Water supply and sewerage

Maintenance and routine repairs of hot and cold water supply systems, water treatment:

- Maintenance:

1) Checking water pumps (cleaning and lubrication of bearings, checking mechanical seals, checking bolts tightening);

2) Checking sodium cation filter; its tightness and operation;

3) Checking bactericidal apparatus, its tightness and operation;

4) Checking tanks, reservoirs, their tightness;

5) Checking water supply networks (detection of leakage);

6) Recording and documentation of water wastage;

7) Checking manholes and hatch covers;

8) Ensuring proper operation (or only in a workable) of equipment;

9) Ensuring there is no extraneous noise, vibration during equipment operation.

- Ongoing repairs:

1) Complete or partial modification of water points;

2) Changing input or output pipes;

3) Complete or partial re-laying of individual sections of pipelines due to outbreaks, corrosion or pipe subsidence;

4) Repair or replacement of valves;

5) Repair of pumps with opening, disassembly of mechanical seal, replacement of stuffing seals, checking condition of impeller and shaft and their replacement if necessary;

6) Pump centering;

7) Ramming stuffing boxes, replacement of individual parts of the valves;

8) Changing manholes and water wells covers;

9) Repair of shackles, stairs, and water supply pipe wells;

10) Elimination of leaks in water supply system;

11) System testing (pressure molding). 

Maintenance and routine repair of sewerage systems:

- Maintenance:

1) Ensuring proper condition and cleanliness of manholes, proper covering with hatch;

2) Checking integrity of hatches;

3) Checking necks, shackles and stairs;

4) Checking degree of pipes filling; avoiding backwater (flooding), clogging and other defects visible from the ground surface;

5) Avoiding blockages on road near wells area and in trays for drainage of industrial waste, from the pumping room, and checking drainage pits and grids;

6) Checking internal sewage system (toilet facilities, bathrooms);

- Ongoing repairs:

1) Repair of parts with building defects or insufficient gradients;

2) Re-laying necks;

3) Complete redevelopment of wells.