Illinois Administrative Code › Title 8 - AGRICULTURE AND ANIMALS › Part 215 - ANHYDROUS AMMONIA, LOW PRESSURE NITROGEN SOLUTIONS, EQUIPMENT, CONTAINERS, AND STORAGE FACILITIES › Subpart A - ANHYDROUS AMMONIA, EQUIPMENT, CONTAINERS, AND STORAGE FACILITIES › Section 215.90 - Refrigerated Storage

Current through Register Vol. 48, No. 28, July 12, 2024
a) This
				Section applies specifically to systems using tanks for storage of anhydrous
				ammonia under refrigerated conditions. Section 215.25 applies to this Section
				unless otherwise stated.
b) Tanks
				may be designed for any storage pressure desired as determined by economical
				design of the refrigerated system.
c) The design temperature shall be the
				minimum temperature to which the container will be refrigerated and shall be so
				designated.
d) Containers with a
				design pressure exceeding 15 psig shall be constructed in accordance with
				Section 215.25 and the material shall be selected from those listed in API
				Standard 620, Design and Construction of Large, Welded, Low-Pressure Storage
				Tanks, Tables 2.02, R.2.2, R.2.3, or R.2.4.
e) Tanks with a design pressure of 15 psig or
				less shall be constructed in accordance with the general requirements of API
				Standard 620, including Appendix R.
f) When austenitic stainless steels or
				nonferrous metals are used, the ASME Code shall be used as a guide in selection
				of materials for use at the design temperature.
g) Tanks shall be supported on suitable
				noncombustible foundations designed to accommodate the type of tank being
				used.
h) Adequate protection
				against flotation or other water damage shall be provided wherever high flood
				water might occur.
i) Tanks storing
				product at less than 32°F shall be supported in such a way, or heat shall
				be supplied, to prevent the effects of freezing and subsequent frost heaving of
				the soil.
j) The area surrounding a
				refrigerated tank, or group of such tanks, shall be provided with drainage,
				diked, or provided with other secondary containment systems to prevent
				accidental discharge of liquid from spreading to uncontrolled areas.
k) When drainage is employed, a slope of not
				less than 1% shall be provided. The drainage system shall terminate in an
				impounding basin having a capacity as large as the largest tank
				served.
l) Provision shall be made
				for the drainage of rain water from the dike or impounding area. Such drainage
				shall be provided with a positive means to stop the flow.
m) Where a dike is employed, the capacity of
				the diked enclosure shall be 110% of the capacity of the largest tank served.
				When computing the volume of the dike, allowance shall be made for the volume
				displaced by all other containers in the diked area.
n) The walls of a diked enclosure or the wall
				of an impounding basin used in a drainage system shall be of earth, steel,
				concrete, or other suitable material designed to be liquid tight and to
				withstand the hydrostatic pressure and temperature. Earth walls shall have a
				flat top at least 2 feet wide. The slope shall be stable and consistent with
				the angle of repose of the earth used.
o) The ground in an impounding basin or with
				a diked enclosure should be graded so that small spills or the early part of a
				large spill will accumulate at one side or corner, thereby contacting only a
				relatively small area of ground and exposing a relatively small area for heat
				gain. Shallow channels in the ground surface or low curbs of earth can help
				guide the liquid to these low areas without contacting a large ground
				area.
p) Each refrigerated
				container shall be marked with a nameplate on the outer covering in an
				accessible place as specified in the following:
1) With the name and address of the builder
				and the date of fabrication;
2)
				With the maximum volume or weight of the product, whichever is most meaningful
				to the user;
3) With the design
				pressure;
4) With the minimum
				temperatures in degrees Fahrenheit (°F) or degrees Celsius (°C) for
				which the container was designed;
5) With the maximum allowable water level to
				which the container may be filled for the test purposes;
6) With the density of the product in pounds
				per cubic foot or kilograms per cubic meter for which the container was
				designed; and
7) With the maximum
				level to which the container may be filled with liquid anhydrous
				ammonia.