Test Center


 
България, Козлодуй 3321,Площадка АЕЦ  TEL: +359 973 80018  FAX:+359 973 80736          ® Copyright Atomenergoremont PLC 2012




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INSPECTION OF TRANSFORMER OILS

  • Breakdown voltage of transformer oil (BDS IEC 60155)
  • Moisture content in transformer oil (BDS IEC 60814)
  • Content of mechanical impurities in transformer oil (IEC 970)
  • Dielectric loss tangent of transformer oil (BDS IEC 60247)
  • Density of transformer oil (BDS EN ISO3675-97)  
  • Specific volume resistance and relative permittivity of transformer oil (BDS EN 602470)
  • Acid number  of transformer oil (ASTM D 664)
  • Surface tension of transformer oil (ISO 6295)
  • Gas-chromatograph analysis of dissolved gases in transformer oil (RD 34.46.303-89, ASTMD 3612)
  • Total gas content of transformer oil (УИВВМ-2М /ИЕ/)
  • Determination of resin compounds in silica gel (BDS 7783-69)
  • Determination of moisture content in silica gel /method for constant mass/
  • Determination of moisture content in hard mass (BDS IEC 60814)

CONTROL OF ELECTRICAL AND PHYSICAL VALUES OF TRANSFORMERS

  • Measurement of dielectric characteristics /tgd, С, Rиз/ (BDS 16654-87)
  • Measurement of non-load and short circuit characteristics (BDS 15320-81)
  • Measuring the resistance of windings and current-carrying circuits of changer working on-load and without excitation through direct current (BDS 15320-81, BDS 3365-85) 
  • Determination of transformation ratio and connection group (15320-81)
  • Temperature field on the outer surface of transformer equipment
  • Measurement of load currents, insulation resistance of electrical motors of the cooling system, on-load changers (usage instructions)  
  • Determination of vibration state (vibrospeeds) of electrical motors of cooling systems (BDS 5626-82)
  • Measurement of electrical & mechanical and mechanical characteristics of on load changer, tap changer without eexcitation /instruction manual/
  • Measurement of electrical and mechanical characteristics of instrumentation and protective equipment (instruction manual) 

DIAGNOSTICS OF TRANSFORMER EQUIPMENT

  •     Examination of serviceability of transformer equipment based on physical and chemical tests of transformer oil and electrical and physical measurements;
  •     Analysis of found defects; 
  •     Assessment of the necessity and determination of repair works scope based on state estimation of transformer equipment.

Mechanical lab

  • Absorbed power;
  • Specific elongation;
  • Tensile strength; 
  • Bending cracks;
  • Brinell hardness (BH);
  • Rockwell hardnes (RH);
  • Vickers hardness (VH).

Non-destructive test lab

  • Test of pressure vessels, tanks, reservoirs, pipelines, metals, metals products and facilities -base metal and welding facilities. 
  • Steels (carbon, alloyed, corrosion-proof), welding (additive), weldable (filler)  material, ferrous and non-ferrous metals and alloys, by:  
  • Radiography test;
  • Visual test;
  • Magnetic powder test;
  • Penetration test;
  • Ultrasonic test including thickness;
  • Containment test

Spectral radiography and luminescent test:

  • Mn  - Manganese
  • Cr - Chrome
  • Mo - Molybdenum
  • Ni  - Nickel
  • Ti -  Titanium
  • W  - Wolfram
  • V  - Vanadium
  • Sb -  Antimony 
  • Sn  - Tin
  • Nb -  Niobium
  • Cu -  Cuprum
  • Co  - Cobalt
  • Fe - Ferum

Quantitative chemical control:

  • C - Carbon
  • Mn - Manganese 
  • Cr - Chrome
  • Si  - Silicon
  • Mo - Molybdenum
  • Ni  - Nickel
  • P - Phosphor
  • S - Sulfur
ATOMENERGOREMONT PLC