METHOD
303-DETERMINATION OF VISIBLE EMISSIONS FROM
BY-PRODUCT COKE
OVEN BATTERIES
NOTE: This method is not inclusive with respect to
observer certification. Some material is incorporated by reference from other
methods in appendix A to 40 CFR part 60. Therefore, to obtain reliable results,
persons using this method should have a thorough knowledge of Method 9.
3.2 By-product Coke
Oven Battery
6.0 Equipment and
Supplies. [Reserved]
7.0 Reagents and
Standards. [Reserved]
8.0 Sample Collection,
Preservation, Transport, and Storage. [Reserved]
9.0 Quality Control.
[Reserved]
10.0 Calibration and
Standardization.
10.1 Certification
Procedures.
10.2 Observer
Certification/Recertification.
11.1 Procedure for
Determining VE from Charging Systems During Charging.
11.1.1 Number of Oven
Charges.
11.1.8 Determination of
Validity of a Set of Observations.
11.2. Procedure for
Determining VE from Coke Oven Door Areas.
11.2.4 Criteria for
Acceptance.
11.3 Procedure for
Determining VE from Topside Port Lids and Off-take Systems.
11.3.3 Topside Port Lid
Observations.
11.3.4 Off-take Systems
Observations.
11.3.5 Criteria for
Acceptance.
11.3.6 Determining
Leakage Percent
11.3.7 Percent Leaking
Topside Port Lids and Off-take Systems.
11.4 Procedure for
Determining VE from Collecting Mains.
11.4.3 Collecting Main
Pressure Check.
12.0 Data Analysis and
Calculations.
12.2 Criteria for
Acceptance for VE Determinations from Coke Oven Door Areas.
12.3 Criteria for
Acceptance for VE Determinations from Topside Port Lids and Off-take Systems.
12.4 Average Duration
of VE from Charging Operations.
12.5 Percent Leaking
Doors (PLD).
13.0 Method
Performance. [Reserved]
14.0 Pollution
Prevention. [Reserved]
15.0 Waste Management.
[Reserved]
17.0 Tables, Diagrams,
Flowcharts, and Validation Data.
1.0 Scope and Application.
1.1 Applicability.
This method is applicable for the determination of visible emissions (VE) from
the following by-product coke oven battery sources: charging systems during
charging; doors, topside port lids, and off-take systems on operating coke
ovens; and collecting mains. This method is also applicable for qualifying
observers for visually determining the presence of VE.
2.0 Summary of Method.
2.1 A certified
observer visually determines the VE from coke oven battery sources.
Certification procedures are presented. This method does not require that
opacity of emissions be determined or that magnitude be differentiated.
3.0 Definitions.
3.1 Bench
Means the platform
structure in front of the oven doors.
3.2 By-product Coke Oven Battery
Means a source
consisting of a group of ovens connected by common walls, where coal undergoes
destructive distillation under positive pressure to produce coke and coke oven
gas, from which byproducts are recovered.
3.3 Charge or charging period
Means the period of
time that commences when coal begins to flow into an oven through a topside
port and ends when the last charging port is recapped.
3.4 Charging system
Means an apparatus
used to charge coal to a coke oven (e.g., a larry car for wet coal charging systems).
3.5 Coke oven door
Means each end
enclosure on the push side and the coking side of an oven. The chuck, or
leveler-bar, door is considered part of the push side door. The coke oven door
area includes the entire area on the vertical face of a coke oven between the
bench and the top of the battery between two adjacent buck stays.
3.6 Coke side
Means the side of a
battery from which the coke is discharged from ovens at the end of the coking
cycle.
3.7 Collecting main
Means any apparatus
that is connected to one or more off-take systems and that provides a passage
for conveying gases under positive pressure from the by-product coke oven
battery to the by-product recovery system.
3.8 Consecutive charges
Means charges
observed successively, excluding any charge during which the observer's view of
the charging system or topside ports is obscured.
3.9 Damper-off
Means to close off
the gas passage between the coke oven and the collecting main, with no flow of
raw coke oven gas from the collecting main into the oven or into the oven's
off-take system(s).
3.10 Decarbonization period
Means the period of
time for combusting oven carbon that commences when the oven lids are removed
from an empty oven or when standpipe caps of an oven are opened. The period
ends with the initiation of the next charging period for that oven.
