4.12.731 LIQUID LEVEL GAUGING DEVICES
(1) Gauging devices shall be
arranged so that the maximum liquid level to which the container may be filled
is readily determinable.
(2) Gauging devices shall have a design working pressure at least equal to
the design pressure of the container on which they are used.
(3) Tube type liquid level gauging devices on containers in excess of 3,000
gallons shall be equipped with shutoff valves at the lower connection.
History: Sec. 80-10-503, MCA; IMP, Sec. 80-1-503, MCA; NEW, 1986 MAR p. 1820, Eff. 10/31/86.