INTELLIGENT INFORMATION SYSTEM FOR TECHNICAL SUPERVISION OF HIGH-RISK FACILITIES

Authors

  • Nikolay Nikolov Faculty of Mechanical Engineering, Technical University of Sofia, Sofia, Bulgaria
  • Georgi Stanchev Faculty of Mechanical Engineering, Technical University of Sofia, Sofia, Bulgaria
  • Boryana Ilieva - Mihaylova Faculty of Mechanical Engineering, Technical University of Sofia, Sofia, Bulgaria

DOI:

https://doi.org/10.68302/std2026.vol3.103

Keywords:

high-risk facilities, technical supervision, information system, digitalization, document workflow, JWT, RBAC, Ruby on Rails, React, PostgreSQL

Abstract

High-risk facilities (HRF) are subject to strict regulatory oversight, encompassing mandatory registration, periodic technical inspections, and systematic maintenance of technical documentation. In practice, the management of these processes is hindered by a range of organizational shortcomings: facility data are scattered across heterogeneous registers and files, there are no automated mechanisms for tracking inspection deadlines, and the document workflow between technical supervision bodies (TSB) and facility operators relies predominantly on paper-based and traditional communication channels. This paper presents the design and implementation of an intelligent information system (IIS) aimed at digitalizing and optimizing these processes. The applicable regulatory framework - the Law on Technical Requirements for Products and the relevant subordinate legislation and the identified practical challenges are examined. Based on interviews with representatives of TSBs and facility operators, system requirements were defined and a three-tier web architecture was proposed, implemented with React (presentation layer), Ruby on Rails (business logic), and PostgreSQL (data management), supplemented by Redis for session management and background job processing, and Active Storage for file handling. Access control is secured through JSON Web Tokens (JWT) and a role-based access control model (RBAC) with three levels - administrator, TSB and operator. The system centralizes the electronic technical record of each HRF, automatically calculates and monitors periodic inspection deadlines, generates mandatory documents and application forms, and provides a traceable document workflow with version control. Achieved results are presented alongside identified limitations - the absence of a mobile client, lack of integration with external national registries, and no support for qualified electronic signatures and directions for future development of the system are outlined.

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References

[1] Law on the Technical Requirements for Products (ZTIP), State Gazette of the Republic of Bulgaria, no. 86/1999, last amended SG no. 21/2021. (in Bulgarian)

[2] Law on Health and Safety at Work (ZBUT), State Gazette of the Republic of Bulgaria, no. 124/1997, last amended SG no. 9/2023. (in Bulgarian)

[3] Ordinance on the safe operation and technical supervision of lifting equipment (NBETNPS), State Gazette of the Republic of Bulgaria, no. 78/2004. (in Bulgarian)

[4] Ordinance on the conditions and procedure for issuing licences for technical supervision of high-risk facilities and for maintaining a register of the facilities (NURILOTNSPORVRS), State Gazette of the Republic of Bulgaria, no. 79/2003. (in Bulgarian)

[5] Ordinance No. 1 of 2002 on the conditions and procedure for acquiring and recognising qualifications for practising professions in the operation of lifting cranes and mobile work platforms, State Gazette of the Republic of Bulgaria, no. 51/2002. (in Bulgarian)

[6] Regulation (EU) 2023/1230 of the European Parliament and of the Council of 14 June 2023 on machinery, Official Journal of the European Union, L 165, 29 June 2023.

[7] Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment, Official Journal of the European Union, L 189, 27 June 2014.

[8] L. Bass, P. Clements, and R. Kazman, Software Architecture in Practice, 3rd ed. Upper Saddle River, NJ: Addison-Wesley Professional, 2012.

[9] M. Fowler, Patterns of Enterprise Application Architecture. Boston, MA: Addison-Wesley, 2002.

[10] C. Richardson, Microservices Patterns: With Examples in Java. Shelter Island, NY: Manning Publications, 2018.

[11] S. Newman, Building Microservices: Designing Fine-Grained Systems, 2nd ed. Sebastopol, CA: O’Reilly Media, 2021.

[12] D. H. Hansson, “Ruby on Rails: The Guide,” Rails Core Team, 2024. [Online]. Available: https://guides.rubyonrails.org. [Accessed: Mar. 2025].

[13] Meta Open Source, “React — A JavaScript library for building user interfaces,” 2023. [Online]. Available: https://react.dev. [Accessed: Mar. 2025].

[14] PostgreSQL Global Development Group, “PostgreSQL 16 Documentation,” 2023. [Online]. Available: https://www.postgresql.org/docs/16/. [Accessed: Mar. 2025].

[15] Redis Ltd., “Redis Documentation,” 2023. [Online]. Available: https://redis.io/docs. [Accessed: Mar. 2025].

[16] Docker Inc., “Docker Compose Documentation,” 2023. [Online]. Available: https://docs.docker.com/compose/. [Accessed: Mar. 2025].

[17] M. Jones, J. Bradley, and N. Sakimura, “JSON Web Token (JWT),” Internet Engineering Task Force (IETF), RFC 7519, May 2015. doi: https://doi.org/10.17487/RFC7519

[18] D. F. Ferraiolo, D. R. Kuhn, and R. Chandramouli, Role-Based Access Control, 2nd ed. Norwood, MA: Artech House, 2007.

[19] Systems and software engineering — Systems and software quality requirements and evaluation (SQuaRE) — System and software quality models, ISO/IEC Standard 25010:2011, 2011.

[20] Information security, cybersecurity and privacy protection — Information security management systems, ISO/IEC Standard 27001:2022, 2022.

[21] M. Janssen and N. Helbig, “Innovating and changing the policy-cycle: Policy-makers be prepared!,” Government Information Quarterly, vol. 35, no. 4, pp. S99–S105, 2018. doi: https://doi.org/10.1016/j.giq.2015.11.009

[22] I. Mergel, N. Edelmann, and N. Haug, “Defining digital transformation: Results from expert interviews,” Government Information Quarterly, vol. 36, no. 4, p. 101385, 2019. doi: https://doi.org/10.1016/j.giq.2019.06.002

[23] I. Lindgren, C. Ø. Madsen, S. Hofmann, and U. Melin, “Close encounters of the digital kind: A research agenda for the digitalization of public services,” Government Information Quarterly, vol. 36, no. 3, pp. 427–436, 2019. doi: https://doi.org/10.1016/j.giq.2019.03.002

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Published

17.09.2026

How to Cite

[1]
N. Nikolov, G. Stanchev, and B. Ilieva - Mihaylova, “INTELLIGENT INFORMATION SYSTEM FOR TECHNICAL SUPERVISION OF HIGH-RISK FACILITIES”, SysTechDev, vol. 3, pp. 209–214, Sep. 2026, doi: 10.68302/std2026.vol3.103.