0516; email
address: [email protected].
SUPPLEMENTARY INFORMATION: In the final rulemaking published in the
Federal Register on October 7, 2020 (85 FR 63394), there were some
inadvertent errors made to Methods 4 and 5 due to unclear or incorrect
amendatory instruction. In this correction document, we are clarifying
and correcting the amendatory instructions for ``Appendix A-3 to part
60'' to correct the inadvertent errors and incorporate the revisions
from the final rulemaking.
In Method 4, we are revising sections 8.1.3.1, 8.1.3.2, and adding
sections 8.1.3.2.1, 8.1.3.2.2, 8.1.3.2.3, 8.1.3.2.4, 8.1.3.3, and
8.1.3.4. We are also revising section 12.1.3.
In Method 5, we are revising sections 12.3, 12.11.1, 12.11.2,
16.1.1.4, and 16.2.3.3.
List of Subjects 40 CFR Part 60
Environmental protection, Air pollution control, Incorporation by
reference, Performance specifications, Test methods and procedures.
Joseph Goffman,
Acting Assistant Administrator, Office of Air and Radiation.
Accordingly, 40 CFR part 60 is corrected as follows:
PART 60--STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES
0
1. The authority citation for part 60 continues to read as follows:
Authority: 42 U.S.C. 7401 et seq.
0
2. Amend appendix A-3 to part 60 by:
0
a. In Method 4 by:
0
i. Revising sections ``8.1.3.1'' and ``8.1.3.2'';
0
ii. Adding sections ``8.1.3.2.1'', ``8.1.3.2.2'', ``8.1.3.2.3'',
``8.1.3.2.4'', ``8.1.3.3'', and ``8.1.3.4''; and
0
iii. Revising section ``12.1.3''; and
0
b. In Method 5 by revising sections ``12.3'', ``12.11.1'', ``12.11.2'',
``16.1.1.4'', and ``16.2.3.3''.
The additions and revisions read as follows:
Appendix A-3 to Part 60--Test Methods 4 through 5I
* * * * *
Method 4--Determination of Moisture Content in Stack Gases
* * * * *
8.1.3.1 Leak Check of Metering System Shown in Figure 4-1. That
portion of the sampling train from the pump to the orifice meter
should be leak-checked prior to initial use and after each shipment.
Leakage after the pump will result in less volume being recorded
than is actually sampled. The following procedure is suggested (see
Figure 5-2 of Method 5): Close the main valve on the meter box.
Insert a one-hole rubber stopper with rubber tubing attached into
the orifice exhaust pipe. Disconnect and vent the low side of the
orifice manometer. Close off the low side orifice tap. Pressurize
the system to 13 to 18 cm (5 to 7 in.) water column by blowing into
the rubber tubing. Pinch off the tubing and observe the manometer
for one minute. A loss of pressure on the manometer indicates a leak
in the meter box; leaks, if present, must be corrected. 8.1.3.2
Pretest Leak Check. A pretest leak check of the sampling train is
recommended, but not required. If the pretest leak check is
conducted, the following procedure should be used. 8.1.3.2.1 After
the sampling train has been assembled, turn on and set the filter
and probe heating systems to the desired operating temperatures.
Allow time for the temperatures to stabilize. 8.1.3.2.2 Leak-check
the train by first plugging the inlet to the filter holder and
pulling a 380 mm (15 in.) Hg vacuum. Then connect the probe to the
train, and leak-check at approximately 25 mm (1 in.) Hg vacuum;
alternatively, the probe may be leak-checked with the rest of the
sampling train, in one step, at 380 mm (15 in.) Hg vacuum. Leakage
rates in excess of 4 percent of the average sampling rate or 0.00057
m\3\/min (0.020 cfm), whichever is less, are unacceptable. 8.1.3.2.3
Start the pump with the bypass valve fully open and the coarse
adjust valve completely closed. Partially open the coarse adjust
valve, and slowly close the bypass valve until the desired vacuum is
reached. Do not reverse the direction of the bypass valve, as this
will cause water to back up into the filter holder. If the desired
vacuum is exceeded, either leak-check at this higher vacuum, or end
the leak check and start over. 8.1.3.2.4 When the leak check is
completed, first slowly remove the plug from the inlet to the probe,
filter holder, and immediately turn off the vacuum pump. This
prevents the water in the impingers from being forced backward into
the filter holder and the silica gel from being entrained backward
into the third impinger. 8.1.3.3 Leak Checks During Sample Run. If,
during the sampling run, a component (e.g., filter assembly or
impinger) change becomes necessary, a leak check shall be conducted
immediately before the change is made. The leak check shall be done
according to the procedure outlined in section 8.1.3.2, except that
it shall be done at a vacuum equal to or greater than the maximum
value recorded up to that point in the test. If the leakage rate is
found to be no greater than 0.00057 m\3\/min (0.020 cfm) or 4
percent of the average sampling rate (whichever is less), the
results are acceptable, and no correction will need to be applied to
the total volume of dry gas metered; if, however, a higher leakage
rate is obtained, either record the leakage rate and plan to correct
the sample volume as shown in section 12.3 of Method 5, or void the
sample run.