3.11 Larry car
Means an apparatus
used to charge coal to a coke oven with a wet coal charging system.
3.12 Log average
Means logarithmic
average as calculated in Section 12.4.
3.13 Off-take system
Means any individual
oven apparatus that is stationary and provides a passage for gases from an oven
to a coke oven battery collecting main or to another oven. Off-take system
components include the standpipe and standpipe caps, goosenecks, stationary
jumper pipes, mini-standpipes, and standpipe and gooseneck connections.
3.14 Operating oven
Means any oven not
out of operation for rebuild or maintenance work extensive enough to require
the oven to be skipped in the charging sequence.
3.15 Oven
Means a chamber in
the coke oven battery in which coal undergoes destructive distillation to
produce coke.
3.16 Push side
Means the side of the
battery from which the coke is pushed from ovens at the end of the coking
cycle.
3.17 Run
Means the observation
of visible emissions from topside port lids, off-take systems, coke oven doors,
or the charging of a single oven in accordance with this method.
3.18 Shed
Means an enclosure
that covers the side of the coke oven battery, captures emissions from pushing
operations and from leaking coke oven doors on the coke side or push side of
the coke oven battery, and routes the emissions to a control device or system.
3.19 Standpipe cap
Means An apparatus
used to cover the opening in the gooseneck of an off-take system.
3.20 Topside port lid
Means a cover,
removed during charging or decarbonizing, that is placed over the opening
through which coal can be charged into the oven of a byproduct coke oven
battery.
3.21 Traverse time
Means accumulated
time for a traverse as measured by a stopwatch. Traverse time includes time to
stop and write down oven numbers but excludes time waiting for obstructions of
view to clear or for time to walk around obstacles.
3.22 Visible Emissions or VE
Means any emission
seen by the unaided (except for corrective lenses) eye, excluding steam or
condensing water.
4.0 Interferences. [Reserved]
5.0 Safety.
5.1 Disclaimer.
This method may
involve hazardous materials, operations, and equipment. This test method may
not address all of the safety problems associated with its use. It is the
responsibility of the user of this test method to establish appropriate safety
and health practices and determine the applicability of regulatory limitations
prior to performing
this test method.
5.2 Safety Training.
Because coke oven
batteries have hazardous environments, the training materials and the field
training (Section 10.0) shall cover the precautions required by the company to
address health and safety hazards. Special emphasis shall be given to the
Occupational Safety and Health Administration (OSHA) regulations pertaining to
exposure of coke oven workers (see Reference 3 in Section 16.0). In general,
the regulation requires that special fire-retardant clothing and respirators be
worn in certain restricted areas of the coke oven battery. The OSHA regulation
also prohibits certain activities, such as chewing gum, smoking, and eating in
these areas.
6.0 Equipment and Supplies. [Reserved]
7.0 Reagents and Standards. [Reserved]
8.0 Sample Collection, Preservation, Transport, and Storage. [Reserved]
9.0 Quality Control. [Reserved]
10.0 Calibration and Standardization.
Observer
certification and training requirements areas follows:
10.1 Certification Procedures.
This method requires
only the determination of whether VE occur and does not require the
determination of opacity levels; therefore, observer certification according to
Method 9 in appendix A to part 60 of this chapter is not required to obtain
certification under this method. However, in order to receive Method 303
observer certification, the first-time observer (trainee) shall have attended
the lecture portion of the Method 9 certification course. In addition, the
trainee shall successfully complete the Method 303 training course, satisfy the
field observation requirement, and demonstrate adequate performance and
sufficient knowledge of Method 303. The Method 303 training course shall be
conducted by or under the sanction of the EPA and shall consist of classroom
instruction and field observations, and a proficiency test.
10.1.1 The classroom
instruction shall familiarize the trainees with Method 303 through lecture,
written training materials, and a Method 303 demonstration video. A successful
completion of the classroom portion of the Method 303 training course shall be
demonstrated by a perfect score on a written test. If the trainee fails to
answer all of the questions correctly, the trainee may review the appropriate
portion of the training materials and retake the test.
