4.12.705 MANUFACTURER'S MARKING REQUIREMENTS ON CONTAINERS AND SYSTEMS
(1) Each container or system covered in ARM 4.12.719, ARM 4.12.720, ARM
4.12.721, ARM 4.12.722, shall be marked as follows:
(a) With a mark identifying compliance with and other markings required by
the rules of the code under which the container is constructed, with the
capacity of the container in pounds or gallons (U.S. Standards) , with the
working pressure in psig for which the container is designed, and with the
thickness of the shell and heads. This information shall appear:
(i) on the container and system nameplate on underground installations;
(ii) on the container on aboveground installations.
(b) With the name, address and phone number of the supplier of the system
and the date of manufacture. This information shall appear on the system
nameplate for both underground and aboveground containers.
(c) With markings indicating the maximum level to which the container may be
filled with liquid at temperatures between 20 degrees Fahrenheit (F) and 100
degrees F, except on containers provided with fixed maximum level indicators or
which are filled by weighing. Markings shall be in increments of not more than
20 degrees F and shall appear on the system nameplate or on the liquid level
gauging device on both underground and aboveground containers. Refrigerated
storage tanks shall be exempt from these requirements but shall be marked to
show the maximum permissible liquid level, see ARM 4.12.712.
(d) With the overall length and outside diameter of the container. This
information shall appear:
(i) on the system nameplate on underground containers;
(ii) on the container on aboveground
(2) All main operating valves on permanently installed storage containers
having a capacity of over 2000 water gallons shall be identified to show
whether the valve is in liquid or vapor service. The method of identification
shall be by label or color code as follows:
(a) the label LIQUID (or LIQUID VALVE) or VAPOR (or VAPOR VALVE) , as
appropriate, shall be placed on or within twelve inches of the valve by means
of a stencil tag or decal; or
(b) liquid valves shall be painted orange and vapor valves shall be painted
yellow. The legend ORANGE-LIQUID or YELLOW-VAPOR shall be displayed
in at least one conspicuous place at each permanent storage location. The
legend shall have letters at least two inches high and shall be placed against
a contrasting background.
History: Sec. 80-10-503, MCA; IMP, Sec. 80-10-503, MCA; NEW, 1986 MAR p. 1820, Eff. 10/31/86.