SECTION 252:626-15-5. Appurtenances

(a)   Valves.

(1)   All pumps must have a non-slam type check valve located at each pump casing and a positive closing valve installed on the discharge line after the check valve. The check valve must work in conjunction with a surge suppressor, wherever conditions warrant.

(2)   Provide shut-off valves on suction lines to all pumps except vertical turbine pumps. Design and locate valves so that disturbance is minimized.

(b)   Piping. Piping must:

(1)   be designed so that the friction losses will be minimized,

(2)   not be subject to contamination,

(3)   have watertight joints,

(4)   be protected against surge or water hammer, and

(5)   be protected against freezing.

(c)   Controls. Positively and accurately control the pumps, their prime movers, and accessories for speed, pressures, quantities of discharge, operating temperatures, lubrication, voltages, and all other factors essential to proper operation. Provide for the following:

(1)   controls for alternation of pumps,

(2)   prevention of energizing the motor in the event of a backspin cycle, and

(3)   location of electrical controls above grade.

(d)   Gauges, meters and sampling cocks.

(1)   Equip each pump with the following:

(A)   standard pressure gauge on its discharge line,

(B)   compound gauge on its suction line,

(C)   smooth nosed sampling cocks on suction line and discharge line of booster pumps,

(D)   recording gauges in the larger stations, and

(E)   discharge measuring device.

(2)   Equip pump stations carrying water from well fields or treatment facilities with flow indicating, totalizing and recording devices.

(e)   Water pre-lubrication. When automatic pre-lubrication of pump bearings is necessary and an auxiliary power supply is provided, provide the pre-lubrication line with a valved bypass around the automatic control.

[Source: Added at 18 Ok Reg 1612, eff 6-1-01]