Current through Register Vol. 49, No. 13, September 23, 2024
Subpart
1.
Applicability.
This part applies only to certified hoods and hoods the owner
or operator elects to be certified. Nothing in this part shall be construed to
allow the owner or operator of an emission facility to violate an applicable
requirement or compliance document. Hoods evaluated before June 8, 1999, using
a form, the contents of which differ from the content in subpart
3, are not required to be
reevaluated, unless requested by the commissioner to demonstrate continued
conformity with the design and operating practices described in the manual
incorporated by reference under part
7011.0061.
Subp. 2.
Certification required.
In order to use a certified hood control efficiency value in
part
7011.0070, subpart 1a, Table A,
the owner or operator of a stationary source must:
A. arrange for a testing company to conduct a
hood evaluation;
B. document, on a
form provided by the commissioner, that the hood conforms to the design and
operating practices recommended in the manual incorporated by reference under
part
7011.0061 and must include with
the permit application a certification statement as specified in item C, if the
hood exists at the time of application. If the hood does not exist at the time
of application, then the certification required in item C shall be sent to the
commissioner within 30 days after start-up. The form used to demonstrate that
the hood conforms to the required design and operating practices shall contain
the elements listed in subpart
3; and
C. include on the form required under item B
a certification statement signed by the responsible official, stating as
follows: "I certify under penalty of law that the aforementioned hood(s) has
(have) been evaluated under my direction or supervision by qualified personnel
and that, to the best of my knowledge and belief, the (each) hood conforms to
the design and operating practices recommended in "Industrial Ventilation - A
Manual of Recommended Practice, American Conference of Governmental Industrial
Hygienists.""
Subp. 3.
Contents of hood evaluation form.
The hood evaluation form required in subpart
2 shall include:
A. hood dimensions recommended by the manual
incorporated by reference under part
7011.0061;
B. design capture velocity and justification
for use of this velocity and a list of the manual pages relied on;
C. minimum recommended air flow into the
hood;
D. recommended hood face
velocity or slot velocity, and, if applicable, plenum and duct
velocity;
E. capture velocity test
plan; and
F. actual values of
design parameters listed in items A to D, as well as fan rotation speed or fan
power draw, as determined through testing.
Subp. 4.
Monitoring and record
keeping.
The owner or operator of a certified hood shall:
A. maintain at the stationary source the most
current record of each hood evaluation required by part
7011.0070; and
B. measure the fan rotation speed, fan power
draw, face velocity, or other comparable air flow indicator for each hood and
maintain a yearly summary of these measurements. Each yearly summary shall be
maintained at the stationary source for a minimum of five years.
Statutory Authority: MS s
116.07
