Current through August 26, 2024
The owner or operator of a unit subject to the combustion
optimization requirements of s.
NR 428.05(2) shall comply with all
applicable methods and procedures for combustion optimization listed in this
section.
(1) GENERAL. All combustion
optimizations conducted shall be performed according to methods approved in
writing by the department. The owner or operator responsible for combustion
optimizations shall follow the procedures in this section.
(2) COMBUSTION OPTIMIZATION NOTIFICATION AND
PLAN SUBMITTAL. The department shall be notified in writing at least 45 days in
advance of a combustion optimization to provide the department an opportunity
to evaluate the plan and to have a representative present to witness the
combustion optimization procedures. The notice shall provide a combustion
optimization plan which includes, but need not be limited to, the following
information:
(a) The results of an
engineering study of the process to be optimized. The engineering report shall
identify and evaluate the options available for modifications to the process
that would optimize combustion while minimizing NOx emissions.
(b) A description of the process or operation
variables which affect the air contaminant source's emissions.
(c) A description of the process to be
optimized.
(d) A description of the
sampling equipment and the combustion optimization methods and procedures to be
used.
(e) The date and starting
time of the combustion optimization.
(f) A description of the number and location
of any sampling ports and sampling points and an identification of the
combustion gases to be sampled.
(g)
A statement indicating the production rate and the operating conditions at
which the combustion optimization will be conducted.
(3) COMBUSTION OPTIMIZATION PLAN EVALUATION.
In evaluating the combustion optimization plan, the department shall respond to
the source owner or operator within 15 business days of receipt of the plan and
may require one or more of the following activities:
(a) A pre-combustion optimization conference
which includes the owner or operator of the source, the person conducting the
combustion optimization and the department to discuss any deficiencies in the
plan or settle any combustion optimization procedure questions the department,
the person conducting the combustion optimization or the source owner or
operator might have.
(b) Any change
to the sampling method that is deemed necessary by the department to conduct a
proper combustion optimization.
(c)
A rescheduling of the combustion optimization to accommodate witnessing or
source production schedules.
(4) NOTIFICATION OF COMBUSTION OPTIMIZATION
PLAN REVISION. The source owner or operator shall notify the department of any
modifications to a combustion optimization plan at least 5 business days prior
to the combustion optimization. In the event the owner or operator is unable to
conduct the combustion optimization on the date specified in the plan, due to
unforeseeable circumstances beyond the owner or operator's control, the owner
or operator shall notify the department at least 5 business days prior to the
scheduled combustion optimization date and specify the date when the combustion
optimization is to be rescheduled.
(5) PROPER FACILITIES FOR COMBUSTION
OPTIMIZATION. The department may require the owner or operator of a source to
provide proper facilities for conducting combustion optimization tests which
may include the testing facilities listed in s.
NR 439.07(5) (a) to (e).
(6) WITNESSING REQUIREMENTS. The department
may require that a department representative be present at any combustion
optimization. The department may require the following activities:
(a) The department may require the person
conducting the combustion optimization to provide the department a copy of all
test data and equipment calibration data prepared or collected for the
combustion optimization.
(b) The
department may require the source owner or operator and person conducting the
combustion optimization to correct any deficiency in the performance of the
combustion optimization provided that the department notifies the source owner
or operator and person conducting the combustion optimization of the deficiency
as soon as it is discovered. The failure of a source owner or operator and
person conducting the combustion optimization to correct any deficiency may
result in the department refusing to accept the results of the combustion
optimization.
(7)
COMBUSTION OPTIMIZATION EQUIPMENT CALIBRATION REQUIREMENTS. The components of
any emission sampling train or associated sampling equipment listed in this
subsection shall be calibrated not more than 60 days before the test. This
includes the following:
(a) Any equipment used
to measure gas velocity.
(b) Any
equipment used to meter sample gas volume.
(c) Any equipment used to regulate sample gas
flow.
(d) Any equipment used to
measure temperature.
(e) Any gas
sampling nozzle used during the emission test.
(f) Any equipment used to determine gas
molecular weight.
(g) Any other
sampling equipment that requires periodic calibration.
(8) PROCEDURES FOR CONDUCTING COMBUSTION
OPTIMIZATIONS. Any emissions testing conducted in conjunction with combustion
optimization shall be conducted in accordance with s.
NR 439.07. The combustion optimization shall include the
following procedures:
(a) An engineering
study to identify the optimized combustion profile or equipment modifications
needed to optimize combustion. The study shall address, but is not limited to,
the modification of the following systems: fuel delivery, burner, primary and
secondary combustion monitoring, combustion air delivery and burner
management.
(b) The combustion
optimization shall be based on burner tune-up procedures which result in
maximum combustion efficiency and a low NOx operating
curve. This curve shall determine the operating range of combustion variables
such as CO and O2 at set points within the following
ranges: 20-30% load, 45-55% load, 70-80% load and 95-100% load, for those set
points that represent at least 10% of boiler operating hours in a typical
year.
(c) A continuous combustion
analyzer shall be used to monitor the operation of the combustion unit in
accordance with the combustion efficiency and low NOx
operating curve required under this section. The analyzer shall monitor the
combustion parameters CO and O2 or monitor
NOx directly. The fuel flow rate shall be
monitored.
(9)
COMBUSTION OPTIMIZATION REPORTING REQUIREMENTS. The owner or operator of a
source that conducts a combustion optimization shall submit a copy of the
report of the combustion optimization to the department within 60 days after
its completion. If requested, the department may grant an extension of up to 30
days for combustion optimization report submittal. The failure to include the
following information in a combustion optimization report may result in
rejection of the combustion optimization. The combustion optimization report
shall include, but need not be limited to, the following information:
(a) A detailed description of the process
optimized and the procedures employed.
(b) A log of the operating conditions of the
process optimized and of any associated air pollution control device.
(c) A summary of results, expressed in terms
of the concentrations of NOx, O2
and CO, prior to and following the combustion optimization.
(d) Sample calculations employing all the
formulas used to calculate the results.
(e) The field and laboratory data for the
optimization.
(f) The engineering
study and combustion efficiency and low NOx operating
curve required under sub. (8) (a) and (b).
(g) The report of any visible emission
evaluations performed during the combustion optimization.
(h) A copy of any steam, opacity or airflow
charts made during the optimization.
(i) The report of any fuel analysis performed
on the fuel burned during the optimization.
(j) Documentation of any process upset
occurring during the optimization.
(k) If the combustion optimization being
conducted is one required under sub. (10), the changes made to the process or
control device since the last test.
(10) ADDITIONAL COMBUSTION OPTIMIZATIONS.
(a) The department may require an
NOx emissions source to conduct an additional combustion
optimization if the department determines that a source has not satisfied the
requirements of sub. (8) or (9).
(b) Combustion units that are modified
sources with respect to NOx due to a change in the
method of operation shall perform a new combustion optimization including the
determination of a new combustion efficiency and low NOx
operating curve.
