Current through Register Vol. 43, No. 39, September 26, 2024
(a) No person shall
place, store, or hold in any stationary tank, reservoir, or other container not
having a permanent fixed roof and capable of holding more than 40,000 gallons
of any VOC liquid with a true vapor pressure of 1.5 pounds per square inch
absolute (psia) or greater at storage conditions unless the container is
equipped with an external floating roof having a primary seal system. The
container shall also be equipped with a continuous secondary seal extending
from the floating roof to the container wall if:
(1) the container is of welded construction
with a metallic type shoe seal, a liquid mounted foam seal, a liquid mounted
liquid filled seal or any other closure device which has been demonstrated to
the satisfaction of the department to be an equivalent primary seal system, and
the true vapor pressure of the stored VOC liquid is four psia or greater at
storage conditions;
(2) the
container floating roof has a vapor mounted primary seal, unless the seal can
be demonstrated to the satisfaction of the department to be equivalent to a
metallic or liquid mounted seal, in which case the requirements of subsection
(a)(1) apply; or
(3) the container
is of riveted construction.
(b) All seal closure devices shall meet the
following requirements:
(1) There shall be no
visible holes, tears, or other openings in the seal or the seal fabric;
(2) they shall be intact and there
shall be no visible gaps between the secondary seal and the wall of the storage
tank; and
(3) when a vapor-mounted
seal is demonstrated to the satisfaction of the department to be an equivalent
primary closure device, the accumulated area of openings exceeding one-eighth
inch in width between the secondary seal and the tank wall shall not exceed one
square inch per foot of tank diameter.
(c) All openings in the external floating
roof, except for automatic bleeder vents, rim space vents and leg sleeves,
shall provide a projection below the liquid surface. The openings shall be
equipped with a cover, seal or lid. The cover, seal or lid shall be in a closed
position at all times except when the device is in actual use. Automatic
bleeder vents shall be closed at all times except when the roof is floated off
or landed on the roof leg supports and rim vents shall be set to open when the
roof is being floated off the roof leg supports or at the manufacturer's
recommended setting. No VOC liquid shall accumulate on the floating roof. Any
emergency roof drain shall be provided with a slotted membrane fabric cover or
equivalent cover that covers at least 90 percent of the area of the opening.
(d) The following are specifically
exempted from the requirements of this regulation:
(1) external floating roof tanks having
capacities less than 10,000 barrels used to store produced crude oil and
condensate prior to lease custody transfer;
(2) A metallic-type shoe seal in a welded
tank which has a secondary seal from the top of the shoe seal to the tank wall;
(3) External floating roof tanks
storing waxy, heavy pour crudes; and
(4) External floating roof tanks with other
closures or devices demonstrated to the satisfaction of the department to be
equal in efficiency for purposes of air pollution control.
(e) The owner or operator of a
facility subject to the provisions of this regulation shall:
(1) within 16 weeks after the facility
becomes subject to the provisions of this regulation, submit a control plan to
the department providing for final compliance as expeditiously as practicable
but not later than the date prescribed by subsection (e)(5) of this regulation;
(2) award contracts or purchase
orders for seal systems or other equipment necessary for compliance within 24
weeks after the facility becomes subject to the provisions of this regulation;
(3) initiate on-site construction
or installation activities required for compliance within 48 weeks after the
facility becomes subject to the provisions of this regulation;
(4) complete on site construction or
installation of equipment for compliance within 100 weeks after the facility
becomes subject to the provisions of this regulation; and
(5) demonstrate compliance with applicable
provisions of this regulation within two years after the facility becomes
subject to the provisions of this regulation except that final compliance shall
be demonstrated within one year after the facility becomes subject to the
provisions of this regulation where such compliance does not require the
purchase, relocation or construction of equipment items other than piping.
(f) The owner or
operator of each affected storage tank shall visually inspect the floating roof
primary seal each time the storage tank is emptied and degassed, but no less
than once every five years. A visual inspection of the secondary seal shall be
conducted semi-annually and the secondary seal gap measurements shall be
conducted annually to ensure compliance with (b)(2) and (b)(3). The owner or
operator shall repair any damage to the secondary seal or seal fabric within 72
hours of finding secondary seal damage and repair primary seal damage prior to
refilling the storage tank.
(g)
The owner or operator of each affected storage tank shall maintain records on a
monthly basis for two years from the date of record at the facility available
for department inspection for:
(1) amount and
type of VOC liquids stored/turned over;
(2) inspection dates with the corresponding
findings;
(3) date and description
of repairs of each storage tank and floating roof; and
(4) the average temperature on a monthly
basis of the stored VOC liquids.
(h) The provisions of this regulation shall
be applicable only to VOC liquid storage tanks operated at facilities subject
to the provisions of either K.A.R. 28-19-64, 28-19-67 or 28-19-68.
