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INDUSTRIAL CHIMNEYSTACKS, SILOS AND TOWERS

Erection of new chimneystacks and silos

  • Chimneystacks and thin-walled reinforced concrete structures executed using the moving or sliding technique, together with assembly of equipment;
  • Erection of brickwork steel and reinforced concrete chimneystacks with lining made from radial brick, chamotte brick and acid-resistant blocks;
  • Cylindrical and tapered;
  • Steel heat-insulated chimneystacks resistant to sulfate and acid corrosion, with long-term warranty;
  • Single- and multi-flue chimneystacks;
  • Erection of ceramic chimneystacks;
  • Erection of reinforced concrete towers (fire towers, observationaland sight-seeing towers);
  • Erection, overhauls and adaptive modernization for the purposes of industrial chimneystack flue gas desulfurization installations;
  • Erection and overhauls of reinforced concrete silos using the sliding technique.

Development of overhaul techniques and selection of materials

  • Overhauls of structures;
  • Removal of damaged concrete layers(chiseling out, sandblasting or high pressure washing);
  • Cleaning of uncovered reinforcement bars;
  • Anti-corrosion preservation of reinforcement bars;
  • Preparation of the adhesive layer for joining of old concrete with the reparatory material;
  • Re-grading of cavities using the“wet on wet” technique and properly selected ready-made filling compounds;
  • Filling of cracks;
  • Water proofing of concrete;
  • Spreading of specially selected coatings for protection against the corrosive effect of the environment.

Maintenance and overhauls of chimneystacks – reinforced concrete and ceramic chimneystacks

  • Diagnostics:
  • Checking of verticality and form of the chimneystack’s axis;
  • Checking of foundation settlement;
  • Examining of the chimney shaft in terms of strength (concrete class);
  • Examining of concrete corrosion(carbonization level) by means of pH tests;
  • Examining of mechanical damage and inaccuracies in concrete mixture spreading: honeycombing, loosening of the packing material of reinforcement bars, poorly executed concrete joints;
  • Examining of concrete cracks: geometry and morphology of cracks (shape, opening and depth), uncovering of reinforcement bars, determining of corrosion advancement of reinforcement bars;
  • Examining of the condition of inner lining, heat-insulation and head of the chimney;
  • Examining of the condition of chimney heat insulation during operation, distribution of thermal fields within the entire chimneystack (infrared mapping);
  • Examining of the condition of chimneystack auxiliary equipment: platforms, ladders, handrails, electrical and lightning-protection installation;
  • Verificatory calculations of strength;
  • Inventory-making of damages;
  • Preparing of photographic documentation;
  • Guidelines on overhaul techniques;
  • Overhauls and modernization of chimneystacks – replacing of lining, installation of steel inserts, repairing of shafts and guniting;
  • Repairing of reinforced concrete furnace shells, applying of repair compounds, guniting;
  • Repairing of reinforced concrete structures, preserving of concrete against sulfate and acid corrosion;
  • Heat-insulated steel inserts designed for all types of chimneystacks.

Maintenance and overhauls of chimneystacks – steel chimneystacks

  • Tall steel chimneystacks (including chimneystacks in latticed towers);
  • Waste-gas flues and desulfurization installations;
  • Steel chimneystacks technical condition evaluationand overhauls.

Diagnostics of steel chimneystacks

  • Checking of verticality and form of the chimneystack’s axis;
  • Checking of foundation settlement;
  • Examining of thermal fields within the entire chimneystack(infrared mapping);
  • Examining of the condition of inner and outer chimney surfaces, including the condition of protective coatings;
  • Examining of the condition of chimneystack auxiliary equipment: platforms, ladders, electrical and lightning-protectio ninstallation;
  • Inspecting of the chimney’s inside;
  • Examining of the thickness of chimney shaft walls and corrosion losses;
  • Checking of segment joints for tightness;
  • Inventory-making of damages;
  • Preparing of photographic documentation;
  • Guidelines on overhaul techniques.

Overhauls of steel chimneystacks

  • Disassembling of chimneystacks;
  • Prefabricating and assembling of chimneystacks;
  • Replacing of corroded shaft elements;
  • Replacing and maintaining of stay ropes;
  • Securing of internal chimneystack surfaces with flue gas resistant coatings;
  • Sealing of flange connections;
  • Outer surface anticorrosion painting, applicable to other chimneystack elements;
  • Repairing and replacing of lighting and lightning-protection installations;
  • The scope of expert evaluations of the technical condition of structures meets the requirements of the Polish Building Law Act (Journal of Laws No. 89 of 1994, Chapter 6 Article 62 Item 1).