INSPECTION BODY OF TYPE A AT CONTROL LTD

  • Valid from 30.01.2024
  • Valid to 19.10.2026
  • Status Valid certificate
  • Certificate No 44 ОКA
  • Contact Person Raycho Dimitrov

Name: INSPECTION BODY OF TYPE A AT CONTROL LTD
Legal Entity: КОНТРОЛ ООД
Initial Accreditation Date: 21.06.2002
Field: Inspection Bodies A
Scope: To perform inspection of:
Products, facilities, structures, and equipment specified in the accreditation order, attached to this certificate, using the following methods: Visual test methods (VT); Magnetic-particle test methods (MT); Liquid Penetrating Test methods (PT); Radiographic tests (RT); Ultrasonic tests (UT); Walls thickness by means of Ultrasonic thickness measurement (UTМ); Hermeticity/ tightness (presence/absence of leakage) by means of Leak testing (LT) (gas-hydraulic methods) using foaming compounds.
Destructive tests (DT); Hardness test acc. to: Brinell (HBW); Rockwell (HR), Vickers (HV), Leeb (HL).
Мetallographic control – Products, facilities, structures, and equipment specified in the accreditation order, attached to this certificate, based on the following parameters: Type, quantitative content and distribution of non-metallic inclusions, Grain size, Degree of microstructural banding, Development of Widmanstätten structure, Pearlite and ferrite percentage ratio in the structure of the steels, Degree of graphitization and degree of spheroidization of pearlite in carbon and low alloy steels, Microdefects (pores) and creep damage extent, Macrostructural imperfections.
Presence of the chemical elements chromium (Cr), molybdenum (Mo) and vanadium (V) in steels by means of Spectral analysis.
Coatings on ferromagnetic and non-ferromagnetic bases: Thickness measurement by means of Eddy-current testing (ECT) and Magnetic induction testing methods.
Electrical insulation coating of metals: Density of insulation coating by means of Electro-sparkling testing methods.
Rope-way lines for transportation of passengers by means of Magnetic Rope Testing (MRT).
Pipelines, tube bends and heating surfaces (tube coils, heat exchanging tubes): Departure from circularity (Ovality).
Welded joints manufactured of metallic materials: Types, sizes and distribution of the imperfections contained in the weld volume by means of Destructive tests (DT).

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