Nevada Administrative Code
Chapter 445A - Water Controls
PUBLIC WATER SYSTEMS
Design, Construction, Operation and Maintenance
Section 445A.6706 - Pumping facilities: Hydropneumatic systems
Universal Citation: NV Admin Code 445A.6706
Current through September 16, 2024
1. Hydropneumatic systems:
(a) Must not be used
in a public water system with 150 or more service connections.
(b) Shall be deemed inadequate for protection
from fire and the storage of water.
2. If a hydropneumatic system is used:
(a) The tank and its appurtenances must be
completely housed and, except as otherwise approved by the Division or the
appropriate district board of health, located above the normal surface of the
ground. If the Division or the appropriate district board of health authorizes
the location of the tank or any appurtenances below the ground, there must be
adequate drainage, heating, ventilation, lighting, maintenance and protection
from flood.
(b) The hydropneumatic
system must be designed to provide a minimum pressure of at least 30 psi at all
points in the distribution system during peak hour demand. A pressure gauge
must be installed on the inlet line for the pressure tank.
(c) The pressure tanks must be constructed in
such a manner that:
(1) The tanks meet
anticipated requirements for pressure.
(2) The interior coatings of the tanks are
determined to be compatible with drinking water.
(3) The tanks are equipped with a 24-inch
access manhole, a drain, control equipment that consists of a pressure gauge, a
glass for sighting water, an air blowoff and a means for adding air, and
pressure-operated controls for starting and stopping the pumps.
(4) Bypass piping is provided that will
facilitate the repair or coating of the tanks.
(5) The amount of the gross volume, as
expressed in gallons, of the hydropneumatic tank is at least 10 times the
amount of the capacity, as expressed in gallons per minute, of the largest pump
in the hydropneumatic system.
(d) At least two pumping units must be
provided. The capacity of the wells and pumps in the hydropneumatic system must
be at least 10 times the average day demand.
(e) The method used to adjust the volume of
air must be approved by the Division or the appropriate district board of
health. The compressors must deliver an adequate volume of air, which has been
filtered and is free of oil, to the pressure tank.
Added to NAC by Bd. of Health, eff. 2-20-97; A by Environmental Comm'n by R194-08, 10-27-2009
NRS 445A.860
Disclaimer: These regulations may not be the most recent version. Nevada may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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