Section 327IAC3-6-29. Submersible type lift stations

   Submersible type lift stations shall meet the requirements for lift stations described throughout this rule, except as modified in accordance with the following:

(1) Submersible pumps and motors shall be:

(A) rated for use with wastewater;

(B) in accordance with the specialized requirements of the National Electric Code; and

(C) provided with a method of detecting shaft seal failure or potential seal failure on each pump and motor.

(2) Submersible pumps shall be provided with means to be replaced without dewatering of the wet well or disconnecting any piping in the wet well.

(3) Electrical supply, motor and pump control, and alarm circuits shall be:

(A) accessible from outside the wet well for disconnection; and

(B) protected from exposure in accordance with the specialized requirements of the National Electric Code.

(4) Valves required in section 21 of this rule shall be located in a separate valve pit.

(5) The valve pit of subdivision (4) shall be equipped:

(A) with a method of dewatering; and

(B) with a drain line having a gas and water tight valve if the valve pit is to be dewatered.

(6) Check valves that are integral to the pump need not be placed in the valve pit.

(Water Pollution Control Division; 327 IAC 3-6-29; filed May 17, 1999, 12:11 p.m.: 22 IR 3097; readopted filed Apr 11, 2005, 2:45 p.m.: 28 IR 2470; readopted filed Jun 15, 2011, 11:15 a.m.: 20110713-IR-327110193BFA)