10.1.2 The field
observations shall be a minimum of 12 hours and shall be completed before
attending the Method 303 certification course. Trainees shall observe the
operation of a coke oven battery as it pertains to Method 303, including
topside operations, and shall also practice conducting Method 303 or similar
methods. During the field observations, trainees unfamiliar with coke battery
operations shall receive instruction from an experienced coke oven observer familiar
with Method 303 or similar methods and with the operation of coke batteries.
The trainee must verify completion of at least 12 hours of field observation
prior to attending the Method 303 certification course.
10.1.3 All trainees
must demonstrate proficiency in the application of Method 303 to a panel of
three certified Method 303 observers, including an ability to differentiate
coke oven emissions from condensing water vapor and smoldering coal. Each panel
member shall have at least 120 days experience in reading visible emissions
from coke ovens. The visible emissions inspections that will satisfy the
experience requirement must be inspections of coke oven battery fugitive
emissions from the emission points subject to emission standards under subpart L
of this part (i.e., coke
oven doors, topside port lids, off-take system(s), and charging operations),
using either Method 303 or predecessor State or local test methods. A
"day's experience" for a particular inspection is a day on which one
complete inspection was performed for that emission point under Method 303 or a
predecessor State or local method. A "day's experience" does not mean
8 or 10 hours performing inspections, or any particular time expressed in
minutes or hours that may have been spent performing them. Thus, it would be
possible for an individual to qualify as a Method 303 panel member for some
emission points, but not others (e.g., an individual might satisfy the experience requirement for coke
oven doors, but not topside port lids).
Until November 15,
1994, the EPA may waive the certification requirement (but not the experience
requirement) for panel members. The composition of the panel shall be approved
by the EPA. The panel shall observe the trainee in a series of training runs
and a series of certification runs. There shall be a minimum of 1 training run
for doors, topside port lids, and off-take systems, and a minimum of 5 training
runs (i.e., 5 charges) for
charging. During training runs, the panel can advise the trainee on proper procedures.
There shall be a minimum of 3 certification runs for doors, topside port lids,
and off-take systems, and a minimum of 15 certification runs for charging (i.e., 15 charges). The certifications runs shall be
unassisted. Following the certification test runs, the panel shall approve or
disapprove certification based on the trainee's performance during the
certification runs. To obtain certification, the trainee shall demonstrate to
the satisfaction of the panel a high degree of proficiency in performing Method
303. To aid in evaluating the trainee's performance, a checklist, provided by
the EPA, will be used by the panel members.
10.2 Observer Certification/Recertification.
The coke oven
observer certification is valid for 1 year from date of issue. The observer
shall recertify annually by viewing the training video and answering all of the
questions on the certification test correctly. Every 3 years, an observer shall
be required to pass the proficiency test in Section 10.1.3 in order to be
certified.
10.3 The EPA.
The EPA (or
applicable enforcement agency) shall maintain records reflecting a certified
observer's successful completion of the proficiency test, which shall include
the completed proficiency test checklists for the certification runs.
10.4 An owner or operator
An owner or operator
of a coke oven battery subject to subpart L of this part may observe a training
and certification program under this section.
11.0 Procedure.
11.1 Procedure for Determining VE from Charging Systems During Charging.
11.1.1 Number of Oven Charges.
Refer to ¤
63.309(c)(1) of this part for the number of oven charges to observe. The
observer shall observe consecutive charges. Charges that are nonconsecutive can
only be observed when necessary to replace observations terminated prior to the
completion of a charge because of visual interferences. (See Section 11.1.5).
11.1.2 Data Records.
Record all the
information requested at the top of the charging system inspection sheet
(Figure 303-1). For each charge, record the identification number of the oven
being charged, the approximate beginning time of the charge, and the
identification of the larry car used for the charge.
11.1.3 Observer Position.
Stand in an area or
move to positions on the topside of the coke oven battery with an unobstructed
view of the entire charging system. For wet coal charging systems or
non-pipeline coal charging systems, the observer should have an unobstructed
view of the emission points of the charging system, including larry car hoppers,
drop sleeves, and the topside ports of the oven being charged. Some charging
systems are configured so that all emission points can only be seen from a
distance of five ovens. For other batteries, distances of 8 to 12 ovens are
adequate.
11.1.4 Observation.
The charging period
begins when coal begins to flow into the oven and ends when the last charging
port is recapped. During the charging period, observe all of the potential
sources of VE from the entire charging system. For wet coal charging systems or
non-pipeline coal charging systems, sources of VE typically include the larry
car hoppers, drop sleeves, slide gates, and topside ports on the oven being
charged. Any VE from an open standpipe cap on the oven being charged is
included as charging VE.
