Utah Admin. Code R307-328-4 - Loading of Tank Trucks, Trailers, Railroad Tank Cars, and Other Transport Vehicles
(1) No person shall
load or permit the loading of gasoline into any gasoline cargo tank unless the
emissions from such vehicle are controlled by use of a vapor collection and
control system and submerged or bottom filling. Vapor emissions to the
atmosphere shall not exceed 0.640 pounds per 1,000 gallons
transferred.
(2) The vapor
collection and control system required by Subsection (1) shall be properly
installed and maintained.
(3) The
loading device shall not leak.
(4)
The loading device shall utilize the dry-break loading design couplings and
shall be maintained and operated to allow no more than an average of 15 cc
drainage per disconnect for five consecutive disconnects.
(5) Loading and vapor lines shall be equipped
with fittings which make a vapor tight connection and shall automatically close
upon disconnection to prevent the release of organic material.
(6) A gasoline storage and transfer
installation that receives inbound loads and dispatches outbound loads (bulk
plant) need not comply with Section
R307-328-4 if it does not have a
daily average throughput of more than 3,900 gallons or 15,000 or more liters of
gasoline based upon a 30-day rolling average. Such installations shall on-load
and off-load gasoline by use of bottom or submerged filling. The emission
limitation is based on operating procedures and equipment specifications using
Reasonably Available Control Technology as defined in EPA documents EPA
450/2-77-026 October 1977, "Control of
Hydrocarbons from Tank Truck Gasoline Loading Terminals," and
EPA-450/2-77-035 December 1977, "Control of
Volatile Organic Emissions from Bulk Gasoline Plants." The design effectiveness
of such equipment and the operating procedures must be documented and submitted
to and approved by the director.
(7) Hatches of gasoline cargo tanks shall not
be opened at any time during loading operations except to avoid emergency
situations or during emergency situations. Pressure relief valves on storage
tanks and gasoline cargo tanks shall be set to release at the highest possible
pressure, in accordance with State or local fire codes and National Fire
Prevention Association guidelines. Pressure in the vapor collection system
shall not exceed the gasoline cargo tank pressure relief setting.
(8) Each owner or operator of a gasoline
storage or dispensing installation shall conduct testing of vapor collection
systems used at such installation and shall maintain records of tests for no
less than two years. Testing procedures of vapor collection systems shall be
approved by the director and shall be consistent with the procedures described
in the EPA document, "Control of Volatile Organic Compound Leaks from Gasoline
Tank Trucks and Vapor Collection Systems," EPA-450/2-78-051.
(9) Semi-annual testing shall be conducted
and records maintained of such test. The frequency of tests may be altered by
the director upon submittal of documentation that would justify a
change.
(10) The vapor collection
and vapor processing equipment shall be designed and operated to prevent gauge
pressure in the gasoline cargo tank from exceeding 18 inches of water and
prevent vacuum from exceeding 6 inches of water. During testing and monitoring,
there shall be no reading greater than or equal to 100% of the lower explosive
limit measured at 1.04 inches around the perimeter of a potential leak source
as detected by a combustible gas detector. Potential leak sources include
piping, seals, hoses, connections, pressure or vacuum vents, and vapor hoods.
In addition, no visible liquid leaks are permitted during testing or
monitoring.
Notes
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