Louisiana Administrative Code
Title 55 - PUBLIC SAFETY
Part V - Fire Protection
Chapter 50 - Boiler Construction, Maintenance, Inspection and General Use
Subchapter D - Potable Water Heaters (Hot Water Heaters Other than Hot Water Supply Boilers)
Section V-5053 - Safety Relief Valves
Current through Register Vol. 50, No. 9, September 20, 2024
A. Each potable water heater shall have at least one ASME certified pressure temperature relief valve of the automatic reseating type set to relieve at or below the maximum allowable working pressure of the potable water heater and/or no greater than 210° F. Safety relief valves officially rated as to capacity shall have pop action when tested by steam. When more than one safety relief valve is used on a potable water heater, the additional valve or valves shall be ASME rated and may be set within a range not to exceed 10 percent of the set pressure of the first valve. Safety relief valves shall be spring-loaded. Safety relief valves shall be so arranged that they cannot be reset at a higher pressure.
B. When water supply to a potable water heater exceeds 75 percent of the design pressure of the water heater, a pressure reducing valve is required.
AUTHORITY NOTE: Promulgated in accordance with R.S. 23:531 and R.S. 51:1424.
