La. Admin. Code tit. 51 § XII-231
Current through Register Vol. 50, No. 11, November 20, 2024
Section XII-231 - Distribution System StorageA. The applicable design standards of §225 of this Part shall be followed for distribution system storage.B. Pressures. The maximum variation between high and low levels in storage structures providing pressure to a distribution system should not exceed 30 feet. The minimum working pressure in the distribution system shall be 20 psi gauge and the normal working pressure should be approximately 60 to 80 psi gauge. When static pressures exceed 100 psi gauge, pressure reducing devices shall be provided on mains or as part of the meter setting on individual service lines in the distribution system.C. Drainage. Finished water storage structures which provide pressure directly to the distribution system shall be designed so they can be isolated from the distribution system and drained for cleaning or maintenance without causing a loss of pressure in the distribution system. The storage structure drain shall discharge to the ground surface with no direct connection to a sewer or storm drain.D. Level Controls. Adequate controls shall be provided to maintain levels in distribution system storage structures. Level indicating devices should be provided at a central location. 1. Pumps should be controlled from tank levels with the signal transmitted by telemetering equipment when any appreciable head loss occurs in the distribution system between the source and the storage structure.2. Altitude valves or equivalent controls may be required for second and subsequent structures on the system.3. Overflow and low-level warnings or alarms should be located where they will be under responsible surveillance 24 hours a day.La. Admin. Code tit. 51, § XII-231
Promulgated by the Department of Health, Office of Public Health, LR 44338 (2/1/2018), effective 8/1/2018.AUTHORITY NOTE: Promulgated in accordance with the provisions of R.S. 40:4.A.(8), 40:4.13.D.(1)(2) and 40:5.A.(2)(3)(5)(6)(7)(17).