Supply and replacement of a water economizer, as well as the first and second stages of a superheater of GM-50 boilers at CHPP-1 Chisinau.

Purpose of work:

The restoration of technical and economic characteristics to values ​​close to the design with the replacement and (or) restoration of any components.

Overhaul of the medium-pressure boiler unit GM-50 No. 3.

Name of works:

• Replacement of superheaters of the first and second stages and steam chamber;
• Incoming inspection of pipes for the manufacture of superheaters;
• Metal control during repair and replacement of superheaters.

Scope of work:

• Assembly and disassembly:
  • Packets of coils of the stage No. 1 assembly;
  • Packets of coils of the stage No. 2 assembly;

• Steam chamber;

• Drum repair (preparation of holes for connecting pipes);
• Collector repair (preparation of holes for connecting pipes);
• Removal and restoration of the outer skin;
• Removal and restoration of lining;
• Ultrasonic metal control and radiography of all butt welded joints in the manufacture of heating surfaces and collectors of the GM-50 boiler;
• Ultrasonic metal control when replacing heating surfaces and collectors of the GM-50 boiler;
• Magnetic powder flaw detection of all angular welded joints during installation of heating surfaces on the collectors of the GM-50 boiler.

Overhaul of the medium-pressure boiler unit GM-50 No. 4.

Name of works:

• Replacement of the water economizer of the first stage;
• Installation of a condensation unit and piping;
• Incoming inspection of pipes;
• Metal control.

 Scope of work:

• Montage demontage:
  • Water economizer;
  • Coils;
• Removal and restoration of the outer skin;
• Removal and restoration of lining;
• Installation of a condensation unit;
• Ultrasonic metal control and radiography of all butt welded joints in the manufacture of heating surfaces and collectors of the GM-50 boiler;
• Ultrasonic metal control by replacing heating surfaces and collectors of the GM-50 boiler;
• Magnetic powder flaw detection of all angular welded joints during installation of heating surfaces on the collectors of the GM-50 boiler.