Kan. Admin. Regs. § 4-10-2e - Container valves and appurtenances
(a) Connections to containers shall be
limited to liquid-level gauges, emergency shutoff valves, pressure gauges,
vapor-relief valves, liquid lines, vapor lines, and thermometers.
(b) Each vapor line and liquid line shall
have a manually operated shutoff valve located as close to the container as
practical.
(c) On or before July 1,
2012, each permanent storage container shall be equipped with an emergency
shutoff valve that meets the requirements of K.A.R. 4-10-1(l) .
(d) No metal part or component of a system
that is normally in contact with anhydrous ammonia shall be made of a metal
that is incompatible with anhydrous ammonia, including galvanized metal, cast
iron, zinc, copper, and brass.
(e)
Openings from the container or through fittings that are not larger than a no.
54 drill size opening shall not be required to be equipped with an excess flow
valve.
(f) Each valve and
appurtenance shall be suitable for use with anhydrous ammonia and designed for
not less than the maximum pressure to which the valve and appurtenance will be
subjected. Each valve that could be subjected to container pressures shall have
a rated working pressure of at least 250 psig.
(g)
(1) Each
vapor or liquid line greater than a no. 54 drill size opening shall be equipped
with an excess flow valve that closes automatically at the rated flows of vapor
or liquid specified by the manufacturer.
(2) The connections, lines, valves, and
fittings protected by one or more excess flow valves shall have a greater
capacity than the rated flow of the excess flow valves so that the valves will
close in case of failure at any point in the lines or fittings.
(h) Each liquid connection used to
fill a permanent storage container shall be fitted with a backflow check
valve.
(i)
(1) All piping, tubing, and fittings
subjected to container pressure shall be made of materials specified for use
with anhydrous ammonia and shall be designed for a minimum working pressure of
250 psig.
(2) All piping, tubing,
and metering or dispensing devices shall be securely mounted and protected
against damage.
(3) Threaded joints
may be used only with seamless black steel pipe that meets or exceeds ASME
schedule 80 specifications. Black steel pipe that meets or exceeds ASME
schedule 40 specifications with at least 800 psig minimum bursting pressure may
be used if pipe joints are welded or joined by means of welding type flanges.
Pipe joint compounds used shall be resistant to ammonia.
(4) Each flexible connection shall have a
bursting pressure of at least 1,000 psig.
Notes
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