SECTION 252:626-17-3. Pressure tanks

  Hydropneumatic (pressure) tanks, provided as the only storage facility, are acceptable only in small water systems serving not more than 30 homes. Pressure tank storage is not adequate for fire protection purposes. Pressure tanks must meet American Society of Mechanical Engineers Code requirements or an equivalent requirement of state and local laws and regulations for the construction and installation of unfired pressure vessels.

(1)   Provide at least 2 pressure tanks.

(2)   Locate the tanks above normal ground surface.

(3)   Pressure tanks must be completely housed.

(4)   Design the capacity of the wells and pumps in a hydropneumatic system to be at least 10 times the average daily consumption rate. The gross volume of the hydropneumatic tank, in gallons, must be at least 10 times the capacity of the largest pump, rated in gal/min.

(5)   Provide diversion piping for each tank to permit operating the system while it is being repaired or serviced.

(6)   Provide each tank with:

(A)   an access manhole,

(B)   a drain, and

(C)   control equipment including:

(i)   pressure gauge,

(ii)   manual air blow-off,

(iii)   addition of air, and

(iv)   pressure operated start-stop controls for the pumps.

[Source: Added at 18 Ok Reg 1612, eff 6-1-01; Amended at 25 Ok Reg 2304, eff 7-11-08]