11.1.4.1 Using an
accumulative-type stopwatch with unit divisions of at least 0.5 seconds,
determine the total time VE are observed as follows. Upon observing any VE
emerging from any part of the charging system, start the stopwatch. Stop the
watch when VE are no longer observed emerging, and restart the watch when VE
reemerges.
11.1.4.2 When VE
occur simultaneously from several points during a charge, consider the sources
as one. Time overlapping VE as continuous VE. Time single puffs of VE only for
the time it takes for the puff to emerge from the charging system. Continue to
time VE in this manner for the entire charging period. Record the accumulated
time to the nearest 0.5 second under "Visible emissions, seconds" on
Figure 303-1.
11.1.5 Visual Interference.
If fugitive VE from
other sources at the coke oven battery site (e.g., door leaks or condensing water vapor from the
coke oven wharf) prevent a clear view of the charging system during a charge,
stop the stopwatch and make an appropriate notation under "Comments"
on Figure 303-1. Label the observation an observation of an incomplete charge,
and observe another charge to fulfill the requirements of Section 11.1.1.
11.1.6 VE Exemptions.
Do not time the
following VE:
11.1.6.1 The VE from
burning or smoldering coal spilled on top of the oven, topside port lid, or
larry car surfaces;
NOTE: The VE from smoldering coal are generally white
or gray. These VE generally have a plume of less than 1 meter long. If the
observer cannot safely and with reasonable confidence determine that VE are
from charging, do not count them as charging emissions.
11.1.6.2 The VE from
the coke oven doors or from the leveler bar; or
11.1.6.3 The VE that
drift from the top of a larry car hopper if the emissions had already been
timed as VE from the drop sleeve.
NOTE: When the slide gate on a larry car hopper closes
after the coal has been added to the oven, the seal may not be airtight. On
occasions, a puff of smoke observed at the drop sleeves is forced past the
slide gate up into the larry car hopper and may drift from the top; time these
VE either at the drop sleeves or the hopper. If the larry car hopper does not
have a slide gate or the slide gate is left open or partially closed, VE may
quickly pass through the larry car hopper without being observed at the drop
sleeves and will appear as a strong surge of smoke; time these as charging VE.
11.1.7 Total Time Record.
Record the total time
that VE were observed for each charging operation in the appropriate column on
the charging system inspection sheet.
11.1.8 Determination of Validity of a Set of Observations.
Five charging
observations (runs) obtained in accordance with this method shall be considered
a valid set of observations for that day. No observation of an incomplete
charge shall be included in a daily set of observations that is lower than the
lowest reading for a complete charge. If both complete and incomplete charges
have been observed, the daily set of observations shall include the five
highest values observed. Four or three charging observations (runs) obtained in
accordance with this method shall be considered a valid set of charging
observations only where it is not possible to obtain five charging
observations, because visual interferences (see Section 11.1.5) or inclement
weather prevent a clear view of the charging system during charging. However,
observations from three or four charges that satisfy these requirements shall
not be considered a valid set of charging observations if use of such set of observations
in a calculation under Section 12.4 would cause the value of A to be less than
145.
11.1.9 Log Average.
For each day on which
a valid daily set of observations is obtained, calculate the daily 30-day
rolling log average of seconds of visible emissions from the charging operation
for each battery using these data and the 29 previous valid daily sets of
observations, in accordance with Section 12.4.
11.2. Procedure for Determining VE from Coke Oven Door Areas.
The intent of this
procedure is to determine VE from coke oven door areas by carefully observing
the door area from a standard distance while walking at a normal pace.
11.2.1 Number of Runs.
Refer to ¤
63.309(c)(1) of this part for the appropriate number of runs.
11.2.2 Battery Traverse.
To conduct a battery
traverse, walk the length of the battery on the outside of the pusher machine
and quench car tracks at a steady, normal walking pace, pausing to make
appropriate entries on the door area inspection sheet (Figure 303-2). A single
test run consists of two timed traverses, one for the coke side and one for the
push side. The walking pace shall be such that the duration of the traverse
does not exceed an average of 4 seconds per oven door, excluding time spent
moving around stationary obstructions or waiting for other obstructions to move
from positions blocking the view of a series of doors. Extra time is allowed
for each leak (a maximum of 10 additional seconds for each leaking door) for
the observer to make the proper notation. A walking pace of 3 seconds per oven
door has been found to be typical. Record the actual traverse time with a
stopwatch.