Note: Immediately after component changes, leak checks are
optional. If such leak checks are done, the procedure outlined in
section 8.1.3.2 should be used.
8.1.3.4 Post-Test Leak Check. A leak check of the sampling train is
mandatory at the conclusion of each sampling run. The leak check shall
be performed in accordance with the procedures outlined in section
8.1.3.2, except that it shall be conducted at a vacuum equal to or
greater than the maximum value reached during the sampling run. If the
leakage rate is found to be no greater than 0.00057 m\3\ min (0.020
cfm) or 4 percent of the average sampling rate (whichever is less), the
results are acceptable, and no correction need be applied to the total
[[Page 15422]]
volume of dry gas metered. If, however, a higher leakage rate is
obtained, either record the leakage rate and correct the sample volume
as shown in section 12.3 of Method 5 or void the sampling run.
* * * * *
12.1.3 Volume of Water Collected in Silica Gel.
[GRAPHIC] [TIFF OMITTED] TR23MR21.004
Where:
K3 = 0.001335 m\3\/g for metric units = 0.04716 ft\3\/g
for English units.
* * * * *
Method 5--Determination of Particulate Matter Emissions From Stationary
Sources
* * * * *
12.3 Dry Gas Volume. Correct the sample volume measured by the dry
gas meter to standard conditions (20 [deg]C, 760mm Hg or 68 [deg]F,
29.92 in. Hg) by using Equation 5-1.
[GRAPHIC] [TIFF OMITTED] TR23MR21.005
Where:
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
Note: Equation 5-1 can be used as written unless the leakage
rate observed during any of the mandatory leak checks (i.e., the
post-test leak check or leak checks conducted prior to component
changes) exceeds La. If Lp or Li
exceeds La, Equation 5-1 must be modified as follows:
(a) Case I. No component changes made during sampling run. In this
case, replace Vm in Equation 5-1 with the expression:
(Vm - (Lp - La)[thetas])
(b) Case II. One or more component changes made during the sampling
run. In this case, replace Vm in Equation 5-1 by the expression:
[GRAPHIC] [TIFF OMITTED] TR23MR21.006
and substitute only for those leakage rates (Li or
Lp) which exceed La.
* * * * *
12.11.1 Calculation from Raw Data.
[GRAPHIC] [TIFF OMITTED] TR23MR21.007
Where:
K4 = 0.003456 ((mm Hg)(m\3\))/((ml)([deg]K)) for metric
units,
= 0.002668 ((in. Hg)(ft\3\))/((ml)([deg]R)) for English units.
12.11.2 Calculation from Intermediate Values.
[GRAPHIC] [TIFF OMITTED] TR23MR21.008
[[Page 15423]]
Where:
K5 = 4.3209 for metric units = 0.09450 for English
units.
* * * * *
16.1.1.4 Calculate flow rate, Q, for each run using the wet test
meter volume, Vw, and the run time, [thgr]. Calculate the
DGM coefficient, Yds, for each run. These calculations are
as follows:
[GRAPHIC] [TIFF OMITTED] TR23MR21.009
[GRAPHIC] [TIFF OMITTED] TR23MR21.010
Where:
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
Vw = Wet test meter volume, liter (ft3).
Vds = Dry gas meter volume, liter (ft3).
Tds = Average dry gas meter temperature, [deg]C ([deg]F).
Tadj = 273.15 [deg]C for metric units = 459.67 [deg]F for
English units.
Tw = Average wet test meter temperature, [deg]C ([deg]F).
Pbar = Barometric pressure, mm Hg (in. Hg).
[Delta]p = Dry gas meter inlet differential pressure, mm
H2O (in. H2O).
[thgr] = Run time, min.
* * * * *
16.2.3.3 Calculate the standard volumes of air passed through the
DGM and the critical orifices, and calculate the DGM calibration
factor, Y, using the equations below:
[GRAPHIC] [TIFF OMITTED] TR23MR21.011
[GRAPHIC] [TIFF OMITTED] TR23MR21.012
[GRAPHIC] [TIFF OMITTED] TR23MR21.013
Where:
Vcr(std) = Volume of gas sample passed through the
critical orifice, corrected to standard conditions, dscm (dscf).
K1 = 0.38572 [deg]K/mm Hg for metric units = 17.636
[deg]R/in. Hg for English units.
* * * * *
[FR Doc. 2021-05761 Filed 3-22-21; 8:45 am]
BILLING CODE 6560-50-P
