Louisiana Administrative Code
Title 43 - NATURAL RESOURCES
Part XI - Office of Conservation-Pipeline Division
Subpart 2 - Underwater Obstructions
Chapter 25 - Compressed Natural Gas
Section XI-2531 - Valves
Current through Register Vol. 50, No. 9, September 20, 2024
A. Valves, valve packing, and gaskets shall be suitable for the fuel over the full range of pressures and temperatures to which they may be subjected under normal operating conditions.
B. Shutoff valves shall have a design working pressure not less than the rated working pressure of the entire system with a safety factor of four.
C. Valves of cast iron or semi-steel other than those complying with "ASTM Specifications A-536 (Grade 60-40-18), A-395, and A-47 (Grade 35018)" shall not be used as primary shutoff valves.
D. Valves of a design that will allow the stem to be removed without removal of the complete bonnet or disassembly of the valve body, and valves with valve stem packing glands which cannot be replaced under pressure shall not be used. Exception: where there is a shutoff valve of acceptable type between them and the container or pressure vessel (this does not apply to service valves).
E. The manufacturer shall stamp or otherwise permanently mark the valve body to indicate the service ratings. Exception: fuel supply container valves need not be marked as such.
AUTHORITY NOTE: Promulgated in accordance with R.S. 30:751 and 752.