11.2.2.1 Include in
the traverse time only the time spent observing the doors and recording door
leaks. To measure actual traverse time, use an accumulative-type stopwatch with
unit divisions of 0.5 seconds or less. Exclude interruptions to the traverse
and time required for the observer to move to positions where the view of the
battery is unobstructed, or for obstructions, such as the door machine, to move
from positions blocking the view of a series of doors.
11.2.2.2 Various
situations may arise that will prevent the observer from viewing a door or a
series of doors. Prior to the door inspection, the owner or operator may elect
to temporarily suspend charging operations for the duration of the inspection,
so that all of the doors can be viewed by the observer. The observer has two
options for dealing with obstructions to view: (a) stop the stopwatch and wait
for the equipment to move or the fugitive emissions to dissipate before
completing the traverse; or (b) stop the stopwatch, skip the affected ovens,
and move to an unobstructed position to continue the traverse. Restart the
stopwatch and continue the traverse. After the completion of the traverse, if
the equipment has moved or the fugitive emissions have dissipated, inspect the
affected doors. If the equipment is still preventing the observer from viewing
the doors, then the affected doors may be counted as not observed. If option
(b) is used because of doors blocked by machines during charging operations,
then, of the affected doors, exclude the door from the most recently charged
oven from the inspection. Record the oven numbers and make an appropriate
notation under "Comments" on the door area inspection sheet (Figure
303-2).
11.2.2.3 When
batteries have sheds to control emissions, conduct the inspection from outside
the shed unless the doors cannot be adequately viewed. In this case, conduct
the inspection from the bench. Be aware of special safety considerations
pertinent to walking on the bench and follow the instructions of company
personnel on the required equipment and procedures. If possible, conduct the
bench traverse whenever the bench is clear of the door machine and hot coke guide.
11.2.3 Observations.
Record all the
information requested at the top of the door area inspection sheet (Figure
303-2), including the number of non-operating ovens. Record the clock time at
the start of the traverse on each side of the battery. Record which side is
being inspected (i.e., coke
side or push side). Other information may be recorded at the discretion of the
observer, such as the location of the leak (e.g., top of the door, chuck door, etc.), the reason
for any interruption of the traverse, or the position of the sun relative to
the battery and sky conditions (e.g., overcast, partly sunny, etc.).
11.2.3.1 Begin the
test run by starting the stopwatch and traversing either the coke side or the
push side of the battery. After completing one side, stop the watch. Complete
this procedure on the other side. If inspecting more than one battery, the
observer may view the push sides and the coke sides sequentially.
11.2.3.2 During the
traverse, look around the entire perimeter of each oven door. The door is
considered leaking if VE are detected in the coke oven door area. The coke oven
door area includes the entire area on the vertical face of a coke oven between
the bench and the top of the battery between two adjacent buck stays (e.g., the oven door, chuck door, between the masonry
brick, buck stay or jamb, or other sources). Record the oven number and make
the appropriate notation on the door area inspection sheet (Figure 303-2).
NOTE: Multiple VE from the same door area (e.g., VE from both the chuck door and the push side
door) are counted as only one emitting door, not as multiple emitting doors.
11.2.3.3 Do not
record the following sources as door area VE:
11.2.3.3.1 VE from
ovens with doors removed. Record the oven number and make an appropriate
notation under "Comments;"
11.2.3.3.2 VE from
ovens taken out of service. The owner or operator shall notify the observer as
to which ovens are out of service. Record the oven number and make an
appropriate notation under "Comments;" or
11.2.3.3.3 VE from
hot coke that has been spilled on the bench as a result of pushing.
11.2.4 Criteria for Acceptance.
After completing the
run, calculate the maximum time allowed to observe the ovens using the equation
in Section 12.2. If the total traverse time exceeds T, void the run, and
conduct another run to satisfy the requirements of ¤63.309(c)(1) of this part.
