The "Material Laboratories" department is a testing laboratory accredited according to the ČSN EN ISO/IEC 17025:2018 standard (ZL 1411.3). This department provides tests of mechanical properties, metallographic tests of metallic materials, tests of resistance to intergranular corrosion of stainless steels, non-destructive determination of the proportion of ferritic phase in austenitic weld metals and duplex steels - all within the scope of the Annex to the Accreditation Certificate.
We have extensive experience with tests regarding the evaluation of test weld joints, both production or qualification ones, for tests of welders and for qualifications of welding procedures.
We perform tests to verify the quality of metallurgical materials.
In addition to accredited tests, we also perform technological tests of pipes and tubes (by squeezing, extending), heat treatment, such as improving and annealing of small semi-finished products and parts, vacuum annealing.
Head of Material Laboratories
Phone: +420 607 129 614
The Materiology (Defectoscopy) department is a testing laboratory accredited according to the ČSN EN ISO/IEC 17025:2018 standard (ZL 1411.2).
The accredited testing methods are:
- Ultrasonic tests
- X-ray (irradiation) tests
- Capillary tests
- Magnetic powder tests
The subject of testing is welds and basic material (forgings, sheets, castings) in the scope of the Annex to the Accreditation Certificate.
As part of ultrasonic testing, we also perform tests with advanced ultrasonic techniques Phased Array and TOFD. As part of X-ray testing, we also perform the method of digital radiography, using X-ray lamps with a voltage of 220 ÷ 450 kV, or Betatron - in the case of a requirement for irradiation of thicknesses greater than 100 mm.
The laboratory staff is qualified according to ČSN EN ISO 9712, tests in each method are guaranteed by a Level III worker.
Head of the Materiology Testing Laboratory
Phone: +420 605 221 628
Reactor In-Service Inspections Testing Laboratory (ZLPK) is a laboratory accredited pursuant to the ČSN EN ISO/IEC 17025:2018 Standard (ZL 1411).
In this laboratory, we deal with non-destructive testing of nuclear power plant components and with measurement of efficiency of air-conditioning aerosol filters. The accredited activities listed in the Accreditation Certificate relate to eddy current testing (ET), ultrasonic testing (UT) and visual testing (VT) of the inner surface of the VVER 440 reactor vessel and measurement of air-conditioning aerosol filters.
Using SKIN or MKS manipulators, we use non-destructive methods to check weld joints and deposits on the reactor pressure vessel. By means of the PE (reflective) and TOFD (diffractive) ultrasonic techniques, we search for the presence of volume imperfections. By means of eddy currents, we detect surface imperfections and defects. By indirect visual inspection, using cameras, we determine the overall condition of all surfaces and any further damage or the presence of foreign objects.
ZLPK employees have many years of experience in performing the above tests in our country and abroad, where there are nuclear power plants with VVER 440 reactors. These tests have also been performed, for example, in Hungary and Armenia.
We measure the efficiency of air-conditioning aerosol filters at the Temelín nuclear power plant by measuring the fractional separability with aerosol particle sizes from 0.4 mm using laser particle size analyzers. We use DEHS (Di-Ethyl-Hexyl-Sebacat) aerosol as a test aerosol.
In addition to accredited activities, ZLPK employees are engaged in other, not yet accredited testing activities at nuclear power plants, such as inspections of welded joints of primary circuit loops, steam generator heat-exchanging tubes, or inspections of different types of bolts, using various combinations of ET (eddy current testing), UT (ultrasonic testing), VT (visual testing), PT (capillary testing) and MT (magnetic testing) methods.
The laboratory staff are qualified pursuant to ČSN EN ISO 9712, tests in each method are guaranteed by a Level III worker.
Head of Reactor In-Service Inspections – Testing Laboratory
Phone: +420 734 769 391