Czech Republic Office

Czech Republic Office

Rizzo Associates Czech, a. s. (Rizzo Czech) was originally founded under the trade name Stevenson and Associates Office in the Czech Republic (S&A-CZ). The firm has spent the past two decades successfully providing consulting and engineering services in the seismic design and evaluation of equipment for the nuclear industry. We strive to provide the highest quality work and expert knowledge – an obligation of all firms who support the safety of nuclear power plants and nuclear industry.

Stevenson and Associates (S&A) was established in 1981 by Dr. John D. Stevenson as a consulting engineering firm based out of Cleveland, Ohio. Since 1990 S&A has been active in developing consulting engineering services in Central and Eastern Europe. Rizzo Czech was established in 1992 and has been a member of RIZZO since 2000. In 2001 the procedure GIP VVER  was reported to IAEA as  the indirect method for evaluation of seismic adequacy for equipment installed on VVER-type nuclear power plants. Since 2003 the method is among practices approved and recommended by IAEA.Since 2006 the firm has partnered with the Czech Army Research Technical Institute (VOP CZ, s.p., Vyškov, Czech Republic ) and is actively providing tests on biaxial seismic testing tables.

The activities of Rizzo Czech focus on the following:

  • Nuclear Safety of Power Generation/Nuclear Facilities
  • Structures, Systems and Components Reliability under Extreme Events/Hazards
  • Risk and Hazard Assessment for Industrial Facilities (Dams/Strategic Buildings)
  • Technical Guides, Standards, and Legislation Development for Nuclear Safety

Rizzo Czech provides consulting and engineering services to market sectors with high demands for safety and reliability. Although we focus on territories in which the VVER nuclear reactor technology has been implemented, our services have been provided to customers in Europe, Russia, South Africa, and the United States.

Quality Policy

As a matter of policy Rizzo Czech staff engineers participate in the creation, modification and renewal of national and international standards, regulations, guidelines and similar important documents. A significant factor of our professional activity is a continuous and close co-operation with the International Atomic Energy Agency (IAEA), National Nuclear Regulatory Authorities, standard development organizations, and other national and international organizations including Nuclear Research Institute Rez, Czech Republic; Nuclear Research Institute Trnava, Slovakia; SKODA Pilsen, Czech Republic; Energoprojekt Prague, Czech Republic; Paul C. Rizzo Associates, Inc. (USA); Siemens, Germany; and Westinghouse, Brussels.

The Rizzo Czech work meets the quality criteria established in a Quality Assurance Program based on the requirements of ISO 9001:2015 and the IAEA 50-C/SG-Q (1996), US NRC 10 CFR 830.120 (1995) and ANSI/ASME NQA-1-1995 (2000) documents.


The Rizzo Czech office is specialized in comprehensive structural and mechanical analysis, design, and testing for nuclear and other industrial facilities using state-of-the-practice software and hardware products. Services provided by the Rizzo Czech office range from conceptual studies and criteria development to detailed analysis of Structures, Systems, and Components for both new and existing facilities, particularly for nuclear power plants. We have detailed knowledge regarding the structural-mechanical design and safety analysis of the PWR, BWR, CANDU, and the VVER type nuclear reactor plants.

The Rizzo Czech office specializes in the following service areas:

  • Evaluation of Seismic Adequacy
  • Component Qualification
  • Design and Analysis
  • Structural and Mechanical Analysis
  • Research and Development

A sample of Rizzo Czech project experience can be found under the Projects/ Power Generation Industry /Nuclear page of the website, or by searching key words ‘Rizzo Czech Project’.

To Contact Us:
Registered Office Address:
Vejprnická 663/56
318 00 Plzeň, Czech Republic
Tel: +420 377 350 233
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Google Maps

Contact person: Mr. Marek Tengler – Chairman of the Board

ID No: 45353409
VAT ID: CZ45353409

The Company is officially registered by the Regional Court in Plzen, Czech Republic, section B, file No. 1445.



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