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Installation – Pumps for Pump Station #4


Location
Mississippi
Publication Date
08/15/2019 02:45 PM EDT
Closing Date
09/06/2019 11:00 AM EDT
Issuing Organization
County of Harrison
Solicitation Number
Description

Specifications include, but are not limited to: Bypass Pumping: Contractor shall set up a temporary bypass pumping system to handle the daily sewage flows. This shall include temporary plugging of the line between the gravity collection system and the existing pump station wet well. Thence a bypass pump capable of handling a flow of 1500 GPM or more, installed. Bypass pump shall be capable of running 24 hours a day, 7 days a week, for the duration of the project. Fuel and repairs shall be the responsibility of the contractor. Pump Installation: Submittals shall be required for construction prior to onset of this project. Pumps, slide rail systems control, and floats will be furnished for installation by the owner. Electrical will be supplied by others. The wet well top slab, vent, and aluminum access cover will have to be removed and replaced with new concrete cover. Top will have to be 8” thick, 3500 PSI concrete with 2 matts of #5 rebar minimum. Door shall be “BILCO” sized to accommodate the removal of submersible pump via individual slide rails. Piping: Piping shall be ductile iron (bolted fittings), sized 6” at pumps, manifolded together into a single 10” connected to the existing force main (10”). All excess piping to the drywell shall be plugged permanently. Valve Pit: New backflow and gate valves shall be provided in a new valve box with a “BILCO” door sized to accommodate the removal of said valves. Valves to be AWWA approved. New force main will be buried a minimum of 36” deep. Valve vault shall have a 2” gravity drain run to the pump station wet well. Contractor be advised all miscellaneous hardware, bolts, nuts, washers, shall be of stainless steel unless otherwise noted, and shall be incidental to this project.

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