11.2.5 Percent Leaking Doors.
For each day on which
a valid observation is obtained, calculate the daily 30-day rolling average for
each battery using these data and the 29 previous valid daily observations, in
accordance with Section 12.5.
11.3 Procedure for Determining VE from Topside Port Lids and Off-take Systems.
11.3.1 Number of Runs.
Refer to ¤
63.309(c)(1) of this part for the number of runs to be conducted. Simultaneous
runs or separate runs for the topside port lids and off-take systems may be
conducted.
11.3.2 Battery Traverse.
To conduct a topside
traverse of the battery, walk the length of the battery at a steady, normal
walking pace, pausing only to make appropriate entries on the topside
inspection sheet (Figure 303-3). The walking pace shall not exceed an average
rate of 4 seconds per oven, excluding time spent moving around stationary
obstructions or waiting for other obstructions to move from positions blocking
the view. Extra time is allowed for each leak for the observer to make the
proper notation. A walking pace of 3 seconds per oven is typical. Record the
actual traverse time with a stopwatch.
11.3.3 Topside Port Lid Observations.
To observe lids of
the ovens involved in the charging operation, the observer shall wait to view
the lids until approximately 5 minutes after the completion of the charge.
Record all the information requested on the topside inspection sheet (Figure
303-3). Record the clock time when traverses begin and end. If the observer's
view is obstructed during the traverse (e.g., steam from the coke wharf, larry car, etc.),
follow the guidelines given in Section 11.2.2.2.
11.3.3.1 To perform a
test run, conduct a single traverse on the topside of the battery. The observer
shall walk near the center of the battery but may deviate from this path to
avoid safety hazards (such as open or closed charging ports, luting buckets,
lid removal bars, and topside port lids that have been removed) and any other
obstacles. Upon noting VE from the topside port lid(s) of an oven, record the
oven number and port number, then resume the traverse. If any oven is
dampered-off from the collecting main for decarbonization, note this under
"Comments" for that particular oven.
NOTE: Count the number of topside ports, not the
number of points, exhibiting VE, i.e., if a topside port has several points of VE, count this as one
port exhibiting VE.
11.3.3.2 Do not count
the following as topside port lid VE:
11.3.3.2.1 VE from
between the brickwork and oven lid casing or VE from cracks in the oven
brickwork. Note these VE under "Comments;"
11.3.3.2.2 VE from
topside ports involved in a charging operation. Record the oven number, and make
an appropriate notation (e.g.,
not observed because ports open for charging) under "Comments;"
11.3.3.2.3 Topside
ports having maintenance work done. Record the oven number and make an
appropriate notation under "Comments;" or
11.3.3.2.4 Condensing
water from wet-sealing material. Ports with only visible condensing water from
wet-sealing material are counted as observed but not as having VE.
11.3.3.2.5 Visible
emissions from the flue inspection ports and caps.
11.3.4 Off-take Systems Observations.
To perform a test
run, traverse the battery as in Section 11.3.3.1. Look ahead and back two to
four ovens to get a clear view of the entire off-take system for each oven.
Consider visible emissions from the following points as off-take system VE: (a)
the flange between the gooseneck and collecting main ("saddle"), (b)
the junction point of the standpipe and oven ("standpipe base"), (c)
the other parts of the off-take system (e.g., the standpipe cap), and (d) the junction
points with ovens and flanges of jumper pipes.
11.3.4.1 Do not stray
from the traverse line in order to get a "closer look" at any part of
the off-take system unless it is to distinguish leaks from interferences from
other sources or to avoid obstacles.
11.3.4.2 If the
centerline does not provide a clear view of the entire off-take system for each
oven (e.g., when standpipes
are longer than 15 feet), the observer may conduct the traverse farther from
(rather than closer to) the off-take systems.
11.3.4.3 Upon noting
a leak from an off-take system during a traverse, record the oven number.
Resume the traverse. If the oven is dampered-off from the collecting main for
decarbonization and VE are observed, note this under "Comments" for
that particular oven.
11.3.4.4 If any part
or parts of an off-take system have VE, count it as one emitting off-take
system. Each stationary jumper pipe is considered a single off-take system.
11.3.4.5 Do not count
standpipe caps open for a decarbonization period or standpipes of an oven being
charged as source of off-take system VE. Record the oven number and write
"Not observed" and the reason (i.e., decarb or charging) under
"Comments."
