Published on: 2026-09-16
Source: Saint Petersburg State University of Architecture and Civil Engineering –
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At the Saint Petersburg State University of Architecture and Civil Engineering, the research project “Development and modeling of construction process parameters during the modernization of hazardous production facilities taking into account technical and environmental risks” has been completed. The study was conducted by a professor of the Department of Construction Organization at SPSASU, Doctor of Economics, Candidate of Technical Sciences Alexander Rudenko.
Modernization of existing hazardous production facilities is a complex manufacturing task. Performing construction and repair work at such facilities is associated with the risk of disrupting hazardous production processes and causing accidents. At the same time, the parameters and conditions for carrying out construction processes during the modernization of such facilities are insufficiently studied, and the existing regulatory and methodological approaches require significant supplementation.
A particular difficulty is presented by Repair and restoration work after accidents. At facilities that are critical for life support and stable operation in emergency situations, the necessity of carrying out such work may persist even under conditions of man-made contamination.
The purpose of the study was the computational-analytical and experimental justification, as well as modeling of production parameters for modernization in normal, harmful, and hazardous working environment conditions.
At the first stage specialists conducted a calculation and analytical assessment of the possible consequences of accidents at hazardous production facilities, taking into account different options for the placement of buildings and structures relative to the accident source. In particular, scenario options for emergencies at nuclear energy cycle and chemical industry facilities were considered.
The results showed that depending on the parameters of the natural environment, ecological contamination in the accident area can persist for a long time. At the same time, the current regulatory and technical documentation does not contain a sufficient set of provisions defining regulations, organizational and technological solutions, as well as tariff and technical standardization of construction processes when performing work under such conditions.
Moreover, the existing practice for dealing with technogenic emergencies primarily focuses on addressing urgent emergency tasks and does not fully ensure the subsequent repair and restoration work. The patterns of recovery for objects damaged, in particular, as a result of an explosion, including under conditions of technogenic contamination, are insufficiently studied.
Photographic documentation of work on dismantling walls made of small-sized elements step-by-step: row 1 – at the beginning of work, 2 – in progress, 3 – at the end of work; in various production environment conditions: A – normal, B – hazardous, C – dangerous
Second stage the research was dedicated to the experimental-statistical evaluation the influence of production environment factors and the use of personal protective equipment on labor productivity. The experiments studied the efficiency of performing construction, loading-unloading, and unpacking tasks under various production environment conditions. Photographic documentation of one of the experiments illustrates the step-by-step disassembly of walls made of small-sized elements in normal, hazardous, and dangerous conditions.
According to the study results Results of numerical-analytical calculations and assessments of emergency scenario options during the modernization of hazardous industries have been obtained. Criteria and conditions for determining the sequence of modernization of facilities in normal, harmful, and hazardous production environment conditions have been justified.
Dependencies of labor productivity on factors of the production environment during construction processes have also been established. The influence of various factors on loading and unloading operations during the movement and unpacking of materials under permissible levels and technogenic pollution has been studied separately.
One of the results of the work was development of an aggregated object-node method for repair and modernization, as well as a modular-descriptive method for modernization and repair of production facilities. The proposed approaches allow for systematizing modernization processes and taking into account the characteristics of performing work in various production environment conditions.
The scientific novelty of the research lies in supplementing the fundamental provisions for assessing and determining the parameters of construction and installation works under normal and hazardous working conditions during the modernization of hazardous industries. In addition, mathematical models have been obtained that allow taking into account the influence of various factors on the efficiency of modernization.
The practical significance of the work is related to the possibility of applying the obtained results in planning and organizing construction processes at hazardous industrial facilities. Experimental studies made it possible to establish mathematical relationships showing the influence of factors on labor productivity during the execution of basic construction, unloading, and unpacking work in permissible and harmful working conditions.
Thus, the results of the research work can serve as a basis for further improvement of organizational and technological solutions during the modernization of hazardous production facilities, as well as for the development of approaches to performing repair and restoration work under conditions of man-made contamination.
The research was conducted within the framework of a grant for scientific research work by the scientific and pedagogical staff of SPbGASU in 2026.
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