Badacsonytomaj - Renovation of the I/8 regional pump station.

Customer: DRV Zrt

Description of the work: Complete architectural, machinery, and control system renovation of the pump station.

Time of construction: 2018

Renovation basic data:

Basic data: 2.60m diameter, 6.50m depth, inlet sewer DN300 – Pumps: 2 Flygt CP 3300 HT DN150/200.

Washing and cleaning of the shaft before starting demolition works, and disconnection and removal of the pumps’ electrical connections.
Periodic provision of a generator during construction – DRV Zrt.
Periodic provision of a vacuum truck during construction – DRV Zrt.
Establishing the conditions for work: Plugging the outlet pipe in the receiving shaft, temporary installation of a new DN300 stainless steel bypass to the temporarily installed MOBA E20 pump station, relocating the existing CP3300 HT pump to the MOBA E20 pump station, installation of a PE pressure pipeline to the measuring shaft, connecting to the temporary connection point on the common branch. Construction of a temporary control cabinet for the MOBA E20 pump station with one pump in temporary operation.
RWT KFT will establish and operate the temporary setup and provide 24/7 supervision during construction.
Complete dismantling of the machinery systems inside the pump station.
Dismantling of the steel pressure pipe and fittings in the valve chamber.
Demolition of the existing pump station roof slab, installation of a new MOBA E25-41a reinforced concrete slab with stainless steel odor-tight doors, 1 piece 600×700 mm and 2 pieces 900×1150 mm, installation of new stainless steel cable trays and level sensor holders, installation of grounding with stainless steel flat bars.
Installation of a 1″ handrail and a 6.50 m stainless steel ladder with METMARK slip-resistant steps inside the pump station.
Internal corrosion-resistant coating of the pump station with MC RIM Protect and a 3 mm ombran CPS resin coating, suitable for pH 0-12.
Installation of 2 Flygt base elbows, DN150/200 with 3″ stainless steel guide rail holders and replacement of cable trays.
Installation of 2 DN200/219.3 stainless steel pressure pipes for the vertical section, and 2 DN200 90° bends made from KO35Ti (1.4571 or 4404) material.
4×6.50 m guide rails made of 3″/88.9 stainless steel KO35Ti (1.4571 or 4404) material.
Manufacture and installation of a new DN300 gate valve on the gravity inlet pipe, replacing the existing one.
Dismantling of the steel pressure pipeline between the pump station and the valve chamber, replacement with a new D225 PE pressure pipe.
Installation of 2 new DN150 gate valves with handwheels, 2 DN150 ball check valves NBR, and 2 DN150 rubber compensators.
Manufacture and installation of a new DN150/168.3 stainless steel KO35Ti Y-connector in the valve chamber.
Replacement of the doors in the reinforced concrete roof slab of the valve chamber, 1200×1600 mm stainless steel hinged design, installation of a 1″ handrail, and manufacture and installation of a 2.40 m stainless steel ladder.
Dismantling of the underground steel pressure pipeline between the valve chamber and the measuring chamber, and replacement with a new D225 PE pressure pipe.
Dismantling of the internal machinery systems of the measuring chamber, installation of a new DN200/150 custom T-fitting stainless steel KO35Ti pressure pipe, installation of 1 DN150 rubber wedge gate valve with a short build, 1 DN200 knife gate valve with handwheel, and installation of 1 DN150 and 1 DN200 NBR rubber compensator.
Replacement of the doors in the reinforced concrete roof slab of the measuring chamber, 1000×1000 mm stainless steel design, installation of a 1″ handrail, and manufacture and installation of a 2.40 m stainless steel ladder.
Dismantling of the underground steel discharge pipe between the measuring chamber and the gravity chamber, and installation of a new D160 PE discharge pipe.
M20 A2/A4 bolts, nuts, flat washers, IT gaskets, and auxiliary materials.