NOTE: VE from open standpipes of an oven being charged
count as charging emissions. All VE from closed standpipe caps count as
off-take leaks.
11.3.5 Criteria for Acceptance.
After completing the
run (allow 2 traverses for batteries with double mains), calculate the maximum
time allowed to observe the topside port lids and/or off-take systems using the
equation in Section 12.3. If the total traverse time exceeds T, void the run
and conduct another run to satisfy the requirements of ¤ 63.309(c)(1) of this
part.
11.3.6 Determining Leakage Percent
In determining the
percent leaking topside port lids and percent leaking off-take systems, do not
include topside port lids or off-take systems with VE from the following ovens:
11.3.6.1 Empty ovens,
including ovens undergoing maintenance, which are properly dampered off from
the main.
11.3.6.2 Ovens being
charged or being pushed.
11.3.6.3 Up to 3 full
ovens that have been dampered off from the main prior to pushing.
11.3.6.4 Up to 3
additional full ovens in the pushing sequence that have been dampered off from
the main for off-take system cleaning, for decarbonization, for safety reasons,
or when a charging/pushing schedule involves widely separated ovens (e.g., a Marquard system); or that have been dampered
off from the main for maintenance near the end of the coking cycle. Examples of
reasons that ovens are dampered off for safety reasons are to avoid exposing
workers in areas with insufficient clearance between standpipes and the larry
car, or in areas where workers could be exposed to flames or hot gases from
open standpipes, and to avoid the potential for removing a door on an oven that
is not dampered off from the main.
11.3.7 Percent Leaking Topside Port Lids and Off-take Systems.
For each day on which
a valid observation is obtained, calculate the daily 30-day rolling average for
each battery using these data and the 29 previous valid daily observations, in
accordance with Sections 12.6 and 12.7.
11.4 Procedure for Determining VE from Collecting Mains.
11.4.1 Traverse.
To perform a test
run, traverse both the collecting main catwalk and the battery topside along
the side closest to the collecting main. If the battery has a double main,
conduct two sets of traverses for each run, i.e., one set for each main.
11.4.2 Data Recording.
Upon noting VE from
any portion of a collection main, identify the source and approximate location
of the source of VE and record the time under "Collecting main" on
Figure 303-3; then resume the traverse.
11.4.3 Collecting Main Pressure Check.
After the completion
of the door traverse, the topside port lids, and off-take systems, compare the
collecting main pressure during the inspection to the collecting main pressure
during the previous 8 to 24 hours. Record the following: (a) the pressure
during inspection, (b) presence of pressure deviation from normal operations,
and (c) the explanation for any pressure deviation from normal operations, if
any, offered by the operators. The owner or operator of the coke battery shall
maintain the pressure recording equipment and conduct the quality
assurance/quality control (QA/QC) necessary to ensure reliable pressure
readings and shall keep the QA/QC records for at least 6 months. The observer
may periodically check the QA/QC records to determine their completeness. The
owner or operator shall provide access to the records within 1 hour of an
observer's request.
12.0 Data Analysis and Calculations.
12.1 Nomenclature.
A = 150 or the number
of valid observations (runs). The value of A shall not be less than 145, except
for purposes of determinations under ¤63.306(c) [work practice plan
implementation] or ¤63.306(d) [work practice plan revisions] of this part. No
set of observations shall be considered valid for such a recalculation that
otherwise would not be considered a valid set of observations for a calculation
under this paragraph.
Di = Number of doors on non-operating ovens.
Dno = Number of doors not observed.
Dob = Total number of doors observed on operating
ovens.
Dt = Total number of oven doors on the battery.
e = 2.72
J = Number of
stationary jumper pipes.
L = Number of doors
with VE.
Lb = Yard-equivalent reading.
Ls = Number of doors with VE observed from the bench under sheds.
Ly = Number of doors with VE observed from the yard.
Ly = Number of doors with VE observed from the yard on the push side.
ln = Natural
logarithm.
N = Total number of
ovens in the battery.
Ni = Total number of inoperable ovens.
PNO = Number of ports not observed.
Povn = Number of ports per oven.
PVE = Number of topside port lids with VE.
PLD = Percent leaking
coke oven doors for the test run.
PLL = Percent leaking
topside port lids for the run.
PLO = Percent leaking
off-take systems.
