Section 170.428  General Requirements for UST Fuel Dispensing Systems

a)         Where tanks are at an elevation which produces a gravity head on the dispensing device, the tank outlet shall be equipped with a device, such as a solenoid valve, positioned downstream as close as possible to the tank, so installed and adjusted that liquid cannot flow by gravity from the tank.

b)         Where dispensing is from a floating structure, suitable lengths of approved flexible hose may be employed between the shore piping and the piping on the floating structure as made necessary by change in water level or shoreline.

c)         Where excessive stray currents are encountered, piping containing liquids at marine service stations shall be electrically insulated from the shore piping.

d)         All piping shall be located so as to be protected from physical damage.

e)         A readily accessible valve to shut off the product supply from shore shall be provided in each pipeline at or near the approach to the pier and at the shore-end of each marine pipeline adjacent to the point where a flexible hose is attached.

f)          Each fill pipe for liquid storage shall be identified by color code or other marking to identify the product for which the tank is used.  The color code or marking shall be maintained in legible condition throughout the life of the tank system.

g)         A clearly identified and easily accessible emergency shut-off switch shall be provided at a location remote from dispensing devices, to shut off the power to all dispensing devices in the event of an emergency.  Emergency controls shall be installed at a location approved by the Office of the State Fire Marshal, but controls shall be at least 20 feet but not more than 100 feet from dispensers.

h)         All dispensing devices shall be protected against collision damage by suitable means.  Dispensing devices shall be listed by an approved testing laboratory.

i)          A control shall be provided that will permit the pump to operate only when a dispensing nozzle is removed from its bracket or normal position with respect to the dispensing device, and the switch on this dispensing device is manually activated.  This control shall also stop the pump when all nozzles have been returned, either to their brackets or normal non-dispensing position.

j)          A listed emergency breakaway device designated to retain liquid on both sides of the breakaway point shall be installed on each hose.  Where hoses are attached to a hose-retrieving mechanism, the listed emergency breakaway device shall be installed between the point of attachment of the hose-retrieving mechanism to the hose and the hose nozzle valve.

k)         Pressurized piping systems require a listed rigidly anchored emergency shut-off valve installed in the supply line at the base of each individual dispenser.  Such valve shall incorporate a fusible link or other thermally activated device, designed to close automatically in the event of severe impact or fire exposure.

l)          Listed automatic-closing type hose nozzle valves shall be provided on all dispensers.  Dispensing nozzles used at marine service stations shall not be provided with a latch-open device.

m)        Marine service stations shall be of the attended type only.

(Source:  Added at 19 Ill. Reg. 5467, effective April 1, 1995)