410 IAC 6-10.1-73 Effluent pumps

Sec. 73. (a) All effluent pumps shall be: (1) submersible pumps suitable for use in a corrosive atmosphere; (2) sized to deliver the total design flow rate while meeting the total dynamic head requirements of the on-site sewage system; (3) connected to pump discharge piping that is adequately secured; and (4) installed in such a manner as to allow for removal without entering the dosing tank or dewatering the dosing tank. (b) Duplex pumps shall be used for flows greater than seven hundred fifty (750) gallons per day. (c) Effluent pumps shall be provided with a suitable means of quick, convenient disconnection from the discharge piping, as follows: (1) Fittings and valves shall be of compatible corrosion resistant material. (2) A quick disconnect coupling, breakaway flange, or similar disconnect device shall be provided for each pump discharge pipe. (3) Quick disconnect couplings and valves shall be readily accessible from the ground surface without entering the dosing tank. (4) Submersible pumps shall be provided with a corrosion resistant lifting apparatus such as a rope or chain to facilitate removal of the pump. For projects involving flows greater than seven hundred fifty (750) gallons per day, pumps must be mounted on guide rails manufactured to withstand the corrosive environment of a dosing tank. (d) All floats for pump operation shall be mounted according to manufacturer's specifications using fasteners manufactured for that purpose. (e) Controls other than liquid level sensors shall not be located within the dosing tank. (f) Junction boxes shall be rated as a NEMA 4X, National Electrical Manufacturers Association, NEMA 250-2008. All connectors to the junction box shall form a watertight seal: (1) to the junction box; and (2) between connector openings and incoming wires. (g) Any connector not used for wiring shall be fitted with a watertight plug.