T = Total time
allowed for traverse, seconds.
Tovn = Number of off-take systems (excluding jumper
pipes) per oven.
TNO = Number of off-take systems not observed.
TVE = Number of off-take systems with VE.
Xi = Seconds of VE during the ith charge.
Z = Number of topside
port lids or off-take systems with VE.
12.2 Criteria for Acceptance for VE Determinations from Coke Oven Door Areas.
After completing the
run, calculate the maximum time allowed to observe the ovens using the
following equation:
12.3 Criteria for Acceptance for VE Determinations from Topside Port Lids and Off-take Systems.
After completing the
run (allow 2 traverses for batteries with double mains), calculate the maximum
time allowed to observe the topside port lids and/or off-take systems by the
following equation:
12.4 Average Duration of VE from Charging Operations.
Use Equation 303
12.5 Percent Leaking Doors (PLD).
Determine the total
number of doors for which observations were made on the coke oven battery as
follows:
12.5.1 For each test
run (one run includes both the coke side and the push side traverses), sum the
number of doors with door area VE. For batteries subject to an approved
alternative standard under ¤ 63.305 of this part, calculate the push side and
the coke side PLD separately.
12.5.2 Calculate
percent leaking doors by using Equation 303-5:
12.5.3 When traverses
are conducted from the bench under sheds, calculate the coke side and the push
side separately. Use Equation 303-6 to calculate a yard-equivalent reading:
If Lb is less than zero, use zero for Lb in
Equation 303-7 in the calculation of PLD.
12.5.3.1 Use Equation
303-7 to calculate PLD:
Round off PLD to the
nearest hundredth of 1 percent and record as the percent leaking coke oven
doors for the run.
12.5.3.2 Average
Percent Leaking Doors. Use Equation 303-8 to calculate the daily 30-day rolling
average percent leaking doors for each battery using these current day's
observations and the 29 previous valid daily sets of observations.
12.6 Topside Port Lids.
Determine the percent
leaking topside port lids for each run as follows:
12.6.1 Round off this
percentage to the nearest hundredth of 1 percent and record this percentage as
the percent leaking topside port lids for the run.
12.6.2 Average
Percent Leaking Topside Port Lids. Use Equation 303-10 to calculate the daily
30-day rolling average percent leaking topside port lids for each battery using
these current day's observations and the 29 previous valid daily sets of
observations.
12.7 Off-take Systems.
Determine the percent
leaking off-take systems for the run as follows:
12.7.1 Round off this
percentage to the nearest hundredth of 1 percent and record this percentage as
the percent leaking off-take systems for the run.
12.7.2 Average
Percent Leaking Off-take Systems. Use Equation 303-12 to calculate the daily
30-day rolling average percent leaking off-take systems for each battery using
these current day's observations and the 29 previous valid daily sets of
observations.
13.0 Method Performance. [Reserved]
14.0 Pollution Prevention. [Reserved]
15.0 Waste Management. [Reserved]
16.0 References.
1. Missan, R., and A.
Stein. Guidelines for Evaluation of Visible Emissions Certification, Field
Procedures, Legal Aspects, and Background Material. U.S. Environmental
Protection Agency. EPA Publication No. EPA-340/1-75-007. April 1975.
2. Wohlschlegel, P.,
and D. E. Wagoner. Guideline for Development of a Quality Assurance Program:
Volume IX -Visual Determination of Opacity Emission from Stationary Sources.
U.S. Environmental Protection Agency. EPA Publication No. EPA-650/4-74-005i.
November 1975.
3. U.S. Occupational
Safety and Health Administration. Code of Federal Regulations. Title 29,
Chapter XVII, Section 1910.1029(g). Washington, D.C. Government Printing
Office. July 1, 1990.
4. U.S. Environmental
Protection Agency. National Emission Standards for Hazardous Air Pollutants;
Coke Oven Emissions from Wet-Coal Charged By-Product Coke Oven Batteries;
Proposed Rule and Notice of Public Hearing. Washington, D.C. Federal Register.
Vol. 52, No. 78 (13586). April 23, 1987.
17.0 Tables, Diagrams, Flowcharts, and Validation Data.
Figure 303-1.
Charging System Inspection.
Figure 303-2. Door
Area Inspection.
Figure 303-3.
Topside Inspection.
