Container and cylinder valves and pressure regulation equipment must be protected against tampering when installed for use.
Container and cylinder valves shall be protected while in transit, in storage, and while being moved prior to connection to the process line, as follows:
A valve on a cylinder which is enclosed in a box or crate of sufficient strength to protect the valve from damage during transit or storage need not be provided with a protective cap or collar.
If containers or cylinders are not connected for service, the outlet valves must be kept tightly closed and protected even though containers are considered empty. This requirement does not apply at a facility specifically designed for filling containers or cylinders.
Cylinder valves must be in accordance with the connection standard for ammonia as contained in CGA V-1, American National, Canadian, and Compressed Gas Association Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections (ANSI/CSA/CGA V-1).
Minn. R. agency 105, ch. 1513, SYSTEMS USING DOT PORTABLE TANKS AND CYLINDERS, pt. 1513.0920
Statutory Authority: MS s 18C.121